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Vishay General Semiconductor - Diodes Division BZW04-171-E3/54
- Part No.:
- BZW04-171-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-171-E3/54.pdf
- Description:
- TVS DIODE 171VWM 274VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,825
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Product details
Overview
BZW04-171-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 171 V standoff voltage (VWM), 190–210 V breakdown range (VBR at 1 mA), 274 V clamping voltage (VC) at 1.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-171-E3/54 datasheet, BZW04-171-E3/54 pinout, BZW04-171-E3/54 application, or BZW04-171-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified transient suppressor for bidirectional DC line protection where low leakage (<1.0 μA at VWM), stable temperature coefficient (0.108 %/°C), and high surge immunity (1.5 A IPPM) are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the DO-41 package supports manual and automated through-hole assembly.
The device complies with AEC-Q101 for automotive-grade reliability and exhibits a maximum junction temperature of +175 °C. Its 1.5 W steady-state power dissipation (PD) and 0.01 % duty cycle rating enable repetitive transient suppression without thermal runaway under defined surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - Maximum continuous working voltage before conduction begins; defines safe operating margin for 170 V nominal DC bus lines. |
| VBR (min/max) | 190 V / 210 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients above system rail. |
| VC @ IPPM | 274 V at 1.5 A - Clamping voltage limits downstream component stress during 10/1000 μs surges. |
| PPPM | 400 W - Peak pulse power handling capability per single 10/1000 μs event, enabling IEC 61000-4-5 Level 4 compliance. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +175 °C - High junction temperature rating supports operation in under-hood automotive and industrial control environments. |
| Temperature Coefficient | 0.108 %/°C - Predictable VBR drift over temperature enables accurate system-level transient margining. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; no polarity marking - consistent with bidirectional functionality. Matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No designated anode/cathode; terminals interchangeable - enables placement without orientation check on PCB. |
| Lead 1 | Current entry/exit point | Carries full surge current in either direction; requires ≥0.375" (9.5 mm) lead length for rated IFSM derating per Fig. 6. |
| Lead 2 | Current entry/exit point | Electrically identical to Lead 1; forms low-inductance path across protected line pair (e.g., CAN_H/CAN_L, RS-485 A/B). |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and <1.0 μA leakage across -55 °C to +175 °C operating range. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics requiring zero-failure reliability. |
| 400 W 10/1000 μs pulse rating | Withstands repeated lightning-induced surges per IEC 61000-4-5 without parameter shift or degradation. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in enclosed industrial enclosures and EV battery management systems. |
| JESD201 Class 1A whisker resistance | E3 suffix guarantees <1 μm tin whisker growth under thermal cycling, eliminating latent short-circuit risk in long-life deployments. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across sensor supply and ground, shunting transients before they reach precision ADC inputs. Use Value: Maintains signal fidelity by limiting voltage excursions to ≤274 V during 100 V/50 ms load dump events, preventing ADC saturation or op-amp latch-up. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs communicating via RS-485 over long cable runs subject to EFT and surge coupling. IC Role / Device Role / Timing Role: Line-to-line TVS connected between A and B bus terminals, suppressing common-mode and differential-mode transients simultaneously. Use Value: Enables uninterrupted communication by clamping induced surges to <274 V within <1 ns, preserving data integrity during 4 kV contact discharge per IEC 61000-4-4. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
|
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for smart home devices subjected to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across DC output rails (e.g., 12 V/24 V), absorbing energy from capacitor discharge or transformer flyback spikes. Use Value: Prevents downstream regulator damage by limiting transient overshoot to 274 V while maintaining <1.0 μA leakage to avoid no-load regulation drift. |
Use Scenario: Primary protection of DSL line interface ICs against lightning-induced surges entering via telephone wiring in residential gateways. IC Role / Device Role / Timing Role: Bidirectional suppressor installed between tip/ring pairs and ground, diverting surge current away from sensitive PHY transceivers. Use Value: Survives 6 kV open-circuit lightning surges per ITU-T K.20, reducing field failure rate in outdoor-installed equipment without increasing bill-of-materials count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VWM (170 V), but SMC package (surface-mount); 600 W PPPM; higher VC (275 V); no AEC-Q101 qualification. | Requires PCB rework for SMT layout; suited for space-constrained consumer designs where automotive qualification is unnecessary. | Select SMBJ170CA only when board real estate is limited and AEC-Q101 compliance is not required. |
| P6KE180CA | Higher VWM (180 V); same DO-41 package; lower PPPM (600 W); VC = 287 V; commercial grade only (no AEC-Q101). | Marginally higher standoff allows use in 180 V systems; lacks automotive qualification and has higher clamping voltage. | Choose P6KE180CA for cost-sensitive industrial applications where 180 V operation and non-automotive reliability suffice. |
Compared with SMBJ170CA and P6KE180CA, BZW04-171-E3/54 delivers AEC-Q101 qualification, tighter VC (274 V), and guaranteed 1.0 μA leakage - making it the sole choice for automotive-grade bidirectional protection in through-hole designs requiring zero-whisker risk and UL 94 V-0 compliance.
Availability
BZW04-171-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, consumer power adapter outputs, and telecom DSL line protection requiring stable component supply across multi-year production cycles.
Supply support for BZW04-171-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for bidirectional transient suppression in harsh environments where AEC-Q101 qualification, low leakage, and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of BZW04-171-E3/54?
BZW04-171-E3/54 is a bidirectional TVS diode with symmetrical electrical characteristics in both directions. It has no cathode marking and no designated anode or cathode - both leads are functionally identical, enabling flexible placement across protected lines without orientation constraints. This design eliminates assembly errors and simplifies layout for differential signal protection.
Does BZW04-171-E3/54 meet automotive qualification standards?
Yes, BZW04-171-E3/54 is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88316, Revision 16-Sep-2021). The HE3 suffix denotes AEC-Q101 qualification, and the E3/54 variant meets all stress tests including temperature cycling, humidity bias, and mechanical shock - making BZW04-171-E3/54 suitable for under-hood and body-control module applications.
What is the maximum clamping voltage of BZW04-171-E3/54 during a transient event?
The maximum clamping voltage (VC) of BZW04-171-E3/54 is 274 V at a peak pulse current (IPPM) of 1.5 A with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can BZW04-171-E3/54 be used in surface-mount designs?
No, BZW04-171-E3/54 uses a DO-41 (DO-204AL) axial-leaded through-hole package and is not compatible with surface-mount assembly processes. For SMT alternatives with similar electrical specs, consider the SMBJ170CA or SMCJ170CA families - but note these lack AEC-Q101 qualification unless explicitly specified with HE3 or equivalent suffixes.
What is the reverse leakage current specification for BZW04-171-E3/54 at its standoff voltage?
At its 171 V standoff voltage (VWM), BZW04-171-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, as specified in the Vishay datasheet. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance sensing circuits and battery-powered systems where standby current budget is tightly constrained.
BZW04-171-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-171-E3/54 FAQ
1.How can I place an order for BZW04-171-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-171-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 BZW04-171-E3/54 reliable?
The price and inventory of BZW04-171-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 BZW04-171-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-171-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-171-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-171-E3/54?
BZW04-171-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-171-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 BZW04-171-E3/54?
For technical support, including BZW04-171-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-171-E3/54 requirements.
6.How does Aetrix verify that BZW04-171-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-171-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 BZW04-171-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-171-E3/54?
All BZW04-171-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-171-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 BZW04-171-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-171-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-171-E3/54 Tags
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