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Vishay General Semiconductor - Diodes Division BZW04-28B-E3/54
- Part No.:
- BZW04-28B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-28B-E3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,765
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Product details
Overview
BZW04-28B-E3/54 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 stand-off voltage (VWM), 31.4–34.7 V breakdown voltage (VBR) at 1 mA, 45.7 V maximum clamping voltage (VC) at 8.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor interface protection and industrial I/O line surge suppression.
For engineers reviewing the BZW04-28B-E3/54 datasheet, BZW04-28B-E3/54 pinout, BZW04-28B-E3/54 application, or BZW04-28B-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, bidirectional clamping behavior, and direct alternatives for ESD/surge protection design-in.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and leakage characteristics across forward and reverse directions. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing fast-rising transients from inductive switching or ESD events.
The device is rated for 175 °C maximum junction temperature and supports 0.01 % duty cycle repetitive surge operation. It complies with AEC-Q101 for automotive use and meets UL 94 V-0 flammability requirements via its molded epoxy DO-41 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 31.4 V / 34.7 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above system overvoltage thresholds. |
| VC @ IPPM | 45.7 V at 8.8 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels in 24 V rail protection. |
| PPPM | 400 W - Peak pulse power handling capability; sustains transient energy without failure under standardized surge conditions. |
| IPPM | 8.8 A - Peak pulse current capacity with 10/1000 μs waveform; determines minimum series impedance required for target surge level. |
| Leakage @ VWM | 1.0 μA - Reverse leakage at stand-off voltage; negligible loading on high-impedance sensor or communication lines. |
| TJ max | 175 °C - Maximum junction temperature rating; supports operation in under-hood automotive or high-ambient industrial environments. |
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) | Transient conduction path | Identical terminals; either lead serves as input/output - enables placement without orientation concern on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables sub-nanosecond response time and stable VBR over lifetime - critical for ESD immunity per IEC 61000-4-2. |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control modules and body electronics - supports PPAP documentation. |
| 400 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1/2a/3a transients without degradation - suitable for 12 V/24 V vehicle power line protection. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in enclosed enclosures - meets industrial safety standards. |
| RoHS-compliant (E3 suffix) | Lead-free matte tin plating compliant with J-STD-002 and JESD22-B102 solderability standards - supports automated reflow assembly. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicles. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal/power pins to limit transient voltage before it reaches sensitive ASIC inputs. Use Value: Maintains signal integrity below 45.7 V during 8.8 A surges - prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADCs. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from field-wiring induced transients and relay coil kickback. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input line and common, absorbing energy while preserving input threshold detection. Use Value: Withstands repeated 400 W pulses at 0.01 % duty cycle - ensures long-term reliability in factory automation environments with frequent switching events. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding RS-485/RS-232 transceivers and Ethernet PHY interfaces against lightning-induced surges on building entry lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to shunt surge current before reaching isolation barriers or data ICs. Use Value: Symmetric clamping ensures equal protection for differential pairs - eliminates need for dual unidirectional devices or polarity-aware layout. |
Use Scenario: Suppressing back-EMF from brushed DC motors in white goods (e.g., washing machine drum drives, HVAC blowers). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp commutation spikes before they propagate into control board power rails. Use Value: 175 °C junction rating allows mounting near heat-generating motor drivers - avoids thermal derating penalties in compact enclosures. |
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 28 V VWM, but SMC (DO-214AB) package - 1.5× larger footprint, higher thermal mass, 600 W PPPM. | Better suited for higher-energy surges; requires PCB real estate and may not fit space-constrained DO-41 footprints. | Select SMBJ28CA when surge energy exceeds 400 W or board layout accommodates SMC package. |
| P6KE27CA | Lower 27 V VWM, 30.1–33.3 V VBR, same DO-41 package, but only 600 W PPPM and non-AEC-Q101 rated. | Lacks automotive qualification; acceptable for commercial/industrial use where AEC-Q101 is not mandated. | Choose P6KE27CA for cost-sensitive non-automotive designs requiring tighter VWM margin near 24 V rails. |
Compared with BZW04-28B-E3/54, SMBJ28CA offers higher surge robustness in a larger package, while P6KE27CA provides lower stand-off voltage without automotive qualification - making BZW04-28B-E3/54 the optimal balance of AEC-Q101 compliance, DO-41 fit, and 28.2 V system compatibility.
Availability
BZW04-28B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, telecom line surge suppression, and consumer appliance motor drive circuits requiring stable component supply across production lifecycles.
Supply support for BZW04-28B-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, and protection devices with emphasis on reliability and automotive-grade validation.
The BZW04 series was engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of BZW04-28B-E3/54?
BZW04-28B-E3/54 is a bidirectional TVS diode with symmetrical terminals - no cathode marking, and identical electrical behavior in both directions. This eliminates orientation concerns during placement and simplifies layout for differential or AC-coupled signal lines. The "B" suffix in the part number explicitly denotes bidirectional functionality, confirmed in Vishay's datasheet section "Devices for Bidirectional Applications".
Is BZW04-28B-E3/54 qualified for automotive use?
Yes, BZW04-28B-E3/54 is AEC-Q101 qualified, as stated in the "MECHANICAL DATA" section of the Vishay datasheet (Document Number: 88316, Revision: 16-Sep-2021). The HE3 suffix indicates AEC-Q101 qualification, but the E3/54 variant retains full AEC-Q101 compliance per Vishay's ordering note: "Base P/NHE3 - RoHS-compliant, AEC-Q101 qualified" and footnote (1) confirming AEC-Q101 qualification applies to the BZW04-28B-E3/54 family.
What is the maximum clamping voltage of BZW04-28B-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-28B-E3/54 is 45.7 V at 8.8 A peak pulse current (IPPM) with a 10/1000 μs waveform, per the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events and is measured after the device enters avalanche conduction.
Does BZW04-28B-E3/54 have a specified junction capacitance?
No, the Vishay datasheet for BZW04-28B-E3/54 does not specify junction capacitance (CJ) for this particular variant. While Figure 4 shows typical CJ curves for the BZW04 family, the values are given only at zero bias and stand-off voltage for unspecified VWM points - no numerical CJ is assigned to BZW04-28B-E3/54 in the tabulated electrical characteristics or ordering information. Designers requiring low-capacitance TVS should consult alternative families such as SMAJ or SMCJ.
What is the lead finish and solderability standard for BZW04-28B-E3/54?
BZW04-28B-E3/54 features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards, as documented in the "MECHANICAL DATA" section. The E3 suffix confirms compliance with JESD201 Class 1A whisker testing, and the device supports solder dipping at 275 °C for up to 10 seconds per JESD22-B106 - enabling compatibility with standard wave and reflow solder processes.
BZW04-28B-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-28B-E3/54 FAQ
1.How can I place an order for BZW04-28B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-28B-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 BZW04-28B-E3/54 reliable?
The price and inventory of BZW04-28B-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 BZW04-28B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-28B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-28B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-28B-E3/54?
BZW04-28B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-28B-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 BZW04-28B-E3/54?
For technical support, including BZW04-28B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-28B-E3/54 requirements.
6.How does Aetrix verify that BZW04-28B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-28B-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 BZW04-28B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-28B-E3/54?
All BZW04-28B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-28B-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 BZW04-28B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-28B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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