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Vishay General Semiconductor - Diodes Division BZW04P28B-E3/54
- Part No.:
- BZW04P28B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P28B-E3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,206
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Product details
Overview
BZW04P28B-E3/54 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 28.2 V stand-off voltage (VWM), 31.4–36.3 V breakdown voltage (VBR) at 1 mA, 45.7 V clamping voltage (VC) at 8.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04P28B-E3/54 datasheet, BZW04P28B-E3/54 pinout, BZW04P28B-E3/54 application, or BZW04P28B-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 package details, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternatives for circuit-level ESD/transient hardening.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and low incremental surge resistance, critical for fast clamping response during sub-microsecond transients.
The device complies with AEC-Q101 for automotive-grade reliability and sustains repetitive 10/1000 µs surges at 0.01% duty cycle. Thermal derating follows JEDEC JESD22-A104 up to TJ = 175 °C, with power dissipation limited to 1.5 W on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 24 V nominal systems. |
| VBR (min/max) | 31.4 V / 36.3 V at 1 mA - guaranteed breakdown threshold range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 45.7 V at 8.8 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress to <46 V under worst-case 400 W transient. |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| IPPM | 8.8 A - peak pulse current capability; enables protection of 24 V bus lines against induced lightning or inductive switching spikes. |
| TJ max | 175 °C - maximum junction temperature; allows operation in under-hood automotive environments and sealed industrial enclosures. |
| Leakage (ID) | <1 µA at 28.2 V - ultra-low reverse leakage preserves signal integrity and battery life in always-on monitoring circuits. |
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. No polarity marking - bi-directional symmetry confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Either end serves as input/output terminal; no cathode band - enables placement flexibility in PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces per stress test requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for 15+ year field life. |
| 400 W 10/1000 µs rating | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment and telecom infrastructure without external heat sinking. |
| RoHS-compliant & whisker-tested | E3 suffix confirms compliance with Directive 2011/65/EU and JESD201 Class 1A tin whisker resistance - suitable for high-reliability assemblies. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standby-mode voltage clamp placed directly at connector entry point to shunt transients before reaching ASIC or MCU pins. Use Value: Limits clamped voltage to 45.7 V during 8.8 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Primary surge suppression element mounted adjacent to terminal block, absorbing energy before optocoupler or Schmitt trigger input stage. Use Value: Withstands repetitive 400 W surges at 0.01% duty cycle, enabling reliable operation in factory automation environments with frequent switching events. |
| Telecom Line Interface | Consumer Appliance Power Monitoring |
|
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from induced surges on long cable runs in building management systems. IC Role / Device Role / Timing Role: Bi-directional clamping device placed across differential pair (A/B) and shield ground to suppress common-mode transients. Use Value: Symmetric VBR and VC ensure equal clamping in both directions - essential for preserving signal integrity on balanced communication links. |
Use Scenario: Guarding microcontroller ADC inputs measuring mains voltage via resistive divider in smart home appliances. IC Role / Device Role / Timing Role: Secondary protection layer after MOV, limiting residual voltage to ≤45.7 V during fast-rising surges that bypass bulk suppression. Use Value: Ultra-low leakage (<1 µA) avoids measurement offset drift in high-impedance voltage sensing networks. |
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 | Same DO-214AA package; 28 V VWM, 45.4 V VC @ 8.8 A - nearly identical clamping but lower PPPM (600 W vs. 400 W rated). | Higher peak power margin suits higher-energy surge environments (e.g., outdoor telecom); requires PCB footprint change. | Select SMBJ28CA when board space allows SMC/SMB package and >400 W headroom is required for IEC 61000-4-5 Level 4 compliance. |
| P6KE27CA | DO-15 package; 27 V VWM, 43.0 V VC @ 9.3 A - slightly lower VWM and tighter VC, but only 600 W PPPM and no AEC-Q101 qualification. | Lower cost alternative for non-automotive industrial use; lacks automotive reliability validation and RoHS whisker testing. | Choose P6KE27CA for cost-sensitive consumer or commercial equipment where AEC-Q101 and JESD201 compliance are not mandated. |
Compared with BZW04P28B-E3/54, SMBJ28CA offers higher surge margin in a surface-mount package but requires layout redesign, while P6KE27CA provides similar clamping in a legacy through-hole form at lower qualification level - making BZW04P28B-E3/54 the optimal choice for AEC-Q101–required 24 V system protection with DO-41 compatibility.
Availability
BZW04P28B-E3/54 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 long-lifecycle support.
Supply support for BZW04P28B-E3/54 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P series belongs to Vishay's TransZorb® TVS family engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 qualification and stable parametric performance.
FAQ
What is the exact stand-off voltage (VWM) of BZW04P28B-E3/54?
The BZW04P28B-E3/54 has a guaranteed stand-off voltage of 28.2 V, meaning it remains non-conductive up to this DC or RMS voltage level under normal operation. This value is specified at 25 °C and ensures safe operation in 24 V nominal systems with typical tolerance margins. The BZW04P28B-E3/54 maintains this rating across its full temperature range with minimal drift.
Is BZW04P28B-E3/54 suitable for automotive applications?
Yes, BZW04P28B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS sensor interfaces. Its construction - glass-passivated junction, DO-41 package with matte tin leads, and 175 °C maximum junction temperature - meets the mechanical, thermal, and reliability requirements defined in the AEC-Q101 standard. The BZW04P28B-E3/54 carries the HE3 suffix variant for full AEC-Q101 compliance.
What does the "B" suffix in BZW04P28B-E3/54 indicate?
The "B" suffix in BZW04P28B-E3/54 denotes bi-directional functionality - confirming symmetrical clamping behavior in both forward and reverse polarity. Unlike uni-directional variants (e.g., BZW04P28-E3/54), this version has no cathode marking and protects AC-coupled or floating nodes without orientation dependency. The BZW04P28B-E3/54 therefore supports applications such as RS-485, CAN bus, and transformer-coupled interfaces.
How does BZW04P28B-E3/54 perform under repeated surge stress?
BZW04P28B-E3/54 is rated for repetitive 10/1000 µs surges at a 0.01% duty cycle, supporting sustained protection in dynamically stressed environments like factory automation or vehicle subsystems. Its glass-passivated junction and thermal design enable stable VBR and leakage over thousands of surge events. Derating curves (Fig. 2) confirm usable IPPM down to ~6.5 A at TJ = 125 °C - critical for BZW04P28B-E3/54 deployment in thermally constrained layouts.
What packaging format is used for BZW04P28B-E3/54?
BZW04P28B-E3/54 is supplied in 13" diameter paper tape and reel, with base quantity 550 units per reel and package code "54". The device uses DO-204AL (DO-41) axial package: 25.4 mm minimum overall length, 5.2 mm maximum body diameter, and tin-plated leads compliant with J-STD-002. The E3 suffix confirms RoHS compliance and JESD201 Class 1A whisker resistance - essential for high-reliability BZW04P28B-E3/54 deployments.
BZW04P28B-E3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P28B-E3/54 FAQ
1.How can I place an order for BZW04P28B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P28B-E3/54 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 BZW04P28B-E3/54 reliable?
The price and inventory of BZW04P28B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P28B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P28B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P28B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P28B-E3/54?
BZW04P28B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P28B-E3/54 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 BZW04P28B-E3/54?
For technical support, including BZW04P28B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P28B-E3/54 requirements.
6.How does Aetrix verify that BZW04P28B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P28B-E3/54 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 BZW04P28B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P28B-E3/54?
All BZW04P28B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P28B-E3/54, 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 BZW04P28B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P28B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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