®
BZW50-10,B/180,B
TRANSIL
TM
FEATURES
s
s
s
s
s
s
PEAK PULSE POWER : 5000 W (10/1000µs)
STAND-OFF VOLTAGE RANGE :
From 10V to 180V
UNI AND BIDIRECTIONAL TYPES
LOW CLAMPING FACTOR
FAST RESPONSE TIME
UL RECOGNIZED
DESCRIPTION
Transil diodes provide high overvoltage protection
by clamping action. Their instantaneous response
to transient overvoltages makes them particu-
larly suited to protect voltage sensitive devices
such as MOS Technology and low voltage sup-
plied IC’s.
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25°C)
Symbol
P
PP
P
I
FSM
T
stg
T
j
T
L
Parameter
Peak pulse power dissipation (see note 1)
Power dissipation on infinite heatsink
Non repetitive surge peak forward current
for unidirectional types
Storage temperature range
Maximum junction temperature
Maximum lead temperature for soldering during 10s at 5mm
from case
Tj initial = T
amb
T
amb
= 75°C
tp = 10ms
Tj initial = T
amb
Value
5000
6.5
500
- 65 to + 175
175
230
Unit
W
W
A
°C
°C
°C
R6
Note 1
: For a surge greater than the maximum values, the diode will fail in short-circuit.
THERMAL RESISTANCES
Symbol
R
th (j-l)
R
th (j-a)
Junction to leads
Junction to ambient on printed circuit.
L
lead
= 10 mm
Parameter
Value
15
65
Unit
°C/W
°C/W
February 2003- Ed : 4A
1/5
BZW50-10,B/180,B
ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C)
Symbol
V
RM
V
BR
V
CL
I
RM
I
PP
Parameter
Stand-off voltage
Breakdown voltage
Clamping voltage
Leakage current @ V
RM
Peak pulse current
Voltage temperature coefficient
Forward voltage drop
Types
I
RM
@ V
RM
max
µA
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
V
BR
min
note2
Unidirectional
BZW50-10
BZW50-12
BZW50-15
BZW50-18
BZW50-22
BZW50-27
BZW50-33
BZW50-39
BZW50-47
BZW50-56
BZW50-68
BZW50-82
BZW50-100
BZW50-120
BZW50-150
BZW50-180
Bidirectional
BZW50-10B
BZW50-12B
BZW50-15B
BZW50-18B
BZW50-22B
BZW50-27B
BZW50-33B
BZW50-39B
BZW50-47B
BZW50-56B
BZW50-68B
BZW50-82B
BZW50-100B
BZW50-120B
BZW50-150B
BZW50-180B
V
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
V
11.1
13.3
16.6
20
24.4
30
36.6
43.3
52
62.2
75.6
91
111
133
166
200
mA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
@
I
R
V
CL
@ I
PP
max
10/1000µs
V
18.8
22
26.9
32.2
39.4
48.3
59
69.4
83.2
99.6
121
145
179
215
269
322
A
266
227
186
155
127
103
85
72
60.1
50
41
34
28
23
19
16
V
23.4
28
35
41.5
51
62
76
90
108
129
157
189
228
274
343
410
I PP
VCL
VBR
V RM
VF
I RM
V
IF
I
α
T
V
F
V
CL
@ I
PP
max
8/20µs
A
2564
2143
1714
1446
1177
968
789
667
556
465
382
317
263
219
175
146
αT
max
note3
10
-4
/ °C
7.8
8.4
8.8
9.2
9.6
9.8
10
10.1
10.3
10.4
10.5
10.6
10.7
10.8
10.8
10.8
C
typ
note4
pF
24000
18500
13500
11500
8500
7000
5750
4800
4100
3400
3000
2600
2300
1900
1700
1500
% I
PP
100
10 s
Fig. 1:
Peak pulse power dissipation versus initial
junction temperature (printed circuit board).
PULSE WAVEFORM 10/1000 s
50
0
1000 s
t
Note 2 :
Note 3 :
Note 4 :
Pulse test: tp < 50 ms.
∆V
BR =
αT
* (Tamb - 25) * VBR(25°C)
VR = 0 V, F = 1 MHz. For bidirectional types,
capacitance value is divided by 2.
2/5
BZW50-10,B/180,B
Fig. 2 :
Peak pulse power versus exponential pulse duration.
Pp p (W)
1E7
°
C
Tj initial = 25ø
1E6
1E5
1E4
1E3
tp (ms ) EXPO.
1E2
0.001
0.01
0.1
1
10
100
Fig. 3 :
Clamping voltage versus peak pulse current.
Exponential waveform
t
p
= 20
µs________
t
p
= 1 ms—————-
t
p
= 10 ms...............
Note :
The curves of the figure 3 are specified for a junction temperature of 25°C before surge.
The given results may be extrapolated for other junction temperatures by using the following formula :
∆V
BR
=
αT*
(T
amb
-25) * V
BR
(25°C).
For intermediate voltages, extrapolate the given results.
3/5
BZW50-10,B/180,B
Fig. 4a :
Capacitance versus reverse applied
voltage for unidirectional types (typical values).
Fig. 4b :
Capacitance versus reverse applied
voltage for bidirectional types (typical values).
Fig. 5 :
Peak forward voltage drop versus peak
forward current (typical values for unidirectional
types).
Note
: Multiply by 2 for units with VBR > 220V.
Fig. 6 :
Transient thermal impedance junc-
tion-ambient versus pulse duration (For FR4 PC
Board with L
lead
= 10mm).
Fig. 7 :
Relative variation of leakage current
versus junction temperature.
4/5
BZW50-10,B/180,B
ORDER CODE
BZW
5000W
STAND-OFF VOLTAGE
50
-
10
B
RL
PACKAGING:
' ' = Ammopack tape
'RL' = Tape & reel
BIDIRECTIONAL
No suffix: unidirectional
MARKING :
Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).
PACKAGE MECHANICAL DATA
R6 (Plastic)
B
A
B
DIMENSIONS
REF.
Millimeters
Min.
Typ. Max.
9.1
9.1
1.3
Min.
0.338
1
0.338
0.047
0.358
0.051
8.6
25.4
8.6
1.2
Inches
Typ. Max.
0.358
∅D
∅C
A
B
∅
C
∅
D
Packaging
: standard packaging is tape and reel.
Weight
= 2.048 g.
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of
use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - Printed in Italy - All rights reserved.
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