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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division 1N6276A-E3/51

Name: 1N6276A-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 1N6276A-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N6276A-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-201AA, DO-27, Axial

Datasheet:: 1N6276A-E3/51.pdf

Description:: TVS DIODE 13.6VWM 22.5VC 1.5KE

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Product details

Overview

1N6276A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 16 V breakdown voltage (V_BR = 15.2–16.8 V at 1.0 mA), 13.6 V stand-off voltage (V_WM), 22.5 V clamping voltage (V_C) at 66.7 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.

For engineers reviewing the 1N6276A-E3/51 datasheet, 1N6276A-E3/51 pinout, 1N6276A-E3/51 application, or 1N6276A-E3/51 equivalent, this device is evaluated for robust transient suppression in automotive power supplies, industrial I/O protection, and telecom line interface circuits where fast response (<1 ns), low clamping ratio, and AEC-Q101-compliant variants are critical selection criteria.

Technical Context

This unidirectional TVS diode operates as a voltage-clamped shunt protector, triggering when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable V_BR tolerance (±5%), low incremental surge resistance, and repeatable clamping performance under repetitive 10/1000 µs transients at 0.01% duty cycle.

Designed for PCB-level surge immunity, it delivers sub-nanosecond response time and clamps transients to ≤22.5 V at 66.7 A - enabling reliable protection of 15 V logic rails and 12 V automotive systems without sacrificing signal integrity or forward conduction margin (V_F = 3.5 V at 100 A).

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR (min/max)	15.2 V / 16.8 V at 1.0 mA - defines precise turn-on threshold for 15 V nominal systems
V_WM	13.6 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA
V_C @ I_PPM	22.5 V at 66.7 A - clamping voltage limits downstream component stress during 1500 W surge
P_PPM	1500 W - peak pulse power handling per 10/1000 µs waveform, sufficient for IEC 61000-4-5 Level 4
I_PPM	66.7 A - peak pulse current capability directly supports 1.2/50 µs open-circuit & 8/20 µs short-circuit surge testing
T_J max	175 °C - enables operation in under-hood automotive environments and high-ambient industrial enclosures
Package	DO-201AD (Case Style 1.5KE) - industry-standard axial leaded package with 0.375" lead length, UL 94 V-0 rated epoxy

Pinout & Package

1N6276A-E3/51 uses a two-terminal axial DO-201AD package (Case Style 1.5KE). The cathode is marked by a color band on the body; polarity must be observed in series or parallel configurations.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction path / surge return path	Connected to ground or low-impedance return node; carries full surge current during clamping
Cathode	Protected line connection / high-side clamp node	Connected to the line being protected (e.g., 12 V rail); reverse-biased during normal operation

Key Features

Feature	Design Value
Glass-passivated junction	Ensures ±5% V_BR tolerance and long-term stability under thermal cycling and humidity
1500 W peak pulse power (10/1000 µs)	Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment
Clamping ratio (V_C/V_BR) ≈ 1.42	Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up in protected ICs
Response time < 1 ns	Activates before most ESD or lightning-induced transients fully develop, preserving signal path integrity
RoHS-compliant matte tin plating	Supports lead-free reflow and wave soldering per J-STD-002/JESD 22-B102, with JESD 201 Class 1A whisker resistance

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator surge events per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, triggered within <1 ns upon overvoltage detection. Use Value: Clamps transients to ≤22.5 V, preventing damage to 16 V-rated DC-DC converters and microcontrollers without derating system voltage margins.	Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected across input terminals to divert induced transients before reaching precision op-amps and ADC front-ends. Use Value: Limits voltage excursion to 22.5 V during 1 kV/0.5 µs surge, maintaining signal fidelity and avoiding saturation or reset of measurement circuitry.
Telecom Line Interface Protection	Consumer Power Adapter Output Protection
Use Scenario: Secondary-side surge protection on POTS or DSL line interface cards subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between tip/ring and ground to absorb differential-mode surges up to 1500 W. Use Value: Maintains 13.6 V working voltage while clamping to 22.5 V, ensuring compatibility with 15 V line driver ICs and avoiding false triggering.	Use Scenario: Output overvoltage protection in 15 V wall adapters for smart home hubs, preventing damage during regulator failure or feedback loop loss. IC Role / Device Role / Timing Role: Fast-acting shunt limiter across output capacitor, activated only during fault conditions exceeding 16.8 V. Use Value: Provides fail-safe shutdown margin with 1.2 V headroom below typical 16.8 V overvoltage trip thresholds of downstream USB-PD controllers.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator surge events per ISO 7637-2 Pulse 5a.

IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, triggered within <1 ns upon overvoltage detection.

Use Value: Clamps transients to ≤22.5 V, preventing damage to 16 V-rated DC-DC converters and microcontrollers without derating system voltage margins.

Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog modules exposed to field wiring surges.

IC Role / Device Role / Timing Role: Unidirectional TVS connected across input terminals to divert induced transients before reaching precision op-amps and ADC front-ends.

Use Value: Limits voltage excursion to 22.5 V during 1 kV/0.5 µs surge, maintaining signal fidelity and avoiding saturation or reset of measurement circuitry.

Telecom Line Interface Protection

Consumer Power Adapter Output Protection

Use Scenario: Secondary-side surge protection on POTS or DSL line interface cards subjected to lightning-induced common-mode transients.

IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between tip/ring and ground to absorb differential-mode surges up to 1500 W.

Use Value: Maintains 13.6 V working voltage while clamping to 22.5 V, ensuring compatibility with 15 V line driver ICs and avoiding false triggering.

Use Scenario: Output overvoltage protection in 15 V wall adapters for smart home hubs, preventing damage during regulator failure or feedback loop loss.

IC Role / Device Role / Timing Role: Fast-acting shunt limiter across output capacitor, activated only during fault conditions exceeding 16.8 V.

Use Value: Provides fail-safe shutdown margin with 1.2 V headroom below typical 16.8 V overvoltage trip thresholds of downstream USB-PD controllers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ16A	DO-214AA package (SMB), 16 V V_BR, 25.1 V V_C @ 47.8 A, 600 W P_PPM	Lower peak power and higher clamping voltage; suited for space-constrained PCBs with lower surge exposure	Select SMBJ16A when board area is limited and IEC 61000-4-5 Level 3 compliance suffices
1.5KE16A	Same DO-201AD package, identical electrical specs (V_BR, V_C, P_PPM), but non-RoHS commercial grade (E3 suffix denotes RoHS)	No AEC-Q101 qualification or JESD 201 whisker testing; intended for non-automotive commercial use	Choose 1.5KE16A only for cost-sensitive consumer applications where RoHS and automotive reliability are not required

Compared with SMBJ16A, 1N6276A-E3/51 delivers 2.5× higher surge power and tighter clamping, making it suitable for harsher environments; versus 1.5KE16A, it adds RoHS compliance and whisker-resistant terminations without electrical trade-offs.

Availability

1N6276A-E3/51 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line interface surge suppression requiring stable component supply across multi-year production cycles.

Supply support for 1N6276A-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive-grade qualification.

The 1N6276A-E3/51 belongs to Vishay's TRANSZORB® 1.5KE family - engineered for high-energy transient suppression in demanding environments including automotive, industrial control, and telecommunications infrastructure.

FAQ

What is the breakdown voltage range of the 1N6276A-E3/51?

The 1N6276A-E3/51 has a guaranteed breakdown voltage (V_BR) range of 15.2 V to 16.8 V at a test current of 1.0 mA. This tight ±5% tolerance ensures consistent clamping behavior across production lots and supports precise design margining for 15 V systems. The value is measured per JEDEC standard and validated at T_A = 25 °C.

Is the 1N6276A-E3/51 RoHS compliant and qualified for automotive use?

The 1N6276A-E3/51 carries the "E3" suffix, confirming RoHS compliance per EU Directive 2011/65/EU and material categorization per Vishay Doc. #99912. While the base 1N6276A-E3/51 is commercial-grade, AEC-Q101-qualified versions exist under the HE3 suffix (e.g., 1N6276AHE3_B). Always verify the full part number's qualification status via Vishay's official documentation before automotive deployment.

What is the maximum clamping voltage of the 1N6276A-E3/51 under surge conditions?

The 1N6276A-E3/51 clamps to a maximum of 22.5 V when subjected to its rated peak pulse current of 66.7 A using the standard 10/1000 µs waveform. This V_C value is measured per JEDEC Test Method and represents worst-case voltage seen by downstream components during surge events - critical for validating safe operating area of protected ICs.

Can the 1N6276A-E3/51 be used in bidirectional configurations?

No - the 1N6276A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and absence of "CA" in its designation. Bidirectional variants (e.g., 1N6276CA) exist in the same family but feature symmetrical clamping in both polarities. Using 1N6276A-E3/51 in reverse-biased AC applications risks catastrophic failure due to forward conduction during negative half-cycles.

What package type does the 1N6276A-E3/51 use, and what are its key mechanical properties?

The 1N6276A-E3/51 uses the DO-201AD package (Case Style 1.5KE), featuring an axial-leaded molded epoxy body rated UL 94 V-0. Leads are matte tin-plated per J-STD-002, with 0.375" (9.5 mm) lead length and 0.042" (1.07 mm) diameter. Thermal resistance is R_θJA = 75 °C/W and R_θJL = 15.4 °C/W, supporting reliable heat dissipation in free-air or lead-mounted layouts.

1N6276A-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):: 13.6V

Voltage - Breakdown (Min):: 15.2V

Voltage - Clamping (Max) @ Ipp:: 22.5V

Current - Peak Pulse (10/1000µs):: 66.7A

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

1N6276A-E3/51 FAQ

1.How can I place an order for 1N6276A-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N6276A-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 1N6276A-E3/51 reliable?

The price and inventory of 1N6276A-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 1N6276A-E3/51 is usually 5 days.

3.What payment methods are accepted for 1N6276A-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6276A-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N6276A-E3/51?

1N6276A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N6276A-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 1N6276A-E3/51?

For technical support, including 1N6276A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6276A-E3/51 requirements.

6.How does Aetrix verify that 1N6276A-E3/51 is sourced from the original manufacturer or authorized distributors?

All 1N6276A-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 1N6276A-E3/51 meets industry standards.

7.What is the process for return or replacement of 1N6276A-E3/51?

All 1N6276A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6276A-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 1N6276A-E3/51 part is unused and in its original packaging.

Return procedure for 1N6276A-E3/51:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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