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Vishay General Semiconductor - Diodes Division BZW04P9V4-E3/73
- Part No.:
- BZW04P9V4-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P9V4-E3/73.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,118
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Product details
Overview
BZW04P9V4-E3/73 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) capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection circuits.
For engineers reviewing the BZW04P9V4-E3/73 datasheet, BZW04P9V4-E3/73 pinout, BZW04P9V4-E3/73 application, or BZW04P9V4-E3/73 equivalent, key selection criteria include its DO-204AL (DO-41) axial package, AEC-Q101 qualification, bi-directional symmetry, low 0.075 %/°C VBR temperature coefficient, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients without polarity marking. Its glass-passivated junction ensures stable breakdown behavior, while the 10/1000 μs waveform rating reflects real-world lightning and inductive-switching surge conditions.
The device sustains 400 W peak pulse power at TA = 25 °C with derating above 25 °C per Figure 2, and exhibits low incremental surge resistance to minimize voltage overshoot during fast-rising ESD or EFT events. Junction temperature range spans –55 °C to +175 °C, supporting under-hood and industrial ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.4 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 10.5–12.1 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 15.6 V at IPPM = 25.7 A - Peak voltage seen by protected circuit during full-rated surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Sustained energy-handling capacity for repetitive surge events at 0.01 % duty cycle. |
| ID (Reverse Leakage) | 5.0 μA max at VWM - Minimal quiescent current draw, preserving signal integrity and low-power system efficiency. |
| TJ Range | –55 °C to +175 °C - Enables deployment in automotive engine compartments and industrial control enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - bi-directional functionality confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Either end serves as cathode or anode depending on transient polarity; no color band or marking required. |
| Lead 1 | Terminal connection to P-N junction | Standard axial lead; solderable per JESD 22-B106 (275 °C, 10 s max). |
| Lead 2 | Terminal connection to P-N junction | Electrically identical to Lead 1; interchangeable in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV line-to-earth) surge protection without derating in standard layouts. |
| AEC-Q101 qualification | Validates suitability for automotive body electronics, infotainment, and ADAS sensor interfaces. |
| Low temperature coefficient (0.075 %/°C) | Maintains predictable clamping performance across –40 °C to +125 °C operating range. |
| RoHS-compliant, matte tin plating | Enables lead-free reflow assembly and meets global environmental compliance mandates. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and ground, responding within <1 ns to transients exceeding VWM. Use Value: Limits induced surge voltage to ≤15.6 V, preventing damage to 5 V or 3.3 V interface ICs while maintaining signal fidelity during normal operation. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers against EFT bursts and AC line coupling in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC I/O terminals, absorbing repetitive 400 W surges without degradation. Use Value: Extends field-replacement interval by eliminating false triggering and latch-up in microcontroller GPIOs subjected to 5 kHz EFT noise. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Secondary protection stage downstream of gas discharge tube (GDT), clamping residual transients after primary diversion. Use Value: Achieves sub-16 V clamping at 25.7 A, compatible with IEEE 802.3af PoE voltage margins and PHY absolute maximum ratings. |
Use Scenario: Guarding microcontroller reset lines and button inputs in washing machines and HVAC controllers against ESD from user interaction. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bi-directional clamp on 3.3 V logic rails, rated for >30 kV HBM ESD. Use Value: Prevents firmware lockup and unintended resets during 8 kV contact discharge events per IEC 61000-4-2. |
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 at 28.6 A; DO-214AA package | Requires polarity-aware placement; unsuitable for AC-coupled or floating differential lines | Select when unidirectional protection suffices and board space allows SMB footprint. |
| P6KE9.1A | Uni-directional; 9.1 V VWM; 14.4 V VC at 27.8 A; DO-15 package; lower PPPM (600 W but 1.5× larger surge duration) | Larger package; higher leakage (50 μA); not AEC-Q101 qualified | Consider only for cost-sensitive commercial-grade designs lacking automotive qualification needs. |
Compared with BZW04P9V4-E3/73, SMBJ9.0A offers tighter VWM tolerance but lacks bi-directional symmetry and AEC-Q101 validation, while P6KE9.1A trades qualification and leakage performance for legacy compatibility - making BZW04P9V4-E3/73 the optimal choice for new automotive and industrial designs requiring robust, polarity-agnostic surge immunity.
Availability
BZW04P9V4-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for BZW04P9V4-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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments where AEC-Q101 compliance, low clamping voltage, and bi-directional symmetry are mandatory.
FAQ
What is the clamping voltage of BZW04P9V4-E3/73 under full-rated surge conditions?
The BZW04P9V4-E3/73 clamps to a maximum of 15.6 V when subjected to its rated 25.7 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces. The BZW04P9V4-E3/73 maintains this clamping performance across its full operating temperature range.
Is BZW04P9V4-E3/73 suitable for automotive applications?
Yes, BZW04P9V4-E3/73 is AEC-Q101 qualified, having passed rigorous stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling. Its –55 °C to +175 °C junction temperature range, bi-directional symmetry, and DO-204AL mechanical robustness make it appropriate for under-hood sensors, body control modules, and infotainment interfaces. The BZW04P9V4-E3/73 meets automotive EMC requirements for ISO 7637-2 and IEC 61000-4-5.
How does the bi-directional design of BZW04P9V4-E3/73 affect PCB layout?
The BZW04P9V4-E3/73 has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating risk of reverse installation. Engineers can place it across any differential or AC-coupled line - such as RS-485, CAN, or audio paths - without regard to anode/cathode direction. This symmetry also reduces BOM complexity versus using two uni-directional devices. The BZW04P9V4-E3/73's DO-204AL axial package supports through-hole mounting with standard lead spacing.
What is the maximum reverse leakage current for BZW04P9V4-E3/73 at its stand-off voltage?
The BZW04P9V4-E3/73 specifies a maximum reverse leakage current (ID) of 5.0 μA at its 9.4 V stand-off voltage (VWM) and TA = 25 °C. This low leakage preserves signal integrity in high-impedance sensor paths and minimizes standby power loss in battery-operated systems. Leakage remains below 20 μA up to +125 °C ambient, as confirmed by Vishay's derating curves - a key advantage over alternatives with higher ID drift. The BZW04P9V4-E3/73 achieves this while maintaining 400 W surge capability.
Does BZW04P9V4-E3/73 require heatsinking for continuous power dissipation?
No, the BZW04P9V4-E3/73 is rated for 1.5 W steady-state power dissipation (PD) on an infinite heatsink at TL = 75 °C, but its primary function is transient suppression - not continuous conduction. Under normal operation, it draws negligible current (<5 μA). Heatsinking is unnecessary unless exposed to frequent high-duty-cycle surges exceeding 0.01 %, which would violate its specified repetitive rate. The BZW04P9V4-E3/73 relies on thermal mass of PCB copper and lead frame to absorb single-event energy, not sustained thermal loading.
BZW04P9V4-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P9V4-E3/73 FAQ
1.How can I place an order for BZW04P9V4-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P9V4-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 BZW04P9V4-E3/73 reliable?
The price and inventory of BZW04P9V4-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 BZW04P9V4-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P9V4-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P9V4-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P9V4-E3/73?
BZW04P9V4-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P9V4-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 BZW04P9V4-E3/73?
For technical support, including BZW04P9V4-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P9V4-E3/73 requirements.
6.How does Aetrix verify that BZW04P9V4-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P9V4-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 BZW04P9V4-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P9V4-E3/73?
All BZW04P9V4-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P9V4-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 BZW04P9V4-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P9V4-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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