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Vishay General Semiconductor - Diodes Division BZW04-48HE3/54
- Part No.:
- BZW04-48HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-48HE3/54.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,039
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Product details
Overview
BZW04-48HE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features a 47.8 V stand-off voltage (VWM), 53.2–58.8 V breakdown voltage (VBR), and clamps transients up to 77.0 V at 5.2 A peak pulse current (IPPM) under 10/1000 μs waveform - ideal for safeguarding automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the BZW04-48HE3/54 datasheet, BZW04-48HE3/54 pinout, BZW04-48HE3/54 application, or BZW04-48HE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bidirectional surge suppression with 400 W peak pulse power, low leakage (<1.0 μA at VWM), and stable temperature coefficient (0.103 %/°C), supporting design-in for automotive-grade reliability and ESD/transient immunity validation.
Technical Context
This device operates as a voltage-clamping bidirectional TVS, leveraging glass-passivated junction technology to deliver fast response time and low incremental surge resistance. Its symmetrical breakdown behavior ensures identical clamping performance in both polarities, enabling direct placement across AC-coupled or floating signal paths without polarity concerns.
The BZW04-48HE3/54 is rated for 400 W peak pulse power (10/1000 μs), derated above 25 °C per JEDEC JESD22-A104, and supports continuous power dissipation of 1.5 W on an infinite heatsink at 75 °C. Junction temperature range spans −55 °C to +175 °C, meeting automotive under-hood thermal requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 47.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 48 V nominal systems. |
| VBR (min/max) | 53.2 V / 58.8 V - Breakdown occurs within this range at 1 mA test current; ensures predictable clamping onset across production lot. |
| VC @ IPPM | 77.0 V - Clamped voltage during 5.2 A transient; determines maximum stress imposed on protected downstream circuitry. |
| IPPM | 5.2 A - Peak pulse current survivable under 10/1000 μs waveform; quantifies surge energy handling capability. |
| PPPM | 400 W - Peak pulse power rating; enables protection against IEC 61000-4-5 Level 4 surges when properly applied. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in high-ambient automotive engine control units. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; no polarity marking - bidirectional configuration confirmed by "B" suffix omission in part number and specification table inclusion under unidirectional/bidirectional family documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band marking required - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable long-term leakage performance and resistance to humidity-induced degradation in harsh environments. |
| 400 W peak pulse power (10/1000 μs) | Supports compliance with IEC 61000-4-5 surge immunity testing up to Level 4 (4 kV line-to-line, 2 kV line-to-ground). |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulses), improving protection fidelity. |
| UL 94 V-0 molding compound | Ensures flame-retardant encapsulation suitable for safety-critical industrial and transportation equipment. |
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 inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface or IC input pins to limit transient excursions below absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 5 V/12 V sensor front-ends while maintaining signal integrity during 10/1000 μs surges up to 400 W. |
Use Scenario: Safeguarding digital and analog I/O channels of programmable logic controllers exposed to relay coil flyback, motor drive noise, and field wiring surges. IC Role / Device Role / Timing Role: Standoff-level TVS deployed across isolated signal lines (e.g., 24 V DC inputs) to shunt induced transients before reaching optocouplers or microcontrollers. Use Value: Enables reliable operation in factory automation environments where repetitive 400 W surges occur without degradation over >100,000 events. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Secondary-side transient suppression on low-voltage telecom power rails (e.g., 48 V PoE auxiliary supplies) subject to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed after DC-DC converter output to protect downstream PMICs and communication ICs. Use Value: Limits clamped voltage to 77.0 V during 5.2 A transients, ensuring compatibility with 100 V-rated MOSFETs and LDOs in telecom infrastructure. |
Use Scenario: Input-stage ESD and surge protection for USB-C PD adapters and multi-port chargers handling variable AC/DC conversion outputs. IC Role / Device Role / Timing Role: Primary overvoltage guard on secondary-side 5–20 V output rails, absorbing contact discharge (IEC 61000-4-2) and conducted surges. Use Value: Maintains <1.0 μA leakage at 47.8 V, minimizing standby power loss while delivering 77.0 V clamping for ±8 kV ESD events. |
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 | DO-214AA package (SMB), 48 V VWM, 70 V VC @ 5.7 A, same 400 W PPPM | Surface-mount footprint; lower profile but requires reflow-compatible layout and lacks axial lead mechanical robustness. | Select SMBJ48CA for space-constrained PCBs where automated assembly and board density outweigh axial mounting advantages. |
| 1.5KE48CA | DO-201AD package, 48 V VWM, 77 V VC @ 5.2 A, 1500 W PPPM, higher IFSM (100 A) | Higher surge capacity and ruggedness for infrequent high-energy events; larger size and higher cost per unit. | Choose 1.5KE48CA when protecting against rare but extreme transients (e.g., utility grid coupling) where 1500 W headroom justifies footprint and cost premium. |
Compared with SMBJ48CA, BZW04-48HE3/54 offers axial-leaded mechanical stability and AEC-Q101 qualification out-of-box, while 1.5KE48CA provides triple the peak power rating at the expense of size and qualification scope - making BZW04-48HE3/54 optimal for cost-sensitive, high-reliability automotive and industrial designs requiring proven qualification and ease of through-hole assembly.
Availability
BZW04-48HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for BZW04-48HE3/54 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for bidirectional transient suppression in harsh environments where AEC-Q101 qualification, stable clamping, and long-term reliability are mandatory.
FAQ
What does the "HE3/54" suffix indicate in BZW04-48HE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance; "/54" specifies packaging in 13-inch paper tape and reel with 550 units per reel. This confirms BZW04-48HE3/54 meets automotive reliability standards and is optimized for automated SMT placement despite its axial DO-41 form factor.
Is BZW04-48HE3/54 unidirectional or bidirectional?
BZW04-48HE3/54 is a bidirectional TVS diode, as confirmed by its inclusion in the bidirectional section of the Vishay datasheet (Document Number 88316) and absence of cathode band marking. Its electrical characteristics - including symmetric VBR, VC, and IPPM - apply identically in both directions, enabling use across AC signals or floating nodes without polarity constraints.
What is the maximum clamping voltage of BZW04-48HE3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-48HE3/54 is 77.0 V at 5.2 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring downstream ICs remain within safe operating margins.
Does BZW04-48HE3/54 meet automotive qualification standards?
Yes, BZW04-48HE3/54 is explicitly AEC-Q101 qualified, as stated in the Vishay datasheet revision 16-Sep-2021 (Document Number 88316), Note (1) under Ratings and Characteristics Curves. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive powertrain, chassis, and body electronics applications.
How does the thermal performance of BZW04-48HE3/54 support high-ambient designs?
BZW04-48HE3/54 operates across a junction temperature range of −55 °C to +175 °C and is rated for 1.5 W power dissipation on an infinite heatsink at 75 °C. Its thermal derating curve (Fig. 2 in datasheet 88316) allows engineers to calculate usable power at elevated ambient temperatures - critical for under-hood automotive modules where sustained 125 °C ambient is common.
BZW04-48HE3/54 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):
- 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)
BZW04-48HE3/54 FAQ
1.How can I place an order for BZW04-48HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-48HE3/54 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 BZW04-48HE3/54 reliable?
The price and inventory of BZW04-48HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-48HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-48HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-48HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-48HE3/54?
BZW04-48HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-48HE3/54 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 BZW04-48HE3/54?
For technical support, including BZW04-48HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-48HE3/54 requirements.
6.How does Aetrix verify that BZW04-48HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-48HE3/54 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 BZW04-48HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-48HE3/54?
All BZW04-48HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-48HE3/54, 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 BZW04-48HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-48HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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