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Vishay General Semiconductor - Diodes Division BZW04P239B-E3/54
- Part No.:
- BZW04P239B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P239B-E3/54.pdf
- Description:
- TVS DIODE 239VWM 384VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P239B-E3/54 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 239 V standoff voltage (VWM), 384 A peak pulse current (IPPM) under 10/1000 µs waveform, 384 V clamping voltage (VC), 400 W peak pulse power rating, and AEC-Q101 qualification - making it suitable for automotive power rail and industrial sensor interface protection.
For engineers reviewing the BZW04P239B-E3/54 datasheet, BZW04P239B-E3/54 pinout, BZW04P239B-E3/54 application, or BZW04P239B-E3/54 equivalent, key selection criteria include its bi-directional clamping behavior, DO-204AL (DO-41) through-hole package, 1.0 mA test current for breakdown verification, 1.1 A maximum reverse leakage at VWM, and temperature coefficient of 0.110 %/°C for stable performance across automotive thermal ranges.
Technical Context
This device operates as a voltage-clamped shunt protector: when transient voltage exceeds its breakdown range (266–308 V at 1.0 mA), it avalanches to divert surge current away from downstream circuitry. Its bi-directional symmetry ensures identical clamping in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Engineered for high-reliability environments, BZW04P239B-E3/54 uses glass-passivated junction technology, supports soldering up to 275 °C for 10 s (JESD 22-B106), and meets UL 94 V-0 flammability requirements via molded epoxy encapsulation. Its 175 °C max junction temperature and -55 °C to +175 °C operating range align with under-hood automotive and industrial control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 239 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V/48 V industrial or 12 V/24 V automotive systems with high-voltage transients. |
| VBR (min/max) | 266 V / 308 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature conduction during normal operation. |
| VC @ IPPM | 384 V at 1.1 A - Clamped voltage during full-rated 400 W surge; limits stress on protected ICs or MOSFETs downstream. |
| IPPM | 1.1 A - Peak pulse current under 10/1000 µs waveform; quantifies surge-handling capacity for ISO 7637-2 Pulse 1/2/5a/b events. |
| PPPM | 400 W - Peak pulse power dissipation capability; enables single-device protection against repetitive low-duty-cycle transients (0.01 % duty cycle). |
| TJ max | 175 °C - Maximum junction temperature; supports operation in high-ambient environments such as engine control units or motor drives. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD testing per JESD47. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards. Bi-directional construction means no polarity marking on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No functional distinction between leads; either terminal serves as input/output for transient energy diversion in AC or bidirectional DC paths. |
| Leads (anode & cathode) | Current-carrying terminals | Designed for through-hole mounting and manual/automated wave soldering; lead diameter 0.023–0.026 inch (0.58–0.66 mm) supports mechanical retention and thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable, low-leakage avalanche characteristics over lifetime and temperature; prevents moisture ingress and metallization degradation. |
| 400 W peak pulse power (10/1000 µs) | Supports protection against severe load-dump and inductive switching transients common in 24 V commercial vehicle and industrial PLC systems. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules where field reliability is non-negotiable. |
| Bi-directional symmetry | Eliminates need for polarity-aware layout; simplifies design for differential buses (e.g., CAN FD, RS-485), AC sensors, or ungrounded power rails. |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical applications in enclosed enclosures or battery management systems. |
Applications
| Automotive Load-Dump Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O or LIN bus transceivers from ISO 7637-2 Pulse 5a (load dump) events reaching up to 60 V for 400 ms in 12 V systems. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to clamp transients before they propagate into PCB routing. Use Value: Limits clamped voltage to ≤384 V while absorbing 400 W surges, preventing latch-up or gate oxide rupture in protected semiconductors. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors in factory automation against ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp on 4–20 mA or 0–10 V output lines interfacing with PLC analog inputs. Use Value: Maintains signal integrity by limiting transient overshoot to <384 V with <1.1 A peak current, avoiding sensor output saturation or ADC damage. |
| Telecom Power Rail Clamp | Motor Drive DC Bus Snubber |
Use Scenario: Secondary overvoltage protection on -48 V telecom rectifier outputs exposed to lightning-induced surges on long feeder lines. IC Role / Device Role / Timing Role: Standby clamping device parallel to bulk capacitance, activated only during >239 V excursions. Use Value: Provides fail-safe backup to primary MOV-based protection with precise 239 V threshold and repeatable 384 V clamping. |
Use Scenario: Suppressing flyback voltage spikes generated by IGBT turn-off in 400 V DC bus inverters used in HVAC or pump drives. IC Role / Device Role / Timing Role: Passive snubber element across DC link capacitors to absorb inductive energy during switching transitions. Use Value: Handles repetitive 400 W pulses at 0.01 % duty cycle without thermal runaway, extending capacitor and IGBT lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ230CA | DO-214AA (SMB) surface-mount package; 230 V VWM; 389 V VC @ 1.03 A; same 400 W PPPM. | Requires PCB re-layout for SMT assembly; lower thermal mass than DO-41 but less robust for manual repair or high-vibration environments. | Select SMBJ230CA when space-constrained designs demand SMT footprint and automated assembly is prioritized over serviceability. |
| 1.5KE240CA | DO-201AD package; 240 V VWM; 392 V VC @ 1.02 A; 1500 W PPPM (higher energy rating); larger physical size. | Higher surge capacity suits infrequent but extreme transients (e.g., utility grid coupling); not AEC-Q101 qualified. | Choose 1.5KE240CA for non-automotive industrial applications requiring higher single-pulse energy absorption and legacy through-hole compatibility. |
Compared with SMBJ230CA and 1.5KE240CA, BZW04P239B-E3/54 offers AEC-Q101 validation, DO-41 mechanical robustness, and tighter VWM/VC tolerance - making it optimal for automotive and high-reliability industrial deployments where qualification, serviceability, and consistent clamping are critical.
Availability
BZW04P239B-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power rail protection requiring stable component supply and long-term lifecycle support.
Supply support for BZW04P239B-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 BZW04P series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where precision clamping, AEC-Q101 compliance, and long-term stability are mandatory.
FAQ
What is the breakdown voltage range of BZW04P239B-E3/54?
The BZW04P239B-E3/54 has a minimum breakdown voltage (VBR) of 266 V and a maximum of 308 V, measured at 1.0 mA test current. This range ensures reliable, repeatable avalanche conduction above 239 V standoff voltage while accommodating process variation - a key parameter verified in every production lot of BZW04P239B-E3/54.
Is BZW04P239B-E3/54 suitable for automotive applications?
Yes, BZW04P239B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS subsystems. Its 175 °C max junction temperature, glass-passivated junction, and DO-41 mechanical robustness meet stringent automotive environmental and reliability requirements - all confirmed in the official Vishay qualification report for BZW04P239B-E3/54.
What does the "B" suffix in BZW04P239B-E3/54 indicate?
The "B" suffix in BZW04P239B-E3/54 denotes bi-directional functionality, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike uni-directional variants (e.g., BZW04P239-E3/54), BZW04P239B-E3/54 has no polarity marking and delivers identical clamping performance regardless of voltage polarity - a defining feature of the BZW04P239B-E3/54 variant.
What is the maximum clamping voltage of BZW04P239B-E3/54 during a surge event?
The maximum clamping voltage (VC) of BZW04P239B-E3/54 is 384 V, specified at its peak pulse current (IPPM) of 1.1 A under the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions - a critical parameter documented in the Vishay datasheet for BZW04P239B-E3/54 and validated across temperature and lot variations.
Does BZW04P239B-E3/54 require heatsinking in typical applications?
No, BZW04P239B-E3/54 does not require external heatsinking for transient suppression duty cycles (e.g., 0.01 %), as its 1.5 W steady-state power dissipation (PD) is managed by the DO-41 package's thermal path to PCB copper. However, for repetitive high-frequency surges or ambient temperatures exceeding 75 °C, board-level thermal design (e.g., copper pour, thermal vias) should be evaluated per the derating curve in the BZW04P239B-E3/54 datasheet.
BZW04P239B-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):
- 239V
- Voltage - Breakdown (Min):
- 266V
- Voltage - Clamping (Max) @ Ipp:
- 384V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- 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)
BZW04P239B-E3/54 FAQ
1.How can I place an order for BZW04P239B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P239B-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 BZW04P239B-E3/54 reliable?
The price and inventory of BZW04P239B-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 BZW04P239B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P239B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P239B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P239B-E3/54?
BZW04P239B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P239B-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 BZW04P239B-E3/54?
For technical support, including BZW04P239B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P239B-E3/54 requirements.
6.How does Aetrix verify that BZW04P239B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P239B-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 BZW04P239B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P239B-E3/54?
All BZW04P239B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P239B-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 BZW04P239B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P239B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P239B-E3/54 Tags
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