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Vishay General Semiconductor - Diodes Division 1N6272A-E3/51
- Part No.:
- 1N6272A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6272A-E3/51.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,675
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Product details
Overview
1N6272A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 10.5–11.6 V breakdown voltage (VBR), 9.40 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 96.2 A peak pulse current (IPPM), and clamps to ≤15.6 V at rated surge. It is used in automotive power supply inputs, industrial sensor interfaces, and telecom line protection where fast-response, high-energy transient suppression is required.
For engineers reviewing the 1N6272A-E3/51 datasheet, 1N6272A-E3/51 pinout, 1N6272A-E3/51 application, or 1N6272A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, polarity marking guidance, clamping performance curves, and direct alternatives with documented functional trade-offs for ESD and lightning surge protection design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform, with thermal derating governed by RθJA = 75 °C/W and RθJL = 15.4 °C/W.
The device operates across –55 °C to +175 °C junction temperature, supports 200 A non-repetitive forward surge (8.3 ms half-sine), and exhibits 5.0 V max forward voltage at 100 A - consistent with the 1.5KE250A+ family tier per datasheet Note (3).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 9.40 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| IPPM | 96.2 A - peak surge current it safely clamps at 1500 W (10/1000 µs), critical for IEC 61000-4-5 Level 4 compliance |
| VC | ≤15.6 V - maximum clamped voltage during full-rated surge, defining protected circuit's worst-case overvoltage exposure |
| PPPM | 1500 W - single-pulse energy handling capacity, enabling robust protection against lightning-induced transients |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| Leakage (ID) | ≤5.0 µA at VWM - ensures negligible standby power loss and no interference with high-impedance sensing circuits |
Pinout & Package
1N6272A-E3/51 is housed in the industry-standard axial-leaded Case Style 1.5KE package (JEDEC DO-201AD), with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction or reverse clamping | Connected to ground or low-impedance return path; must handle full surge current without trace heating |
| Cathode (banded end) | Current exit point during clamping; defines polarity reference | Connected to protected line (e.g., 12 V rail); band orientation must match PCB silkscreen to prevent misassembly |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse rating (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment up to Level 4 |
| Sub-nanosecond response time | Clamps transients before sensitive ICs (e.g., microcontrollers, CAN transceivers) experience damaging overvoltage |
| AEC-Q101 qualification (HE3 variant only) | Confirms suitability for automotive applications when specified as 1N6272AHE3/XX; standard E3 is commercial grade |
| RoHS-compliant (E3 suffix) | Meets JESD 201 Class 1A whisker resistance, ensuring solder joint integrity in reflow and thermal cycling |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing >100 A surges within <1 ns. Use Value: Limits rail voltage to ≤15.6 V during 1500 W transients, preventing damage to downstream LDOs and MCU power pins. |
Use Scenario: 4–20 mA analog sensor outputs routed through long cables in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional shunt protector on signal line-to-ground, triggered only during negative-going transients. Use Value: Maintains signal integrity by clamping induced surges to <16 V while adding <5 µA leakage at 9.4 V operating point. |
| Telecom DSL Line Interface | Consumer Appliance Motor Drive Control |
Use Scenario: RJ-11 telephone line interface in DSL modems subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS on tip/ring lines referenced to chassis ground, suppressing differential and common-mode spikes. Use Value: Withstands 10/1000 µs surges up to 96.2 A while maintaining ≤15.6 V clamp, protecting PHY transceivers and isolation transformers. |
Use Scenario: H-bridge gate driver supply rail in washing machine motor controllers experiencing inductive kickback. IC Role / Device Role / Timing Role: Rail-to-ground TVS on 15 V VDD supply, activated during MOSFET turn-off voltage spikes. Use Value: Clamps 1500 W transients without degradation, preserving gate driver functionality and preventing shoot-through failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ11A | Same VBR range (10.5–12.1 V), but lower PPPM (400 W), SMC package (surface-mount), higher VC (18.2 V) | Suitable for space-constrained PCBs; insufficient for IEC 61000-4-5 Level 4 due to lower energy rating | Select when board area is limited and surge threat level is ≤Level 2; verify layout thermal relief for 400 W dissipation. |
| ON Semiconductor 1.5KE11A | Identical electrical specs (VBR, VWM, VC, PPPM), same DO-201AD package, RoHS-compliant E3 variant available | Drop-in replacement with identical footprint, polarity marking, and surge performance; qualified to AEC-Q101 in HE3 version | Use for dual-sourcing or second-source assurance; confirm manufacturer-specific qualification status (e.g., AEC-Q101) matches system requirements. |
Compared with 1N6272A-E3/51, SMAJ11A offers compact SMT packaging but sacrifices 73 % peak power handling and clamps 2.6 V higher - limiting its use to lower-threat environments. In contrast, 1.5KE11A delivers identical protection performance and mechanical compatibility, making it a validated functional alternative for continuity or supply chain diversification.
Availability
1N6272A-E3/51 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line protection, telecom DSL line interface, and consumer appliance motor drive control requiring stable component supply across production lifecycles.
Supply support for 1N6272A-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, power handling, and automotive-grade qualification.
The 1N6272A-E3/51 belongs to Vishay's TRANSZORB® TVS diode family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes include lightning, ESD, and inductive switching.
FAQ
What is the breakdown voltage tolerance for 1N6272A-E3/51?
The 1N6272A-E3/51 has a guaranteed breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current (IT), corresponding to a ±5 % tolerance around the nominal 11 V rating. This tight VBR window ensures predictable clamping onset without premature conduction during normal operation, and is confirmed in the Vishay 88301 datasheet Table on page 2.
Is 1N6272A-E3/51 suitable for automotive applications?
The 1N6272A-E3/51 is commercial-grade and RoHS-compliant (E3 suffix), but not AEC-Q101 qualified. For automotive use, specify the 1N6272AHE3/XX variant (e.g., 1N6272AHE3_B), which carries AEC-Q101 qualification per datasheet Note (2). The 1N6272A-E3/51 itself is appropriate for non-safety-critical consumer or industrial systems only.
What is the maximum clamping voltage of 1N6272A-E3/51 at rated surge current?
The 1N6272A-E3/51 clamps to a maximum of 15.6 V at its rated peak pulse current of 96.2 A (10/1000 µs waveform), as specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay 88301 datasheet. This value defines the upper voltage limit imposed on protected circuitry during full-rated transient events.
Does 1N6272A-E3/51 have bidirectional capability?
No, 1N6272A-E3/51 is strictly unidirectional. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE11CA). The "A" suffix denotes unidirectional construction, with polarity indicated by a cathode band - critical for correct placement in series with the protected line.
What package type does 1N6272A-E3/51 use, and what are its key mechanical features?
The 1N6272A-E3/51 uses the axial-leaded JEDEC DO-201AD (Case Style 1.5KE) package: molded epoxy body meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, and 0.375" (9.5 mm) lead length. Its dimensions and thermal resistance values (RθJA = 75 °C/W, RθJL = 15.4 °C/W) are documented in the "PACKAGE OUTLINE DIMENSIONS" section on page 5 of the Vishay 88301 datasheet.
1N6272A-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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
1N6272A-E3/51 FAQ
1.How can I place an order for 1N6272A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6272A-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 1N6272A-E3/51 reliable?
The price and inventory of 1N6272A-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 1N6272A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6272A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6272A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6272A-E3/51?
1N6272A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6272A-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 1N6272A-E3/51?
For technical support, including 1N6272A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6272A-E3/51 requirements.
6.How does Aetrix verify that 1N6272A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6272A-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 1N6272A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6272A-E3/51?
All 1N6272A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6272A-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 1N6272A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6272A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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