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Vishay General Semiconductor - Diodes Division BZW04-20BHE3/54
- Part No.:
- BZW04-20BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-20BHE3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,328
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Product details
Overview
BZW04-20BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal and power lines. It features a 20.5 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA test current, 33.2 V maximum clamping voltage at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the BZW04-20BHE3/54 datasheet, BZW04-20BHE3/54 pinout, BZW04-20BHE3/54 application, or BZW04-20BHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, low leakage (<1 μA at VWM), and thermal stability up to +175 °C junction temperature.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism, with symmetrical forward/reverse conduction enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 μs pulses.
The BZW04-20BHE3/54 delivers 400 W peak pulse power handling per JEDEC standard, derated linearly above 25 °C ambient, and maintains clamping performance across -55 °C to +175 °C operating junction range. It exhibits a temperature coefficient of VBR at 0.094 %/°C, supporting predictable voltage threshold behavior in thermally varying environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 22.8 V / 25.2 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 33.2 V at 12 A - Clamping voltage under full-rated 10/1000 μs surge; limits downstream IC stress to safe levels in protected circuits. |
| PPPM | 400 W - Peak pulse power dissipation capability; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 μA - Reverse leakage current at rated standoff voltage; minimizes standby power loss and avoids false triggering in high-impedance nodes. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics reliability, including temperature cycling, HTRB, and ESD. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between leads; either terminal serves as input/output for transient energy absorption in both directions. |
| Lead 1 | External connection point | Matte tin-plated copper alloy lead; supports wave/solder reflow up to 275 °C for 10 s (JESD 22-B106). |
| Lead 2 | External connection point | Identical to Lead 1; enables PCB layout flexibility with no orientation constraint during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events in industrial motor drives and automotive load-dump scenarios without degradation. |
| AEC-Q101 qualified | Validated for automotive-grade deployment in engine control units, body electronics, and ADAS sensor modules. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation essential for safety-critical applications in enclosed systems. |
| JESD201 class 2 whisker resistance (HE3 suffix) | Prevents tin whisker growth in high-reliability automotive and aerospace assemblies over extended service life. |
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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at connector interface to shunt transient energy before it reaches sensitive ASICs. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while adding zero propagation delay or signal distortion to DC/low-frequency sensor signals. |
Use Scenario: Safeguarding digital input cards in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with series impedance to limit let-through energy. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements without requiring active circuitry or complex filtering. |
| Telecom Line Interface Protection | Consumer Appliance Power Supply Clamp |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage transient suppressor on differential data lines, preceding gas discharge tube or MOV secondary protection. Use Value: Responds within <1 ns to sub-microsecond transients, limiting clamping voltage to 33.2 V before secondary protectors activate. |
Use Scenario: Suppressing switch-mode power supply turn-off spikes on AC mains input stages of washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Parallel-connected TVS across bridge rectifier output to clamp inductive kickback from relay coils and fan motors. Use Value: Absorbs 400 W peak energy without failure, preventing MOSFET gate oxide damage and reducing need for oversized snubbers. |
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 PPPM rating but higher capacitance (~100 pF vs. ~50 pF for BZW04-20BHE3/54). | Preferred for surface-mount designs with space constraints; less suitable for through-hole legacy boards or high-vibration environments requiring axial lead retention. | Select SMBJ20CA only when SMT assembly is mandatory and board-level capacitance budget allows. |
| P6KE20CA | DO-15 package, 20 V VWM, 34.6 V VC @ 11.5 A, 600 W PPPM rating but larger footprint and lower surge current density. | Better suited for high-energy single-event protection (e.g., AC mains); not AEC-Q101 qualified and lacks JESD201 class 2 whisker resistance. | Choose P6KE20CA for cost-sensitive industrial AC applications where automotive qualification is unnecessary. |
Compared with SMBJ20CA and P6KE20CA, the BZW04-20BHE3/54 offers superior mechanical robustness in vibration-prone automotive harnesses via axial DO-41 leads, guaranteed AEC-Q101 compliance, and optimized low-capacitance performance for high-speed signal line protection - making it the preferred choice for mission-critical bidirectional clamping where reliability and qualification are non-negotiable.
Availability
BZW04-20BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for BZW04-20BHE3/54 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, precision, and automotive-grade qualification.
The BZW04 series is engineered specifically for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the polarity configuration of BZW04-20BHE3/54?
The BZW04-20BHE3/54 is a bidirectional TVS diode with symmetrical terminals - neither lead is marked as anode or cathode. This allows installation in either orientation on PCBs, simplifying layout and eliminating risk of reverse polarity placement errors during assembly. The device clamps transients equally in both directions, making it ideal for AC-coupled or differential signal lines where polarity is undefined.
Is BZW04-20BHE3/54 qualified for automotive use?
Yes, the HE3 suffix confirms that BZW04-20BHE3/54 is AEC-Q101 qualified and meets JESD201 class 2 whisker resistance requirements. It has undergone rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics such as engine control units, body control modules, and ADAS sensor interfaces.
What does the "/54" in BZW04-20BHE3/54 indicate?
The "/54" denotes the preferred packaging code: 13-inch diameter paper tape and reel containing 550 units. This format is optimized for automated pick-and-place assembly in high-volume manufacturing. The "E3" indicates RoHS-compliant commercial-grade construction, while "HE3" specifies the AEC-Q101 qualified version - both share identical electrical and thermal specifications but differ in qualification scope and whisker resistance class.
How does BZW04-20BHE3/54 compare to unidirectional variants like BZW04-20HE3/54?
The BZW04-20BHE3/54 differs from unidirectional BZW04-20HE3/54 solely in polarity configuration: the "B" suffix designates bidirectional operation with symmetrical clamping, whereas the unidirectional version requires correct anode/cathode orientation and conducts only in reverse bias. Both share identical VWM (20.5 V), VBR (22.8–25.2 V), VC (33.2 V), and PPPM (400 W) ratings, but only the bidirectional variant supports AC or floating-line protection without polarity dependency.
What is the maximum junction temperature rating for BZW04-20BHE3/54?
The BZW04-20BHE3/54 has a maximum junction temperature (TJ max) of +175 °C, verified per the Vishay datasheet revision dated 16-Sep-2021. This rating enables reliable operation in high-temperature environments such as engine compartments, industrial motor drive cabinets, and enclosed power supplies - provided PCB thermal design maintains junction-to-ambient thermal resistance within derating limits shown in Figure 2 of the datasheet.
BZW04-20BHE3/54 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):
- 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)
BZW04-20BHE3/54 FAQ
1.How can I place an order for BZW04-20BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-20BHE3/54 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 BZW04-20BHE3/54 reliable?
The price and inventory of BZW04-20BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-20BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-20BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-20BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-20BHE3/54?
BZW04-20BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-20BHE3/54 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 BZW04-20BHE3/54?
For technical support, including BZW04-20BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-20BHE3/54 requirements.
6.How does Aetrix verify that BZW04-20BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-20BHE3/54 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 BZW04-20BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-20BHE3/54?
All BZW04-20BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-20BHE3/54, 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 BZW04-20BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-20BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-20BHE3/54 Tags
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