Power Metal Film Resistors
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1Revision: 14-Dec-04
PR01S/PR02S/PR03S
Vishay BCcomponents
FEATURES
•High power in small packages
•Stable metal film on high quality ceramic
•Excellent stability
•4/5 band color coding.
APPLICATIONS
•All general purpose commercial and professional
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 plated with 100% pure tin 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”.
Note
1. 1 % tolerance is available for Rn-range from 1R upwards.
TECHNICAL SPECIFICATIONS
DESCRIPTION VALUE
PR01S PR02S PR03S
Resistance range 0.22 Ωto 1 MΩ0.33 Ωto 1 MΩ0.68 Ωto1MΩ
Resistance tolerance and series(1) ± 1 % (E24, E96 series); ± 5 % (E24 series); see note 1
Maximum dissipation at Tamb =70°C:
R<1Ω0.6 W 1.2 W 1.6 W
1Ω≤R1W2W3W
Thermal resistance (Rth) 135 K/W 75 K/W 60 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 ΔR/R max.: ± 5 % + 0.1 Ω
climatic tests ΔR/R max.: ± 3 % + 0.1 Ω
soldering ΔR/R max.: ± 1 % + 0.05 Ω
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PR01S/PR02S/PR03S
Power Metal Film Resistors Vishay BCcomponents
STRAIGHT LEADS
KINKED LEADS
12NC ORDERING CODE - indicating resistor type and packaging
TYPE LEAD ∅
(mm)
TOL
(%)
ORDERING CODE 2315 ... ..... (BANDOLIER)
AMMOPACK
52 mm 52 mm 63 mm
5000
units
1000
units
500
units
PR01S Cu 0.6 1 196 1.... 191 2.... −
5 193 14... 197 53... −
PR02S Cu 0.8 1 −197 1.... −
5−198 53... −
PR03S Cu 0.8 5 −−195 14...
1−−199 6...
12NC ORDERING CODE - indicating resistor type and packaging
TYPE LEAD ∅
(mm)
TOL
(%)
ORDERING CODE 2315 ... ..... (LOOSE IN BOX)
DOUBLE KINK
PITCH = 17.8 (mm) PITCH = 25.4 (mm)
1000
units
500
units
PR01S Cu 0.6 5 193 03... −
PR02S Cu 0.8 5 194 23... −
PR03S Cu 0.8 5 −195 23...
ORDERING INFORMATION
Ordering Code (12NC)
The resistors have a 12-digit ordering code starting with
2315.
For 5 % tolerance:
•The first 9 digits indicate the resistor type and packaging.
•The remaining 3 digits indicate the resistance value:
– The first 2 digits indicate the resistance value.
– The last digit indicates the resistance decade.
For 1% tolerance:
•The first 8 digits indicate the resistor type and packaging.
•The remaining 4 digits indicate the resistance value:
– The first 3 digits indicate the resistance value.
– The last digit indicates the resistance decade.
Last Digit of 12NC Indicating Resistance Decade
Ordering Example
The ordering code for resistor type PR02S with Cu leads and
a value of 750 Ω with 5 % tolerance, supplied on a bandolier
of 1000 units in ammopack, is: 2315 198 53751.
RESISTANCE DECADE LAST DIGIT
0.22 to 0.91 Ω7
1to9.76Ω8
10 to 97.6 Ω9
100 to 976 Ω1
1to9.76kΩ2
10 to 97.6 kΩ3
100 to 976 kΩ4
1MΩ5
DIMENSIONS
DIMENSIONS - straight lead type and relevant physical dimensions; see straight leads outline
TYPE ∅D
MAX. (mm)
L1
MAX. (mm)
L2
MAX. (mm)
∅d (mm)
Cu
PR01S 2.5 6.5 8.5 0.58 ± 0.05
PR02S 3.9 10.0 12.0 0.78 ± 0.05
PR03S 5.2 16.7 19.5 0.78 ± 0.05
∅D
L1
L2
∅d
Type with straight leads.
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PR01S/PR02S/PR03S
Vishay BCcomponents Power Metal Film Resistors
∅D
P1 ±0.5
P2 ±3S∅B
±0.07
∅db1
4.5 +1
0
b2
8 + 2
L1
L2
P1 ±0.5
Type with double kink. Dimensions in millimeters.
DIMENSIONS - double kink lead type and relevant physical dimensions; see double kinked outline
TYPE LEAD STYLE
∅d
mm) b1
(mm)
b2
(mm)
∅D
MAX.
(mm)
P1
(mm)
P2
(mm)
S
MAX.
(mm)
∅B
(mm)
Cu
PR01S 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
PR02S double kink
large pitch 0.78 ± 0.05 1.10
+ 0.25/−0.20
1.45
+ 0.25/−0.20 3.9 17.8 17.8 2 0.8
PR03S double kink
large pitch 0.78 ± 0.05 1.10
+ 0.25/−0.20
1.65
+ 0.25/−0.20 5.2 25.4 25.4 2 1.0
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”).
MOUNTING
The resistors are suitable for processing on automatic
insertion equipment and cutting and bending machines.
Note
1. Recommended minimum value.
MASS PER 100 UNITS
TYPE MASS
(g)
PR01S 28
PR02S 62
PR03S 120
MOUNTING PITCH
TYPE LEAD STYLE
PITCH
mm e
PR01S straight leads 12.5(1) 5(1)
double kink large pitch 17.8 7
PR02S straight leads 15.0(1) 6(1)
double kink large pitch 17.8 7
PR03S straight leads 23.0(1) 9(1)
double kink large pitch 25.4 10
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PR01S/PR02S/PR03S
Power Metal Film Resistors Vishay BCcomponents
FUNCTIONAL DESCRIPTION
PRODUCT CHARACTERIZATION
Standard values of nominal resistance are taken from the E96/E24 series for resistors with a tolerance of ± 1 % or ± 5 %.
The values of the E96/E24 series are in accordance with “IEC publication 60063”.
FUNCTIONAL PERFORMANCE
Δ
PR01S Drift nomogram.
PR02S Drift nomogram.
P
(W)
T (°C)
m
3.00
2.25
1.50
0.75
T =
amb40 °C 70 °C
100 °C
125 °C
155 °C
250 °C
Δ 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
PR03S Drift nomogram.
Notes
1. The maximum voltage that may be continuously applied to the resistor element, see “IEC publication 60115-1”.
2. The maximum permissible hot-spot temperature is 205 °C for PR01S, 220 °C for PR02S and 250 °C for PR03S.
LIMITING VALUES
TYPE LEAD MATERIAL RANGE LIMITING VOLTAGE(1)
(V)
LIMITING POWER
(W)
PR01S Cu R<1Ω350 0.6
1Ω≤R1.0
PR02S Cu R<1Ω500 1.2
1Ω≤R2.0
PR03S Cu R<1Ω750 1.6
1 Ω≤R3.0
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PR01S/PR02S/PR03S
Vishay BCcomponents Power Metal Film Resistors
The power that the resistor can disipate depends on the operating temperature.
Derating
70 10050
0
0
50
100
155
−55
Tamb (°C)
Pmax
(%Prated)
Maximum dissipation (Pmax) in percentage of rated power as a function of the ambient temperature (Tamb).
10
−1
10
−2
10
−3
10
−4
10
−5
10
−6
10
−1
1
1
10
10
2
10
3
t
i
(s)
2
P
max
(W)
5
10
20
50
200
500
t
p
/t
i
= 1000
100
PR01S Pulse on a regular basis; maximum permissible peak pulse power as a function of pulse duration (ti).
Pmax
()
Pulse Loading Capabilities
1200
0
10
6
10
5
10
4
10
3
10
2
10
1
1
800
1000
600
200
400
Vmax
(V)
ti(s)
PR01S Pulse on a regular basis; maximum permissible peak pulse voltage as a function of pulse duration (ti).
Vmax
()
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PR01S/PR02S/PR03S
Power Metal Film Resistors Vishay BCcomponents
10
5
10
4
10
3
10
2
10
1
1
10
3
1
10
10
2
Pmax
(W)
ti(s)
10
6
10
1
2
5
10
20
50
100
200
500
pi
t /t = 1000
PR02S Pulse on a regular basis; maximum permissible peak pulse power as a function of pulse duration (ti).
Pmax
()
1700
500
10 610 510 410 310 210 11
1300
1500
11 0
0
700
900
Vmax
(V)
ti(s)
PR02S Pulse on a regular basis; maximum permissible peak pulse voltage as a function of pulse duration (ti).
Vmax
()
Pulse Loading Capabilities
10 510 410 310 210 11
10 3
10 4
1
10
10 2
Pmax
(W)
ti(s)
10 6
2
5
10
20
50
100
200
500
pi
t /t = 1000
PR03S Pulse on a regular basis; maximum permissible peak pulse power as a function of pulse duration (ti).
Pmax
()
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PR01S/PR02S/PR03S
Vishay BCcomponents Power Metal Film Resistors
Pulse Loading Capabilities
2400
0
10
6
10
5
10
4
10
3
10
2
10
1
1
1600
2000
1200
400
800
Vmax
(V)
ti(s)
PR03S Pulse on a regular basis; maximum permissible peak pulse voltage as a function of pulse duration (ti).
Vmax
()
200
0 0.4 1.2
0
0.8
40
80
120
160
Δ T
(K)
P (W)
PR01S Hot-spot temperature rise (ΔT) as a
function of dissipated power.
Ø0.6 mm Cu-leads.
Application Information
100
0 0.4 1.2
0
0.8
20
40
60
80
Δ T
(K)
P (W)
15 mm
20 mm
25 mm
PR01S
Temperature rise (
Δ
T) at the lead end (soldering point)
as a
function of dissipated power at various lead lengths after mounting.
Ø0.6 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
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PR01S/PR02S/PR03S
Power Metal Film Resistors Vishay BCcomponents
200
00.82.4
0
1.6
40
80
120
160
Δ T
(K)
P (W)
PR02S Hot-spot temperature rise (ΔT) as a function of
dissipated power.
Ø0.8 mm Cu-leads.
02
100
0
20
40
60
80
1
15 mm
20 mm
25 mm
Δ T
(K)
P (W)
PR02S
Temperature rise (
Δ
T) at the lead end (soldering point)
as a
function of dissipated power at various lead lengths after mounting.
Ø0.8 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
Application Information
PR03S Hot-spot temperature rise (ΔT) as a function of
dissipated power.
Ø0.8 mm Cu-leads.
200
01 3
0
2
40
80
120
160
Δ T
(K)
P (W)
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PR01S/PR02S/PR03S
Vishay BCcomponents Power Metal Film Resistors
Application Information
100
01 3
0
2
20
40
60
80
Δ T
(K)
P (W)
15 mm
20 mm
25 mm
PR0S
Temperature rise (
Δ
T) at the lead end (soldering point)
as a
function of dissipated power at various lead lengths after mounting.
Ø0.8 mm Cu-leads.
Minimum distance from resistor body to PCB = 1 mm.
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 the Test Procedures and Requirements table, 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.
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 Straight & Kinked Dimensions tables
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
1kΩ≤R<10 kΩ:3V
10 kΩ≤R<100 kΩ:10V
100 kΩ≤R<1MΩ:25V
R= 1MΩ:50V
4.18 20 (Tb)
resistance to soldering heat
thermal shock: 3 s; 350 °C; 3 mm from body ΔR/R max.: ± 1 % + 0.05 Ω
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PR01S/PR02S/PR03S
Vishay BCcomponents Power Metal Film Resistors
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
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
Δ
R/R max.:
±
0.5 % + 0.05
Ω
4.20 29 (Eb) bump 3 ×1500 bumps in three directions; 40 g
no damage
Δ
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
ΔR/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
PR01S: ΔR/R max.: ± 1 % + 0.05 Ω
PR02S: ΔR/R max.: ± 1 % + 0.05 Ω
PR03S: ΔR/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
ΔR/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
ΔR/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
ΔR/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 Pulse Load Capabilities graphs
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
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Document Number: 91000 www.vishay.com
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Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
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