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Vishay General Semiconductor - Diodes Division BZW04P48HE3/73
- Part No.:
- BZW04P48HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P48HE3/73.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
BZW04P48HE3/73 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 47.8 V stand-off voltage (VWM), 77.0 V clamping voltage (VC) at 5.2 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04P48HE3/73 datasheet, BZW04P48HE3/73 pinout, BZW04P48HE3/73 application, or BZW04P48HE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional symmetry, low leakage (<1 μA at VWM), and temperature coefficient of breakdown voltage (0.103 %/°C).
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the 10/1000 μs surge rating reflects standardized lightning and switching transient immunity per ANSI/IEEE C62.35.
The device is rated for continuous operation from –55 °C to +175 °C junction temperature and supports repetitive surge events at ≤0.01 % duty cycle. Its 1.5 W steady-state power dissipation (PD) and 0.67 A maximum reverse leakage at 47.8 V (ID) define thermal and leakage boundaries for sustained bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 47.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VC @ IPPM | 77.0 V at 5.2 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's peak stress level. |
| PPPM | 400 W - Peak pulse power handling capability; validates immunity to IEC 61000-4-5 Level 3/4 surges. |
| TJ max. | +175 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with matte tin-plated leads, UL 94 V-0 molding compound. |
| ID @ VWM | <1.0 μA - Reverse leakage current at stand-off voltage; ensures minimal standby power loss in always-on circuits. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical epoxy-molded case with no polarity marking (bi-directional). Leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102; meets JESD 201 class 2 whisker test (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either lead serves as input/output for bidirectional surge suppression. |
| Case (body) | Non-electrical mechanical interface | UL 94 V-0 rated epoxy body provides flame resistance and mechanical protection; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Identical VBR min/max (53.2–61.6 V) and VC (77.0 V) in both directions - eliminates polarity concerns in AC-coupled or floating lines. |
| Glass-passivated junction | Stable, repeatable breakdown characteristics across temperature and lifetime - critical for AEC-Q101 automotive qualification. |
| 400 W 10/1000 μs pulse rating | Validates protection against induced transients from inductive load switching (e.g., solenoids, relays) per ISO 7637-2 Pulse 1/2a/3a. |
| Low incremental surge resistance | Enables tight VC–VWM differential (ΔV = 29.2 V) - minimizes overvoltage overshoot during fast-rising transients. |
| RoHS-compliant & whisker-tested | HE3 suffix denotes AEC-Q101 qualification and JESD 201 class 2 whisker resistance - required for automotive PCB assembly. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and MEMS pressure/temperature sensors from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential signal pair or supply rail to shunt transient energy before IC damage occurs. Use Value: Withstands 400 W surges and operates up to +175 °C, enabling direct placement near under-hood sensors without derating. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between signal line and ground to limit voltage excursion during 2 kV EFT bursts. Use Value: 47.8 V VWM aligns with 24 V system rails; 77.0 V VC ensures downstream op-amps remain within absolute maximum ratings. |
| Telecom Line Interface | Consumer Power Adapter Feedback Path |
Use Scenario: Shielding Ethernet PHY magnetics and POTS line drivers from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to absorb bulk surge energy before reaching isolation barrier. Use Value: 400 W PPPM and DO-41 mechanical robustness support IEC 61000-4-5 4 kV/2 Ω combination wave compliance. |
Use Scenario: Securing optocoupler feedback paths in isolated AC/DC adapters against coupling noise from primary-side MOSFET switching. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp across secondary-side error amplifier inputs to suppress common-mode spikes. Use Value: Sub-1 μA leakage at 47.8 V prevents DC bias shift; fast response preserves regulation loop stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | Same VWM (48 V), higher VC (77.4 V), SMC package (surface-mount), 600 W PPPM | Requires PCB rework for SMD layout; better suited for space-constrained, high-volume consumer designs | Select SMBJ48CA when board space is limited and automated assembly is preferred over through-hole. |
| P6KE48CA | Same VWM (48.0 V), identical DO-15 package, lower PPPM (600 W), higher VC (75.0 V), commercial grade only | Lacks AEC-Q101 qualification and HE3 whisker rating; not approved for automotive under-hood use | Choose P6KE48CA for cost-sensitive industrial controls where automotive qualification is unnecessary. |
Compared with BZW04P48HE3/73, SMBJ48CA offers higher surge capacity in a smaller footprint but requires layout change, while P6KE48CA matches form factor and cost but omits automotive reliability validation - making BZW04P48HE3/73 the sole option meeting AEC-Q101 + DO-41 + 400 W requirements.
Availability
BZW04P48HE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial I/O protection, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZW04P48HE3/73 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and communications systems demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the clamping voltage of BZW04P48HE3/73 under a 10/1000 μs surge?
The BZW04P48HE3/73 clamps to a maximum of 77.0 V when subjected to its rated 5.2 A peak pulse current (IPPM) using the standardized 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88316, Rev. 12-Jul-11) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is BZW04P48HE3/73 suitable for automotive applications?
Yes, BZW04P48HE3/73 is AEC-Q101 qualified and carries the HE3 suffix, indicating compliance with automotive reliability testing including temperature cycling, high-temperature reverse bias, and whisker resistance (JESD 201 Class 2). Its –55 °C to +175 °C operating range and DO-41 mechanical robustness make it appropriate for engine control, body electronics, and ADAS sensor protection.
How does the bi-directional nature of BZW04P48HE3/73 affect circuit design?
The bi-directional configuration of BZW04P48HE3/73 means both terminals are functionally identical - no cathode marking or polarity orientation is required during placement. This simplifies layout on AC-coupled lines, differential buses (e.g., RS-485), or floating grounds, eliminating risk of reverse installation and ensuring symmetrical protection regardless of transient polarity.
What is the maximum reverse leakage current for BZW04P48HE3/73 at its stand-off voltage?
At its 47.8 V stand-off voltage (VWM) and TA = 25 °C, the BZW04P48HE3/73 exhibits a maximum reverse leakage current (ID) of 1.0 μA. This low leakage ensures minimal power loss in always-on monitoring circuits and avoids loading sensitive analog front-ends or feedback networks in precision power supplies.
Does BZW04P48HE3/73 require heatsinking for continuous operation?
No external heatsink is required for BZW04P48HE3/73 under normal steady-state conditions. Its 1.5 W power dissipation rating (PD) is specified for operation on an infinite heatsink at TL = 75 °C, and typical applications involve only transient conduction. Continuous DC bias above ~1 mA would exceed thermal limits - the device is intended for surge-only clamping, not steady-state regulation.
BZW04P48HE3/73 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
BZW04P48HE3/73 FAQ
1.How can I place an order for BZW04P48HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P48HE3/73 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 BZW04P48HE3/73 reliable?
The price and inventory of BZW04P48HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P48HE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P48HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P48HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P48HE3/73?
BZW04P48HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P48HE3/73 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 BZW04P48HE3/73?
For technical support, including BZW04P48HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P48HE3/73 requirements.
6.How does Aetrix verify that BZW04P48HE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P48HE3/73 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 BZW04P48HE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P48HE3/73?
All BZW04P48HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P48HE3/73, 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 BZW04P48HE3/73 part is unused and in its original packaging.
Return procedure for BZW04P48HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P48HE3/73 Tags
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