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Vishay General Semiconductor - Diodes Division BZW04-28HE3/54
- Part No.:
- BZW04-28HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-28HE3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04-28HE3/54 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 28.2 V standoff voltage (VWM), 31.4–34.7 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤45.7 V at 8.8 A peak pulse current (10/1000 μs waveform), delivering 400 W peak pulse power for surge protection in automotive and industrial interfaces.
For engineers reviewing the BZW04-28HE3/54 datasheet, BZW04-28HE3/54 pinout, BZW04-28HE3/54 application, or BZW04-28HE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping performance, DO-41 mechanical compatibility, low leakage (<1 μA at VWM), and stable temperature coefficient (0.098 %/°C) - critical for robust overvoltage design in sensor signal conditioning, power supply input stages, and CAN/LIN bus protection.
Technical Context
This device operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the 10/1000 μs waveform rating reflects standardized lightning/surge immunity testing per IEC 61000-4-5.
The BZW04-28HE3/54 is rated for continuous power dissipation 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 0.098 %/°C VBR temperature coefficient ensures predictable voltage drift across automotive thermal ranges, and its 1.0 μA maximum reverse leakage at 28.2 V supports low-power system standby integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR min/max | 31.4 V / 34.7 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering within specification under production tolerance. |
| VC @ IPPM | ≤45.7 V at 8.8 A - Clamped voltage during 10/1000 μs transient; determines maximum stress imposed on downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling capability; validates compliance with IEC 61000-4-5 Level 4 surge requirements. |
| ID @ VWM | ≤1.0 μA - Reverse leakage current at standoff voltage; guarantees minimal quiescent power loss in battery-powered systems. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| Temp. coeff. | 0.098 %/°C - Voltage drift rate of VBR with temperature; allows accurate clamping prediction across –40 °C to +125 °C ambient. |
Pinout & Package
Package: DO-41 (DO-204AL) - axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD22-B102 solderability standards; UL 94 V-0 rated molding compound; 0.350 g unit weight; compatible with 13" paper tape and reel (package code 54).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connects to lower-potential side of protected line; forms symmetrical clamping path with cathode in bidirectional operation. |
| Cathode | Current entry point in reverse bias | Connects to higher-potential side; together with anode, enables identical clamping in both directions for AC or floating signals. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress. |
| AEC-Q101 qualification | Validates suitability for automotive electronics including engine control units, body modules, and ADAS sensor interfaces. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive end equipment. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive ICs like microcontrollers and transceivers. |
| DO-41 mechanical compatibility | Enables drop-in replacement in legacy designs using standard through-hole PCB footprints and assembly processes. |
Applications
| Automotive Sensor Signal Protection | Industrial Power Supply Input Stage |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors connected to ECU inputs against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and ECU input pin, shunting surge energy to ground or rail. Use Value: Maintains signal integrity by limiting transient voltage to ≤45.7 V, preventing latch-up or damage to 5 V or 3.3 V ADC front-ends in AEC-Q100 Grade 2 systems. | Use Scenario: Safeguarding DC-DC converter inputs in programmable logic controllers (PLCs) exposed to 24 V DC field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on unregulated 24 V input rail, positioned upstream of input filter capacitors and converter ICs. Use Value: Absorbs 400 W surges without degradation, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards for industrial equipment. |
| Consumer Device USB Port ESD Clamp | Telecom Line Interface Protection |
Use Scenario: Secondary-level transient suppression on USB 2.0 D+/D– lines in set-top boxes or smart displays subjected to contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp parallel to data lines, complementing integrated USB transceiver ESD structures. Use Value: Sub-1 ns response time and ≤45.7 V clamping prevent data corruption and port controller damage during ±8 kV contact discharge events. | Use Scenario: Protecting RS-485 transceiver inputs in building automation gateways connected to long-distance twisted-pair cabling. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair placed at physical layer interface to suppress induced lightning surges and ground potential differences. Use Value: Symmetrical 28.2 V standoff and bidirectional clamping ensure balanced protection on differential pairs without DC bias disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | DO-214AA (SMB) surface-mount package; same 28 V VWM and 400 W PPPM rating but higher VC (45.4 V) and lower IPPM (8.85 A). | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics vs. through-hole industrial modules. | Select SMBJ28CA only when board real estate is limited and reflow assembly is available; BZW04-28HE3/54 remains optimal for through-hole legacy or high-reliability automotive harness interfaces. |
| P6KE27CA | Higher VWM (27 V) and lower VBR (30.0–33.0 V); same DO-41 package but lower PPPM (600 W) and higher VC (43.0 V) at 13.9 A. | Less precise voltage matching to 28 V systems; suitable for general-purpose 24 V rail protection where tighter clamping is not required. | Choose P6KE27CA for cost-sensitive non-automotive applications where AEC-Q101 qualification is unnecessary and 27 V standoff is acceptable. |
Compared with SMBJ28CA and P6KE27CA, the BZW04-28HE3/54 provides AEC-Q101 qualification, tighter VBR tolerance (31.4–34.7 V), and DO-41 mechanical robustness ideal for vibration-prone automotive and industrial environments - making it the preferred choice when reliability under thermal cycling and mechanical stress is critical.
Availability
BZW04-28HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power inputs, and telecom RS-485 line protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZW04-28HE3/54 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 passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04 series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecommunications infrastructure where AEC-Q101 compliance and 175 °C junction operation are mandatory.
FAQ
What is the polarity configuration of BZW04-28HE3/54?
The BZW04-28HE3/54 is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants, it has no polarity marking on the DO-41 package and is intended for AC-coupled or floating signal lines where voltage transients may occur with either polarity. This configuration eliminates orientation concerns during manual or automated assembly.
Is BZW04-28HE3/54 qualified for automotive applications?
Yes, the BZW04-28HE3/54 carries the HE3 suffix, indicating full AEC-Q101 qualification. It is tested and certified for use in automotive electronics including engine control units, body control modules, and ADAS sensor interfaces. Its –55 °C to +175 °C operating junction temperature range and robust surge endurance meet stringent automotive reliability requirements.
What is the clamping voltage of BZW04-28HE3/54 under surge conditions?
The BZW04-28HE3/54 clamps to a maximum of 45.7 V when subjected to an 8.8 A peak pulse current with a 10/1000 μs waveform. This value is measured at the specified IPPM and defines the upper voltage limit imposed on protected circuitry during standardized surge events, ensuring downstream components such as microcontrollers or transceivers remain within safe operating limits.
How does the temperature coefficient affect BZW04-28HE3/54 performance?
The BZW04-28HE3/54 has a VBR temperature coefficient of +0.098 %/°C, meaning its breakdown voltage increases predictably with rising junction temperature. At +125 °C ambient (with self-heating), VBR shifts approximately +1.2 V above its 25 °C value - a known and bounded drift that allows designers to maintain adequate margin between VWM and actual VBR across full operating range.
Can BZW04-28HE3/54 replace older P6KE series devices?
The BZW04-28HE3/54 can serve as a functional upgrade to P6KE27CA or P6KE28CA in many through-hole applications, offering tighter VBR tolerance, lower leakage (<1 μA), and AEC-Q101 qualification. However, direct substitution requires verification of VWM match (28.2 V vs. 27 V or 28 V), PCB footprint compatibility, and thermal derating - especially in high-duty-cycle surge environments where its 1.5 W PD rating must be respected.
BZW04-28HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- 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)
BZW04-28HE3/54 FAQ
1.How can I place an order for BZW04-28HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-28HE3/54 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 BZW04-28HE3/54 reliable?
The price and inventory of BZW04-28HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-28HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-28HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-28HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-28HE3/54?
BZW04-28HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-28HE3/54 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 BZW04-28HE3/54?
For technical support, including BZW04-28HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-28HE3/54 requirements.
6.How does Aetrix verify that BZW04-28HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-28HE3/54 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 BZW04-28HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-28HE3/54?
All BZW04-28HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-28HE3/54, 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 BZW04-28HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-28HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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