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Vishay General Semiconductor - Diodes Division BZW04P48BHE3/73
- Part No.:
- BZW04P48BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P48BHE3/73.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,604
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Product details
Overview
BZW04P48BHE3/73 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), 53.2–61.6 V breakdown voltage (VBR), 77.0 V clamping voltage (VC) at 5.2 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 BZW04P48BHE3/73 datasheet, BZW04P48BHE3/73 pinout, BZW04P48BHE3/73 application, or BZW04P48BHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional symmetry, low leakage (<1 µA at VWM), and verified clamping performance under repetitive surge stress.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM, it avalanches rapidly to clamp the line at ≤77.0 V, diverting up to 5.2 A (10/1000 µs) away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for bi-directional operation, BZW04P48BHE3/73 exhibits identical electrical characteristics in both polarities - no cathode marking, symmetric VBR min/max (53.2–61.6 V), and matched clamping behavior - making it suitable for AC-coupled or floating signal paths where polarity reversal is possible.
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 |
| VBR @ IT=1 mA | 53.2–61.6 V - guaranteed avalanche onset range; ensures reliable triggering across temperature and unit variation |
| VC @ IPPM=5.2 A | 77.0 V - maximum voltage seen by protected circuit during full-rated 10/1000 µs surge; critical for IC-level survivability |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform at 0.01% duty cycle; supports repeated ESD/lightning surges |
| IPPM | 5.2 A - peak pulse current capability; determines minimum series impedance required for effective clamping |
| TJ max | 175 °C - maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments |
| Leakage @ VWM | <1 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in always-on circuits |
Pinout & Package
Package: DO-204AL (DO-41), 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 / Cathode (unmarked) | Bi-directional terminal pair | No polarity marking; terminals are functionally identical - either end may connect to line or ground; symmetrical conduction in both directions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 3 (1 kV surge) and ISO 7637-2 Pulse 1/2a/3a without degradation |
| Low clamping ratio (VC/VBR ≈ 1.25) | Minimizes let-through energy during clamping - critical for protecting 5 V and 3.3 V logic rails and analog front-ends |
| RoHS-compliant, HE3 suffix | Meets JESD201 Class 2 whisker resistance; certified for automotive-grade reliability and lead-free assembly compatibility |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and chassis ground; responds within <1 ns to limit voltage excursion during fast-rising surges. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (load dump) by clamping to ≤77.0 V, preventing latch-up or damage to 5 V tolerant receivers. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each input line; operates in parallel with optocoupler input stage to absorb surge energy before isolation barrier. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements without adding external filtering components. |
| Telecom Line Interface | Consumer Power Adapter Feedback Loop |
Use Scenario: Protecting Ethernet PHY magnetics center taps and RS-485 transceiver pins against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential pairs or between line and ground; leverages symmetric response to handle polarity-reversing transients. Use Value: Provides repeatable 400 W surge handling per line without derating, supporting multi-port surge protection designs with minimal footprint. |
Use Scenario: Clamping feedback voltage node in isolated AC/DC adapters using TL431-based regulation to prevent false triggering during mains transients. IC Role / Device Role / Timing Role: Precision voltage clamp referenced to VWM = 47.8 V; holds feedback rail within ±5% tolerance during 10/1000 µs surges. Use Value: Eliminates output overvoltage shutdown events caused by transient coupling into optocoupler feedback path, improving system uptime. |
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 PPPM (600 W), SMC package (larger footprint, lower thermal resistance) | Better suited for higher-energy surges but requires PCB rework due to different outline and mounting | Select when surge energy exceeds 400 W or board layout allows SMC footprint |
| 1.5KE48CA | Same VWM (48 V), same DO-204AL package, but lower PPPM (1500 W peak) and higher VC (77.0 V vs. 77.0 V - identical here; note 1.5KE48CA has VC = 77.0 V at 19.4 A) | Higher peak current rating but less precise clamping at lower currents; legacy through-hole alternative | Choose only if legacy BOM alignment or cost sensitivity outweighs AEC-Q101 qualification requirement |
Compared with SMBJ48CA and 1.5KE48CA, BZW04P48BHE3/73 offers AEC-Q101 qualification and optimized low-current clamping performance in a compact DO-41 form factor - making it the preferred choice for new automotive and space-constrained industrial designs requiring validated reliability.
Availability
BZW04P48BHE3/73 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line interface applications requiring stable component supply, AEC-Q101 compliance, and repeatable 400 W transient suppression.
Supply support for BZW04P48BHE3/73 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 is part of Vishay's TransZorb® TVS platform engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be rigorously controlled.
FAQ
What is the clamping voltage of BZW04P48BHE3/73 and how is it measured?
The clamping voltage (VC) of BZW04P48BHE3/73 is 77.0 V, measured at a peak pulse current (IPPM) of 5.2 A with a 10/1000 µs waveform per IEC 61000-4-5. This value represents the maximum voltage imposed on the protected circuit during full-rated surge conditions and is confirmed across production lots per Vishay Document 88316.
Is BZW04P48BHE3/73 suitable for automotive applications?
Yes, BZW04P48BHE3/73 is AEC-Q101 qualified (HE3 suffix), tested for temperature cycling, humidity, mechanical shock, and surge endurance per automotive stress requirements. It is widely used in engine control units, body control modules, and ADAS sensor interfaces where robust transient immunity is mandated.
How does the bi-directional design of BZW04P48BHE3/73 affect its circuit placement?
The bi-directional design of BZW04P48BHE3/73 eliminates polarity concerns: it functions identically regardless of orientation on the PCB. This simplifies layout in AC-coupled or floating signal paths - such as RS-485 differential pairs or transformer-coupled Ethernet - and avoids misorientation risk during manual assembly.
What is the maximum operating temperature for BZW04P48BHE3/73?
BZW04P48BHE3/73 has a maximum junction temperature (TJ) of 175 °C and an operating junction/storage temperature range of –55 °C to +175 °C. This rating supports deployment in under-hood automotive locations, industrial motor drives, and other high-ambient environments without thermal derating penalties.
Does BZW04P48BHE3/73 require a heatsink for standard operation?
No, BZW04P48BHE3/73 does not require a heatsink for transient suppression duty cycles (e.g., IEC 61000-4-5 surges at 0.01% duty). Its 1.5 W steady-state power dissipation (PD) is managed via ambient convection in DO-204AL packaging; heatsinking is only needed for sustained DC overvoltage fault conditions beyond normal operation.
BZW04P48BHE3/73 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):
- 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)
BZW04P48BHE3/73 FAQ
1.How can I place an order for BZW04P48BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P48BHE3/73 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 BZW04P48BHE3/73 reliable?
The price and inventory of BZW04P48BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P48BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P48BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P48BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P48BHE3/73?
BZW04P48BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P48BHE3/73 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 BZW04P48BHE3/73?
For technical support, including BZW04P48BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P48BHE3/73 requirements.
6.How does Aetrix verify that BZW04P48BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P48BHE3/73 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 BZW04P48BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P48BHE3/73?
All BZW04P48BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P48BHE3/73, 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 BZW04P48BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P48BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P48BHE3/73 Tags
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