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BZW50-10,B/180,B
TRANSILTM
■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
FEATURES
R6
Symbol Parameter Value Unit
PPP Peak pulse power dissipation (see note 1) Tj initial = Tamb 5000 W
PPower dissipation on infinite heatsink Tamb = 75°C 6.5 W
IFSM Non repetitive surge peak forward current
for unidirectional types tp = 10ms
Tj initial = Tamb 500 A
Tstg
TjStorage temperature range
Maximum junction temperature -65to+175
175 °C
°C
TLMaximum 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 (Tamb = 25°C)
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
Rth (j-l) Junction to leads 15 °C/W
Rth (j-a) Junction to ambient on printed circuit. Llead =10mm 65 °C/W
THERMAL RESISTANCES
®
BZW50-10,B/180,B
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I
IF
VF
VVCL VBR
VRM
IPP
IRM V
Symbol Parameter
VRM Stand-off voltage
VBR Breakdown voltage
VCL Clamping voltage
IRM Leakage current @ VRM
IPP Peak pulse current
αTVoltage temperature coefficient
VFForward voltage drop
ELECTRICAL CHARACTERISTICS (Tamb = 25°C)
Types IRM @V
RM VBR @I
RV
CL @I
PP VCL @I
PP αTC
max min max max max typ
note2 10/1000µs 8/20µs note3 note4
Unidirectional Bidirectional µAVVmAVAVA10
-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<50ms.
Note 3 : ∆VBR =αT*(Tamb - 25) *VBR(25°C)
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
0t
PULSE WAVEFORM 10/1000 s
100
BZW50-10,B/180,B
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0.001 0.01 0.1 1 10 100
1E2
1E3
1E4
1E5
1E6
1E7
tp (ms ) EXPO.
Tj initial = 25øC
Pp (W)
°
p
Fig. 2 : Peak pulse power versus exponential pulse duration.
Fig. 3 : Clamping voltage versus peak pulse current.
Exponential waveform tp=20µs________
tp= 1 ms—————-
tp= 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 :
∆VBR =αT* (Tamb -25) * VBR (25°C).
For intermediate voltages, extrapolate the given results.
BZW50-10,B/180,B
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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
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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).
Informationfurnishedisbelievedtobeaccurateandreliable.However,STMicroelectronicsassumesnoresponsibilityfortheconsequencesof
useofsuchinformationnorforanyinfringementofpatentsorotherrightsofthirdpartieswhichmayresultfromitsuse.Nolicenseisgrantedby
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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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
AB
