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Vishay General Semiconductor - Diodes Division 1N6275A-E3/51
- Part No.:
- 1N6275A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6275A-E3/51.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,853
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Product details
Overview
1N6275A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 14.3–15.8 V breakdown voltage at 1.0 mA test current, 12.8 V maximum stand-off voltage, 21.2 V clamping voltage at 70.8 A peak pulse current, and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1N6275A-E3/51 datasheet, 1N6275A-E3/51 pinout, 1N6275A-E3/51 application, or 1N6275A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal derating behavior, and direct alternative options for circuit-level ESD and lightning transient suppression.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its 10/1000 µs waveform capability supports high-energy transients from inductive switching and lightning-induced surges, with clamping action effective before sensitive downstream ICs experience overstress.
The device complies with JEDEC standard 1.5KE case outline, features matte tin-plated leads solderable per J-STD-002, and meets RoHS requirements (E3 suffix). It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits a +0.084 %/°C temperature coefficient of breakdown voltage - enabling stable clamping across wide ambient operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 14.3–15.8 V at 1.0 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before protected circuit exceeds absolute maximum ratings |
| Stand-off Voltage VWM | 12.8 V max - maximum continuous reverse working voltage; sets safe DC operating margin below breakdown threshold |
| Clamping Voltage VC | 21.2 V at 70.8 A (10/1000 µs) - peak voltage seen by protected load during worst-case surge; determines stress on downstream MOSFETs or ICs |
| Peak Pulse Power PPPM | 1500 W - energy-handling capacity for standardized 10/1000 µs transient; enables protection against IEC 61000-4-5 Level 4 surges |
| Junction Temperature Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments without thermal shutdown |
| Thermal Resistance RθJL | 15.4 °C/W - low junction-to-lead resistance enables efficient heat transfer to PCB copper; critical for sustained surge duty cycles |
Pinout & Package
1N6275A-E3/51 is housed in the JEDEC-standardized 1.5KE molded epoxy package (Case Style 1.5KE), featuring axial-leaded construction with cathode band marking. The device has two terminals: anode and cathode - polarity is unidirectional, with the color band indicating the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in typical clamping configuration | Provides return path during transient conduction; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 12 V rail or signal input) | Acts as clamping node - voltage at this terminal is limited to ≤21.2 V during 70.8 A surge, protecting downstream components |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against high-energy transients including ISO 7637-2 pulse 5a/b and IEC 61000-4-5 combination wave surges |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or gas discharge tubes - ensuring protection before voltage-sensitive ICs experience overstress |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and J-STD-002 solderability standards; qualified for commercial-grade production use |
| 175 °C maximum junction temperature | Permits operation in high-temperature environments such as engine control units and industrial motor drives without thermal derating penalties |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges above 12.8 V. Use Value: Limits transient voltage to ≤21.2 V at 70.8 A, preventing damage to LDO regulators and microcontrollers rated for 28 V absolute maximum. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) in factory automation sensors subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast-rising transients before reaching op-amp input stage. Use Value: Sub-ns response ensures clamping occurs before 100 ns rise-time ESD pulses exceed op-amp input tolerance, preserving signal integrity. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: -48 V telecom power distribution boards encountering lightning-induced surges on outdoor lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (cathodes tied to -48 V rail) clamp both positive and negative excursions relative to ground. Use Value: 1500 W rating handles multi-kV induced surges; 175 °C rating supports operation inside sealed outdoor cabinets with minimal airflow. |
Use Scenario: USB 2.0 data lines (D+/D−) in portable electronics exposed to human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typical CJ < 100 pF at 0 V) placed inline to suppress ±8 kV contact discharge without signal distortion. Use Value: Clamping voltage ≤21.2 V prevents gate oxide rupture in USB transceivers while maintaining signal edge fidelity up to 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | DO-214AA (SMB) package; 15 V VBR min/max tighter (14.3–15.8 V same), 21.2 V VC at 71.5 A; lower RθJA (65 °C/W vs. 75 °C/W) | Better suited for surface-mount layouts with space constraints; slightly higher surge current rating but lower power density | Select SMBJ15A when board real estate is limited and reflow compatibility is required; verify thermal pad layout for 1500 W dissipation. |
| 1.5KE15A | Same 1.5KE package, identical VBR, VWM, VC, and PPPM; differs only in packaging suffix (E3/51 vs. standard E3) and reel quantity (1400 pcs vs. unspecified) | No functional difference; identical electrical and thermal performance; E3/51 denotes specific tape-and-reel delivery mode | 1.5KE15A is functionally interchangeable with 1N6275A-E3/51 in all circuits; choose based on logistics preference (reel size, traceability). |
Compared with 1N6275A-E3/51, SMBJ15A offers SMT compatibility and marginally improved thermal resistance but requires PCB redesign, while 1.5KE15A provides identical protection in the same through-hole package - making it a drop-in logistics alternative rather than a technical upgrade.
Availability
1N6275A-E3/51 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line hardening, telecom DC feed surge suppression, and consumer USB port ESD mitigation requiring stable component supply across extended production lifecycles.
Supply support for 1N6275A-E3/51 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, ruggedness, and industry-standard qualification.
The 1N6275A-E3/51 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience is mission-critical.
FAQ
What is the breakdown voltage range of the 1N6275A-E3/51?
The 1N6275A-E3/51 has a specified breakdown voltage (VBR) range of 14.3 V to 15.8 V at a test current of 1.0 mA. This range is measured per JEDEC standard and ensures consistent clamping initiation across production lots. The 1N6275A-E3/51 maintains this specification at TA = 25 °C and is temperature-compensated with a +0.084 %/°C coefficient - meaning VBR increases predictably with junction temperature.
Is the 1N6275A-E3/51 suitable for bidirectional transient suppression?
No, the 1N6275A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias to clamp positive transients on a line referenced to ground. For bidirectional protection, Vishay offers the 1N6275CA variant (not the 1N6275A-E3/51), which suppresses transients of either polarity - essential for AC-coupled or floating signal lines where voltage swings occur above and below ground.
What is the maximum clamping voltage of the 1N6275A-E3/51 under surge conditions?
The 1N6275A-E3/51 exhibits a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current of 70.8 A using the standardized 10/1000 µs waveform. This value represents the upper limit of voltage imposed on the protected circuit during worst-case surge events and is guaranteed across the full operating temperature range - critical for verifying compliance with downstream IC absolute maximum ratings.
Does the 1N6275A-E3/51 meet automotive qualification standards?
The base 1N6275A-E3/51 is RoHS-compliant and qualified for commercial-grade use. It is not AEC-Q101 qualified in this suffix configuration. However, Vishay offers the 1N6275AHE3_B variant (with HE3 suffix and revision code), which is explicitly AEC-Q101 qualified for automotive applications. Engineers requiring automotive-grade assurance must specify the HE3_B version - the 1N6275A-E3/51 itself is intended for industrial and telecom use where AEC-Q101 is not mandated.
How does the thermal resistance of the 1N6275A-E3/51 affect its surge handling capability?
The 1N6275A-E3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, enabling rapid heat transfer from the silicon die to the PCB copper via its axial leads. This low RθJL sustains the 1500 W peak pulse rating during repetitive surges, especially when leads are soldered to ≥1 cm² copper pour. Higher RθJL would elevate junction temperature, triggering thermal runaway or parametric shift - so proper PCB layout is essential for full 1N6275A-E3/51 performance.
1N6275A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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
1N6275A-E3/51 FAQ
1.How can I place an order for 1N6275A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6275A-E3/51 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 1N6275A-E3/51 reliable?
The price and inventory of 1N6275A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6275A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6275A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6275A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6275A-E3/51?
1N6275A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6275A-E3/51 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 1N6275A-E3/51?
For technical support, including 1N6275A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6275A-E3/51 requirements.
6.How does Aetrix verify that 1N6275A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6275A-E3/51 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 1N6275A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6275A-E3/51?
All 1N6275A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6275A-E3/51, 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 1N6275A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6275A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6275A-E3/51 Tags
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