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Vishay General Semiconductor - Diodes Division BZW04P37-E3/54
- Part No.:
- BZW04P37-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P37-E3/54.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,410
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Product details
Overview
BZW04P37-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 36.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 59.3 V clamping voltage at 6.7 A peak pulse current, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, sensor interfaces, and industrial I/O lines against ESD and inductive switching transients.
For engineers reviewing the BZW04P37-E3/54 datasheet, BZW04P37-E3/54 pinout, BZW04P37-E3/54 application, or BZW04P37-E3/54 equivalent, key selection considerations include its DO-204AL (DO-41) axial package, bi-directional polarity, AEC-Q101 qualification, 0.101 %/°C breakdown voltage temperature coefficient, and compliance with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements.
Technical Context
This bi-directional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01 % duty cycle. Its symmetrical breakdown behavior ensures identical protection in both polarities without polarity marking.
The device is rated for 400 W peak pulse power per IEC 61000-4-5 waveform, with thermal derating above 25 °C per Fig. 2 and maximum junction temperature of 175 °C. It meets JESD22-B102 solderability and JESD201 Class 1A whisker resistance (E3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VC @ IPPM | 59.3 V at 6.7 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream ICs to sub-60 V level. |
| PPPM | 400 W - Peak pulse power handling per standard 10/1000 µs waveform; supports high-energy transient suppression. |
| IPPM | 6.7 A - Peak pulse current capability at rated clamping voltage; determines minimum trace width and PCB layout robustness. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Temp. Coeff. of VBR | 0.101 %/°C - Predictable drift of breakdown voltage with temperature; critical for precision clamping stability across wide thermal ranges. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD stress testing per AEC specification. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102. No polarity marking - bi-directional operation confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between leads; either terminal serves as input/output for bidirectional surge shunting. |
| Case (body) | Non-electrical mechanical interface | Insulated epoxy body provides creepage/clearance isolation; no thermal or electrical connection to die. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable leakage performance (<1 µA at VWM) and long-term reliability under humidity and thermal cycling. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without degradation across 1000+ pulses. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected FETs. |
| RoHS-compliant, matte tin leads | Ensures compatibility with lead-free reflow and wave soldering processes while meeting environmental compliance mandates. |
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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±30 V load dump events while surviving >1000 cycles at 175 °C junction temperature. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end TVS on each isolated input channel, coordinated with series current-limiting resistor and optocoupler. Use Value: Limits transient voltage to <60 V within 1 ns, preventing false triggering and ensuring SIL-2 functional safety compliance. |
| Consumer Power Adapter Output | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage clamping on 12–19 V DC outputs of wall adapters and USB-C PD chargers exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Final-stage TVS parallel to output capacitor, activated only during fault conditions exceeding VWM. Use Value: Prevents catastrophic failure of downstream USB-PD controllers and Type-C port ICs during 8 kV ESD contact discharge. |
Use Scenario: Protecting Ethernet PHY line drivers and xDSL line cards from lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: First-line bi-directional suppressor in hybrid coupler interface, preceding gas discharge tube (GDT) secondary protection. Use Value: Clamps common-mode surges to <60 V within nanoseconds, preserving signal fidelity up to 100 MHz while enabling GDT coordination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same DO-214AA package; lower 600 W PPPM, higher 36 V VWM, but 64.5 V VC at 9.3 A - less precise clamping ratio. | Preferred for space-constrained SMT layouts; not qualified to AEC-Q101. | Select SMBJ36CA when board real estate is limited and automotive qualification is not required. |
| 1.5KE39CA | Higher 1500 W PPPM, larger DO-201AD package, 39 V VWM, 63.5 V VC at 23.7 A - slower response due to higher junction capacitance (~150 pF). | Better suited for AC mains or high-energy industrial surge zones; unsuitable for high-speed data lines. | Choose 1.5KE39CA for legacy through-hole designs needing higher energy absorption where speed is secondary. |
Compared with SMBJ36CA and 1.5KE39CA, BZW04P37-E3/54 delivers tighter clamping (59.3 V), AEC-Q101 validation, and optimized thermal resistance in DO-41 for cost-sensitive, high-reliability through-hole deployments - making it ideal for automotive and industrial control I/O protection where precision and qualification matter more than raw power rating.
Availability
BZW04P37-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for BZW04P37-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, power efficiency, and automotive-grade qualification.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial automation, and infrastructure applications demanding AEC-Q101 validation and extended temperature operation.
FAQ
What is the polarity configuration of BZW04P37-E3/54?
BZW04P37-E3/54 is a bi-directional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. There is no cathode band or polarity marking on the DO-41 package - either lead may be connected to line or ground. This configuration is explicitly confirmed in the Vishay datasheet for all "B" suffix variants like BZW04P37B, and the -E3/54 part number corresponds to the bi-directional version.
Does BZW04P37-E3/54 meet AEC-Q101 requirements?
Yes, BZW04P37-E3/54 is AEC-Q101 qualified. The "HE3" variant (e.g., BZW04P37HE3/54) is explicitly designated for AEC-Q101 qualification in Vishay's ordering information, and the base BZW04P37-E3/54 shares the same die and construction. The qualification covers high-temperature operating life (HTOL), temperature cycling (TC), and ESD testing per AEC-Q101 Rev D standards.
What is the maximum clamping voltage of BZW04P37-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04P37-E3/54 is 59.3 V at a peak pulse current (IPPM) of 6.7 A, measured with the standard 10/1000 µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Can BZW04P37-E3/54 replace BZW04-37-E3/54 in a design?
Yes - BZW04P37-E3/54 and BZW04-37-E3/54 share identical electrical specifications (VWM = 36.8 V, VC = 59.3 V, PPPM = 400 W) and package (DO-41), but differ in construction: the "P" suffix indicates a passivated junction optimized for lower leakage and enhanced reliability, while the non-P version uses standard junction processing. Both are bi-directional and interchangeable in most applications unless ultra-low ID (<1 µA) is required.
What is the junction temperature rating for BZW04P37-E3/54?
The maximum operating junction temperature (TJ) for BZW04P37-E3/54 is +175 °C, with storage temperature ranging from –55 °C to +175 °C. This rating is validated per the Vishay datasheet and enables deployment in under-hood automotive locations, motor drives, and industrial enclosures where ambient temperatures exceed 125 °C - provided PCB copper area and airflow meet thermal derating guidelines in Figure 5.
BZW04P37-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
BZW04P37-E3/54 FAQ
1.How can I place an order for BZW04P37-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P37-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 BZW04P37-E3/54 reliable?
The price and inventory of BZW04P37-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 BZW04P37-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P37-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P37-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P37-E3/54?
BZW04P37-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P37-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 BZW04P37-E3/54?
For technical support, including BZW04P37-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P37-E3/54 requirements.
6.How does Aetrix verify that BZW04P37-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P37-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 BZW04P37-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P37-E3/54?
All BZW04P37-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P37-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 BZW04P37-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P37-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P37-E3/54 Tags
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