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Vishay General Semiconductor - Diodes Division 1N6271A-E3/54
- Part No.:
- 1N6271A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6271A-E3/54.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,658
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Product details
Overview
1N6271A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 9.5 V minimum breakdown voltage (VBR), 8.55 V standoff voltage (VWM), 14.5 V clamping voltage at 10 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in power supply input stages and I/O line protection.
For engineers reviewing the 1N6271A-E3/54 datasheet, 1N6271A-E3/54 pinout, 1N6271A-E3/54 application, or 1N6271A-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, clamping performance under transient stress, thermal resistance data, and direct alternatives for circuit-level ESD and surge hardening.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power rating applies with a 10/1000 µs waveform at 0.01 % duty cycle, and it maintains stable clamping up to 175 °C junction temperature.
The device exhibits 0.073 %/°C temperature coefficient of VBR, 10 µA maximum reverse leakage at VWM, and 3.5 V forward voltage at 100 A surge - confirming suitability for high-energy transient suppression in DC power rails and signal interfaces without forward conduction interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 9.5 V - guaranteed minimum breakdown voltage at 1 mA test current; defines earliest clamping onset under overvoltage |
| VWM | 8.55 V - maximum continuous working voltage; ensures no conduction during normal operation |
| VC @ IPPM | 14.5 V - clamped voltage at 10 A peak pulse current; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); supports robust lightning and inductive-switching surge immunity |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; informs heatsinking requirements for sustained power dissipation |
| TJ max | +175 °C - maximum operating junction temperature; enables use in under-hood automotive and industrial environments |
| IFSM | 200 A - non-repetitive forward surge current (8.3 ms half-sine); validates survivability against high-current transients |
Pinout & Package
1N6271A-E3/54 is housed in the industry-standard axial-leaded Case Style 1.5KE package (JEDEC DO-201AD), with cathode indicated by a color band on the body. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to lower-potential side of protected circuit (e.g., ground return path or negative rail) |
| Cathode | Current exit point in forward bias; marked with band | Connected to higher-potential side (e.g., VIN, signal line, or positive rail) to clamp overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable long-term reliability and low leakage (<10 µA at VWM) across temperature and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity exceeding IEC 61000-4-5 Level 4 (4 kV/2 Ω) when properly mounted |
| Clamping voltage ≤14.5 V at 10 A | Limits downstream IC stress to safe levels for 3.3 V and 5 V logic families during transient events |
| AEC-Q101 qualified option available | HE3 suffix variants meet automotive-grade reliability requirements for engine control and body electronics |
| RoHS-compliant (E3 suffix) | Meets JESD 201 Class 1A whisker resistance; suitable for lead-free reflow and wave soldering processes |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: 24 V DC power feed to PLC I/O modules exposed to relay coil flyback and load dump transients. IC Role / Device Role: Primary shunt protector placed between VIN and chassis ground before DC-DC converter input. Use Value: Clamps 100 V/10 A transients to ≤14.5 V within <1 ns, preventing damage to upstream rectifier and regulator ICs. |
Use Scenario: LIN bus signal lines in door module subjected to ESD and battery disconnect spikes. IC Role / Device Role: Unidirectional TVS on LINTX/LINRX lines referenced to vehicle ground. Use Value: Maintains 8.55 V standoff while suppressing ±30 kV contact ESD per ISO 10605 with sub-14.5 V clamping. |
| Consumer Appliance Motor Drive Board | Telecom PoE Interface Protection |
Use Scenario: H-bridge gate driver supply rail in washing machine motor controller experiencing inductive kickback. IC Role / Device Role: Rail clamp across +12 V supply and GND, adjacent to gate driver IC. Use Value: Absorbs 1500 W pulses without degradation, preserving MOSFET gate oxide integrity and timing accuracy. |
Use Scenario: Data pair protection on IEEE 802.3af/at Power over Ethernet (PoE) injector outputs. IC Role / Device Role: Unidirectional TVS on each powered pair (spare or data pairs), grounded to common reference. Use Value: Withstands 100 V/10 A surges induced by cable coupling while maintaining <10 µA leakage at 57 V PoE voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | DO-214AA package (SMB), 1000 W PPPM, 17.0 V VC @ 52.6 A, 10.0 V VBR min | Lower peak power, higher clamping voltage, surface-mount only - suited for space-constrained PCBs with moderate surge risk | Select SMBJ10A when board real estate is limited and surge energy is ≤100 mJ; verify layout thermal relief for 75 °C/W RθJA equivalence. |
| 1.5KE10A | Same 1.5KE package, identical VBR/VWM/VC specs, but E3/54 tape-and-reel packaging differs from base 1.5KE10A bulk/ammopack | No functional difference - identical electrical and thermal behavior; only packaging and traceability differ | Choose 1.5KE10A for manual prototyping or low-volume builds; 1N6271A-E3/54 is preferred for automated SMT assembly with 1400-unit reels. |
Compared with SMBJ10A, 1N6271A-E3/54 delivers 50 % higher surge power handling and 2.5 V lower clamping at rated current, enabling stronger protection in high-noise industrial environments; versus 1.5KE10A, it offers full RoHS compliance and JESD 201 Class 1A whisker resistance for high-reliability production.
Availability
1N6271A-E3/54 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control module I/O, consumer appliance motor drive boards, and telecom PoE interface protection requiring stable component supply and full traceability.
Supply support for 1N6271A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1N6271A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure where failure resilience is critical.
FAQ
What is the breakdown voltage tolerance for 1N6271A-E3/54?
The 1N6271A-E3/54 has a specified breakdown voltage range of 9.5 V (minimum) to 10.5 V (maximum) at 1 mA test current, per Vishay Document 88301. This ±5.3 % tolerance ensures predictable clamping onset across manufacturing lots and temperature extremes, supporting consistent protection design in 12 V systems.
Is 1N6271A-E3/54 suitable for bidirectional transient suppression?
No, 1N6271A-E3/54 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse breakdown. For bidirectional protection, Vishay offers the 1N6271CA variant (not 1N6271A-E3/54), which suppresses transients in both directions without external polarity constraints.
What is the maximum clamping voltage of 1N6271A-E3/54 under surge conditions?
The 1N6271A-E3/54 clamps to a maximum of 14.5 V at 10 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Does 1N6271A-E3/54 meet automotive qualification standards?
The base 1N6271A-E3/54 is commercial-grade and RoHS-compliant (E3 suffix). An AEC-Q101 qualified version is available as 1N6271AHE3_B - same electrical specs but with extended reliability testing for automotive under-hood applications. Always verify suffix code for qualification status.
How does the thermal resistance of 1N6271A-E3/54 affect PCB layout?
With a typical RθJA of 75 °C/W, the 1N6271A-E3/54 requires adequate copper pour area and short thermal paths to ambient. For repeated surges, mounting near ground planes or adding thermal vias improves heat dissipation - critical to maintain TJ ≤175 °C and avoid derating above 25 °C ambient.
1N6271A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- 1.5KE
1N6271A-E3/54 FAQ
1.How can I place an order for 1N6271A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6271A-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 1N6271A-E3/54 reliable?
The price and inventory of 1N6271A-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 1N6271A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6271A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6271A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6271A-E3/54?
1N6271A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6271A-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 1N6271A-E3/54?
For technical support, including 1N6271A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6271A-E3/54 requirements.
6.How does Aetrix verify that 1N6271A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6271A-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 1N6271A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6271A-E3/54?
All 1N6271A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6271A-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 1N6271A-E3/54 part is unused and in its original packaging.
Return procedure for 1N6271A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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