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Vishay General Semiconductor - Diodes Division BZW04-28BHE3/54
- Part No.:
- BZW04-28BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-28BHE3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,123
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Product details
Overview
BZW04-28BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 28.2 V stand-off voltage (VWM), 31.4–34.7 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 and industrial I/O protection.
For engineers reviewing the BZW04-28BHE3/54 datasheet, BZW04-28BHE3/54 pinout, BZW04-28BHE3/54 application, or BZW04-28BHE3/54 equivalent, this device serves as an AEC-Q101 qualified, RoHS-compliant bidirectional TVS for high-reliability transient suppression where low clamping ratio, fast response (<1 ns), and stable temperature coefficient (0.098 %/°C) are critical selection criteria.
Technical Context
This device operates bidirectionally with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance and low incremental surge resistance under repetitive transients.
The BZW04-28BHE3/54 delivers 400 W peak pulse power handling per 10/1000 μs waveform at TA = 25 °C, derating linearly above 25 °C with 175 °C maximum junction temperature. It exhibits 1.0 μA max reverse leakage at VWM, and its clamping behavior is validated up to 8.8 A peak pulse current with 45.7 V maximum clamping voltage.
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 / 34.7 V at 1 mA - Confirmed breakdown range ensures reliable triggering across process and temperature variation. |
| VC @ IPPM | 45.7 V at 8.8 A - Clamping voltage limits downstream IC stress during 10/1000 μs surge; clamping ratio = 1.62×VWM. |
| PPPM | 400 W - Peak pulse power capability enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 24 V lines. |
| IPPM | 8.8 A - Peak pulse current rating directly supports surge immunity testing per ISO 7637-2 Pulse 1/2a/5a in automotive environments. |
| TJ max | 175 °C - High junction temperature rating allows operation in under-hood or industrial enclosures without thermal derating penalties. |
| Temp. coeff. of VBR | 0.098 %/°C - Low drift ensures predictable clamping voltage shift over -55 °C to +175 °C operating range. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; no polarity marking - consistent with bidirectional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | No functional distinction between leads; either terminal may connect to protected line or ground - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing - suitable for engine control, body electronics, and ADAS sensor modules. |
| Glass passivated chip junction | Enables <1.0 μA reverse leakage at VWM and stable long-term parametric drift - critical for low-power always-on circuits. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events without degradation - meets IEC 61000-4-5 and ISO 7637-2 immunity requirements for industrial and transportation systems. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes voltage overshoot during clamping - protects 30 V-rated MOSFETs and 3.3 V/5 V logic interfaces connected to same line. |
| UL 94 V-0 molded epoxy case | Self-extinguishing housing prevents flame propagation in enclosed assemblies - required for industrial control panel certifications. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in 24 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground, responding within <1 ns to suppress spikes exceeding 28.2 V. Use Value: Prevents latch-up or gate oxide damage in automotive-grade microcontrollers and transceivers by limiting transient voltage to ≤45.7 V at 8.8 A. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil kickback and EFT bursts in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-clamp TVS mounted at connector entry point, shunting surge energy away from optocoupler input stages and level-shifting circuitry. Use Value: Maintains signal integrity during 4 kV EFT (IEC 61000-4-4) and 2 kV surge (IEC 61000-4-5) events without requiring additional series impedance or filtering. |
| Telecom Line Interface Protection | Consumer Power Adapter EMI Filtering |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in outdoor telecom equipment from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Primary-level bidirectional TVS placed differential-mode across A/B lines, complemented by common-mode chokes and secondary TVS. Use Value: Withstands 10/1000 μs 400 W pulses while maintaining <1 pF junction capacitance - avoids signal distortion at up to 10 Mbps data rates. |
Use Scenario: Suppressing fast-rising switching noise and line surges on DC output rails of wall-mounted AC/DC adapters used in smart home devices. IC Role / Device Role / Timing Role: Secondary-side TVS across +VOUT and GND, triggered only during overvoltage faults to protect downstream USB-PD controllers and PMICs. Use Value: Enables compact design with 0.35 g unit weight and DO-41 footprint - fits tight spacing constraints while meeting UL 62368-1 transient immunity requirements. |
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 VWM (28 V), but SMC (DO-214AB) package; 600 W PPPM; higher IPPM (33.3 A); 45.4 V VC. | Higher power handling suits mains-connected equipment; larger footprint requires PCB rework. | Select SMBJ28CA when surge energy exceeds 400 W or board space permits SMC package. |
| 1.5KE27CA | Lower VWM (23.1 V); same DO-41 package; 1500 W PPPM; 43.0 V VC at 34.9 A. | Greater margin below 24 V nominal rail but tighter VWM increases leakage risk in low-power sleep modes. | Choose 1.5KE27CA for legacy designs requiring higher surge headroom and compatibility with existing DO-41 footprints. |
Compared with SMBJ28CA and 1.5KE27CA, the BZW04-28BHE3/54 offers AEC-Q101 qualification and optimized clamping ratio for automotive and industrial 24 V systems, while retaining the compact DO-41 form factor and RoHS/whisker-tested HE3 lead finish.
Availability
BZW04-28BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and DO-41 through-hole manufacturability.
Supply support for BZW04-28BHE3/54 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The BZW04 series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 qualification, stable clamping performance, and robust packaging for under-hood and factory-floor deployment.
FAQ
What is the polarity configuration of the BZW04-28BHE3/54?
The BZW04-28BHE3/54 is a bidirectional TVS diode with symmetrical avalanche characteristics in both directions. It has no cathode marking and functions identically regardless of lead orientation - ideal for protecting AC-coupled or floating signal lines where polarity cannot be guaranteed. This behavior is confirmed in the "BIDIRECTIONAL TYPES" table of Vishay document 88316.
Does the BZW04-28BHE3/54 meet automotive qualification standards?
Yes, the BZW04-28BHE3/54 carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model ESD - making it suitable for engine control units, body control modules, and ADAS sensor interfaces.
What is the maximum clamping voltage of the BZW04-28BHE3/54 under surge conditions?
The BZW04-28BHE3/54 has a maximum clamping voltage (VC) of 45.7 V at 8.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components rated for ≤50 V absolute maximum will remain within safe operating limits during standardized surge events.
Can the BZW04-28BHE3/54 be used in surface-mount assembly processes?
No - the BZW04-28BHE3/54 uses a DO-41 (DO-204AL) axial-leaded package intended for through-hole mounting. It is supplied on 13" paper tape and reel (package code 54) for automated insertion, not reflow soldering. For SMT alternatives, consider SMBJ28CA or SMCJ28CA, which share similar electrical specs but use SMC/DO-214AB packages.
How does the temperature coefficient affect the BZW04-28BHE3/54's performance?
The BZW04-28BHE3/54 has a maximum temperature coefficient of VBR of 0.098 %/°C, meaning its breakdown voltage increases by ≤0.098% per °C rise in junction temperature. At 125 °C, VBR shifts by ≤9.75%, remaining within 31.4–34.7 V specification bounds - ensuring predictable clamping behavior across full -55 °C to +175 °C operating range.
BZW04-28BHE3/54 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:
- -
- 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:
- -
- 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)
BZW04-28BHE3/54 FAQ
1.How can I place an order for BZW04-28BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-28BHE3/54 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 BZW04-28BHE3/54 reliable?
The price and inventory of BZW04-28BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-28BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-28BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-28BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-28BHE3/54?
BZW04-28BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-28BHE3/54 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 BZW04-28BHE3/54?
For technical support, including BZW04-28BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-28BHE3/54 requirements.
6.How does Aetrix verify that BZW04-28BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-28BHE3/54 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 BZW04-28BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-28BHE3/54?
All BZW04-28BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-28BHE3/54, 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 BZW04-28BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-28BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-28BHE3/54 Tags
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