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Vishay General Semiconductor - Diodes Division BZW04-171HE3/54
- Part No.:
- BZW04-171HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-171HE3/54.pdf
- Description:
- TVS DIODE 171VWM 274VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,373
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Product details
Overview
BZW04-171HE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 171 V standoff voltage (VWM), 190–210 V breakdown range (VBR at 1 mA), 274 V maximum clamping voltage (VC) at 1.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the BZW04-171HE3/54 datasheet, BZW04-171HE3/54 pinout, BZW04-171HE3/54 application, or BZW04-171HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, bidirectional polarity, DO-41 mechanical compatibility, low leakage (<1.0 µA at VWM), and temperature coefficient of 0.108 %/°C - critical for stable overvoltage protection in automotive and harsh-environment embedded systems.
Technical Context
This device operates as a voltage-clamping surge protector with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures robust surge handling and long-term reliability under repetitive 10/1000 µs pulses at 0.01% duty cycle.
The BZW04-171HE3/54 exhibits low incremental surge resistance and fast response time, delivering consistent clamping performance across -55 °C to +175 °C operating junction temperature. Its 1.5 W steady-state power dissipation and 400 W peak pulse capability support transient energy absorption in compact PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V/24 V/48 V system rails. |
| VBR min/max | 190 V / 210 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 274 V at 1.5 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 400 W - Peak pulse power handling per single transient; supports IEC 61000-4-5 Level 3/4 surge immunity testing. |
| ID @ VWM | <1.0 µA - Reverse leakage current at rated standoff voltage; minimizes standby power loss in battery-powered systems. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial control environments. |
| Temp. coeff. | 0.108 %/°C - Voltage drift rate of VBR; allows accurate thermal derating in high-temperature designs. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated terminals compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - bidirectional operation confirmed by HE3 suffix and documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (axial) | Transient conduction path | Identical terminal behavior in both directions; no cathode band - symmetric clamping for AC or floating signal lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - suitable for engine control, body electronics, and ADAS sensor protection. |
| Glass passivated junction | Enhanced moisture resistance and long-term stability under thermal cycling - improves field reliability in industrial automation. |
| 400 W peak pulse power | Robust energy absorption for IEC 61000-4-5 10/1000 µs surges up to 1.5 A - eliminates need for additional series impedance in many interface designs. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety standards for enclosed equipment - required in telecom and medical auxiliary circuits. |
| JESD201 class 2 whisker resistance | HE3 suffix confirms enhanced mitigation of tin whisker growth - critical for high-reliability aerospace and rail applications. |
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 ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to limit transient voltage before reaching sensitive IC pins. Use Value: Maintains signal integrity during 12 V/24 V system transients while meeting AEC-Q101 qualification for automotive deployment. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Fast-response shunt protector across 24 V DC input terminals to clamp spikes before they propagate into microcontroller GPIOs. Use Value: Enables reliable operation in factory-floor environments with frequent switching noise and high ambient temperatures up to 70 °C. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Surge suppression on RS-485/RS-232 data lines connecting base stations to remote units in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS placed differential-mode across twisted-pair lines to absorb lightning-induced common-mode surges. Use Value: Provides UL 94 V-0 flame resistance and low capacitance to preserve signal rise time without compromising safety compliance. | Use Scenario: Overvoltage protection for microcontroller reset lines and front-panel button inputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) bidirectional suppressor ensuring no DC loading on weak-pull-up circuits during normal operation. Use Value: Prevents false resets and erratic key detection caused by ESD events while supporting RoHS-compliant, cost-sensitive manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | DO-214AA package (SMB), 170 V VWM, 274 V VC @ 1.5 A, same 400 W PPPM | Surface-mount footprint; higher thermal resistance than axial DO-41 in free-air conditions | Select when board space is constrained and reflow assembly is preferred over through-hole mounting. |
| 1.5KE170CA | DO-201AD package, 170 V VWM, 274 V VC @ 1.5 A, 1500 W PPPM, higher surge rating | Larger body size; suited for higher-energy surge environments but less compact than DO-41 | Choose for legacy designs requiring higher peak power margin or where existing footprint matches DO-201AD. |
Compared with BZW04-171HE3/54, SMBJ170CA offers SMT compatibility at the cost of reduced thermal performance in non-heatsinked layouts, while 1.5KE170CA delivers greater surge capacity in a larger axial package - making BZW04-171HE3/54 optimal for AEC-Q101-compliant, space-constrained, through-hole automotive and industrial applications.
Availability
BZW04-171HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for BZW04-171HE3/54 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04 series is engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - combining AEC-Q101 validation, glass-passivated junctions, and precise VWM/VC matching for robust system-level ESD and surge immunity.
FAQ
What is the polarity configuration of BZW04-171HE3/54?
BZW04-171HE3/54 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative voltage transients. The HE3 suffix and absence of cathode band marking confirm this configuration - unlike unidirectional variants which feature a color band denoting the cathode end. This makes BZW04-171HE3/54 ideal for protecting AC-coupled or floating signal lines where polarity is undefined.
Is BZW04-171HE3/54 qualified for automotive applications?
Yes, BZW04-171HE3/54 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 16-Sep-2021 (Document Number: 88316). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - confirming suitability for under-hood and cabin electronics such as engine control units, body control modules, and ADAS sensor interfaces.
What does the HE3 suffix indicate on BZW04-171HE3/54?
The HE3 suffix on BZW04-171HE3/54 denotes RoHS-compliant construction with JESD201 class 2 whisker resistance - exceeding standard E3 (class 1A) requirements. It also signifies AEC-Q101 qualification and commercial-grade temperature range (-55 °C to +175 °C). This distinguishes BZW04-171HE3/54 from base-E3 variants, which lack automotive qualification despite identical electrical specs.
What is the maximum clamping voltage of BZW04-171HE3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-171HE3/54 is 274 V at a peak pulse current (IPPM) of 1.5 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and represents the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can BZW04-171HE3/54 be used in place of unidirectional TVS diodes?
No - BZW04-171HE3/54 is strictly bidirectional and must not replace unidirectional TVS diodes in DC-biased circuits where forward conduction would cause short-circuit failure. Its symmetrical IV curve allows use only in AC, floating, or dual-rail applications. For DC power rail protection, a unidirectional variant like BZW04-171E3/54 (with cathode band) is required - BZW04-171HE3/54 is not a drop-in substitute.
BZW04-171HE3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 274V
- Current - Peak Pulse (10/1000µs):
- 1.5A
- 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)
BZW04-171HE3/54 FAQ
1.How can I place an order for BZW04-171HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-171HE3/54 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 BZW04-171HE3/54 reliable?
The price and inventory of BZW04-171HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-171HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-171HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-171HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-171HE3/54?
BZW04-171HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-171HE3/54 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 BZW04-171HE3/54?
For technical support, including BZW04-171HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-171HE3/54 requirements.
6.How does Aetrix verify that BZW04-171HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-171HE3/54 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 BZW04-171HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-171HE3/54?
All BZW04-171HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-171HE3/54, 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 BZW04-171HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-171HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-171HE3/54 Tags
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