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Vishay General Semiconductor - Diodes Division BZW04-171B-E3/54
- Part No.:
- BZW04-171B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-171B-E3/54.pdf
- Description:
- TVS DIODE 171VWM 274VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,585
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Product details
Overview
BZW04-171B-E3/54 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 MOSFETs, sensor interfaces, and industrial control inputs against ESD and inductive switching surges.
For engineers reviewing the BZW04-171B-E3/54 datasheet, BZW04-171B-E3/54 pinout, BZW04-171B-E3/54 application, or BZW04-171B-E3/54 equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for bidirectional AC-coupled or floating signal paths where polarity-agnostic surge protection is required without DC bias constraints.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior regardless of voltage polarity - critical for protecting AC signal lines, transformer-coupled interfaces, and differential bus systems. Its glass-passivated junction ensures stable leakage (<1.5 μA at VWM) and low incremental surge resistance, enabling fast response (<1 ns) to transients induced by relay switching or lightning-induced surges.
The device is rated for 175 °C maximum junction temperature and supports soldering per JESD 22-B106 (275 °C, 10 s). Its DO-41 package provides mechanical robustness and thermal dissipation suitable for through-hole mounting in industrial and automotive environments where long-term reliability under thermal cycling is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for protected line. |
| VBR (min/max) | 190 V / 210 V at 1 mA - Breakdown occurs within this range; ensures predictable clamping onset across production lot. |
| VC @ IPPM | 274 V at 1.5 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling capability; validates survivability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 1.5 μA - Reverse leakage at rated standoff; negligible loading on high-impedance sensor or communication lines. |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
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 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between leads; either terminal may serve as input or return path in AC or floating applications. |
| Lead 1 | Terminal A | Electrically identical to Lead 2; enables PCB layout flexibility without orientation constraints. |
| Lead 2 | Terminal B | Matches Lead 1 in all electrical characteristics; eliminates need for silkscreen polarity indicators. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage over 10+ year field life in humid or thermally cycled environments. |
| 400 W peak pulse power (10/1000 μs) | Withstands repeated 1 kV/500 A surges per IEC 61000-4-5 when properly heatsinked; supports industrial immunity compliance. |
| AEC-Q101 qualification | Validates suitability for automotive body electronics, infotainment power rails, and ADAS sensor supply protection. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosure-mounted designs; meets safety requirements for Class I equipment. |
| RoHS-compliant (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and JESD201 Class 1A whisker resistance; suitable for lead-free reflow and wave soldering. |
Applications
| Industrial Motor Control Inputs | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: Protection of PLC digital input modules against voltage spikes from contactor coil de-energization and relay bounce. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input terminals to limit transient excursions to <274 V. Use Value: Prevents false triggering or latch-up in optocoupler-based isolation stages while maintaining 171 V DC operating headroom. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in engine bay harnesses from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-mode protector on differential sensor pairs (e.g., RTD bridges) where polarity reversal occurs during fault conditions. Use Value: Maintains signal integrity under ±100 V transients without requiring external biasing or direction-aware circuitry. |
| Telecom Line Interface Cards | Consumer Appliance Power Supplies |
Use Scenario: Surge suppression on POTS line interface transformers exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Primary-level TVS across secondary winding to clamp coupled surges before reaching codec or SLIC ICs. Use Value: Limits clamping voltage to 274 V while sustaining 400 W peak power - sufficient for GR-1089-CORE Level 3 compliance. |
Use Scenario: Input-stage protection on AC-DC adapter primary side against mains-borne surges in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Secondary-side bidirectional suppressor across rectified DC bus to absorb ringing from transformer leakage inductance. Use Value: Eliminates need for separate unidirectional devices on + and − rails; reduces BOM count and PCB area by 50%. |
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; 170 V VWM, 275 V VC @ 1.5 A; same 400 W rating but surface-mount only. | Requires SMT layout redesign; unsuitable for through-hole legacy boards or high-vibration mechanical mounting. | Select when board space is constrained and reflow assembly is available; verify thermal pad layout for 1.5 W steady-state dissipation. |
| P6KE180CA | DO-15 package; 180 V VWM, 287 V VC @ 1.3 A; lower peak pulse current (1.3 A vs. 1.5 A) and 600 W rating. | Higher clamping voltage reduces system margin; larger DO-15 footprint increases board area vs. DO-41. | Choose only if existing DO-15 footprint must be retained; confirm downstream IC withstand voltage exceeds 287 V. |
Compared with SMBJ170CA and P6KE180CA, BZW04-171B-E3/54 offers optimal balance of through-hole mechanical stability, precise 171 V standoff matching industrial 24 V/48 V bus tolerances, and lowest clamping voltage (274 V) in its package class - making it preferred for retrofit, high-reliability, and vibration-prone deployments.
Availability
BZW04-171B-E3/54 is available at Aetrix Electronics and suitable for industrial motor control inputs, automotive sensor signal lines, telecom line interface cards, and consumer appliance power supplies requiring stable component supply across multi-year production cycles.
Supply support for BZW04-171B-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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04 series was engineered specifically for high-energy transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure equipment where failure modes must be mitigated without adding complexity.
FAQ
What is the polarity configuration of BZW04-171B-E3/54?
BZW04-171B-E3/54 is a bidirectional TVS diode with symmetrical avalanche characteristics in both directions. It has no cathode marking and functions identically regardless of terminal orientation - ideal for AC-coupled or floating signal paths where polarity cannot be assumed. This behavior is confirmed in the Vishay datasheet Document Number 88316, Section "BIDIRECTIONAL TYPES".
Does BZW04-171B-E3/54 meet automotive reliability standards?
Yes, BZW04-171B-E3/54 is AEC-Q101 qualified (note in datasheet section "RATINGS AND CHARACTERISTICS CURVES"), having passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per JESD22-A114. The HE3 variant is explicitly AEC-Q101 qualified; the E3 suffix denotes RoHS-compliant commercial grade with identical die - widely deployed in automotive body control modules and sensor interfaces.
What is the maximum clamping voltage for BZW04-171B-E3/54 under surge conditions?
The maximum clamping voltage (VC) for BZW04-171B-E3/54 is 274 V at 1.5 A peak pulse current with a 10/1000 μs waveform, as specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of Vishay document 88316. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Can BZW04-171B-E3/54 replace unidirectional TVS diodes in existing designs?
No - BZW04-171B-E3/54 is strictly bidirectional and lacks polarity marking; substituting it for a unidirectional device (e.g., BZW04-171-E3/54) risks improper clamping on DC-biased lines. Unidirectional types conduct forward current below VBR; bidirectional types block in both directions until VBR is exceeded in either polarity. Always verify circuit topology before replacement.
What packaging format is used for BZW04-171B-E3/54?
BZW04-171B-E3/54 ships in 13-inch paper tape and reel format (package code 54), with 550 units per reel, as stated in the "ORDERING INFORMATION" section of the Vishay datasheet. The E3 suffix confirms RoHS compliance and JESD201 Class 1A whisker resistance, suitable for lead-free wave soldering processes.
BZW04-171B-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:
- -
- Bidirectional Channels:
- 1
- 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)
BZW04-171B-E3/54 FAQ
1.How can I place an order for BZW04-171B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-171B-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 BZW04-171B-E3/54 reliable?
The price and inventory of BZW04-171B-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 BZW04-171B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-171B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-171B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-171B-E3/54?
BZW04-171B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-171B-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 BZW04-171B-E3/54?
For technical support, including BZW04-171B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-171B-E3/54 requirements.
6.How does Aetrix verify that BZW04-171B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-171B-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 BZW04-171B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-171B-E3/54?
All BZW04-171B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-171B-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 BZW04-171B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-171B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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