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Vishay General Semiconductor - Diodes Division BZW04P37HE3/54
- Part No.:
- BZW04P37HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P37HE3/54.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,257
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Product details
Overview
BZW04P37HE3/54 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), clamping voltage of 59.3 V at 6.7 A, AEC-Q101 qualification, and DO-204AL (DO-41) package - used to safeguard automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching transients.
For engineers reviewing the BZW04P37HE3/54 datasheet, BZW04P37HE3/54 pinout, BZW04P37HE3/54 application, or BZW04P37HE3/54 equivalent, key selection criteria include its bi-directional clamping behavior, 175 °C maximum junction temperature, low 0.101 %/°C VBR temperature coefficient, and compliance with automotive reliability standards - critical for high-reliability 12 V/24 V system designs.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient events exceeding VWM, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for bi-directional operation, BZW04P37HE3/54 exhibits symmetrical electrical characteristics in both polarities, with no polarity marking on the DO-41 package. It supports repetitive surge duty cycles up to 0.01 % and withstands soldering at 275 °C for 10 s per JESD22-B106.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36.8 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 36 V nominal systems. |
| VC @ IPPM | 59.3 V - Clamping voltage at 6.7 A peak pulse current; determines maximum voltage stress imposed on protected ICs during transients. |
| PPPM | 400 W - Peak pulse power handling (10/1000 µs waveform); enables suppression of high-energy surges common in automotive load-dump or inductive kick scenarios. |
| IPPM | 6.7 A - Peak pulse current capability; directly correlates with surge energy absorption (E ≈ 0.4 × VC × IPPM × tp). |
| TJ max. | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments and high-ambient industrial settings. |
| Temp. Coeff. VBR | 0.101 %/°C - Low temperature drift of breakdown voltage; ensures stable clamping threshold across wide temperature ranges (−55 °C to +175 °C). |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors, including HTSL, TC, HTRB, and UHAST. |
Pinout & Package
Package: DO-204AL (DO-41), axial lead, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads, RoHS-compliant, AEC-Q101 qualified (HE3 suffix). No polarity marking - bi-directional operation confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either lead functions identically; no cathode band - enables placement without orientation concern in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures long-term stability of breakdown voltage and leakage performance under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge waveforms in automotive and industrial applications. |
| AEC-Q101 qualification | Validates reliability for automotive electronics including body control modules, ADAS sensors, and powertrain subsystems. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage overshoot during clamping - critical for protecting 3.3 V/5 V logic interfaces downstream of protection stage. |
| RoHS-compliant, matte tin leads | Supports lead-free reflow and wave soldering per J-STD-002/JESD22-B102; whisker-resistant per JESD201 Class 2 (HE3). |
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 transients and ESD in vehicle ECUs. IC Role / Device Role: Bi-directional shunt TVS placed at connector interface to clamp ± transients before they reach signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends while maintaining signal integrity due to low capacitance (<100 pF typical). |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role: Primary overvoltage clamp on dry-contact or optocoupler input stages exposed to inductive load switching in factory automation. Use Value: Enables reliable operation in harsh electromagnetic environments with >100,000 surge cycles lifetime, validated per AEC-Q101 accelerated stress tests. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-level surge protection on Ethernet PHY or RS-485 data lines in network equipment subjected to lightning-induced surges. IC Role / Device Role: Fast-response bi-directional clamp limiting voltage excursions to <60 V during 1 kV/0.5 kA IEC 61000-4-5 combination wave testing. Use Value: Complements primary GDT or MOV protection by providing precise low-voltage clamping and sub-nanosecond response time. |
Use Scenario: Input-stage transient suppression on AC-DC adapter primary side, guarding bridge rectifier and controller ICs from line surges. IC Role / Device Role: Stand-off rated for 36.8 V DC, enabling use after rectification but before bulk capacitor - absorbs residual switching spikes and line transients. Use Value: Eliminates need for additional series impedance or RC snubbers by delivering 400 W pulse handling in compact DO-41 footprint. |
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 VWM (36 V), higher IPPM (11.8 A), lower VC (58.1 V), SMC package (larger footprint, better thermal dissipation) | Better suited for higher-energy surges where board space allows SMC; not AEC-Q101 qualified | Select SMBJ36CA if surge energy exceeds 400 W or thermal management requires larger package; verify layout compatibility. |
| 1.5KE39CA | Higher VWM (33.3 V), same bi-directionality, 1500 W rating, DO-201 package (longer leads, higher inductance) | Used in legacy industrial power supplies; slower response due to higher junction capacitance (~150 pF) | Choose 1.5KE39CA only for cost-sensitive non-automotive applications where clamping voltage margin >59.3 V is acceptable. |
Compared with BZW04P37HE3/54, SMBJ36CA offers superior surge current handling and lower clamping voltage but lacks AEC-Q101 qualification and requires SMC footprint rework; 1.5KE39CA provides higher peak power but sacrifices response speed and automotive reliability - making BZW04P37HE3/54 the optimal choice for space-constrained, AEC-Q101–mandated designs.
Availability
BZW04P37HE3/54 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 DO-41 through-hole compatibility.
Supply support for BZW04P37HE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications infrastructure where precise clamping, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of BZW04P37HE3/54 at its rated peak pulse current?
The BZW04P37HE3/54 has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is BZW04P37HE3/54 unidirectional or bidirectional, and how is polarity identified?
BZW04P37HE3/54 is a bi-directional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients. As stated in the Vishay datasheet, bi-directional types like BZW04P37HE3/54 have no polarity marking - the DO-41 package lacks a cathode band, and either lead may be connected to either side of the protected line without functional impact.
Does BZW04P37HE3/54 meet automotive reliability standards?
Yes, BZW04P37HE3/54 is AEC-Q101 qualified, as confirmed by the HE3 suffix and documentation (Document Number: 88316). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), highly accelerated stress test (HAST), and unbiased highly accelerated stress test (UHAST), validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum operating temperature for BZW04P37HE3/54?
The BZW04P37HE3/54 has a maximum junction temperature (TJ) of +175 °C and an operating junction/storage temperature range of −55 °C to +175 °C. This wide thermal envelope supports deployment in demanding environments such as engine control units, motor drives, and outdoor industrial enclosures without derating under normal ambient conditions.
How does the HE3 suffix differ from the E3 suffix in BZW04P37HE3/54?
The HE3 suffix in BZW04P37HE3/54 indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only (JESD201 Class 1A). The HE3 variant undergoes additional automotive-specific stress screening and is intended for automotive and high-reliability industrial applications where long-term intermetallic growth must be mitigated.
BZW04P37HE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P37HE3/54 FAQ
1.How can I place an order for BZW04P37HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P37HE3/54 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 BZW04P37HE3/54 reliable?
The price and inventory of BZW04P37HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P37HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P37HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P37HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P37HE3/54?
BZW04P37HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P37HE3/54 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 BZW04P37HE3/54?
For technical support, including BZW04P37HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P37HE3/54 requirements.
6.How does Aetrix verify that BZW04P37HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P37HE3/54 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 BZW04P37HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P37HE3/54?
All BZW04P37HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P37HE3/54, 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 BZW04P37HE3/54 part is unused and in its original packaging.
Return procedure for BZW04P37HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P37HE3/54 Tags
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