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Vishay General Semiconductor - Diodes Division BZW04P9V4HE3/73
- Part No.:
- BZW04P9V4HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P9V4HE3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,225
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Product details
Overview
BZW04P9V4HE3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, designed for clamping ESD and surge transients on signal/power lines. It features 9.4 V stand-off voltage (VWM), 15.6 V maximum clamping voltage (VC) at 25.7 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFET gates, sensor interfaces, and automotive control modules.
For engineers reviewing the BZW04P9V4HE3/73 datasheet, BZW04P9V4HE3/73 pinout, BZW04P9V4HE3/73 application, or BZW04P9V4HE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, bi-directional symmetry, low clamping ratio (VC/VWM = 1.66), and compatibility with 8.3 ms surge waveforms in automotive and industrial environments.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified at 10.5–12.1 V (min/max) under 1 mA test current. Its junction capacitance is not specified in the source document, but its fast response time and low incremental surge resistance enable effective suppression of sub-microsecond transients induced by inductive switching or ESD events.
The device is rated for continuous power dissipation (PD) of 1.5 W on an infinite heatsink at 75 °C lead temperature and supports operating junction temperatures from –55 °C to +175 °C. Its 10/1000 µs waveform rating reflects standardized IEC 61000-4-5 surge immunity testing conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.4 V - maximum steady-state reverse voltage before clamping begins; defines safe operating margin below circuit supply rails. |
| VBR (min/max) | 10.5 V / 12.1 V at 1 mA - ensures reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 15.6 V at 25.7 A - clamping voltage limits downstream component stress during 400 W transient surges. |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform, enabling robust protection against lightning-induced surges. |
| ID @ VWM | 5.0 µA - ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | +175 °C - supports under-hood automotive applications and high-temperature industrial environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetrical terminals conduct equally in either direction during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 µs) | Withstands repetitive surge events in automotive load-dump and ISO 7637-2 pulse 5a/b environments. |
| AEC-Q101 qualified | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor interfaces. |
| Bi-directional operation | Protects AC-coupled or floating signal lines (e.g., CAN, LIN, sensor bridges) without polarity constraints. |
| Low clamping ratio (VC/VWM = 1.66) | Minimizes voltage overshoot during clamping, reducing risk of damage to downstream 12 V logic or analog ICs. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bi-directional voltage clamp absorbing negative-going spikes and positive load-dump surges. Use Value: Maintains sensor signal fidelity by limiting transient excursions to ≤15.6 V while surviving >1000 surge cycles per AEC-Q101. |
Use Scenario: Shielding 24 V digital input channels on programmable logic controllers from relay coil flyback and ESD. IC Role / Device Role / Timing Role: Fast-response shunt protector diverting surge energy away from optocoupler inputs and microcontroller GPIOs. Use Value: Prevents false triggering and latch-up by clamping transients within 1 ns, with <5 µA leakage preserving input threshold accuracy. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding USB-C PD negotiation lines and CC pins against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Bi-directional ESD clamp placed directly at connector, before level-shifting or USB controller ICs. Use Value: Achieves IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) protection without adding series impedance to high-speed data paths. |
Use Scenario: Front-end protection of Ethernet PHY differential pairs and POTS line interfaces exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter in multi-stage protection architecture, preceding GDTs and secondary TVS arrays. Use Value: Handles 400 W surges per IEC 61000-4-5 Combination Wave (1.2/50 µs voltage, 8/20 µs current) without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | DO-214AA package; 9.0 V VWM; 14.4 V VC @ 27.8 A; same 400 W PPPM rating. | Surface-mount footprint requires PCB redesign; higher thermal resistance than axial DO-41 in free-air conditions. | Preferred for space-constrained SMT designs where reflow compatibility and board density outweigh leaded assembly benefits. |
| P6KE9.1A | DO-15 package; 9.1 V VWM; 14.2 V VC @ 28.2 A; 600 W PPPM (10/1000 µs); unidirectional only. | Lacks bi-directional symmetry; requires external polarity management for AC-coupled lines. | Selected when higher single-pulse energy handling is needed and circuit topology permits unidirectional placement. |
Compared with SMBJ9.0CA and P6KE9.1A, BZW04P9V4HE3/73 offers AEC-Q101 qualification in a through-hole DO-41 package with verified bi-directional performance - making it optimal for automotive and industrial field-replaceable modules where mechanical robustness and polarity-agnostic protection are mandatory.
Availability
BZW04P9V4HE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card surge protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZW04P9V4HE3/73 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04P9V4HE3/73 belongs to the TransZorb® family of TVS diodes engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What is the clamping voltage of BZW04P9V4HE3/73 under maximum surge conditions?
The BZW04P9V4HE3/73 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. This value represents the upper voltage limit imposed on protected circuitry during a full-rated 400 W transient event, ensuring downstream components like microcontrollers or analog front-ends remain within safe operating margins.
Is BZW04P9V4HE3/73 suitable for automotive applications?
Yes, BZW04P9V4HE3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its –55 °C to +175 °C operating junction temperature range, DO-204AL mechanical robustness, and validation against temperature cycling, HTRB, and ESD testing make it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
How does the bi-directional nature of BZW04P9V4HE3/73 affect its use in circuit design?
The bi-directional configuration of BZW04P9V4HE3/73 means it conducts identically in both polarities, eliminating the need for polarity-aware layout or orientation during assembly. This simplifies protection of AC-coupled signals (e.g., CAN bus, bridge sensors) and floating lines, where voltage transients may swing positive or negative relative to ground - unlike unidirectional TVS diodes that require correct cathode/anode placement.
What is the meaning of the "HE3" suffix in BZW04P9V4HE3/73?
The "HE3" suffix in BZW04P9V4HE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial "E3" versions and confirms compliance with stringent automotive reliability standards, including extended temperature operation and mechanical durability requirements.
Can BZW04P9V4HE3/73 be used in place of a unidirectional TVS diode?
BZW04P9V4HE3/73 can replace a unidirectional TVS diode only if the circuit topology allows symmetrical clamping and no DC bias polarity dependency exists. Since it lacks a defined anode/cathode marking and conducts bidirectionally, it must not be substituted in circuits relying on forward conduction (e.g., DC power rail clamping with polarity-sensitive regulation), where unidirectional behavior is functionally required.
BZW04P9V4HE3/73 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:
- 1
- Bidirectional Channels:
- -
- 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)
BZW04P9V4HE3/73 FAQ
1.How can I place an order for BZW04P9V4HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P9V4HE3/73 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 BZW04P9V4HE3/73 reliable?
The price and inventory of BZW04P9V4HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P9V4HE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P9V4HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P9V4HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P9V4HE3/73?
BZW04P9V4HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P9V4HE3/73 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 BZW04P9V4HE3/73?
For technical support, including BZW04P9V4HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P9V4HE3/73 requirements.
6.How does Aetrix verify that BZW04P9V4HE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P9V4HE3/73 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 BZW04P9V4HE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P9V4HE3/73?
All BZW04P9V4HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P9V4HE3/73, 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 BZW04P9V4HE3/73 part is unused and in its original packaging.
Return procedure for BZW04P9V4HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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