My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04-239B-E3/73
- Part No.:
- BZW04-239B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-239B-E3/73.pdf
- Description:
- TVS DIODE 239VWM 384VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,557
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04-239B-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 239 V standoff voltage (VWM), 266–294 V breakdown voltage (VBR) at 1 mA, 384 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits from ESD and inductive switching surges.
For engineers reviewing the BZW04-239B-E3/73 datasheet, BZW04-239B-E3/73 pinout, BZW04-239B-E3/73 application, or BZW04-239B-E3/73 equivalent, key selection criteria include its bidirectional polarity, 1.1 μA max reverse leakage at VWM, 384 V clamping voltage (VC), AEC-Q101 qualification status, and DO-41 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
This device operates as a voltage-clamping surge protector with symmetrical bidirectional conduction - no cathode marking, identical electrical behavior in both polarities. Its glass-passivated junction ensures stable VBR temperature coefficient (0.110 %/°C) and low incremental surge resistance, enabling consistent clamping under repetitive 10/1000 μs transients at ≤0.01% duty cycle.
Rated for -55 °C to +175 °C operating junction temperature and compliant with JESD22-B102 solderability standards, the BZW04-239B-E3/73 supports high-reliability applications where thermal derating above 25 °C must be applied per Fig. 2, and where lead-free (RoHS-compliant E3 suffix) and whisker-resistant (JESD201 Class 1A) terminations are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 239 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 240 VAC-derived rails or 200 VDC bus protection. |
| VBR (min/max) | 266 V / 294 V at 1 mA - verified breakdown range ensures predictable turn-on across production lots and temperature extremes. |
| VC @ IPPM | 384 V - clamping voltage during 384 A transient; limits downstream component stress to ≤384 V under worst-case surge. |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 1.1 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +175 °C - extended junction temperature rating supports operation in engine control units, motor drives, and enclosed industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC standard. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated, solderable per J-STD-002; no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional clamping behavior - either lead may connect to protected line or ground; no orientation dependency. |
| Lead 1 | Terminal | Standard axial lead; forms mechanical and thermal interface to PCB; 0.028–0.034 inch diameter per package drawing. |
| Lead 2 | Terminal | Second axial lead; electrically equivalent to Lead 1; enables through-hole mounting with 0.375 inch (9.5 mm) lead length standard. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in industrial environments. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events without parametric shift - critical for factory automation controllers exposed to frequent relay switching. |
| AEC-Q101 qualification | Validates reliability for automotive body electronics, infotainment power supplies, and ADAS sensor interfaces. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed systems - required for industrial PLC backplanes and telecom power modules. |
| JESD201 Class 1A whisker resistance | Eliminates tin whisker growth risk in high-reliability aerospace and medical equipment with >10-year service life. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers from flyback voltage spikes during IGBT/MOSFET switching in 3-phase inverters. IC Role / Device Role / Timing Role: Voltage clamping element placed across DC bus or gate drive lines to limit transient overvoltage to safe levels. Use Value: Prevents destructive latch-up or oxide breakdown in 600 V-class power semiconductors by clamping surges to ≤384 V. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins against load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected between LIN line and chassis ground. Use Value: Maintains communication integrity during 12 V system surges up to ±100 V by responding within <1 ns and limiting clamped voltage to 384 V. |
| Telecom Power Supply Inputs | Consumer Appliance Control Boards |
Use Scenario: Input-stage protection for AC-DC adapters and PoE injectors subjected to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Secondary-side TVS placed after bulk capacitor to clamp residual transients escaping primary-side MOVs. Use Value: Adds redundancy to surge protection architecture with 400 W capability - extends MTBF in outdoor telecom cabinets. |
Use Scenario: Overvoltage suppression on microcontroller reset lines and front-panel button inputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (1.1 μA) bidirectional clamp preventing false resets or ESD-induced firmware lockup. Use Value: Enables direct connection to unshielded user interfaces without additional RC filtering - reduces BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ230CA | DO-214AA package (SMB), 230 V VWM, 389 V VC, 400 W PPPM - same clamping performance but surface-mount format. | Requires PCB redesign for SMT placement; lacks axial lead mechanical robustness for high-vibration environments. | Select when board space is constrained and reflow assembly is preferred over through-hole wave soldering. |
| P6KE240CA | DO-15 package, 240 V VWM, 392 V VC, 600 W PPPM - higher power rating but larger footprint and lower surge current density. | Less suitable for compact designs; thermal mass delays response slightly versus BZW04 series' optimized junction design. | Choose only if legacy DO-15 footprint compatibility or higher single-pulse energy absorption (>400 W) is mandatory. |
Compared with SMBJ230CA and P6KE240CA, the BZW04-239B-E3/73 delivers identical 400 W surge capability in a smaller DO-41 outline, with superior thermal response due to lower junction-to-lead resistance and AEC-Q101 validation not offered by P6KE240CA - making it optimal for new automotive and space-constrained industrial designs requiring proven reliability.
Availability
BZW04-239B-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supply inputs, and consumer appliance control boards requiring stable component supply with full traceability and lifecycle management.
Supply support for BZW04-239B-E3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics with emphasis on automotive, industrial, and computing applications.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in harsh environments - targeting applications demanding AEC-Q101 compliance, UL 94 V-0 safety, and stable clamping over wide temperature ranges.
FAQ
What is the clamping voltage of BZW04-239B-E3/73 under maximum rated surge current?
The BZW04-239B-E3/73 has a maximum clamping voltage (VC) of 384 V when subjected to its rated peak pulse current (IPPM) of 384 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry will not experience voltages exceeding 384 V during standardized surge events - a critical parameter for protecting 400 V-rated capacitors and gate drivers. The BZW04-239B-E3/73 maintains this clamping performance across its full operating temperature range.
Is BZW04-239B-E3/73 suitable for automotive applications?
Yes, the BZW04-239B-E3/73 is AEC-Q101 qualified, confirming its suitability for automotive applications including body control modules, lighting drivers, and sensor interfaces. Its DO-41 package provides mechanical robustness for vibration-prone environments, and its -55 °C to +175 °C operating range covers under-hood and cabin temperature extremes. The BZW04-239B-E3/73 also meets JESD201 Class 1A whisker resistance requirements - essential for long-life automotive electronics.
How does the bidirectional nature of BZW04-239B-E3/73 affect PCB layout?
The BZW04-239B-E3/73 has no polarity marking and exhibits identical electrical characteristics in both directions, eliminating orientation constraints during placement. This simplifies PCB layout by allowing either lead to connect to the protected line or ground reference - ideal for differential signal lines or AC-coupled circuits. Unlike unidirectional TVS diodes, the BZW04-239B-E3/73 avoids risk of incorrect installation, reducing assembly errors in high-volume manufacturing.
What is the maximum reverse leakage current for BZW04-239B-E3/73 at its standoff voltage?
The BZW04-239B-E3/73 specifies a maximum reverse leakage current (ID) of 1.1 μA at its 239 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes power loss in always-on circuits. Leakage remains below 5 μA across the full -55 °C to +125 °C operating range, ensuring reliable performance in battery-powered and energy-sensitive applications using the BZW04-239B-E3/73.
Does BZW04-239B-E3/73 require heatsinking for continuous power dissipation?
No, the BZW04-239B-E3/73 is rated for 1.5 W steady-state power dissipation (PD) on an infinite heatsink at TL = 75 °C, but it is intended for transient suppression - not continuous conduction. Under normal operation, it draws negligible current (<1.1 μA) and generates no measurable heat. Heatsinking is unnecessary unless subjected to abnormally high repetition-rate surges beyond the specified 0.01% duty cycle; the BZW04-239B-E3/73 relies on thermal mass of PCB copper for short-duration pulse energy absorption.
BZW04-239B-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 239V
- Voltage - Breakdown (Min):
- 266V
- Voltage - Clamping (Max) @ Ipp:
- 384V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-239B-E3/73 FAQ
1.How can I place an order for BZW04-239B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-239B-E3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW04-239B-E3/73 reliable?
The price and inventory of BZW04-239B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-239B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04-239B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-239B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-239B-E3/73?
BZW04-239B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-239B-E3/73 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW04-239B-E3/73?
For technical support, including BZW04-239B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-239B-E3/73 requirements.
6.How does Aetrix verify that BZW04-239B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04-239B-E3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW04-239B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04-239B-E3/73?
All BZW04-239B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-239B-E3/73, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW04-239B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04-239B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-239B-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
