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Vishay General Semiconductor - Diodes Division BZW04P20B-E3/54
- Part No.:
- BZW04P20B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P20B-E3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,513
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Product details
Overview
BZW04P20B-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 20.5 V stand-off voltage (VWM), 33.2 V clamping voltage (VC) at 12.0 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching transients.
For engineers reviewing the BZW04P20B-E3/54 datasheet, BZW04P20B-E3/54 pinout, BZW04P20B-E3/54 application, or BZW04P20B-E3/54 equivalent, key selection considerations include its DO-204AL (DO-41) axial package, bi-directional polarity, AEC-Q101 qualification, 175 °C maximum junction temperature, and compliance with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements.
Technical Context
This bi-directional TVS diode operates symmetrically in both forward and reverse bias, enabling clamp-based surge suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, critical for consistent clamping under repetitive transients.
The device delivers 400 W peak pulse power handling per the 10/1000 µs standard waveform, with thermal derating above 25 °C ambient per Figure 2 and junction temperature limits up to 175 °C. It exhibits a temperature coefficient of breakdown voltage of +0.094 %/°C, supporting predictable performance across automotive and industrial operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous working voltage before conduction begins in either direction. |
| VC @ IPPM | 33.2 V - Clamped voltage seen by protected circuit during 12.0 A 10/1000 µs transient. |
| IPPM (Peak Pulse Current) | 12.0 A - Maximum non-repetitive surge current the device safely clamps without failure. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy absorption capability under standardized 10/1000 µs waveform. |
| TJmax | 175 °C - Maximum allowable junction temperature, enabling operation in under-hood or high-ambient industrial environments. |
| Package | DO-204AL (DO-41) - Axial-leaded, RoHS-compliant epoxy package with matte tin-plated leads solderable per J-STD-002. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
DO-204AL (DO-41) axial package: hermetically sealed glass-passivated chip in molded epoxy housing, UL 94 V-0 rated, with 0.205" (5.2 mm) body diameter and 0.026" (0.66 mm) lead diameter. Bi-directional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path terminal | Either end serves as input/output for transient current; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against severe inductive load switching events in motor drives and power supplies. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage stress on downstream ICs while maintaining margin above operating rail. |
| AEC-Q101 qualified | Validates reliability for automotive infotainment, body control modules, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures stable leakage current (<1 µA at VWM) and repeatable breakdown characteristics over lifetime. |
| RoHS-compliant, matte tin-plated leads | Supports lead-free reflow and wave soldering per JESD 22-B106 (275 °C, 10 s max). |
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 limit transient excursions. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends during vehicle battery disconnection events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and EFT noise. IC Role / Device Role / Timing Role: Standoff-mode protector shunting surges from 24 V DC field wiring into common ground plane. Use Value: Maintains system uptime by eliminating false triggering and component replacement in factory automation environments. |
| Consumer Power Adapter Input Stage | MOSFET Gate Protection |
|
Use Scenario: Secondary-side transient suppression on 12–24 V DC outputs of wall adapters and USB-PD auxiliary supplies. IC Role / Device Role / Timing Role: Fast-response clamp limiting voltage spikes induced by cable hot-plug or capacitive load switching. Use Value: Avoids overvoltage damage to connected devices (e.g., routers, smart speakers) without adding bulk capacitance or delay. |
Use Scenario: Gate-source protection of N-channel power MOSFETs in half-bridge motor drivers and SMPS gate drivers. IC Role / Device Role / Timing Role: Bidirectional clamp absorbing Miller-induced voltage overshoot and shoot-through transients. Use Value: Extends MOSFET lifetime by preventing gate oxide rupture during fast-switching transitions and layout parasitic ringing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | DO-214AA (SMB) package; 20 V VWM, 32.4 V VC @ 12.3 A; lower 600 W PPPM. | Surface-mount alternative requiring PCB redesign; better suited for space-constrained consumer electronics. | Select when board area is limited and reflow assembly is preferred over through-hole mounting. |
| 1.5KE20CA | DO-201AD package; 20 V VWM, 34.6 V VC @ 11.6 A; higher 1500 W PPPM; larger footprint. | Higher-power legacy alternative with slower response due to higher junction capacitance (~150 pF vs. ~50 pF). | Choose for legacy industrial designs where higher surge margin is prioritized over speed and size. |
Compared with SMBJ20CA and 1.5KE20CA, BZW04P20B-E3/54 offers optimal balance of axial through-hole compatibility, AEC-Q101 qualification, low clamping voltage, and compact DO-41 form factor-making it ideal for new automotive and industrial designs requiring proven reliability without SMT conversion.
Availability
BZW04P20B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for BZW04P20B-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 validation.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability bi-directional surge suppression in automotive, industrial, and telecom infrastructure where robustness against repetitive transients is mandatory.
FAQ
What is the breakdown voltage range for BZW04P20B-E3/54?
The BZW04P20B-E3/54 has a specified breakdown voltage (VBR) range of 22.8 V to 26.4 V at 1.0 mA test current (IT). This tolerance ensures reliable turn-on behavior across manufacturing lots and temperature extremes, supporting consistent clamping performance in safety-critical applications.
Is BZW04P20B-E3/54 unidirectional or bidirectional?
BZW04P20B-E3/54 is a bi-directional TVS diode, as confirmed by the "B" suffix in its part number and explicit documentation stating "devices for bi-direction applications." It provides symmetrical clamping in both polarities, eliminating the need for orientation during placement and simplifying design for AC-coupled or floating signal lines.
Does BZW04P20B-E3/54 meet automotive qualification standards?
Yes, BZW04P20B-E3/54 is AEC-Q101 qualified, as indicated by the "HE3" variant designation and explicitly stated in the mechanical data section. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain and chassis systems.
What is the maximum clamping voltage of BZW04P20B-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04P20B-E3/54 is 33.2 V at 12.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can BZW04P20B-E3/54 be used in place of a unidirectional TVS like BZW04P20-E3/54?
No-BZW04P20B-E3/54 is bi-directional and lacks polarity marking, whereas BZW04P20-E3/54 is unidirectional with a cathode band. Substitution requires verifying circuit topology: bi-directional types are mandatory for AC signals or floating rails, while unidirectional variants offer lower leakage in DC-biased applications.
BZW04P20B-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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
BZW04P20B-E3/54 FAQ
1.How can I place an order for BZW04P20B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P20B-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 BZW04P20B-E3/54 reliable?
The price and inventory of BZW04P20B-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 BZW04P20B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P20B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P20B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P20B-E3/54?
BZW04P20B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P20B-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 BZW04P20B-E3/54?
For technical support, including BZW04P20B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P20B-E3/54 requirements.
6.How does Aetrix verify that BZW04P20B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P20B-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 BZW04P20B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P20B-E3/54?
All BZW04P20B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P20B-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 BZW04P20B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P20B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P20B-E3/54 Tags
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