1/5
BZW50-10,B/180,B
TRANSIL
TM
s
PEAK PULSE POWER : 5000 W (10/1000
s)
s
STAND-OFF VOLTAGE RANGE :
From 10V to 180V
s
UNI AND BIDIRECTIONAL TYPES
s
LOW CLAMPING FACTOR
s
FAST RESPONSE TIME
s
UL RECOGNIZED
FEATURES
R6
Symbol
Parameter
Value
Unit
P
PP
Peak pulse power dissipation (see note 1)
Tj initial = T
amb
5000
W
P
Power dissipation on infinite heatsink
T
amb
= 75C
6.5
W
I
FSM
Non repetitive surge peak forward current
for unidirectional types
tp = 10ms
Tj initial = T
amb
500
A
T
stg
T
j
Storage temperature range
Maximum junction temperature
- 65 to + 175
175
C
C
T
L
Maximum lead temperature for soldering during 10s at 5mm
from case
230
C
Note 1 : For a surge greater than the maximum values, the diode will fail in short-circuit.
ABSOLUTE MAXIMUM RATINGS (T
amb
= 25C)
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.
February 2003- Ed : 4A
Symbol
Parameter
Value
Unit
R
th (j-l)
Junction to leads
15
C/W
R
th (j-a)
Junction to ambient on printed circuit.
L
lead
= 10 mm
65
C/W
THERMAL RESISTANCES
BZW50-10,B/180,B
2/5
I
I F
V F
V
VCL
VBR
VRM
I PP
I RM
V
Symbol
Parameter
V
RM
Stand-off voltage
V
BR
Breakdown voltage
V
CL
Clamping voltage
I
RM
Leakage current @ V
RM
I
PP
Peak pulse current
T
Voltage temperature coefficient
V
F
Forward voltage drop
ELECTRICAL CHARACTERISTICS (T
amb
= 25C)
Types
I
RM
@ V
RM
V
BR
@
I
R
V
CL
@ I
PP
V
CL
@ I
PP
T
C
max
min
max
max
max
typ
note2
10/1000
s
8/20
s
note3
note4
Unidirectional
Bidirectional
A
V
V
mA
V
A
V
A
10
-4
/ C
pF
BZW50-10
BZW50-10B
5
10
11.1
1
18.8
266
23.4
2564
7.8
24000
BZW50-12
BZW50-12B
5
12
13.3
1
22
227
28
2143
8.4
18500
BZW50-15
BZW50-15B
5
15
16.6
1
26.9
186
35
1714
8.8
13500
BZW50-18
BZW50-18B
5
18
20
1
32.2
155
41.5
1446
9.2
11500
BZW50-22
BZW50-22B
5
22
24.4
1
39.4
127
51
1177
9.6
8500
BZW50-27
BZW50-27B
5
27
30
1
48.3
103
62
968
9.8
7000
BZW50-33
BZW50-33B
5
33
36.6
1
59
85
76
789
10
5750
BZW50-39
BZW50-39B
5
39
43.3
1
69.4
72
90
667
10.1
4800
BZW50-47
BZW50-47B
5
47
52
1
83.2
60.1
108
556
10.3
4100
BZW50-56
BZW50-56B
5
56
62.2
1
99.6
50
129
465
10.4
3400
BZW50-68
BZW50-68B
5
68
75.6
1
121
41
157
382
10.5
3000
BZW50-82
BZW50-82B
5
82
91
1
145
34
189
317
10.6
2600
BZW50-100
BZW50-100B
5
100
111
1
179
28
228
263
10.7
2300
BZW50-120
BZW50-120B
5
120
133
1
215
23
274
219
10.8
1900
BZW50-150
BZW50-150B
5
150
166
1
269
19
343
175
10.8
1700
BZW50-180
BZW50-180B
5
180
200
1
322
16
410
146
10.8
1500
Note 2 :
Pulse test: tp < 50 ms.
Note 3 :
VBR =
T * (Tamb - 25) * VBR(25C)
Note 4 :
VR = 0 V, F = 1 MHz. For bidirectional types,
capacitance value is divided by 2.
Fig. 1: Peak pulse power dissipation versus initial
junction temperature (printed circuit board).
10 s
1000 s
% I
PP
50
0
t
PULSE WAVEFORM 10/1000
s
100
BZW50-10,B/180,B
3/5
0.001
0.01
0.1
1
10
100
1E2
1E3
1E4
1E5
1E6
1E7
tp (ms ) EXPO.
Tj initial = 25C
Pp (W)
p
Fig. 2 : Peak pulse power versus exponential pulse duration.
Fig. 3 :
Clamping voltage versus peak pulse current.
Exponential waveform
t
p
= 20
s________
t
p
= 1 ms-----------
t
p
= 10 ms...............
Note : The curves of the figure 3 are specified for a junction temperature of 25C before surge.
The given results may be extrapolated for other junction temperatures by using the following formula :
V
BR
=
T* (T
amb
-25) * V
BR
(25C).
For intermediate voltages, extrapolate the given results.
BZW50-10,B/180,B
4/5
Fig. 6 : Transient thermal impedance junc-
tion-ambient versus pulse duration (For FR4 PC
Board with L
lead
= 10mm).
Fig. 5 : Peak forward voltage drop versus peak
forward current (typical values for unidirectional
types).
Fig. 4b : Capacitance versus reverse applied
voltage for bidirectional types (typical values).
Fig. 4a : Capacitance versus reverse applied
voltage for unidirectional types (typical values).
Note : Multiply by 2 for units with VBR > 220V.
Fig. 7 : Relative variation of leakage current
versus junction temperature.
BZW50-10,B/180,B
5/5
Packaging : standard packaging is tape and reel.
BZW 50
10 B RL
-
5000W
STAND-OFF VOLTAGE
BIDIRECTIONAL
No suffix: unidirectional
PACKAGING:
' ' = Ammopack tape
'RL' = Tape & reel
ORDER CODE
Weight = 2.048 g.
MARKING : Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).
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.
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - Finland - France - Germany
Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore
Spain - Sweden - Switzerland - United Kingdom - United States.
http://www.st.com
PACKAGE MECHANICAL DATA
R6 (Plastic)
REF.
DIMENSIONS
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
8.6
9.1
0.338
0.358
B
25.4
1
C
8.6
9.1
0.338
0.358
D
1.2
1.3
0.047
0.051
B
D
C
A
B
PDF 
ZIP