12F(R) SERIES
STANDARD RECOVERY DIODES
12 A
1
Stud Version
Bulletin I20205 rev. A 09/98
www.irf.com
Features
High surge current capability
Avalanche types available
Stud cathode and stud anode version
Wide current range
Types up to 1200V V
RRM
Typical Applications
Battery charges
Converters
Power supplies
Machine tool controls
Parameters
12F(R)
Units
I
F(AV)
12
A
@ T
C
144
C
I
F(RMS)
19
A
I
FSM
@
50Hz
265
A
@ 60Hz
280
A
I
2
t
@
50Hz
351
A
2
s
@ 60Hz
320
A
2
s
V
RRM
range
100 to 1200
V
T
J
range
- 65 to 175
C
Major Ratings and Characteristics
case style
DO-203AA (DO-4)
12F(R) Series
2
Bulletin I20205 rev. A 09/98
www.irf.com
Voltage
V
RRM
, maximum
V
RSM
, maximum non-
V
R(BR)
, minimum
I
RRM
max.
Type number
Code
repetitive peak
repetitive peak
avalanche
@ T
J
= 175C
reverse voltage
reverse voltage
voltage
V
V
V
(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
I
F(AV)
Max. average forward current
12
A
180 conduction, half sine wave
@ Case temperature
144
C
I
F(RMS)
Max. RMS forward current
19
A
P
R
Maximum non-repetitive
7
K/W
10s square pulse, T
J
= T
J
max.
peak reverse power
see note (2)
I
FSM
Max. peak, one-cycle forward,
265
t = 10ms
No voltage
non-repetitive surge current
280
t = 8.3ms
reapplied
225
t = 10ms
100% V
RRM
235
t = 8.3ms
reapplied
Sinusoidal half wave,
I
2
t
Maximum I
2
t for fusing
351
t = 10ms
No voltage
Initial T
J
= T
J
max.
320
t = 8.3ms
reapplied
250
t = 10ms
100% V
RRM
226
t = 8.3ms
reapplied
I
2
t
Maximum I
2
t for fusing
3510
A
2
s
t = 0.1 to 10ms, no voltage reapplied
V
F(TO)1
Low level value of threshold
voltage
V
F(TO)2
High level value of threshold
voltage
r
f
1
Low level value of forward
slope resistance
r
f
2
High level value of forward
slope resistance
V
FM
Max. forward voltage drop
1.26
V
I
pk
= 38A, T
J
= 25C, t
p
= 400s rectangular wave
Parameter
12F(R)
Units Conditions
6.20
(I >
x I
F(AV)
), T
J
= T
J
max.
10.70
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
m
0.97
(I >
x I
F(AV)
), T
J
= T
J
max.
0.77
(16.7% x
x I
F(AV)
< I <
x I
F(AV)
), T
J
= T
J
max.
V
A
2
s
A
Forward Conduction
(2) Available only for Avalanche version, all other parameters the same as 12F.
(1) Avalanche version only available from V
RRM
400V to 1200V.
12F(R) Series
3
Bulletin I20205 rev. A 09/98
www.irf.com
180
0.33
0.26
T
J
= T
J
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
R
thJC
Conduction
(The following table shows the increment of thermal resistence R
thJC
when devices operate at different conduction angles than DC)
Ordering Information Table
1
2
3
4
5
Device Code
A
12
F
R
120
M
1
-
A
= Avalanche diode
None = Standard diode
2
-
Current rating: Code = I
F(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 = V
RRM
(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
T
J
Max. junction operating temperature range
-65 to 175
T
stg
Max. storage temperature range
- 65 to 200
R
thJC
Max. thermal resistance, junction to case
2
DC operation
R
thCS
Max. thermal resistance, case
Mounting surface, smooth, flat and
to heatsink
greased
T
Mounting torque, 10%
1.2
Nm
Lubricated threads
(1.5)
(Not lubricated threads)
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. A 09/98
www.irf.com
Outlines Table
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
130
140
150
160
170
180
0
4
8
12
16
20
DC
30
60
90
120
180
M
a
x
i
m
u
m
A
l
l
o
w
a
b
l
e
C
a
s
e
T
e
m
p
er
at
ur
e (
C)
Conduction Period
Average Forward Current (A)
12F(R) Series
R (DC) = 2.0 K/W
thJC
140
150
160
170
180
0
2
4
6
8
10
12
14
30
60
90
120 180
M
a
x
i
m
u
m
A
l
l
o
w
abl
e C
a
s
e
T
e
m
p
e
r
a
t
ur
e
(
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. A 09/98
www.irf.com
Fig. 3 - Forward Power Loss Characteristics
0
25
50
75
100
Maximum Allowable Ambient Temperature (C)
R
=
8 K
/W
- D
elta
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
0
2
4
6
8
10
12
14
Average Forward Current (A)
RMS Limit
M
a
x
i
m
u
m
A
v
er
ag
e
F
o
r
w
ar
d P
o
w
e
r
Lo
s
s
(
W
)
Conduction Angle
180
120
90
60
30
12F(R) Series
T = 175C
J
Fig. 4 - Forward Power Loss Characteristics
0
25
50
75
100
Maximum Allowable Ambient Temperature (C)
R
= 6
K
/W
- D
elta
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
12
16
20
DC
180
120
90
60
30
Average Forward Current (A)
RMS Limit
M
a
x
i
m
u
m
A
v
er
ag
e F
o
r
w
ar
d
P
o
w
e
r
L
o
s
s
(
W
)
Conduction Period
12F(R) Series
T = 175C
J
Fig. 5 - Maximum Non-Repetitive Surge Current
Fig. 6 - Maximum Non-Repetitive Surge Current
100
125
150
175
200
225
250
1
10
100
P
e
ak
H
a
l
f
S
i
ne W
a
v
e
F
o
r
w
ar
d
C
u
r
r
ent
(
A
)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
12F(R) Series
Initial T = 175C
@ 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
P
e
a
k
H
a
l
f
S
i
n
e
W
a
v
e
F
o
r
w
ar
d C
u
r
r
en
t
(
A
)
Pulse Train Duration (s)
12F(R) Series
Initial T = 175C
No Voltage Reapplied
Rated V Reapplied
RRM
J
Versus Pulse Train Duration.
Maximum Non Repetitive Surge Current
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