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Vishay General Semiconductor - Diodes Division BZW04P48B-E3/54
- Part No.:
- BZW04P48B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P48B-E3/54.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,102
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Product details
Overview
BZW04P48B-E3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection on 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 BZW04P48B-E3/54 datasheet, BZW04P48B-E3/54 pinout, BZW04P48B-E3/54 application, or BZW04P48B-E3/54 equivalent, key selection criteria include its DO-204AL (DO-41) axial package, bi-directional symmetry, AEC-Q101 qualification, low 1.0 μA max reverse leakage at VWM, and temperature coefficient of 0.103 %/°C - critical for stable clamping in wide-temperature automotive and industrial environments.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling single-device protection against positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the 10/1000 μs pulse rating reflects standardized lightning/surge immunity testing per ANSI/IEEE C62.35.
The device is rated for continuous operation from –55 °C to +175 °C junction temperature, with thermal derating above 25 °C ambient and power dissipation limited to 1.5 W on an infinite heatsink at 75 °C lead temperature. It meets JESD22-B106 solderability (275 °C, 10 s) and JESD201 Class 1A whisker resistance (E3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 47.8 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin below clamping threshold. |
| VBR (min/max) | 53.2 V / 61.6 V at 1 mA - guaranteed breakdown onset range; ensures predictable turn-on during fast transients. |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage under 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - peak pulse power handling capability; supports IEC 61000-4-5 Level 4 surge immunity (4 kV/2 Ω). |
| ID @ VWM | 1.0 μA max - ultra-low leakage at stand-off voltage; preserves signal integrity and minimizes standby power loss. |
| TJ max. | +175 °C - extended junction temperature rating; enables use in under-hood automotive and high-ambient industrial locations. |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package with UL 94 V-0 molded epoxy; compatible with through-hole assembly and manual repair. |
Pinout & Package
DO-204AL (DO-41) axial package: hermetically sealed glass-passivated chip in molded epoxy housing, matte tin-plated leads, 0.205" ±0.005" (5.2 mm) body diameter, 1.0" minimum overall length, RoHS-compliant (E3 suffix), AEC-Q101 qualified (HE3 variant available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional terminal pair | No polarity marking; identical electrical behavior in either direction - eliminates orientation errors during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating lines (e.g., RS-485, CAN, sensor bridges) without external polarity management. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control, ADAS, and body electronics. |
| 400 W 10/1000 μs rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom infrastructure applications up to Level 4. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature, low dynamic impedance, and repeatable clamping performance across 1000+ surge events. |
| UL 94 V-0 molding compound | Provides flame-retardant mechanical encapsulation essential for safety-critical end equipment compliance (IEC 62368, UL 62368). |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and throttle position sensors from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Standby-mode voltage clamp placed directly across sensor output pins to shunt >100 V spikes before they reach analog front-end or microcontroller inputs. Use Value: Prevents sensor signal corruption and MCU reset events during cranking or alternator regulation faults - validated per ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLC backplanes exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Bi-directional transient suppressor connected between A/B differential lines and ground, absorbing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Maintains bus communication integrity during maintenance hot-plug operations and reduces field failure rates linked to transient-induced data corruption. |
| Telecom Line Card Surge Suppression | Power Supply Input Clamping |
Use Scenario: Front-end protection of DSL/FTTH line cards against lightning-induced surges entering via twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection circuit, placed upstream of gas discharge tube (GDT) and series impedance. Use Value: Limits let-through voltage to <100 V during 10/1000 μs 4 kV surges (IEC 61000-4-5), preserving downstream GDT triggering margin and transceiver survival. |
Use Scenario: Secondary overvoltage clamp on 48 V DC input rails of PoE-powered switches and wireless access points. IC Role / Device Role / Timing Role: Fast-response shunt device triggered by DC overvoltage events (e.g., regulator fault, hot-swap inrush overshoot) exceeding 55 V. Use Value: Activates within <1 ns to clamp rail to ≤77 V, preventing damage to 60 V-rated MOSFETs and PMICs without affecting normal 48 V operation. |
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 DO-214AA package; 48 V VWM, 70 V VC @ 5.7 A; lower PPPM (600 W vs. 400 W), higher capacitance (~150 pF vs. ~50 pF). | Better suited for PCB space-constrained designs but less optimal for high-frequency signal lines due to higher junction capacitance. | Select SMBJ48CA only when board layout favors SMD and signal bandwidth <10 MHz; BZW04P48B-E3/54 preferred for through-hole reliability and low-C protection of analog sensors. |
| P6KE48CA | DO-15 package; identical 48 V VWM and 77 V VC, but lower surge rating (600 W vs. 400 W), wider VBR tolerance (45.6–50.4 V), and no AEC-Q101 qualification. | Acceptable for commercial-grade power supply inputs but not certified for automotive deployment or mission-critical industrial control. | Choose P6KE48CA for cost-sensitive consumer power adapters; BZW04P48B-E3/54 remains mandatory where AEC-Q101 compliance, tighter VBR, and proven automotive lifecycle are required. |
Compared with SMBJ48CA and P6KE48CA, BZW04P48B-E3/54 delivers superior automotive qualification, tighter breakdown voltage control (±7.5 % vs. ±10 %), lower leakage (<1 μA vs. <5 μA), and optimized thermal performance in axial through-hole mounting - making it the preferred choice for high-reliability, temperature-stressed, and safety-certified applications.
Availability
BZW04P48B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom line card surge protection, and 48 V DC power supply clamping requiring stable component supply across long production lifecycles.
Supply support for BZW04P48B-E3/54 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P48B-E3/54 belongs to the TransZorb® family of TVS diodes engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness and certification compliance are non-negotiable.
FAQ
What is the maximum clamping voltage of the BZW04P48B-E3/54 under surge conditions?
The BZW04P48B-E3/54 exhibits a maximum clamping voltage (VC) of 77.0 V when subjected to its rated 5.2 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream circuit protection design - ensuring connected ICs experience no more than 77 V during standardized surge events.
Is the BZW04P48B-E3/54 suitable for automotive applications?
Yes, the BZW04P48B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its –55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validation across temperature cycling, high-temperature reverse bias, and surge endurance tests confirm suitability for engine control units, ADAS sensors, and body electronics per ISO/TS 16949 requirements.
Does the BZW04P48B-E3/54 have polarity markings?
No, the BZW04P48B-E3/54 is a bi-directional TVS diode and carries no polarity marking on its DO-204AL (DO-41) package. Its symmetrical construction allows installation in either orientation - a key advantage for protecting AC-coupled or floating differential lines such as CAN, RS-485, or bridge sensor outputs without risk of incorrect placement.
What is the reverse leakage current specification for the BZW04P48B-E3/54 at its stand-off voltage?
The BZW04P48B-E3/54 specifies a maximum reverse leakage current (ID) of 1.0 μA at its 47.8 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal impact on high-impedance sensor circuits and preserves battery life in always-on automotive modules where quiescent current budgets are tightly constrained.
Can the BZW04P48B-E3/54 be used in place of a unidirectional TVS diode?
No - the BZW04P48B-E3/54 is strictly bi-directional and must not replace a unidirectional TVS in DC-biased circuits (e.g., 5 V logic rail protection), where cathode-anode polarity is essential. Using it in such configurations risks forward conduction during normal operation. Always verify circuit topology: BZW04P48B-E3/54 is intended for AC, floating, or dual-rail protection where bidirectional clamping is required.
BZW04P48B-E3/54 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P48B-E3/54 FAQ
1.How can I place an order for BZW04P48B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P48B-E3/54 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 BZW04P48B-E3/54 reliable?
The price and inventory of BZW04P48B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P48B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P48B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P48B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P48B-E3/54?
BZW04P48B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P48B-E3/54 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 BZW04P48B-E3/54?
For technical support, including BZW04P48B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P48B-E3/54 requirements.
6.How does Aetrix verify that BZW04P48B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P48B-E3/54 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 BZW04P48B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P48B-E3/54?
All BZW04P48B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P48B-E3/54, 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 BZW04P48B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P48B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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