Features
High surge current capability
Avalanche types available
Stud cathode and stud anode version
Wide current range
Types up to 1200V VRRM
Typical Applications
Battery charges
Converters
Power supplies
Machine tool controls
Parameters 12F(R) Units
IF(AV) 12 A
@ TC144 °C
IF(RMS) 19 A
IFSM @ 50Hz 265 A
@ 60Hz 280 A
I2t@
50Hz 351 A2s
@ 60Hz 320 A2s
VRRM range 100 to 1200 V
TJrange - 65 to 175 °C
Major Ratings and Characteristics
case style
DO-203AA (DO-4)
12F(R) SERIES
STANDARD RECOVERY DIODES
12 A
1
Stud Version
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12F(R) Series
2
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Voltage VRRM, maximum VRSM, maximum non- VR(BR), minimum IRRM max.
Type number Code repetitive peak repetitive peak avalanche @ TJ = 175°C
reverse voltage reverse voltage voltage
VVV(1) mA
10 100 150 --
20 200 275 --
40 400 500 500
12F(R) 60 600 725 750 12
80 800 950 950
100 1000 1200 1150
120 1200 1400 1350
ELECTRICAL SPECIFICATIONS
Voltage Ratings
IF(AV) Max. average forward current 12 A 180° conduction, half sine wave
@ Case temperature 144 °C
IF(RMS) Max. RMS forward current 19 A
PRMaximum non-repetitive 7 K/W 10µs square pulse, TJ = TJ max.
peak reverse power see note (2)
IFSM Max. peak, one-cycle forward, 265 t = 10ms No voltage
non-repetitive surge current 280 t = 8.3ms reapplied
225 t = 10ms 100% VRRM
235 t = 8.3ms reapplied Sinusoidal half wave,
I2t Maximum I2t for fusing 351 t = 10ms No voltage Initial T
J = TJ max.
320 t = 8.3ms reapplied
250 t = 10ms 100% VRRM
226 t = 8.3ms reapplied
I2√t Maximum I2√t for fusing 3510 A2√s t = 0.1 to 10ms, no voltage reapplied
VF(TO)1 Low level value of threshold
voltage
VF(TO)2 High level value of threshold
voltage
rf1Low level value of forward
slope resistance
rf2High level value of forward
slope resistance
VFM Max. forward voltage drop 1.26 V Ipk= 38A, TJ = 25°C, tp = 400µs rectangular wave
Parameter 12F(R) Units Conditions
6.20 (I > π x IF(AV)), TJ = TJ max.
10.70 (16.7% x π x IF(AV) < I < π x IF(AV)), TJ = TJ max.
mΩ
0.97 (I > π x IF(AV)), TJ = TJ max.
0.77 (16.7% x π x IF(AV) < I < π x IF(AV)), TJ = TJ max.
V
A2s
A
Forward Conduction
(2) Available only for Avalanche version, all other parameters the same as 12F.
(1) Avalanche version only available from VRRM 400V to 1200V.
12F(R) Series
3
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180° 0.33 0.26 TJ = TJ max.
120° 0.41 0.44
90° 0.53 0.58
60° 0.78 0.81
30° 1.28 1.29
Conduction angle Sinusoidal conduction Rectangular conduction Units Conditions
K/W
∆RthJC Conduction
(The following table shows the increment of thermal resistence RthJC when devices operate at different conduction angles than DC)
Ordering Information Table
1234 5
Device Code
A 12 F R 120 M
1- A = Avalanche diode
None = Standard diode
2- Current rating: Code = IF(AV)
3- F = Standard device
4- None = Stud Normal Polarity (Cathode to Stud)
R = Stud Reverse Polarity (Anode to Stud)
5- Voltage code: Code x 10 = VRRM (See Voltage Ratings table)
6-None = Stud base DO-203AA (DO-4) 10-32UNF-2A
M = Stud base DO-203AA (DO-4) M5 X 0.8 - (Not available for Avalanche diodes)
6
Parameter 12F(R) Units Conditions
TJMax. junction operating temperature range -65 to 175
Tstg Max. storage temperature range -65 to 200
RthJC Max. thermal resistance, junction to case 2 DC operation
RthCS Max. thermal resistance, case Mounting surface, smooth, flat and
to heatsink greased
T Allowable mounting torque 1.5 +0-10%
Nm Not lubricated threads
13 lbf.in
1.2 +0-10% Nm Lubricated threads
10 lbf.in
wt Approximate weight 7 (0.25) g (oz)
Case style DO-203AA (DO-4) See Outline Table
°C
0.5 K/W
Thermal and Mechanical Specifications
12F(R) Series
4
Bulletin I20205 rev. B 01/05
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Outlines Table
Fig. 1 - Current Ratings Characteristics Fig. 2 - Current Ratings Characteristics
130
140
150
160
170
180
048121620
DC
30°
60°
90°
120°
180°
Maximum Allowab le Case Temperature (°C)
Conduction Period
Average Forward Current (A)
12F(R) Series
R (DC) = 2.0 K/W
thJC
140
150
160
170
180
02468101214
30° 60° 90° 120° 180°
Maximum Allowable Case Temperature (°C)
Conduction Angle
Average Forward Current (A)
12F(R) Series
R (DC) = 2.0 K/W
thJC
Case Style DO-203AA (DO-4)
All dimensions in millimeters (inches)
12F(R) Series
5
Bulletin I20205 rev. B 01/05
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Fig. 3 - Forward Power Loss Characteristics
0255075100
Maximum Allowable Ambient Temperature (°C)
R = 8 K/W - Delta R
thS
A
6 K
/W
10 K/W
12
K
/W
15 K/W
20 K/W
30 K/W
0
2
4
6
8
10
12
14
02468101214
Average Forward Current (A)
RMS Limit
Maximum Average Forward Power Loss (W)
Conduction Angle
180°
120°
90°
60°
30°
12F(R) Series
T = 175°C
J
Fig. 4 - Forward Power Loss Characteristics
0 255075100
Maximum Allowable Ambient Temperature (°C)
R = 6 K/W
- Delta R
thS
A
8 K
/W
10 K/W
12 K/W
15 K/W
20 K/W
30 K/W
0
4
8
12
16
20
0 4 8 121620
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMS Limit
Maximum Average Forward Power Loss (W)
Conduction Period
12F(R) Series
T = 175°C
J
Fig. 5 - Maximum Non-Repetitive Surge Current Fig. 6 - Maximum Non-Repetitive Surge Current
100
125
150
175
200
225
250
110100
Peak Half Sine Wave Forward Current (A)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
12F(R) Series
Initial T = 175°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
100
125
150
175
200
225
250
275
0.01 0.1 1
Peak Half Sine Wave Forward Current (A)
Pulse Train Duration (s)
12F(R) Series
Initial T = 175°C
No Voltage Reapplied
Rated V Reapplied
RRM
J
Versus Pulse Train Duration.
Maximum Non Repetitive Surge Current
12F(R) Series
6
Bulletin I20205 rev. B 01/05
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Fig. 7 - Forward Voltage Drop Characteristics Fig. 8 - Thermal Impedance ZthJC Characteristics
1
10
100
1000
0123456
T = 25°C
J
Instantaneous Forward Current (A)
Instantaneous Forward Voltage (V)
12F(R) Series
T = 175°C
J
0.1
1
10
0.001 0.01 0.1 1 10
Square Wave Pulse Duration (s)
thJC
Transient Thermal Impedance Z (K/W)
12F(R) Series
Steady State Value
R = 2.0 K/W
(DC Operation)
thJC
