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Vishay General Semiconductor - Diodes Division 1N6270AHE3/51
- Part No.:
- 1N6270AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6270AHE3/51.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,075
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Product details
Overview
1N6270AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 8.65 V to 9.55 V breakdown voltage range at 1.0 mA test current, 7.78 V maximum stand-off voltage, 13.4 V clamping voltage at 112 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in power supply input stages and automotive sensor interfaces.
For engineers reviewing the 1N6270AHE3/51 datasheet, 1N6270AHE3/51 pinout, 1N6270AHE3/51 application, or 1N6270AHE3/51 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, RoHS-compliant HE3 suffix (JESD 201 Class 2 whisker test), and uni-directional polarity with cathode band marking - critical for automotive-grade ESD and load-dump protection design.
Technical Context
This TVS diode operates as a fast-acting shunt protector that clamps transient overvoltages above its breakdown threshold while maintaining low leakage (<50 µA at 7.78 V). Its glass-passivated junction enables sub-nanosecond response time and stable performance across -55 °C to +175 °C operating range.
The device uses a DO-201AD package with axial leads, delivering 1500 W surge handling per IEC 61000-4-5 (10/1000 µs) and supports repetitive surge events at ≤0.01% duty cycle. Thermal resistance is 15.4 °C/W junction-to-lead, enabling direct PCB mounting without heatsink for typical automotive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA - defines precise clamping initiation threshold for reliable overvoltage detection |
| Stand-off Voltage VWM | 7.78 V max - ensures no conduction during normal 5 V or 9 V rail operation, preventing false triggering |
| Clamping Voltage VC | 13.4 V at 112 A IPPM - limits downstream voltage stress to safe levels during 1500 W transient events |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy surges common in automotive load-dump and inductive switching |
| Max Reverse Leakage ID | 50 µA at VWM - minimizes standby power loss and avoids interference in low-current sensor circuits |
| Junction Temperature Range | -55 °C to +175 °C - supports under-hood automotive deployment and industrial environments with wide thermal swings |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems requiring reliability certification per JESD22-A108 |
Pinout & Package
Package: DO-201AD (axial lead, molded epoxy body, UL 94 V-0 rated). Cathode indicated by color band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path; enables standard uni-directional clamp configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., battery feed); color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term stability and low parameter drift under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Handles automotive load-dump pulses (ISO 7637-2 Pulse 5a) without degradation or failure |
| AEC-Q101 qualification | Validated for automotive use including HTOL, TC, UHAST, and ESD testing per JEDEC standards |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 10605 ESD) |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, supporting automated assembly processes |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and 100 ms duration. IC Role / Device Role: Primary shunt TVS placed between battery rail and system input filter. Use Value: Clamps peak voltage to ≤13.4 V during 112 A surge, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to long harnesses in factory automation. IC Role / Device Role: Line-end TVS on signal lines exposed to inductive switching noise and ESD. Use Value: Sub-nanosecond response suppresses fast transients before they reach precision ADC inputs, preserving measurement integrity. |
| Consumer Power Adapter Input Stage | Telecom Equipment Surge Protection |
Use Scenario: Input-stage protection for universal-input AC/DC adapters subjected to line surges per IEC 61000-4-5 Level 3. IC Role / Device Role: First-line defense before bridge rectifier and bulk capacitor. Use Value: Absorbs 1500 W surges without thermal runaway, enabling compact adapter designs with reduced derating margin. |
Use Scenario: Ethernet port protection in PoE-powered switches exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role: Uni-directional clamp on DC bias line feeding powered devices. Use Value: Maintains 7.78 V stand-off during normal 48 V PoE operation while clamping induced spikes to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | DO-214AA package; lower 600 W PPPM; 9.0 V nominal VBR; higher 1.5 V clamping overhead | Better suited for space-constrained PCBs but insufficient for full automotive load-dump compliance | Select when board area is critical and surge energy is limited to ≤600 W (e.g., consumer USB ports) |
| 1.5KE9.1A | Same DO-201AD package and electrical specs; differs only in packaging suffix (E3 vs HE3) - lacks AEC-Q101 qualification | Acceptable for commercial-grade applications but not certified for automotive production use | Choose only for non-automotive designs where AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
Compared with SMBJ9.0A, 1N6270AHE3/51 delivers 2.5× higher surge power handling and automotive qualification; compared with 1.5KE9.1A, it adds AEC-Q101 validation and enhanced whisker resistance - making it the sole option for Tier-1 automotive ECU designs requiring full compliance.
Availability
1N6270AHE3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power interface designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6270AHE3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1N6270AHE3/51 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure is not an option.
FAQ
What is the breakdown voltage tolerance of the 1N6270AHE3/51?
The 1N6270AHE3/51 has a specified breakdown voltage range of 8.65 V to 9.55 V at 1.0 mA test current, representing ±5% tolerance around the nominal 9.1 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable overvoltage detection in safety-critical circuits such as automotive body control modules. The 1N6270AHE3/51 maintains this specification across its full operating temperature range.
Is the 1N6270AHE3/51 suitable for automotive applications?
Yes, the 1N6270AHE3/51 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 175 °C maximum junction temperature, glass-passivated junction, and JESD 201 Class 2 whisker-resistant matte tin plating meet stringent automotive reliability requirements. The 1N6270AHE3/51 is commonly deployed in engine control units, ADAS camera modules, and infotainment power supplies to withstand load-dump and jump-start transients.
What is the clamping voltage of the 1N6270AHE3/51 at its rated peak pulse current?
The 1N6270AHE3/51 exhibits a maximum clamping voltage (VC) of 13.4 V at its rated peak pulse current (IPPM) of 112 A, measured using the standard 10/1000 µs double-exponential waveform. This low clamping ratio (VC/VBR ≈ 1.41) reflects high surge-handling efficiency and ensures protected ICs experience minimal overvoltage stress during worst-case transients - a key advantage of the 1N6270AHE3/51 in voltage-sensitive applications.
How does the HE3 suffix differ from the E3 suffix on Vishay TVS diodes?
The HE3 suffix on the 1N6270AHE3/51 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas the E3 suffix denotes RoHS compliance only (commercial grade, no automotive qualification). The 1N6270AHE3/51 therefore meets automotive reliability standards including HTOL, temperature cycling, and unbiased HAST - making it suitable for production vehicles where the base E3 version would be disqualified.
What package type does the 1N6270AHE3/51 use, and what are its key mechanical features?
The 1N6270AHE3/51 uses the DO-201AD axial-leaded package with molded epoxy body meeting UL 94 V-0 flammability rating. Key mechanical features include 0.375" (9.5 mm) lead length, 0.210"–0.285" body diameter, and cathode identification via color band. Its thermal resistance is 15.4 °C/W junction-to-lead, enabling effective heat dissipation directly through leads into PCB copper - a critical design factor for the 1N6270AHE3/51 in high-reliability applications.
1N6270AHE3/51 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- 1.5KE
1N6270AHE3/51 FAQ
1.How can I place an order for 1N6270AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6270AHE3/51 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 1N6270AHE3/51 reliable?
The price and inventory of 1N6270AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6270AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6270AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6270AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6270AHE3/51?
1N6270AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6270AHE3/51 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 1N6270AHE3/51?
For technical support, including 1N6270AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6270AHE3/51 requirements.
6.How does Aetrix verify that 1N6270AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6270AHE3/51 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 1N6270AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6270AHE3/51?
All 1N6270AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6270AHE3/51, 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 1N6270AHE3/51 part is unused and in its original packaging.
Return procedure for 1N6270AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6270AHE3/51 Tags
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