# TVS Diode, BZW04, Unidirectional, 342 V, 548 V, DO-41 (DO-204AL), 2 Pins

![Product image](https://novapart.co/image/farnell:2677547/)

**URL**: https://novapart.co/products/BZW04-342./tvs-diode-bzw04-unidirectional-342-v-548-do-41
**SKU**: BZW04-342.
**Manufacturer**: TAIWAN SEMICONDUCTOR
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.0790
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| No. Of Pins | 2Pins |
| Tvs Polarity | Unidirectional |
| Product Range | BZW04 |
| Diode Mounting | Through Hole |
| Diode Case Style | DO-41 (DO-204AL) |
| Clamping Voltage Max | 548V |
| Reverse Standoff Voltage | 342V |
| Maximum Breakdown Voltage | 420V |
| Minimum Breakdown Voltage | 380V |
| Operating Temperature Max | 175°C |
| Peak Pulse Power Dissipation | 400W |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2677547/)

**BZW04 SERIES** Taiwan Semiconductor 

## **400W, 5.8V - 376V Transient Voltage Suppressor** 

## FEATURES 

- Excellent clamping capability 

- Low impedance surge resistance 

- 400W surge capability at 10 / 1000 μs waveform 

- Very fast response time 

- Typical IR less than 1μA above 10V 

- Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC 

- Halogen-free according to IEC 61249-2-21 

## MECHANICAL DATA 

**DO-204AL (DO-41)** 

**Case:** DO-204AL (DO-41) 

Molding compound, UL flammability classification rating 94V-0 Part no. with suffix "H" means AEC-Q101 qualified Packing code with suffix "G" means green compound (halogen-free) **Terminal:** Pure tin plated leads, solderable per JESD22-B102 Meet JESD 201 class 2 whisker test 

**Weight:** 0.3g (approximately) 

## MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted) 

|MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted)(TA=25°C unless otherwise noted)A=25°C unless otherwise noted)=25°C unless otherwise noted)|MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted)(TA=25°C unless otherwise noted)A=25°C unless otherwise noted)=25°C unless otherwise noted)|MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted)(TA=25°C unless otherwise noted)A=25°C unless otherwise noted)=25°C unless otherwise noted)|MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted)(TA=25°C unless otherwise noted)A=25°C unless otherwise noted)=25°C unless otherwise noted)|
|---|---|---|---|
|PARAMETER|SYMBOL|VALUE|UNIT|
|Peak power dissipation at TA=25°C, Tp=1ms (Note 1)|PPK|400|Watts|
|Steady state power dissipation at TL=75°C<br>lead lengths .375", 9.5mm (Note 2)|PD|1|Watts|
|Peak forward surge current, 8.3 ms single half sine-wave<br>superimposed on rated load (Note 3)|IFSM|40|A|
|Junction to leads|RθJL|60|oC/W|
|Junction to ambient on printed circuit<br>L lead=10mm|RθJA|100|oC/W|
|Operating junction temperature range|TJ|- 55 to +175|°C|
|Storage temperature range|TSTG|- 55 to +175|°C|



Note 1: Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25°C Per Fig. 2 

Note 2: Mounted on 5 x 5 mm Copper Pads to Each Terminal 

Note 3: 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minute Maximum 

## ORDERING INFORMATION 

|ORDERING INFORMATION|ORDERING INFORMATION|ORDERING INFORMATION|ORDERING INFORMATION|ORDERING INFORMATION|ORDERING INFORMATION|
|---|---|---|---|---|---|
|PART NO.|PART NO.<br>SUFFIX|PACKING CODE|PACKING CODE<br>SUFFIX(*)|PACKAGE|PACKING|
|BZW04-xxx<br>(Note 1)|H|A0|G|DO-41|3,000 / Ammo box (52mm taping)|
|||R0||DO-41|5,000 / 13" Paper reel|
|||R1||DO-41|5,000 / 13" Paper reel (Reverse)|
|||B0||DO-41|1,000 / Bulk packing|



Note 1: "xxx" defines voltage from 5.8V (BZW04-5V8) to 376V (BZW04-376) 

*: Optional available 

## EXAMPLE 

|EXAMPLE|EXAMPLE|EXAMPLE|EXAMPLE|EXAMPLE|EXAMPLE|
|---|---|---|---|---|---|
|PREFERRED P/N|PART NO.|PART NO.<br>SUFFIX|PACKING CODE|PACKING CODE<br>SUFFIX|DESCRIPTION|
|BZW04-94HA0G|BZW04-94|H|A0|G|AEC-Q101 qualified<br>Green compound|



Document Number: DS_D1406028 

Version: I15 

**BZW04 SERIES** Taiwan Semiconductor 

## RATINGS AND CHARACTERISTICS CURVES 

(TA=25°C unless otherwise noted) 

FIG. 1 PEAK PULSE POWER RATING CURVE 

**==> picture [281 x 463] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>NON-REPETITIVE<br>PULSE WAVEFORM<br>SHOWN in FIG.3<br>SSH al<br>10<br>ooo<br>pe te Tc cs<br>1 IN TI eT<br>PTfn TeNTTi 8<br>0.1 ETAT ETE TEI | TTT TET<br>0.0001 0.001 0.01 0.1 1 10<br>tp, PULSE WIDTH, (mS)<br>FIG. 3 CLAMPING POWER PULSE WAVEFORM<br>140 PULSE WIDTH(td) is DEFINED<br>Ppp tr=10μs as the POINT WHERE the PEAK<br>CURRENT DECAYS to 50% OF IPPM<br>120 a<br>Peak Value<br>100 = IPPM<br>80 nNCINrp 10/1000μs, WAVEFORM es Half Value-I ee PPM/2 -<br>as DEFINED by R.E.A.<br>60 Po<br>Na<br>40 0<br>es a Ne<br>20 |<br>td<br>0 ~~ | esee<br>0 0.5 1 1.5 2 2.5 3 3.5 4<br>t, TIME ms<br>, PEAK PULSE POWER, W<br>PPM<br>P<br>PEAK PULSE CURRENT (%)<br>**----- End of picture text -----**<br>


**==> picture [135 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
FIG.2 PULSE DERATING CURVE<br>**----- End of picture text -----**<br>


**==> picture [282 x 450] intentionally omitted <==**

**----- Start of picture text -----**<br>
120<br>100 NN<br>80<br>60 ~<br>40 NY<br>~<br>200 Pf ff ff<br>0 25 50 75 100 125 150 175<br>TA, AMBIENT TEMPERATURE ( [°] C)<br>FIG.4 STEADY STATE POWER DERATING CURVE<br>1.25<br>1<br>0.75<br>0.5<br>0.25<br>0<br>0 25 50 75 100 125 150 175 200<br>TL, LEAD TEMPERATURE ( [°] C)<br>A<br>)<br>PP<br>) OR CURRENT (I<br>PP<br>DERATING IN PERCENTAGE (%)<br>PEAK PULSE POWER(P<br>DISSIPATION (W)<br>PM(AV), STEADY STATE POWER<br>**----- End of picture text -----**<br>


FIG. 5 MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT UNIDIRECTIONAL ONLY 

**==> picture [284 x 177] intentionally omitted <==**

**----- Start of picture text -----**<br>
50<br>40<br>aa lll<br>30<br>tLilll ALL<br>20<br>10 8.3ms Single Half  (eat<br>Sine Wave<br>e e<br>0<br>1 10 100<br>V(BR), BREAKDOWN VOLTAGE (V)<br>PEAK FORWARD SURGE CURRENT(A)<br>**----- End of picture text -----**<br>


Document Number: DS_D1406028 

Version: I15 

**BZW04 SERIES** Taiwan Semiconductor 

**==> picture [198 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
FIG. 6 TYPICAL REVERSE CHARACTERISTICS<br>**----- End of picture text -----**<br>


**==> picture [286 x 192] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>10 a MEASURED AT DEVICES<br>STAND-OFF<br>VOLTAGE, VWM<br>1 Pe<br>po<br>a<br>0.1<br>SS<br>a ee ee ee<br>0.01 I<br>0 50 100 150 200 250 300 350 400 450 500<br>V(BR), BREAKDOWN VOLTAGE (V)<br>A<br>CURRENT(A)<br>INSTANTANEOUS REVERSE<br>**----- End of picture text -----**<br>


**==> picture [174 x 17] intentionally omitted <==**

**----- Start of picture text -----**<br>
FIG.7 TYPICAL JUNCTION CAPACITANCE<br>UNDIRECTIONAL<br>**----- End of picture text -----**<br>


**==> picture [282 x 186] intentionally omitted <==**

**----- Start of picture text -----**<br>
100000<br>f=1.0MHz<br>Vsig=50mVp-p<br>pS<br>MEASURE AT<br>ZERO BIAS<br>10000<br>a<br>SSS<br>PS NY<br>1000<br>MEASURE AT<br>-— STAND-OFF PSH<br>| VOLTAGE, VWM | of |AN<br>100 a rs<br>1.0 10.0 100.0<br>V(BR), BREAKDOWN VOLTAGE (V)<br>JUNCTION CAPACITANCE(pF)<br>**----- End of picture text -----**<br>


Document Number: DS_D1406028 

Version: I15 

**BZW04 SERIES04 SERIES4 SERIESSERIESERIESS** Taiwan Semiconductor 

~~<) a~~ **BZW04 SERIES04 SERIES4 SERIESSERIESERIESS** 

|Device<br>~~oe~~|Device<br>~~oe~~|@ IT(Note 1)<br>Voltage<br>Breakdown<br>~~po~~|@ IT(Note 1)<br>Voltage<br>Breakdown<br>~~po~~|Test<br>Current<br>~~po~~|Stand-Off<br>Voltage<br>~~po~~|Reverse<br>Leakage<br>@ VWM<br>~~po~~|Maximum<br>Peak Pulse<br>Current<br>~~po~~|Maximum<br>Clamping<br>Voltage @IPPM<br>~~po~~|Maximum<br>Temperature<br>Coefficient<br>~~po~~|
|---|---|---|---|---|---|---|---|---|---|
|||VBR<br>~~po~~||IT<br>~~po~~|VWM<br>~~po~~|ID<br>~~po~~|IPPM<br>~~po~~|Vc<br>~~po~~|VBR<br>~~po~~|
|||V<br>~~po~~||mA<br>~~po~~|V<br>~~po~~|μA<br>~~po~~<br>~~QO~~|A<br>~~po~~<br>~~QO~~|V<br>~~po~~<br>~~CO~~|%/°C<br>~~po~~|
|Unidirectional<br>~~oe~~<br>~~a GQ~~|Bidirectional<br>~~oe~~<br>~~GQ~~|Min<br>~~po~~<br>~~GQ~~|Max<br>~~po~~<br>~~GQ~~|~~po~~<br>~~GQ~~|~~po~~<br>~~GQ~~|(Note 3)<br>~~po~~<br>~~GQ~~<br>~~QO~~|~~po~~<br>~~GQ~~<br>~~QO~~|~~po~~<br>~~GQ~~<br>~~CO~~|~~po~~<br>~~GQ~~|
|BZW04-5V8<br>~~po~~<br>~~po~~|BZW04-5V8B<br>~~po~~<br>~~po~~|6.45<br>~~po~~|7.14<br>~~po~~|10<br>~~po~~|5.80<br>~~po~~|1000<br>~~QO~~<br>~~po~~|38.0<br>~~QO~~<br>~~po~~|10.5<br>~~CO~~<br>~~po~~|0.057<br>~~po~~|
|BZW04-6V4<br>~~po~~<br>~~po~~|BZW04-6V4B<br>~~po~~<br>~~po~~|7.13|7.88|10|6.40|500|35.4|11.3|0.061|
|BZW04-7V0<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-7V0B<br>~~po~~<br>~~po~~<br>~~po~~|7.79|8.61|10|7.02|200|33.0|12.1|0.065|
|BZW04-7V8<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-7V8B<br>~~po~~<br>~~po~~<br>~~po~~|8.65|9.55|1|7.78|50|30.0|13.4|0.068|
|BZW04-8V5<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-8V5B<br>~~po~~<br>~~po~~<br>~~po~~|9.50|10.5|1|8.55|10|27.6|14.5|0.073|
|BZW04-9V4<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-9V4B<br>~~po~~<br>~~po~~<br>~~po~~|10.5|11.6|1|9.40|5|25.7|15.6|0.075|
|BZW04-10<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-10B<br>~~po~~<br>~~po~~<br>~~po~~|11.4|12.6|1|10.2|5|24.0|16.7|0.078|
|BZW04-11<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-11B<br>~~po~~<br>~~po~~<br>~~po~~|12.4|13.7|1|11.1|5|22.0|18.2|0.081|
|BZW04-13<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-13B<br>~~po~~<br>~~po~~<br>~~po~~|14.3|15.8|1|12.8|5|19.0|21.2|0.084|
|BZW04-14<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-14B<br>~~po~~<br>~~po~~<br>~~po~~|15.2|16.8|1|13.6|1|17.8|22.5|0.083|
|BZW04-15<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-15B<br>~~po~~<br>~~po~~<br>~~po~~|17.1|18.9|1|15.3|1|16.0|25.2|0.088|
|BZW04-17<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-17B<br>~~po~~<br>~~po~~<br>~~po~~|19.0|21.0|1|17.1|1|14.5|27.7|0.090|
|BZW04-19<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-19B<br>~~po~~<br>~~po~~<br>~~po~~|20.9|23.1|1|18.8|1|13.0|30.6|0.092|
|BZW04-20<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-20B<br>~~po~~<br>~~po~~<br>~~po~~|22.8|25.2|1|20.5|1|12.0|33.2|0.094|
|BZW04-23<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-23B<br>~~po~~<br>~~po~~<br>~~po~~|25.7|28.4|1|23.1|1|10.7|37.5|0.096|
|BZW04-26<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-26B<br>~~po~~<br>~~po~~<br>~~po~~|28.5|31.5|1|25.6|1|9.6|41.5|0.097|
|BZW04-28<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-28B<br>~~po~~<br>~~po~~<br>~~po~~|31.4|34.7|1|28.2|1|8.8|45.7|0.098|
|BZW04-31<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-31B<br>~~po~~<br>~~po~~<br>~~po~~|34.2|37.8|1|30.8|1|8.0|49.9|0.099|
|BZW04-33<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-33B<br>~~po~~<br>~~po~~<br>~~po~~|37.1|41.0|1|33.3|1|7.4|53.9|0.100|
|BZW04-37<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-37B<br>~~po~~<br>~~po~~<br>~~po~~|40.9|45.2|1|36.8|1|6.7|59.3|0.101|
|BZW04-40<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-40B<br>~~po~~<br>~~po~~<br>~~po~~|44.7|49.4|1|40.2|1|6.2|64.8|0.101|
|BZW04-44<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-44B<br>~~po~~<br>~~po~~<br>~~po~~|48.5|53.6|1|43.6|1|5.7|70.1|0.102|
|BZW04-48<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-48B<br>~~po~~<br>~~po~~<br>~~po~~|53.2|58.8|1|47.8|1|5.2|77.0|0.103|
|BZW04-53<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-53B<br>~~po~~<br>~~po~~<br>~~po~~|58.9|65.1|1|53.0|1|4.7|85.0|0.104|
|BZW04-58<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-58B<br>~~po~~<br>~~po~~<br>~~po~~|64.6|71.4|1|58.1|1|4.3|92.0|0.104|
|BZW04-64<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-64B<br>~~po~~<br>~~po~~<br>~~po~~|71.3|78.8|1|64.1|1|3.9|103|0.105|
|BZW04-70<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-70B<br>~~po~~<br>~~po~~<br>~~po~~|77.9|86.1|1|70.1|1|3.5|113|0.105|
|BZW04-78<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-78B<br>~~po~~<br>~~po~~<br>~~po~~|86.5|95.5|1|78.0|1|3.2|125|0.105|
|BZW04-85<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-85B<br>~~po~~<br>~~po~~<br>~~po~~|95|105|1|85.5|1|2.9|137|0.106|
|BZW04-94<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-94B<br>~~po~~<br>~~po~~<br>~~po~~|105|116|1|94.0|1|2.6|152|0.107|
|BZW04-102<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-102B<br>~~po~~<br>~~po~~<br>~~po~~|114|126|1|102|1|2.4|165|0.107|
|BZW04-110<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-110B<br>~~po~~<br>~~po~~<br>~~po~~|124|137|1|111|1|2.2|179|0.107|
|BZW04-128<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-128B<br>~~po~~<br>~~po~~<br>~~po~~|143|158|1|128|1|2.0|207|0.108|
|BZW04-136<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-136B<br>~~po~~<br>~~po~~<br>~~po~~|152|168|1|136|1|1.8|219|0.108|
|BZW04-145<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-145B<br>~~po~~<br>~~po~~<br>~~po~~|161|179|1|145|1|1.7|234|0.108|
|BZW04-154<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-154B<br>~~po~~<br>~~po~~<br>~~po~~|171|189|1|154|1|1.6|246|0.108|
|BZW04-171<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-171B<br>~~po~~<br>~~po~~<br>~~po~~|190|210|1|171|1|1.5|274|0.108|
|BZW04-188<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-188B<br>~~po~~<br>~~po~~<br>~~po~~|209|231|1|188|1|1.4|301|0.108|
|BZW04-213<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-213B<br>~~po~~<br>~~po~~<br>~~po~~|237|263|1|213|1|1.2|344|0.110|
|BZW04-239<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-239B<br>~~po~~<br>~~po~~<br>~~po~~|266|294|1|239|1|1.1|384|0.110|
|BZW04-256<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-256B<br>~~po~~<br>~~po~~<br>~~po~~|285|315|1|256|1|1.0|414|0.110|
|BZW04-273<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-273B<br>~~po~~<br>~~po~~<br>~~po~~|304|336|1|273|1|0.9|438|0.110|
|BZW04-299<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-299B<br>~~po~~<br>~~po~~<br>~~po~~|332|368|1|299|1|0.8|482|0.110|
|BZW04-342<br>~~po~~<br>~~po~~<br>~~po~~|BZW04-342B<br>~~po~~<br>~~po~~|380|420|1|342|1|0.75|548|0.110|
|BZW04-376<br>~~po~~<br>~~po~~|BZW04-376B<br>~~po~~|418|462|1|376|1|0.67|603|0.110|



1. Pulse test ： tp<50ms 

2. All terms and symbols are consistent with ANSI/IEEE C62.35 

3. For bipolar types having VWM of 10 volts and less, the ID limit is doubled. 

Document Number: DS_D1406028 

Version: I15 

**BZW04 SERIES** Taiwan Semiconductor 

~~a~~ **BZW04 SERIES** 

## PACKAGE OUTLINE DIMENSIONS 

**==> picture [372 x 124] intentionally omitted <==**

**----- Start of picture text -----**<br>
DO-204AL (DO-41)<br>Unit (mm) Unit (inch)<br>DIM.<br>Min Max Min Max<br>A 2.00 2.70 0.079 0.106<br>B 0.71 0.86 0.028 0.034<br>C 25.40 - 1.000 -<br>D 4.20 5.20 0.165 0.205<br>E 25.40 - 1.000 -<br>tale EE<br>|<br>**----- End of picture text -----**<br>


## MARKING DIAGRAM 

P/N = Specific Device Code G = Green Compound YWW = Date Code F = Factory Code 

Note: Cathode band for uni-directional products only 

Document Number: DS_D1406028 

Version: I15 

**BZW04 SERIES** Taiwan Semiconductor 

## Notice 

Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. 

Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC's terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. 

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 

Document Number: DS_D1406028 

Version: I15 



## Links

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- [Supplier page](https://es.farnell.com/en-ES/taiwan-semiconductor/bzw04-342-r0/tvs-diode-400w-342v-unidir-do/dp/2677547)
---

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