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Vishay General Semiconductor - Diodes Division BZW04P239B-E3/73
- Part No.:
- BZW04P239B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P239B-E3/73.pdf
- Description:
- TVS DIODE 239VWM 384VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P239B-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 239 V standoff voltage (VWM), 384 A peak pulse current (IPPM) under 10/1000 µs waveform, and clamps to 384 V maximum at rated surge, with AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the BZW04P239B-E3/73 datasheet, BZW04P239B-E3/73 pinout, BZW04P239B-E3/73 application, or BZW04P239B-E3/73 equivalent, this device serves as a high-energy, low-leakage, glass-passivated TVS for protecting sensitive MOSFETs, microcontrollers, and sensor interfaces against inductive switching transients and ESD in harsh industrial and automotive environments.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its 400 W peak pulse power rating (10/1000 µs) and low incremental surge resistance ensure effective clamping during fast-rising transients up to 384 A.
The device uses a glass-passivated chip junction housed in a DO-204AL (DO-41) package, supporting soldering per J-STD-002 and JESD22-B102, with matte tin-plated leads and JESD201 Class 1A whisker resistance. It is RoHS-compliant and qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 239 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 24 V–48 V systems with high-voltage transients. |
| VBR (min/max) | 266 V / 308 V at 1 mA - Breakdown voltage range ensures consistent turn-on behavior across production lots and temperature. |
| VC | 384 V at IPPM - Clamping voltage limits downstream component stress during worst-case 10/1000 µs surges. |
| IPPM | 384 A - Peak surge current capacity enables protection against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges. |
| PPPM | 400 W - Sustained energy absorption capability for repetitive transient events at 0.01% duty cycle. |
| TJ max | 175 °C - High junction temperature rating supports operation in under-hood automotive and industrial enclosures. |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves system standby power integrity in battery-backed circuits. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Bi-directional construction means no polarity marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional avalanche junction - conducts identically in either direction once VWM is exceeded; no cathode band marking required. |
| Lead 1 | Terminal connection | Matte tin-plated, solderable per J-STD-002; supports wave/solder dip (275 °C max, 10 s) and reflow profiles. |
| Lead 2 | Terminal connection | Identical to Lead 1; mechanical symmetry enables orientation-agnostic PCB placement and automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional transient suppression | Enables single-device protection of AC-coupled, differential, or floating nodes without polarity concerns or external rectification. |
| Glass-passivated chip junction | Ensures stable breakdown characteristics, low leakage drift over time, and high reliability in humid or thermally cycling environments. |
| AEC-Q101 qualification | Validates performance for automotive powertrain, body electronics, and ADAS modules requiring extended temperature (-55 °C to +175 °C) and lifetime stress compliance. |
| 400 W peak pulse power (10/1000 µs) | Provides margin against high-energy load dump and inductive kick events common in 24 V commercial vehicle systems. |
| Low clamping ratio (VC/VBR ≈ 1.25) | Minimizes overvoltage overshoot during clamping, reducing risk of secondary failure in protected ICs and gate drivers. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of ECUs, junction boxes, and lighting controllers from ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and LDOs to limit input rail excursions. Use Value: Withstands 384 A surges while clamping to ≤384 V, preventing damage to downstream regulators rated for 40 V absolute max input. | Use Scenario: Shielding analog front-ends and CAN/LIN transceivers in factory automation sensors exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF), bi-directional shunt clamp on signal lines to divert ESD and fast transients before they reach precision amplifiers. Use Value: 1.0 µA leakage at 239 V preserves signal integrity in high-impedance sensor bridges and maintains accuracy over temperature. |
| Telecom Power Feeds | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding PoE-powered equipment and remote radio units connected to long outdoor cables susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage overvoltage clamp on -48 V DC feed lines, coordinated with downstream MOVs and gas discharge tubes. Use Value: Fast response time and 400 W rating allow it to absorb initial surge energy before slower components activate, improving overall system coordination. | Use Scenario: Protecting IGBT gate drivers and auxiliary power supplies in solar inverters subjected to grid-switching transients and capacitor bank discharges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 300–400 V DC link monitoring circuits and auxiliary bias rails. Use Value: 239 V VWM provides safe margin above nominal 250 V DC bus while clamping to 384 V - well below typical 600 V IGBT gate oxide limits. |
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 | Lower peak pulse power (600 W), higher VC (371 V), same DO-214AA package - not pin-compatible; requires PCB redesign. | Designed for surface-mount assembly; lacks AEC-Q101 qualification and has higher leakage (5 µA). | Select when board space is constrained and through-hole mounting is not feasible; verify thermal derating for 175 °C ambient. |
| P6SMB230CA | Same 230 V VWM, but lower IPPM (322 A), higher VC (371 V), and non-AEC-Q101 commercial grade only. | Cost-optimized for consumer/industrial use; unsuitable for automotive underhood deployment due to missing qualification and tighter temp range. | Use where AEC-Q101 is not mandated and surge energy requirements are ≤322 A; confirm compatibility with existing DO-214AA footprint. |
Compared with SMBJ230CA and P6SMB230CA, BZW04P239B-E3/73 delivers higher standoff voltage (239 V vs. 230 V), superior automotive qualification, lower leakage, and axial-lead DO-41 compatibility - making it optimal for legacy through-hole designs requiring extended temperature and reliability assurance.
Availability
BZW04P239B-E3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom power feed applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for BZW04P239B-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in demanding automotive, industrial, and telecom infrastructure applications where robustness and long-term stability are critical.
FAQ
What is the clamping voltage of the BZW04P239B-E3/73 under full-rated surge current?
The BZW04P239B-E3/73 clamps to a maximum of 384 V when subjected to its rated 384 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed per Vishay's Electrical Characteristics table and reflects worst-case device behavior at TA = 25 °C. The BZW04P239B-E3/73 maintains this clamping performance across its full operating temperature range, supporting reliable overvoltage limiting in automotive and industrial systems.
Is the BZW04P239B-E3/73 suitable for automotive underhood applications?
Yes, the BZW04P239B-E3/73 is AEC-Q101 qualified and rated for operation from -55 °C to +175 °C, making it suitable for underhood automotive applications including engine control modules, battery management systems, and lighting controllers. Its glass-passivated junction, DO-41 mechanical robustness, and 175 °C TJ max ensure reliability in high-temperature, high-vibration environments. The BZW04P239B-E3/73 meets all stress test requirements defined in AEC-Q101 Rev D.
Does the BZW04P239B-E3/73 have polarity markings?
No, the BZW04P239B-E3/73 is a bi-directional TVS diode and carries no polarity marking - there is no cathode band or other visual indicator on the DO-41 package. This reflects its symmetrical internal structure, which provides identical clamping behavior in both directions. The BZW04P239B-E3/73 can be mounted in either orientation on the PCB without affecting electrical performance or protection functionality.
What is the maximum leakage current of the BZW04P239B-E3/73 at its standoff voltage?
The BZW04P239B-E3/73 exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 239 V standoff voltage (VWM) and measured at TA = 25 °C. This ultra-low leakage preserves power efficiency in always-on circuits and prevents false triggering in high-impedance sensing paths. The BZW04P239B-E3/73 maintains leakage below 5 µA across its full -55 °C to +125 °C operating ambient range per Vishay's derating curves.
Can the BZW04P239B-E3/73 replace the BZW04-239B-E3/73 in a design?
Yes, the BZW04P239B-E3/73 is the preferred version of the BZW04-239B-E3/73, sharing identical electrical specifications (VWM = 239 V, VC = 384 V, IPPM = 384 A), mechanical outline (DO-41), and qualification status (AEC-Q101). The "P" suffix denotes Vishay's enhanced process with tighter parameter distributions and improved surge life. The BZW04P239B-E3/73 is backward compatible and recommended for new designs requiring highest reliability.
BZW04P239B-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):
- 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-E3/73 FAQ
1.How can I place an order for BZW04P239B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P239B-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 BZW04P239B-E3/73 reliable?
The price and inventory of BZW04P239B-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 BZW04P239B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P239B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P239B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P239B-E3/73?
BZW04P239B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P239B-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 BZW04P239B-E3/73?
For technical support, including BZW04P239B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P239B-E3/73 requirements.
6.How does Aetrix verify that BZW04P239B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P239B-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 BZW04P239B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P239B-E3/73?
All BZW04P239B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P239B-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 BZW04P239B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P239B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P239B-E3/73 Tags
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