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Vishay General Semiconductor - Diodes Division BZW04P20BHE3/73
- Part No.:
- BZW04P20BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P20BHE3/73.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,902
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Product details
Overview
BZW04P20BHE3/73 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, and 400 W peak pulse power capability with 10/1000 μs waveform - suitable for safeguarding MOSFETs and sensor interfaces against inductive switching transients.
For engineers reviewing the BZW04P20BHE3/73 datasheet, BZW04P20BHE3/73 pinout, BZW04P20BHE3/73 application, or BZW04P20BHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional polarity, 175 °C max junction temperature, and low 0.094 %/°C breakdown voltage temperature coefficient - critical for automotive and industrial surge immunity design.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
The device is rated for 400 W peak pulse power (10/1000 μs), derated above 25 °C per Fig. 2, and supports repetitive surge duty cycles up to 0.01 %. It exhibits 1.0 μA maximum reverse leakage at VWM and meets JESD22-B102 solderability standards with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VC @ IPPM | 33.2 V at 12.0 A - clamping voltage under full-rated surge; limits downstream voltage stress during transient events. |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; determines survivability against common IEC 61000-4-5 surges. |
| VBR min/max | 22.8 V / 26.4 V at 1.0 mA - verified breakdown range ensures consistent turn-on across production lots and temperature. |
| TJ max | +175 °C - high junction temperature rating enables reliable operation in under-hood automotive or industrial environments. |
| ID @ VWM | 1.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in always-on circuits. |
| Temp. Coeff. | 0.094 %/°C - predictable VBR drift with temperature supports stable clamping performance across -55 °C to +175 °C. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD22-B102; no polarity marking for bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No cathode band; terminals interchangeable - enables placement without orientation check in PCB layout. |
| Lead 1 | Current entry/exit node | Handles full IPPM (12.0 A) bidirectionally; lead frame designed for low thermal resistance to ambient. |
| Lead 2 | Current entry/exit node | Electrically identical to Lead 1; symmetry eliminates need for directional routing in differential or AC-coupled lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal stress and high-humidity operating conditions. |
| 400 W peak pulse power (10/1000 μs) | Withstands multiple IEC 61000-4-5 Level 3 (1 kV, 2 Ω source) surges without degradation. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 24 V buses. |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance and Directive 2011/65/EU; suitable for automotive production. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and body control module inputs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between power rail and ground, responding within <1 ns to transients exceeding 20.5 V. Use Value: Prevents latch-up or permanent damage to 5 V tolerant microcontrollers during 12 V system surges up to 400 W. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Standoff-mode protector on 4–20 mA current loop lines, conducting only during >33.2 V excursions. Use Value: Maintains sub-μA leakage at 24 V supply, preserving loop accuracy while surviving repeated 1 kV EFT bursts. |
| Consumer Equipment AC Adapter Input | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-side transient suppression on 19 V laptop adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-acting shunt element across DC output, clamping to 33.2 V before downstream DC-DC converters reach overvoltage trip. Use Value: Enables compliance with IEC 62368-1 Annex G requirements using single-device solution without series impedance. |
Use Scenario: Primary protection on DSL line interface transformers subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bi-directional clamp across transformer center-tap and ground, symmetrically limiting common-mode voltage swing. Use Value: Withstands 10/700 μs telecom surges up to 1 kV due to matched VBR tolerance and low VC, preserving signal integrity. |
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 | Same DO-214AA package; higher 600 W PPPM but larger 34.4 V VC at 17.3 A; ±5 % VBR tolerance vs. ±8.7 % for BZW04P20BHE3/73. | Preferred where board space allows SMC/SMB footprint and higher surge margin is required; less optimal for tight 24 V rail margins. | Select SMBJ20CA when higher peak power and tighter VBR distribution justify re-layout; not drop-in compatible due to package and clamping difference. |
| P6KE22CA | DO-15 package; lower 600 W rating but 36.2 V VC at 16.6 A; wider VBR range (20.9–23.1 V); non-AEC-Q101 rated. | Suitable for commercial-grade industrial controls where automotive qualification is unnecessary and cost sensitivity is high. | Choose P6KE22CA for cost-driven non-automotive designs accepting higher clamping and no AEC-Q101 validation; requires new footprint. |
Compared with SMBJ20CA and P6KE22CA, BZW04P20BHE3/73 offers AEC-Q101 qualification, tighter thermal coefficient (0.094 %/°C), and DO-41 through-hole compatibility - making it optimal for legacy automotive harnesses and vibration-prone industrial mounts where leaded reliability is prioritized over surface-mount density.
Availability
BZW04P20BHE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with traceable AEC-Q101 compliance and long-lifecycle support.
Supply support for BZW04P20BHE3/73 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, precision, and automotive-grade qualification.
The BZW04P series belongs to Vishay's TransZorb® TVS platform, engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive power nets, industrial automation I/O, and telecom line interfaces.
FAQ
What is the polarity configuration of BZW04P20BHE3/73?
BZW04P20BHE3/73 is a bi-directional TVS diode with symmetrical electrical characteristics in both directions. It has no cathode marking and is intended for AC or bidirectional DC protection applications - unlike uni-directional variants such as BZW04P20HE3/73, which feature a cathode band and conduct only in reverse bias.
Is BZW04P20BHE3/73 qualified for automotive use?
Yes, BZW04P20BHE3/73 carries the HE3 suffix, indicating AEC-Q101 qualification and compliance with JESD201 Class 2 whisker resistance. It is rated for operation from –55 °C to +175 °C and validated for automotive under-hood and powertrain applications per Vishay Document Number 88316.
What does the "B" in BZW04P20BHE3/73 signify?
The "B" suffix in BZW04P20BHE3/73 explicitly denotes bi-directional functionality. This distinguishes it from uni-directional versions like BZW04P20HE3/73. All electrical parameters - including VWM, VBR, VC, and IPPM - apply identically in both polarities, enabling simplified design for AC-coupled or floating signal lines.
What is the maximum clamping voltage of BZW04P20BHE3/73 under surge conditions?
The maximum clamping voltage (VC) of BZW04P20BHE3/73 is 33.2 V at 12.0 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage imposed on protected circuitry during standardized surge events.
How does the HE3 suffix differ from E3 in BZW04P20BHE3/73?
The HE3 suffix in BZW04P20BHE3/73 indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only (JESD201 Class 1A). Both meet RoHS Directive 2011/65/EU, but HE3 is mandatory for automotive production and high-reliability industrial deployments.
BZW04P20BHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -
- 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)
BZW04P20BHE3/73 FAQ
1.How can I place an order for BZW04P20BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P20BHE3/73 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 BZW04P20BHE3/73 reliable?
The price and inventory of BZW04P20BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P20BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P20BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P20BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P20BHE3/73?
BZW04P20BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P20BHE3/73 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 BZW04P20BHE3/73?
For technical support, including BZW04P20BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P20BHE3/73 requirements.
6.How does Aetrix verify that BZW04P20BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P20BHE3/73 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 BZW04P20BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P20BHE3/73?
All BZW04P20BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P20BHE3/73, 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 BZW04P20BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P20BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P20BHE3/73 Tags
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