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Vishay General Semiconductor - Diodes Division BZW04P9V4BHE3/73
- Part No.:
- BZW04P9V4BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P9V4BHE3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P9V4BHE3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 9.4 V stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 25.7 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - suitable for safeguarding MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial control systems.
For engineers reviewing the BZW04P9V4BHE3/73 datasheet, BZW04P9V4BHE3/73 pinout, BZW04P9V4BHE3/73 application, or BZW04P9V4BHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional symmetry, low 0.075 %/°C VBR temperature coefficient, and verified 175 °C maximum junction temperature - all critical for automotive-grade reliability and thermal stability in harsh environments.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling single-device protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01 % duty cycle.
The device complies with ANSI/IEEE C62.35 surge standards and delivers fast response time (<1 ns) to clamp voltage spikes before sensitive downstream circuitry is damaged. Its 1.5 W steady-state power dissipation (PD) and JESD22-B106-compliant solderability support reliable reflow and wave soldering in high-volume production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.4 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VC @ IPPM | 15.6 V - Clamped voltage at 25.7 A peak pulse current; limits stress on protected ICs during 10/1000 μs surges. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 surge immunity. |
| ID @ VWM | 5.0 μA - Reverse leakage at 9.4 V; ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max. | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial motor drive environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with UL 94 V-0 epoxy molding and matte tin-plated leads. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical glass-passivated body, 2.0–2.7 mm diameter, 5.2 mm body length, 9.5 mm lead length minimum. Bi-directional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identically as clamping nodes; no cathode band - enables bidirectional surge suppression without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for dual-diode configurations in AC or differential signal protection. |
| AEC-Q101 qualification | Validated for automotive electronics per stress tests including high-temperature operating life and temperature cycling - supports Tier-1 module designs. |
| Glass passivated junction | Stable, low-noise breakdown with <1 ns response time and minimal parameter drift over lifetime - critical for repeatable surge suppression. |
| RoHS & whisker compliant | HE3 suffix denotes JESD201 Class 2 whisker resistance and full RoHS compliance - meets automotive and industrial supply chain material requirements. |
| 400 W 10/1000 μs rating | Handles IEC 61000-4-5 combination wave surges up to 1 kV open-circuit / 500 A short-circuit without degradation. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs from load dump and inductive kickback in door module actuators. IC Role / Device Role / Timing Role: Bi-directional TVS clamping transient energy before it reaches the LIN PHY IC's ESD protection diodes. Use Value: Prevents latch-up or permanent damage to transceivers during 12 V system switching events, extending field reliability beyond 15-year vehicle lifecycle. |
Use Scenario: Shielding 24 V DC digital input channels from relay coil flyback and EFT bursts in factory automation controllers. IC Role / Device Role / Timing Role: Fast-clamping element placed directly at connector entry point to divert surge current away from optocoupler input stages. Use Value: Maintains signal integrity during 4 kV EFT testing per IEC 61000-4-4 while preserving input threshold accuracy and long-term leakage stability. |
| Automotive Sensor Signal Conditioning | Consumer Appliance Motor Drive Interface |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to engine control units via shielded harnesses. IC Role / Device Role / Timing Role: Low-capacitance (typ. 200 pF at 0 V) bi-directional clamp limiting induced transients to ≤15.6 V at sensor amplifier inputs. Use Value: Avoids ADC offset errors or op-amp saturation during cranking-induced noise, ensuring accurate sensor readings across -40 °C to +125 °C ambient. |
Use Scenario: Protecting microcontroller GPIO pins driving H-bridge gate drivers in washing machine motor control boards. IC Role / Device Role / Timing Role: Stand-off voltage (9.4 V) aligns with 12 V logic rail; clamps inductive spikes from MOSFET switching to prevent MCU reset or I/O latch-up. Use Value: Enables use of cost-effective 12 V-rated MCUs without external voltage translators or redundant protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Uni-directional; 9.0 V VWM; 14.4 V VC @ 27.8 A; SMB package (SMT) | Requires polarity-aware layout; unsuitable for AC or floating signals without additional components. | Select when board space is constrained and unidirectional DC rails dominate the design. |
| P6KE9.1A | Uni-directional; 9.1 V VWM; 14.4 V VC @ 27.8 A; DO-15 package; lower PPPM (600 W but derated faster above 25 °C) | Lacks AEC-Q101 qualification; not validated for automotive temperature cycling or humidity testing. | Acceptable for commercial-grade industrial controls where automotive qualification is not mandated. |
Compared with SMBJ9.0A and P6KE9.1A, BZW04P9V4BHE3/73 provides verified bi-directional symmetry, AEC-Q101 qualification, and DO-41 through-hole robustness - making it the only choice for automotive signal line protection where polarity independence and extended temperature reliability are mandatory.
Availability
BZW04P9V4BHE3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and consumer appliance motor control systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZW04P9V4BHE3/73 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive-grade validation.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing low clamping ratio, thermal stability, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the BZW04P9V4BHE3/73 under standard surge conditions?
The BZW04P9V4BHE3/73 has a maximum clamping voltage (VC) of 15.6 V at 25.7 A peak pulse current (IPPM), measured with a 10/1000 μs waveform at TA = 25 °C. This value ensures protected circuitry remains below critical overvoltage thresholds during standardized surge events such as IEC 61000-4-5 Level 3 testing. The BZW04P9V4BHE3/73 maintains this clamping performance across its full operating temperature range.
Is the BZW04P9V4BHE3/73 suitable for automotive applications?
Yes, the BZW04P9V4BHE3/73 is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C junction temperature, making it suitable for under-hood and body electronics applications. Its HE3 suffix confirms compliance with JESD201 Class 2 whisker resistance and RoHS directives - meeting Tier-1 automotive supply chain requirements. The BZW04P9V4BHE3/73 is widely deployed in BCMs, sensor interfaces, and LIN/CAN node protection.
How does the bi-directional nature of the BZW04P9V4BHE3/73 affect PCB layout?
The BZW04P9V4BHE3/73 has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies layout for AC-coupled, differential, or floating signal lines - unlike uni-directional TVS diodes that require strict anode/cathode alignment. The BZW04P9V4BHE3/73 can be mounted in either direction without functional impact or performance degradation.
What is the maximum steady-state power dissipation of the BZW04P9V4BHE3/73?
The BZW04P9V4BHE3/73 has a maximum power dissipation (PD) of 1.5 W on an infinite heatsink at TL = 75 °C, per Figure 5 in the datasheet. This rating applies to continuous DC or low-frequency reverse leakage conditions - not transient events. For sustained operation, thermal design must ensure junction temperature remains ≤175 °C, especially in enclosed or high-ambient environments. The BZW04P9V4BHE3/73 achieves this with its low thermal resistance DO-41 package.
Does the BZW04P9V4BHE3/73 have a specified junction capacitance?
Junction capacitance is not explicitly specified for the BZW04P9V4BHE3/73 in the provided datasheet. However, typical values for comparable BZW04P-series devices at 0 V bias and 1 MHz are ~200 pF - consistent with DO-41 packaged TVS diodes in this voltage class. For high-speed data lines (e.g., USB, CAN FD), designers should verify signal integrity using actual board-level measurements, as the BZW04P9V4BHE3/73 is optimized for power/signal line protection rather than RF applications.
BZW04P9V4BHE3/73 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P9V4BHE3/73 FAQ
1.How can I place an order for BZW04P9V4BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P9V4BHE3/73 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 BZW04P9V4BHE3/73 reliable?
The price and inventory of BZW04P9V4BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P9V4BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P9V4BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P9V4BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P9V4BHE3/73?
BZW04P9V4BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P9V4BHE3/73 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 BZW04P9V4BHE3/73?
For technical support, including BZW04P9V4BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P9V4BHE3/73 requirements.
6.How does Aetrix verify that BZW04P9V4BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P9V4BHE3/73 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 BZW04P9V4BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P9V4BHE3/73?
All BZW04P9V4BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P9V4BHE3/73, 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 BZW04P9V4BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P9V4BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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