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Vishay General Semiconductor - Diodes Division BZW04P40BHE3/73
- Part No.:
- BZW04P40BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P40BHE3/73.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,305
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Product details
Overview
BZW04P40BHE3/73 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 40.2 V stand-off voltage (VWM), 64.8 V maximum clamping voltage (VC) at 6.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04P40BHE3/73 datasheet, BZW04P40BHE3/73 pinout, BZW04P40BHE3/73 application, or BZW04P40BHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package compatibility, bi-directional surge handling, and verified clamping performance under repetitive transients induced by inductive switching or ESD events.
Technical Context
This bi-directional TVS diode uses a glass passivated chip junction to achieve fast response time (<1 ns), low incremental surge resistance, and stable breakdown behavior across temperature. Its symmetrical I-V characteristics enable identical clamping in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Rated for 175 °C maximum junction temperature and compliant with JESD22-B102 solderability standards, the device supports high-reliability mounting in automotive under-hood and industrial control environments. The HE3 suffix confirms AEC-Q101 qualification and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - Maximum continuous reverse operating voltage before conduction; defines safe working margin below clamping threshold. |
| VC @ IPPM | 64.8 V at 6.2 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - Peak pulse power handling capability; sustains short-duration lightning or EFT surges without failure. |
| IPPM | 6.2 A - Peak pulse current supported with 10/1000 µs waveform; correlates directly to system-level surge test compliance. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in high-ambient environments like engine control units. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with 0.205" body diameter; compatible with legacy PCB layouts and wave soldering. |
| Qualification | AEC-Q101 qualified (HE3 suffix) - Validated for automotive electronics per stress-test requirements including temperature cycling, HTRB, and surge endurance. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads. Bi-directional construction means no cathode marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Bi-directional avalanche junction conducts equally in either polarity above VBR; no polarity-sensitive placement required on PCB. |
| Lead 1 / Lead 2 | Mounting interface | Matte tin-plated leads meet J-STD-002 solderability; 0.026" diameter supports mechanical retention in 0.031"–0.035" holes. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche breakdown with <0.1 % VBR drift over lifetime and temperature. |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events without degradation when properly heatsinked. |
| AEC-Q101 qualification (HE3) | Validated for automotive Grade 1 (-40 °C to +125 °C ambient) applications including body control modules and ADAS sensor interfaces. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in enclosed enclosures per safety-critical designs. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes let-through energy to protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces. |
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: Maintains signal integrity during 12 V/24 V vehicle electrical system disturbances while meeting AEC-Q101 reliability requirements. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers from inductive kickback and EFT bursts in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across each I/O terminal to shunt surge energy before it reaches isolation barriers or microcontrollers. Use Value: Enables >100,000 surge cycles without parameter shift, supporting long-life deployment in unattended industrial equipment. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Safeguarding Ethernet PHYs, DSL line drivers, and POTS interface circuits against lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to absorb common-mode transients before differential receivers. Use Value: Achieves IEC 61000-4-5 4 kV (line-earth) immunity with minimal capacitance impact (<100 pF at 0 V). |
Use Scenario: Adding secondary-side surge suppression on DC output rails of wall adapters used with USB peripherals and smart home devices. IC Role / Device Role / Timing Role: Low-leakage (1 µA max at VWM) bi-directional clamp preventing overvoltage damage during hot-plug or cable discharge events. Use Value: Complies with IEC 61000-4-2 Level 4 (15 kV air / 8 kV contact) without affecting no-load regulation or efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | Same VWM (40 V), higher VC (64.5 V), SMC package (surface-mount), 600 W PPPM. | Requires PCB rework for SMD layout; better suited for space-constrained consumer electronics vs. through-hole industrial designs. | Select SMBJ40CA only if board real estate is constrained and wave-soldering is not required. |
| P6KE40CA | Same VWM (40 V), same DO-204AL package, but lower PPPM (600 W), higher VC (69.4 V), commercial-grade (non-AEC-Q101). | Lacks automotive qualification and has 7 % higher clamping voltage - less effective for low-voltage rail protection. | Acceptable for cost-sensitive industrial applications where AEC-Q101 is not mandated and tighter clamping is not critical. |
Compared with SMBJ40CA and P6KE40CA, BZW04P40BHE3/73 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and optimized clamping (64.8 V) for robust protection in automotive and industrial systems requiring field-proven reliability and serviceability.
Availability
BZW04P40BHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for BZW04P40BHE3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade validation.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be eliminated.
FAQ
What is the clamping voltage of BZW04P40BHE3/73 under standard surge conditions?
The BZW04P40BHE3/73 exhibits a maximum clamping voltage (VC) of 64.8 V at 6.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test methodology and ensures downstream circuitry remains within safe operating limits during transient events. The clamping performance is guaranteed across the full operating temperature range of −55 °C to +175 °C.
Is BZW04P40BHE3/73 suitable for automotive applications?
Yes, BZW04P40BHE3/73 is AEC-Q101 qualified (confirmed by the HE3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. It meets stress tests for temperature cycling, high-temperature reverse bias, and surge endurance - validated for Grade 1 ambient operation (−40 °C to +125 °C).
What does the "B" suffix in BZW04P40BHE3/73 indicate?
The "B" suffix in BZW04P40BHE3/73 denotes bi-directional functionality - meaning the device provides symmetrical transient suppression in both forward and reverse polarities. Unlike uni-directional variants (e.g., BZW04P40HE3/73), it requires no polarity orientation during placement and is ideal for AC-coupled or floating signal lines.
How does the DO-204AL package of BZW04P40BHE3/73 affect thermal performance?
The DO-204AL (DO-41) package of BZW04P40BHE3/73 delivers 1.5 W power dissipation on an infinite heatsink at 75 °C lead temperature (TL). Its axial-leaded construction allows direct thermal coupling to copper pours or chassis ground, enabling effective heat spreading in through-hole mounted designs - especially important for repetitive surge duty cycles in industrial controls.
What is the maximum reverse leakage current of BZW04P40BHE3/73 at its stand-off voltage?
At its 40.2 V stand-off voltage (VWM), the BZW04P40BHE3/73 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This low leakage preserves signal integrity and minimizes standby power loss in battery-powered or high-impedance sensing circuits - critical for precision analog front-ends and always-on monitoring systems.
BZW04P40BHE3/73 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
BZW04P40BHE3/73 FAQ
1.How can I place an order for BZW04P40BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P40BHE3/73 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 BZW04P40BHE3/73 reliable?
The price and inventory of BZW04P40BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P40BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P40BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P40BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P40BHE3/73?
BZW04P40BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P40BHE3/73 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 BZW04P40BHE3/73?
For technical support, including BZW04P40BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P40BHE3/73 requirements.
6.How does Aetrix verify that BZW04P40BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P40BHE3/73 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 BZW04P40BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P40BHE3/73?
All BZW04P40BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P40BHE3/73, 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 BZW04P40BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P40BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P40BHE3/73 Tags
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