DATA SHEET
Product specification
Supersedes data of 8th March 2001
File under BCcomponents, BC08
2001 Jul 13
BCcomponents
PR01/02/03
Professional power metal film resistors
2001 Jul 13 2
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
FEATURES
•High power in small packages
•Different lead materials for different
applications
•Defined interruption behaviour.
APPLICATIONS
•All general purpose power
applications.
DESCRIPTION
A homogeneous film of metal alloy is
deposited on a high grade ceramic
body. After a helical groove has been
cut in the resistive layer, tinned
connecting wires of electrolytic copper
or copper-clad iron are welded to the
end-caps. The resistors are coated with
a red, nonflammable lacquer which
provides electrical, mechanical and
climatic protection. This coating is not
resistant to aggressive fluxes. The
encapsulation is resistant to all
cleaning solvents in accordance with
“MIL-STD-202E, method 215”, and
“IEC 60068-2-45”.
QUICK REFERENCE DATA
Notes
1. 1% tolerance is available for Rn-range from 1R upwards.
2. 2% tolerance is available on request for Rn-range from 1R upwards.
DESCRIPTION
VALUE
PR01 PR02 PR03
Cu-lead FeCu-lead Cu-lead FeCu-lead
Resistance range 0.22 Ωto 1 MΩ0.33 Ωto 1 MΩ1Ωto 1 MΩ0.68 Ωto 1 MΩ1Ωto 1 MΩ
Resistance tolerance and series ±1% (E24, E96 series); ±5% (E24 series); see notes 1 and 2
Maximum dissipation at
Tamb =70°C:
R<1Ω0.6 W 1.2 W −1.6 W −
1Ω≤R 1W 2W1.3W3W2.5W
Thermal resistance (Rth) 135 K/W 75 K/W 115 K/W 60 K/W 75 K/W
Temperature coefficient ≤±250 ×10−6/K
Maximum permissible voltage
(DC or RMS) 350 V 500 V 750 V
Basic specifications IEC 60115-1 and 60115-4
Climatic category (IEC 60068) 55/155/56
Stability after:
load ∆R/R max.: ±5% + 0.1 Ω
climatic tests ∆R/R max.: ±3% + 0.1 Ω
soldering ∆R/R max.: ±1% + 0.05 Ω
2001 Jul 13 3
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
ORDERING INFORMATION
Table 1 Ordering code indicating resistor type and packaging
Table 2 Ordering code indicating resistor type and packaging
Notes
1. PR01 pitch 12.5 mm.
2. PR02 pitch 15.0 mm.
3. PR03 pitch 20.0 mm.
TY P E LEAD ∅
(mm)
TOL
(%)
ORDERING CODE 23.. ... ..... (BANDOLIER)
AMMOPACK REEL
RADIAL TAPED STRAIGHT LEADS
52 mm 52 mm 63 mm 73 mm 80 mm 73 mm 52 mm
4000
units
3000
units
5000
units
1000
units
500
units
1000
units
500
units
5000
units
5000
units
PR01 Cu 0.6
1−−
22 196
1.... −−−−−−
506 197
03... −22 193
14...
06 197
53... −22 193
13... −22 193
23...
06 197
23...
PR02
Cu 0.8
1−−−
22 197
1.... −−−−−
5−06 198
03... −06 198
53... −22 194
13... −−
06 198
23...
FeCu 0.6 5−−−
22 194
54... −22 194
53... −−−
PR03
Cu 0.8
5−−−−
22 195
14... −22 195
13... −−
1−−−−
06 199
5... −06 193
5... −−
FeCu 0.6 5−−−−
22 195
54... −22 195
53... −−
TY P E LEAD ∅
(mm)
TOL
(%)
ORDERING CODE 23.. ... ..... (LOOSE IN BOX)
CROPPED AND FORMED DOUBLE KINK
PITCH = 17.8
(mm)
PITCH = 25.4
(mm)
PITCH = 17.8
(mm)
PITCH = 25.4
(mm) PITCH(1)(2)(3)
1000 units 500 units 1000 units 500 units 1000 units 500 units
PR01 Cu 0.6 522 193 33... −22 193 03... −−−
FeCu 0.6 5 −−22 193 43... −22 193 53...(1) −
PR02
Cu 0.8 522 194 33... −22 194 23... −−−
FeCu 0.6 522 194 73... −22 194 83... −−−
FeCu 0.8 5 −−−−22 194 63...(2) −
PR03
Cu 0.8 5 −22 195 33... −22 195 23... −−
FeCu 0.6 5 −22 195 73... −22 195 83... −−
FeCu 0.8 5 −−−−−22 195 63...(3)
2001 Jul 13 4
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Ordering code (12NC)
•The resistors have a 12-digit
ordering code starting with 23.
•The first 7 digits indicate the resistor
type and packaging;
see Tables 1 and 2.
•The remaining 3 digits indicate the
resistance value:
– The first 2 digits indicate the
resistance value.
– The last digit indicates the
resistance decade in accordance
with Table 3.
Table 3 Last digit of 12NC
RESISTANCE
DECADE LAST DIGIT
0.22 to 0.91 Ω7
1to9.76Ω8
10 to 97.6 Ω9
100 to 976 Ω1
1to9.76k
Ω2
10 to 97.6 kΩ3
100 to 976 kΩ4
1M
Ω5
Ordering example
The ordering code for resistor type
PR02 with Cu leads and a value of
750 Ω, supplied on a bandolier of
1000 units in ammopack, is:
2322 194 13751.
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%.
The values of the E24 series are in accordance with “IEC publication 60063”.
Fig.1 Drift nomogram.
MLB660
P
(W)
T ( C)
mo
1.00
0.75
0.50
0.25
T =
amb 40 C
o70 C
o
100 C
o
125 C
o
155 C
o
205 C
o
∆ R
10000 h
100000 h
30 kΩ
1 kΩ
30 kΩ
10 5.0 2.0 1.0 0.5 0.2 0.1 %
1000 h
PR01
2001 Jul 13 5
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.2 Drift nomogram.
MLB683
P
(W)
T ( C)
mo
2.00
1.50
1.00
0.50
T =
amb 40 C
o70 C
o
100 C
o
125 C
o
155 C
o
220 C
o
∆ R
10000 h
100000 h
39 kΩ
1 kΩ
39 kΩ
10 5.0 2.0 1.0 0.5 0.2 0.1 %
1000 h
PR02
2001 Jul 13 6
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.3 Drift nomogram.
MLB693
P
(W)
T ( C)
m
3.00
2.25
1.50
0.75
T =
amb 40 C 70 C
100 C
125 C
155 C
250 C
oo
o
o
oo
o
∆ R
10000 h
100000 h
51 kΩ
1 kΩ
51 kΩ
10 5.0 2.0 1.0 0.5 0.2 0.1 %
1000 h
PR03
2001 Jul 13 7
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Limiting values
Note
1. The maximum voltage that may be continuously applied to the resistor element, see “IEC publication 60115-1”.
The maximum permissible hot-spot temperature is 205 °C for PR01, 220 °C for PR02 and 250 °C for PR03.
DERATING
The power that the resistor can dissipate depends on the operating temperature; see Fig.4.
TYPE LEAD MATERIAL RANGE LIMITING VOLTAGE(1)
(V)
LIMITING POWER
(W)
PR01 Cu R<1Ω350 0.6
1Ω≤R1.0
PR02 Cu R<1Ω
500
1.2
1Ω≤R2.0
FeCu 1 Ω≤R1.3
PR03 Cu R<1Ω
750
1.6
1Ω≤R3.0
FeCu 1 Ω≤R2.5
Fig.4 Maximum dissipation (Pmax) in percentage of rated power as a function of the ambient temperature (Tamb).
70 10050
00
50
100
155
CCB412
−55 Tamb (°C)
Pmax
(%Prated)
2001 Jul 13 8
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
PULSE LOADING CAPABILITIES
Fig.5 Pulse on a regular basis; maximum permissible peak pulse power as
a function of pulse duration (ti).
P
ˆmax
()
10−1
10−2
10−3
10−4
10−5
10−6
10−11
MLB738
1
10
102
103
ti (s)
2
5
10
20
50
100
200
500
tp/ti = 1000
Pmax
(W)
ˆ
PR01
Fig.6 Pulse on a regular basis; maximum permissible peak pulse voltage as
a function of pulse duration (ti).
V
ˆmax
()
MLB737
1200
0
10 610 510 410 310 210 11
800
1000
600
200
400
Vmax
(V)
ti(s)
PR01
2001 Jul 13 9
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.7 Pulse on a regular basis; maximum permissible peak pulse power as
a function of pulse duration (ti).
P
ˆmax
()
10 510 410 310 210 11
MLB685
103
1
10
102
Pmax
(W)
ti(s)
10 6
10 1
2
5
10
20
50
100 200
500
pi
t /t = 1000
PR02
Fig.8 Pulse on a regular basis; maximum permissible peak pulse voltage as
a function of pulse duration (ti).
V
ˆmax
()
MLB684
1700
500
10 610 510 410 310 210 11
1300
1500
1100
700
900
Vmax
(V)
ti(s)
PR02
2001 Jul 13 10
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.9 Pulse on a regular basis; maximum permissible peak pulse power as
a function of pulse duration (ti).
P
ˆmax
()
PR03
10 510 410 310 210 11
MLB695
103
104
1
10
102
Pmax
(W)
ti(s)
10 6
2
5
10
20
50
100
200
500
pi
t /t = 1000
Fig.10 Pulse on a regular basis; maximum permissible peak pulse voltage as
a function of pulse duration (ti).
V
ˆmax
()
MLB694
2400
0
10 610 510 410 310 210 11
1600
2000
1200
400
800
Vmax
(V)
ti(s)
PR03
2001 Jul 13 11
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
INTERRUPTION CHARACTERISTICS
Fig.11 Time to interruption as a function of overload
power for range: 0R22 ≤Rn<1R.
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
102
10
1
10 150
10
0
MLB661
4020 30 Poverload (W)
t
(s)
PR01
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
Fig.12 Time to interruption as a function of overload
power for range: 1R ≤Rn≤15R.
102
10
1
10 150
10
0
MLB662
4020 30 Poverload (W)
t
(s)
PR01
Fig.13 Time to interruption as a function of overload
power for range: 16R ≤Rn≤560R.
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
102
10
1
10 150
10
0
MLB663
4020 30 Poverload (W)
t
(s)
PR01
2001 Jul 13 12
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.14 Time to interruption as a function of overload
power for range: 0.33R ≤Rn<5R.
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
10
2
10
1
10
1
100 120
20
0
MLB766
8040 60 Poverload (W)
t
(s)
PR02
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
Fig.15 Time to interruption as a function of overload
power for range: 5R ≤Rn< 68R.
10
2
10
1
10
1
100 120
20
0
MLB767
8040 60 Poverload (W)
t
(s)
PR02
Fig.16 Time to interruption as a function of overload
power for range: 68R ≤Rn≤560R.
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
10
2
10
1
10
1
100 120
20
0
MLB768
8040 60 Poverload (W)
t
(s)
PR02
Fig.17 Time to interruption as a function of overload
power for range: 0.68R ≤Rn≤560R.
The graph is based on measured data under constant voltage conditions;
these data may deviate according to the application.
10
2
10
1
10
1
250
50
0
MLB773
200100 150 Poverload(W)
t
(s)
PR03
2001 Jul 13 13
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Application information
Fig.18 Hot-spot temperature rise (∆T) as a
function of dissipated power.
200
0 0.4 1.2
0
MLB735
0.8
40
80
120
160
∆ T
(K)
P (W)
∅0.6 mm Cu-leads.
PR01
Fig.19 Temperature rise (∆T) at the lead end (soldering
point) as a function of dissipated power at
various lead lengths after mounting.
100
0 0.4 1.2
0
MLB736
0.8
20
40
60
80
∆ T
(K)
P (W)
15 mm
20 mm
25 mm
∅0.6 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
PR01
Fig.20 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.6 mm FeCu-leads.
200
0 0.4 1.2
0
CCB014
0.8
40
80
120
160
∆T
(K)
P (W)
PR01
Fig.21 Temperature rise (∆T) at the lead end (soldering
point) as a function of dissipated power at
various lead lengths after mounting.
∅0.6 mm FeCu-leads.
Minimum distance from resistor body to PCB = 1 mm.
100
0 0.4 1.2
0
CCB015
0.8
20
40
60
80
∆T
(K)
P (W)
15 mm
20 mm
25 mm
PR01
2001 Jul 13 14
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.22 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.8 mm Cu-leads.
200
0 0.8 2.4
0
MLB679
1.6
40
80
120
160
∆ T
(K)
P (W)
PR02
Fig.23 Temperature rise (∆T) at the lead end (soldering
point) as a function of dissipated power at
various lead lengths after mounting.
∅0.8 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
02
100
0
20
MLB680
40
60
80
1
15 mm
20 mm
25 mm
∆ T
(K)
P (W)
PR02
Fig.24 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.6 mm FeCu-leads.
200
240
0 0.8 2.4
0
MLB681
1.6
40
80
120
160
∆ T
(K)
P (W)
PR02
Fig.25 Temperature rise (∆T) at the lead end
(soldering point) as a function of dissipated
power at various lead lengths after mounting.
∅0.6 mm FeCu-leads.
Minimum distance from resistor body to PCB = 1 mm.
02
100
0
20
MLB682
40
60
80
1
15 mm
20 mm
25 mm
∆ T
(K)
P (W)
PR02
2001 Jul 13 15
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.26 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.8 mm FeCu-leads.
240
200
01
0
CCB016
2
40
80
120
160
∆T
(K)
P (W)
PR02
Fig.27 Temperature rise (∆T) at the lead end (soldering
point) as a function of dissipated power at
various lead lengths after mounting.
∅0.8 mm FeCu-leads.
Minimum distance from resistor body to PCB = 1 mm.
100
0 1.6 2.4
0
CCB017
0.8
20
40
60
80
∆T
(K)
P (W)
15 mm
20 mm
25 mm
PR02
Fig.28 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.8 mm Cu-leads.
200
01 3
0
MLB689
2
40
80
120
160
∆ T
(K)
P (W)
PR03
Fig.29 Temperature rise (∆T) at the lead end (soldering
point) as a function of dissipated power at
various lead lengths after mounting.
∅0.8 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
100
01 3
0
MLB690
2
20
40
60
80
∆ T
(K)
P (W)
15 mm
20 mm
25 mm
PR03
2001 Jul 13 16
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.30 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.6 mm FeCu-leads.
200
240
01 3
0
MLB691
2
40
80
120
160
∆ T
(K)
P (W)
PR03
Fig.31 Temperature rise (∆T) at the lead end
(soldering point) as a function of dissipated
power at various lead lengths after mounting.
∅0.6 mm FeCu-leads.
Minimum distance from resistor body to PCB = 1 mm.
100
01 3
0
MLB692
2
20
40
60
80
∆ T
(K)
P (W)
15 mm
10 mm
20 mm
25 mm
PR03
Fig.32 Hot-spot temperature rise (∆T) as a
function of dissipated power.
∅0.8 mm FeCu-leads.
240
200
01
0
CCB018
32
40
80
120
160
∆T
(K)
P (W)
PR03
Fig.33 Temperature rise (∆T) at the lead end
(soldering point) as a function of dissipated
power at various lead lengths after mounting.
∅0.8 mm FeCu-leads.
Minimum distance from resistor body to PCB = 1 mm.
100
0 1.6 3.22.4
0
CCB019
0.8
20
40
60
80
∆T
(K)
P (W)
15 mm
20 mm
PR03
2001 Jul 13 17
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.34 Impedance as a function of applied frequency.
103
MLB659
102
101
102
1
10
10 1
10 1
10 2
Z
R
f (MHz)
R = 24 Ω
n
R = 12 kΩ
n
R = 1 Ω
R = 100 kΩ
n
n
PR01
Fig.35 Phase angle as a function of applied frequency.
80
120
103
MLB658
102
10110 1
40
0
40
80
f (MHz)
ϕ
(deg) n
R = 24 Ω
n
R = 12 kΩ
n
R = 1 Ω
R = 100 kΩ
n
PR01
2001 Jul 13 18
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.36 Impedance as a function of applied frequency.
103
MLB769
102
101
102
1
10
10 1
10 1
10 2
Z
R
f (MHz)
R = 10 Ω
n
R = 22 kΩ
n
R = 1.2 Ω
R = 124 kΩ
n
n
PR02
Fig.37 Phase angle as a function of applied frequency.
80
120
103
MLB770
102
10110 1
40
0
40
80
120
f (MHz)
ϕ
(deg) n
R = 10 Ω
n
R = 22 kΩ
n
R = 1.2 Ω
R = 124 kΩ
n
PR02
2001 Jul 13 19
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Fig.38 Impedance as a function of applied frequency.
103
MLB771
102
101
102
1
10
10 1
10 2
Z
R
f (MHz)
R = 18 Ω
n
R = 1.3 kΩ
n
R = 20 kΩ
n
R = 1.5 Ω
R = 100 kΩ
n
n
PR03
Fig.39 Phase angle as a function of applied frequency.
60
90
103
MLB772
102
101
30
0
30
60
90
f (MHz)
ϕ
(deg)
n
R = 18 Ω
n
R = 20 kΩ
n
R = 1.3 kΩ
n
R = 1.5 Ω
R = 100 kΩ
n
PR03
2001 Jul 13 20
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
MECHANICAL DATA
Mass per 100 units
Mounting
The resistors are suitable for processing
on automatic insertion equipment and
cutting and bending machines.
TY P E LEAD
MATERIAL
MASS
(g)
PR01 Cu 29
FeCu 29
PR02 Cu 63
FeCu 45
PR03 Cu 110
FeCu 100
Mounting pitch
Note
1. Recommended minimum value.
TYPE LEAD STYLE PITCH
mm e
PR01 straight leads 12.5(1) 5(1)
radial taped 4.8 2
cropped and formed 17.8 7
double kink large pitch 17.8 7
double kink small pitch 12.5 5
PR02 straight leads 15.0(1) 6(1)
radial taped 4.8 2
cropped and formed 17.8 7
double kink large pitch 17.8 7
double kink small pitch 15.0 6
PR03 straight leads 23.0(1) 9(1)
cropped and formed 25.4 10
double kink large pitch 25.4 10
double kink small pitch 20.0 8
Marking
The nominal resistance and tolerance
are marked on the resistor using four
coloured bands in accordance with
IEC publication 60062, “Colour codes
for fixed resistors”.
Outlines
The length of the body (L1) is measured
by inserting the leads into holes of two
identical gauge plates and moving
these plates parallel to each other until
the resistor body is clamped without
deformation
(“IEC publication 60294”).
Table 4 Straight lead type and relevant physical dimensions: see Fig.40
TY P E
∅D
MAX.
(mm)
L1
MAX.
(mm)
L2
MAX.
(mm)
∅d
(mm)
PR01 2.5 6.5 8.5 0.58 ±0.05
PR02 3.9 10.0 12.0 0.8 ±0.03
0.58 ±0.05
PR03 5.2 16.7 19.5 0.8 ±0.03
0.58 ±0.05
For dimensions see Table 4.
Fig.40 Type with straight leads.
∅D
CCB414
L1
L2
∅d
2001 Jul 13 21
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Table 5 Cropped and formed lead type and relevant physical dimensions; see Fig.41
Note
1. Can be replaced by double kinked versions; see Fig.42.
TYPE LEAD STYLE ∅d
(mm)
b
(mm)
h
(mm)
P
(mm)
S
MAX.
(mm)
∅B
MAX.
(mm)
PR01
cropped and formed;
note 1
0.6 ±0.05 1.1 8 17.8 2 1.0
PR02
0.8 ±0.03 1.3 8
17.8
21.2
0.8 ±0.03 1.3 15 3 1.2
0.6 ±0.05 1.1 8 2 1.0
PR03
0.8 ±0.03 1.3 8
25.4
21.2
0.8 ±0.03 1.3 15 3 1.2
0.6 ±0.05 1.1 8 2 1.0
Fig.41 Type with cropped and formed leads.
Dimensions in mm.
For dimensions see Tables 4 and 5.
CCB022
∅D
∅B
P ±0.5
P ±3 ∅d
L
2 min.
b +0.1
0
h +2
−0
5 +1
−0
SP
MAINTENANCE TYPE
2001 Jul 13 22
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
Table 6 Double kink lead type and relevant physical dimensions; see Fig.42
TYPE LEAD STYLE ∅d
(mm)
b1
(mm)
b2
(mm)
∅D
MAX.
(mm)
P1
(mm)
P2
(mm)
S
MAX.
(mm)
∅B
(mm)
PR01
double kink
large pitch 0.58 ±0.05 1.10
+0.25/−0.20
1.45
+0.25/−0.20 2.5
17.8 17.8 2 0.8
double kink
small pitch 0.58 ±0.05 1.10
+0.25/−0.20
1.45
+0.25/−0.20 12.5 12.5 2 0.8
PR02
double kink
large pitch
0.58 ±0.05 1.10
+0.25/−0.20
1.45
+0.25/−0.20
3.9
17.8 17.8 2 0.8
0.8 ±0.03 1.30
+0.25/−0.20
1.65
+0.25/−0.20 17.8 17.8 2 1.0
double kink
small pitch 0.8 ±0.03 1.30
+0.25/−0.20
1.65
+0.25/−0.20 15.0 15.0 2 1.0
PR03
double kink
large pitch
0.58 ±0.05 1.10
+0.25/−0.20
1.45
+0.25/−0.20
5.2
25.4 25.4 2 0.8
0.8 ±0.03 1.30
+0.25/−0.20
1.65
+0.25/−0.20 25.4 25.4 2 1.0
double kink
small pitch 0.8 ±0.03 1.30
+0.25/−0.20
2.15
+0.25/−0.20 22.0 20.0 2 1.0
CCB02
0
∅D
P
1
±0.5
P
2
±3S∅B ±0.07
∅db1
4.5 +1
0
b2
8 + 2
L1
L2
P
1
±0.5
Fig.42 Type with double kink.
Dimensions in mm.
For dimensions see Tables 4 and 6.
2001 Jul 13 23
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the
schedule of “IEC publication 60115-1”, category
LCT/UCT/56 (rated temperature range: Lower Category
Temperature, Upper Category Temperature; damp heat,
long term, 56 days). The testing also covers the requirements
specified by EIA and EIAJ.
The tests are carried out in accordance with IEC publication
60068-2, “Recommended basic climatic and mechanical
robustness testing procedure for electronic components”
and under standard atmospheric conditions according to
“IEC 60068-1”, subclause 5.3.
In Table 7 the tests and requirements are listed with
reference to the relevant clauses of
“IEC publications 60115-1 and 60068-2”; a short
description of the test procedure is also given. In some
instances deviations from the IEC recommendations were
necessary for our method of specifying.
All soldering tests are performed with mildly activated flux.
Table 7 Test procedures and requirements
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
Tests in accordance with the schedule of IEC publication 60115-1
4.4.1 visual examination no holes; clean surface;
no damage
4.4.2 dimensions (outline) gauge (mm) see Tables 4, 5 and 6
4.5 resistance applied voltage (+0/−10%): R −Rnom: max. ±5%
R<10 Ω: 0.1 V
10 Ω≤R<100 Ω:0.3V
100 Ω≤R<1kΩ:1V
1k
Ω≤R<10 kΩ:3V
10 kΩ≤R<100 kΩ:10V
100 kΩ≤R<1MΩ:25V
R= 1M
Ω:50V
4.18 20 (Tb) resistance to
soldering heat
thermal shock: 3 s; 350 °C;
6 mm from body
∆R/R max.: ±1% + 0.05 Ω
4.29 45 (Xa) component solvent
resistance
isopropyl alcohol or H2O
followed by brushing
in accordance with “MIL 202 F”
no visual damage
4.17 20 (Ta) solderability 2 s; 235 °C good tinning; no damage
4.7 voltage proof on
insulation
maximum voltage 500 V (RMS)
during 1 minute; metal block method
no breakdown or flashover
2001 Jul 13 24
BCcomponents Product specification
Professional power metal film resistors PR01/02/03
4.16 21 (U) robustness of
terminations:
4.16.2 21 (Ua1) tensile all samples load 10 N; 10 s number of failures: <1×10−6
4.16.3 21 (Ub) bending half
number of
samples
load 5 N; 4 ×90°number of failures: <1×10−6
4.16.4 21 (Uc) torsion other half
of samples
3×360° in opposite directions no damage
∆R/R max.: ±0.5% + 0.05 Ω
4.20 29 (Eb) bump 3 ×1500 bumps in three directions;
40 g
no damage
∆R/R max.: ±0.5% + 0.05 Ω
4.22 6 (Fc) vibration frequency 10 to 500 Hz; displacement
1.5 mm or
acceleration 10 g; three directions;
total 6 hours (3 ×2 hours)
no damage
∆R/R max.: ±0.5% + 0.05 Ω
4.19 14 (Na) rapid change of
temperature
30 minutes at LCT and
30 minutes at UCT; 5 cycles
no visual damage
PR01: ∆R/R max.: ±1% + 0.05 Ω
PR02: ∆R/R max.: ±1% + 0.05 Ω
PR03: ∆R/R max.: ±2% + 0.05 Ω
4.23 climatic sequence:
4.23.3 30 (Db) damp heat
(accelerated)
1st cycle
4.23.6 30 (Db) damp heat
(accelerated)
remaining cycles
6days;55°C; 95 to 98% RH Rins min.: 103MΩ
∆R/R max.: ±3% + 0.1 Ω
4.24.2 3 (Ca) damp heat
(steady state) (IEC)
56 days; 40 °C; 90 to 95% RH; loaded
with 0.01 Pn (IEC steps: 4 to 100 V)
Rins min.: 1000 MΩ
∆R/R max.: ±3% + 0.1 Ω
4.25.1 endurance
(at 70 °C)
1000 hours; loaded with Pn or Vmax;
1.5 hours on and 0.5 hours off
∆R/R max.: ±5% + 0.1 Ω
4.8.4.2 temperature
coefficient
at 20/LCT/20 °C and 20/UCT/20 °C
(TC ×10−6/K)
≤±250
Other tests in accordance with IEC 60115 clauses and IEC 60068 test method
4.17 20 (Tb) solderability
(after ageing)
8 hours steam or 16 hours 155 °C;
leads immersed 6 mm for 2 ±0.5 s in a
solder bath at 235 ±5°C
good tinning (≥95% covered);
no damage
4.6.1.1 insulation resistance maximum voltage (DC) after 1 minute;
metal block method
Rins min.: 104MΩ
see 2nd amendment
to IEC 60115-1,
Jan. ’87
pulse load see Figs 5, 6, 7, 8, 9 and 10
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
