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Vishay General Semiconductor - Diodes Division BZW04-20HE3/54
- Part No.:
- BZW04-20HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-20HE3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,365
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Product details
Overview
BZW04-20HE3/54 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 20.5 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 33.2 V clamping voltage (VC) at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - suitable for protecting automotive sensor interfaces against ESD and load dump.
For engineers reviewing the BZW04-20HE3/54 datasheet, BZW04-20HE3/54 pinout, BZW04-20HE3/54 application, or BZW04-20HE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, and 175 °C maximum junction temperature for under-hood deployment.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) across -55 °C to +175 °C operating range.
The 400 W peak pulse power rating is defined per 10/1000 μs waveform with 0.01 % duty cycle, and thermal derating follows a linear curve above 25 °C ambient, maintaining safe operation up to 75 °C lead temperature with infinite heatsink conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - maximum continuous reverse voltage before clamping initiates; defines safe operating window for protected circuitry |
| VBR min/max | 22.8 V / 25.2 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients |
| VC @ IPPM | 33.2 V at 12 A - clamped voltage during worst-case surge; limits stress on downstream ICs or MOSFETs |
| PPPM | 400 W - peak transient energy absorption capacity with 10/1000 μs waveform; meets IEC 61000-4-5 Level 3 |
| TJ max | +175 °C - maximum junction temperature; supports under-hood automotive environments without derating penalty |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage at standoff voltage; avoids signal distortion or battery drain in always-on systems |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD per AEC standard |
Pinout & Package
Package: DO-41 (DO-204AL), 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connects to lower-potential side of protected line; forms symmetrical clamp path with cathode |
| Cathode | Current entry point in reverse bias | Connects to higher-potential side; bidirectional structure eliminates need for polarity marking |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, low-noise avalanche behavior and long-term parameter consistency over temperature and life |
| 400 W peak pulse power | Supports robust protection against ISO 7637-2 pulse 1, 2a, 2b, and 5a/b in 12 V automotive systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
| DO-41 mechanical standardization | Ensures drop-in replacement capability with legacy TVS diodes and compatibility with automated axial insertion equipment |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog 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 vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to limit transient excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V microcontrollers and signal conditioners by holding clamped voltage ≤33.2 V during 12 A surges. | Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive during normal operation but conducts within nanoseconds when line-to-ground voltage exceeds 20.5 V. Use Value: Maintains signal integrity with <1.0 μA leakage at 20.5 V while absorbing 400 W surges - eliminating need for series impedance or active protection circuitry. |
| Consumer Appliance Motor Drive Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding microcontroller GPIOs and H-bridge gate drivers in washing machine or HVAC blower modules from back-EMF generated by brushed DC motors. IC Role / Device Role / Timing Role: Fast-response shunt element across motor coil supply rails or driver outputs, diverting inductive kickback energy to ground. Use Value: Withstands repetitive 40 A IFSM pulses and operates reliably at 175 °C junction temperature - enabling compact, fanless enclosure designs. | Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers subjected to lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary-level TVS placed before gas discharge tube (GDT) or secondary-stage MOV, establishing first clamping threshold at 20.5 V. Use Value: Provides precise, repeatable clamping with ±1.2 V VBR tolerance and 0.094 %/°C temperature coefficient - ensuring consistent protection margin across operating temperature range. |
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 package (SMB), 20 V VWM, 33.2 V VC @ 12.3 A, same 400 W PPPM but higher capacitance (≈150 pF vs. ≈50 pF) | Surface-mount layout; less suitable for high-frequency signal lines due to higher junction capacitance | Select SMBJ20CA only when board space constraints require SMD packaging and signal bandwidth <10 MHz |
| P6KE20CA | DO-15 package, 20 V VWM, 32.4 V VC @ 12.3 A, same AEC-Q101 qualification but 600 W PPPM rating (10/1000 μs) | Higher surge margin for infrequent, high-energy events; larger footprint and higher thermal mass | Choose P6KE20CA where system-level testing requires >400 W margin or where lead-forming flexibility is needed for chassis mounting |
Compared with SMBJ20CA and P6KE20CA, the BZW04-20HE3/54 offers identical clamping performance in a smaller DO-41 axial package with lower parasitic capacitance, making it optimal for cost-sensitive, high-volume automotive and industrial applications requiring AEC-Q101 compliance and through-hole assembly.
Availability
BZW04-20HE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input conditioning, and consumer appliance motor control requiring stable component supply and AEC-Q101 traceability.
Supply support for BZW04-20HE3/54 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 BZW04 series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 qualification and DO-41 mechanical interoperability are mandatory.
FAQ
What is the polarity configuration of BZW04-20HE3/54?
The BZW04-20HE3/54 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity marking on the package. This allows direct placement across AC-coupled lines or differential pairs without orientation concerns, unlike unidirectional variants which require cathode alignment. Its bidirectional behavior is confirmed in the Vishay datasheet Document Number 88316, Section "BIDIRECTIONAL TYPES".
Is BZW04-20HE3/54 qualified for automotive use?
Yes, BZW04-20HE3/54 carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's ordering nomenclature and datasheet note on page 4. It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements, making it suitable for automotive body electronics, powertrain sensors, and ADAS modules where zero-field-failure reliability is mandated.
What is the maximum clamping voltage for BZW04-20HE3/54 under surge conditions?
The maximum clamping voltage (VC) for BZW04-20HE3/54 is 33.2 V at 12 A peak pulse current (IPPM), measured with a 10/1000 μs waveform per IEC 61000-4-5. This value is specified in the Electrical Characteristics table on page 2 of Vishay Document Number 88316 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events.
How does the HE3 suffix differ from the E3 suffix in BZW04-20HE3/54?
The HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 indicates commercial-grade RoHS compliance with JESD201 Class 1A whisker testing. For BZW04-20HE3/54, the HE3 designation confirms automotive-grade reliability validation, including extended temperature operation (-55 °C to +175 °C) and enhanced process controls - critical for safety-relevant automotive subsystems.
What package type and lead finish does BZW04-20HE3/54 use?
BZW04-20HE3/54 uses the DO-41 (DO-204AL) axial package with matte tin-plated leads, compliant with J-STD-002 and JESD22-B102 solderability standards. The molding compound meets UL 94 V-0 flammability rating, and the leads support solder dipping at 275 °C for up to 10 seconds per JESD22-B106 - enabling compatibility with both wave and selective soldering processes in high-volume manufacturing.
BZW04-20HE3/54 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:
- 1
- Bidirectional Channels:
- -
- 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)
BZW04-20HE3/54 FAQ
1.How can I place an order for BZW04-20HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-20HE3/54 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 BZW04-20HE3/54 reliable?
The price and inventory of BZW04-20HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-20HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-20HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-20HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-20HE3/54?
BZW04-20HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-20HE3/54 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 BZW04-20HE3/54?
For technical support, including BZW04-20HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-20HE3/54 requirements.
6.How does Aetrix verify that BZW04-20HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-20HE3/54 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 BZW04-20HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-20HE3/54?
All BZW04-20HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-20HE3/54, 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 BZW04-20HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-20HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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