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Vishay General Semiconductor - Diodes Division BZW04P48B-E3/73
- Part No.:
- BZW04P48B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P48B-E3/73.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P48B-E3/73 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 capability with a 10/1000 μs waveform - suitable for protecting MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching transients.
For engineers reviewing the BZW04P48B-E3/73 datasheet, BZW04P48B-E3/73 pinout, BZW04P48B-E3/73 application, or BZW04P48B-E3/73 equivalent, key selection criteria include its DO-204AL (DO-41) axial package, bi-directional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages exceeding its VWM. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low incremental surge resistance, enabling precise clamping without thermal runaway during repetitive 10/1000 μs pulses.
The bi-directional configuration eliminates polarity sensitivity, making it ideal for AC-coupled or floating signal paths. Its 175 °C maximum junction temperature and derating curve (Fig. 2) support reliable operation in automotive under-hood and industrial control environments where ambient temperatures exceed 85 °C.
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 breakdown. |
| VBR (min/max) | 53.2 V / 61.6 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on across production lots and temperature. |
| VC @ IPPM | 77.0 V at 5.2 A - Clamping voltage under standardized 10/1000 μs surge; limits downstream voltage stress to protected ICs. |
| PPPM | 400 W - Peak pulse power handling per single 10/1000 μs event; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | 1.0 μA - Reverse leakage at stand-off voltage; ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max. | 175 °C - Maximum junction temperature; enables use in high-temperature environments without derating penalties beyond datasheet curves. |
| Package | DO-204AL (DO-41) - Axial-leaded, UL 94 V-0 molded epoxy package with 0.205" body diameter; compatible with wave soldering (275 °C, 10 s). |
Pinout & Package
DO-204AL (DO-41) axial package: two unmarked leads; bi-directional symmetry means no cathode/anode distinction - either lead may connect to line or ground. Leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102, and meet JESD201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (interchangeable) | Bi-directional transient shunt path | Both terminals function identically; connects across protected line-to-line or line-to-ground to clamp bidirectional surges. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling per AEC-Q101 stress tests. |
| 400 W peak pulse power (10/1000 μs) | Validated clamping performance for IEC 61000-4-5 surge immunity up to 4 kV (open-circuit) in industrial and automotive systems. |
| AEC-Q101 qualified | Qualified for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| RoHS-compliant, matte tin plating | Enables lead-free assembly compatibility and eliminates whisker risk in high-reliability PCBs per JESD201 Class 1A. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot during fast transients, reducing stress on downstream CMOS inputs and analog front-ends. |
Applications
| Industrial Sensor Protection | Automotive Power Line Clamp |
|---|---|
Use Scenario: Protecting 24 V CAN bus transceivers and LIN nodes from load dump and ISO 7637-2 pulse 5a/b. IC Role / Device Role / Timing Role: Bi-directional shunt clamp placed between VCC and GND near connector entry point. Use Value: Limits voltage excursion to ≤77.0 V during 100 ms load dump events, preventing latch-up or gate oxide damage in transceiver ICs. |
Use Scenario: Safeguarding microcontroller I/O pins connected to external switches or relays in body control modules. IC Role / Device Role / Timing Role: Line-to-ground TVS on each switch input to absorb inductive kickback from 12 V solenoids. Use Value: Sub-100 ns response time clamps 600 V transients to 77.0 V, preserving GPIO ESD rating and logic state integrity. |
| Telecom Interface Surge Guard | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding RS-485 transceivers in building automation controllers from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Differential-mode clamp across A/B lines and common-mode clamp from A/B to GND. Use Value: 400 W pulse rating sustains multiple 10/1000 μs surges per IEC 61000-4-5, maintaining data link integrity during storm conditions. |
Use Scenario: Suppressing commutation spikes from universal motor brushes in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across motor terminals to clamp flyback energy into DC bus capacitors. Use Value: 175 °C TJ max and 1.5 W steady-state dissipation allow continuous operation in enclosed, thermally constrained enclosures. |
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 600 W PPPM but higher capacitance (~150 pF). | Better suited for lower-energy, higher-frequency ESD (IEC 61000-4-2); less optimal for high-current 10/1000 μs surges. | Select SMBJ48CA only if board space requires SMD mounting and surge energy remains ≤300 W. |
| P6KE48CA | DO-15 package; identical 48 V VWM and 77 V VC, but 600 W PPPM and higher IFSM (100 A); larger footprint and higher leakage (5 μA). | Preferred for legacy through-hole designs requiring higher single-pulse robustness and compatibility with older P6KE footprints. | Choose P6KE48CA when upgrading existing P6KE-based designs needing ≥600 W surge margin without layout change. |
Compared with BZW04P48B-E3/73, SMBJ48CA offers surface-mount convenience at the cost of lower surge endurance and higher parasitic capacitance, while P6KE48CA delivers greater pulse power headroom in a larger axial package - making BZW04P48B-E3/73 the optimal balance of compact DO-41 form factor, AEC-Q101 qualification, and verified 400 W IEC 61000-4-5 compliance.
Availability
BZW04P48B-E3/73 is available at Aetrix Electronics and suitable for industrial sensor protection, automotive power line clamping, and telecom interface surge guard applications requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for BZW04P48B-E3/73 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for robust, bi-directional transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without adding complexity.
FAQ
What is the clamping voltage of BZW04P48B-E3/73 under a 10/1000 μs surge?
The BZW04P48B-E3/73 clamps to a maximum of 77.0 V at 5.2 A peak pulse current (IPPM) when subjected to a standardized 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 in Vishay Document 88316 and reflects worst-case performance across temperature and process variation - critical for validating voltage margins in protected ICs like CAN transceivers or microcontroller I/Os.
Is BZW04P48B-E3/73 suitable for automotive applications?
Yes, BZW04P48B-E3/73 is AEC-Q101 qualified (HE3 suffix variants are explicitly rated for automotive use). Its 175 °C maximum junction temperature, glass-passivated junction, and validated performance under repetitive surge stress make it appropriate for engine control units, body electronics, and ADAS sensor interfaces - provided layout follows Vishay's recommended pad geometry and thermal relief guidelines.
How does the bi-directional design of BZW04P48B-E3/73 affect circuit placement?
The bi-directional nature of BZW04P48B-E3/73 eliminates polarity concerns: either lead can connect to line or ground. This simplifies layout in AC-coupled paths (e.g., RS-485 differential pairs) or floating sensor outputs, avoiding orientation errors during assembly and enabling symmetric placement across differential signals without additional routing constraints.
What is the maximum reverse leakage current for BZW04P48B-E3/73 at its stand-off voltage?
At its 47.8 V stand-off voltage (VWM), BZW04P48B-E3/73 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This low leakage preserves signal integrity in high-impedance sensor bias networks and minimizes standby power draw in battery-operated equipment - confirmed per Table 1 of Vishay Document 88316.
Can BZW04P48B-E3/73 be used in place of a unidirectional TVS diode?
No - BZW04P48B-E3/73 is strictly bi-directional and lacks anode/cathode marking. It must not replace unidirectional TVS diodes (e.g., BZW04P48-E3/73) in DC-biased circuits where forward conduction must be blocked. Using it in such roles risks unintended conduction during normal operation, leading to excessive current draw or thermal failure.
BZW04P48B-E3/73 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:
- 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-E3/73 FAQ
1.How can I place an order for BZW04P48B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P48B-E3/73 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 BZW04P48B-E3/73 reliable?
The price and inventory of BZW04P48B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P48B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P48B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P48B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P48B-E3/73?
BZW04P48B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P48B-E3/73 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 BZW04P48B-E3/73?
For technical support, including BZW04P48B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P48B-E3/73 requirements.
6.How does Aetrix verify that BZW04P48B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P48B-E3/73 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 BZW04P48B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P48B-E3/73?
All BZW04P48B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P48B-E3/73, 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 BZW04P48B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P48B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P48B-E3/73 Tags
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