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

Vishay General Semiconductor - Diodes Division SMAJ14C-E3/61

Name: SMAJ14C-E3/61
Brand: Vishay General Semiconductor - Diodes Division
SKU: SMAJ14C-E3/61
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMAJ14C-E3/61

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: SMAJ14C-E3/61.pdf

Description:: TVS DIODE 14VWM 25.8VC DO214AC

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Product details

Overview

SMAJ14C-E3/61 from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features 14 V stand-off voltage (V_WM), 25.8 V maximum clamping voltage (V_C) at 15.5 A peak pulse current (I_PPM), and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces against ESD and inductive switching surges.

For engineers reviewing the SMAJ14C-E3/61 datasheet, SMAJ14C-E3/61 pinout, SMAJ14C-E3/61 application, or SMAJ14C-E3/61 equivalent, this device serves as a RoHS-compliant, MSL Level 1 rated TVS diode optimized for automated placement in consumer, industrial, and automotive electronics where bidirectional overvoltage protection at 14 V nominal is required.

Technical Context

The SMAJ14C-E3/61 operates as a bi-directional avalanche breakdown device with symmetrical clamping characteristics in both polarities. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, enabling fast response to transients under 1 ns.

Rated for -55 °C to +150 °C operating junction temperature, it delivers 400 W peak pulse power (derated to 300 W above 78 V) on 0.2 × 0.2" copper pads and maintains ≤1.0 µA reverse leakage at V_WM, supporting reliable protection in low-power signal paths without DC loading.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	14 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems.
V_C @ I_PPM	25.8 V - Clamped voltage during 15.5 A transient; limits downstream component stress to <26 V under worst-case surge.
I_PPM	15.5 A - Peak surge current capability with 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) compliance when properly laid out.
P_PPM	400 W - Peak pulse power dissipation; enables robust protection against repetitive transients in industrial control inputs.
Junction Temp Range	-55 °C to +150 °C - Wide thermal envelope allows use in under-hood automotive or high-ambient industrial environments.
Package	DO-214AC (SMA) - Standard surface-mount outline compatible with automated pick-and-place; JEDEC-compliant footprint.

Pinout & Package

DO-214AC (SMA) package: bi-directional device with no polarity marking; symmetrical terminals function identically in either orientation.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (both)	Transient conduction path	Bi-directional avalanche junction - conducts surge current equally in both directions when V_WM exceeded.

Key Features

Feature	Design Value
Bi-directional clamping	Enables single-device protection of AC-coupled or floating signal lines without polarity concerns.
400 W peak pulse power	Supports high-energy transients per IEC 61000-4-5 while maintaining low clamping voltage.
MSL Level 1 rating	Allows unlimited floor life and reflow at 260 °C peak - eliminates moisture sensitivity handling constraints.
Glass-passivated junction	Ensures long-term stability of breakdown voltage and leakage performance across temperature and life cycles.

Applications

Automotive Sensor Interface	Industrial PLC Input Protection
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamping element placed at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤25.8 V, preventing latch-up or gate oxide damage in 12 V automotive electronics.	Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or optocoupler input stage, operating in parallel with series impedance. Use Value: Withstands 400 W surges while adding <1.0 µA leakage at 14 V - avoids false triggering in high-impedance sensing circuits.
Consumer USB Port ESD Protection	Telecom Line Card Surge Suppression
Use Scenario: Secondary-level protection on USB 2.0 data lines (D+/D−) after primary ESD array, targeting system-level IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Fast-response bi-directional clamp absorbing residual energy that bypasses front-end polymer TVS or integrated ESD diodes. Use Value: Sub-1 ns response and 25.8 V clamping prevent data corruption or PHY damage during multi-kV ESD events.	Use Scenario: Protecting Ethernet PHY interface or analog telephony line drivers (e.g., SLIC outputs) from lightning-induced surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor placed between transformer secondary and line driver IC, referenced to local ground. Use Value: 14 V V_WM aligns with common telecom bias rails; 400 W rating handles repeated 10/1000 µs surges without degradation.

Automotive Sensor Interface

Industrial PLC Input Protection

Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses.

IC Role / Device Role / Timing Role: Bi-directional TVS clamping element placed at connector entry point to shunt surge energy before reaching signal conditioning circuitry.

Use Value: Limits transient voltage to ≤25.8 V, preventing latch-up or gate oxide damage in 12 V automotive electronics.

Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or optocoupler input stage, operating in parallel with series impedance.

Use Value: Withstands 400 W surges while adding <1.0 µA leakage at 14 V - avoids false triggering in high-impedance sensing circuits.

Consumer USB Port ESD Protection

Telecom Line Card Surge Suppression

Use Scenario: Secondary-level protection on USB 2.0 data lines (D+/D−) after primary ESD array, targeting system-level IEC 61000-4-2 ±15 kV contact discharge.

IC Role / Device Role / Timing Role: Fast-response bi-directional clamp absorbing residual energy that bypasses front-end polymer TVS or integrated ESD diodes.

Use Value: Sub-1 ns response and 25.8 V clamping prevent data corruption or PHY damage during multi-kV ESD events.

Use Scenario: Protecting Ethernet PHY interface or analog telephony line drivers (e.g., SLIC outputs) from lightning-induced surges per ITU-T K.20/K.21.

IC Role / Device Role / Timing Role: Standoff-rated transient suppressor placed between transformer secondary and line driver IC, referenced to local ground.

Use Value: 14 V V_WM aligns with common telecom bias rails; 400 W rating handles repeated 10/1000 µs surges without degradation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ14CA-E3/61	Identical electrical specs and packaging; CA suffix denotes same bi-directional construction as C variant per Vishay documentation.	No functional difference - CA and C suffixes are interchangeable for SMAJ14 bi-directional types per Document 88390.	Select SMAJ14CA-E3/61 only if legacy BOM or distributor inventory mandates CA suffix; otherwise SMAJ14C-E3/61 is fully equivalent.
SMCJ14C-E3/61	Same V_WM (14 V) and V_C (25.8 V), but higher 1500 W peak power rating in larger DO-214AB (SMC) package.	Used where higher surge energy handling is needed (e.g., mains-connected equipment); requires PCB layout change due to larger footprint.	Choose SMCJ14C-E3/61 only when 400 W is insufficient and board space permits DO-214AB; SMAJ14C-E3/61 remains optimal for space-constrained 400 W applications.

Compared with SMAJ14CA-E3/61, the SMAJ14C-E3/61 offers identical protection performance in the same DO-214AC package, while SMCJ14C-E3/61 provides 3.75× higher pulse power at the cost of larger size - making SMAJ14C-E3/61 the preferred choice for compact, cost-sensitive 400 W-rated designs.

Availability

SMAJ14C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, consumer USB port protection, and telecom line card surge suppression requiring stable component supply and RoHS-compliant sourcing.

Supply support for SMAJ14C-E3/61 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, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.

The SMAJ series is engineered for surface-mount transient voltage suppression in space-constrained, high-reliability applications - delivering consistent clamping performance across automotive, industrial, and communications equipment.

FAQ

What is the clamping voltage of SMAJ14C-E3/61 under peak surge conditions?

The SMAJ14C-E3/61 has a maximum clamping voltage (V_C) of 25.8 V at 15.5 A peak pulse current (I_PPM) with a 10/1000 µs waveform. This value is measured per Figure 1 and Table 1 in Vishay Document 88390 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMAJ14C-E3/61 maintains this clamping performance across its full operating temperature range.

Is SMAJ14C-E3/61 unidirectional or bidirectional?

SMAJ14C-E3/61 is a bi-directional Transient Voltage Suppressor, as confirmed by the "C" suffix and explicit listing under "DEVICES FOR BI-DIRECTION APPLICATIONS" in Vishay Document 88390. Its electrical characteristics apply identically in both polarities, with no cathode band marking on the DO-214AC package. This makes SMAJ14C-E3/61 suitable for AC signal lines or floating nodes where polarity is undefined.

What is the maximum operating temperature for SMAJ14C-E3/61?

The SMAJ14C-E3/61 has a specified operating junction and storage temperature range of -55 °C to +150 °C, per the "MAXIMUM RATINGS" table in Vishay Document 88390. This wide thermal envelope supports deployment in under-hood automotive locations, industrial motor drives, and other high-ambient environments where sustained operation near 150 °C may occur.

Does SMAJ14C-E3/61 meet RoHS and MSL requirements?

Yes, SMAJ14C-E3/61 is RoHS 2002/95/EC compliant and rated MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. These qualifications are explicitly stated in the "FEATURES" section of Vishay Document 88390 and verified in the "ORDERING INFORMATION" table. The E3 suffix confirms commercial-grade RoHS compliance for SMAJ14C-E3/61.

What is the reverse leakage current of SMAJ14C-E3/61 at its stand-off voltage?

At its 14 V stand-off voltage (V_WM), the SMAJ14C-E3/61 exhibits a maximum reverse leakage current (I_D) of 1.0 µA at 25 °C, as specified in the "ELECTRICAL CHARACTERISTICS" table of Vishay Document 88390. This low leakage ensures minimal power loss and signal interference in high-impedance protection configurations, preserving accuracy in precision analog or low-power sensor circuits.

SMAJ14C-E3/61 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-214AC, SMA

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: -

Bidirectional Channels:: 1

Voltage - Reverse Standoff (Typ):: 14V

Voltage - Breakdown (Min):: 15.6V

Voltage - Clamping (Max) @ Ipp:: 25.8V

Current - Peak Pulse (10/1000µs):: 15.5A

Power - Peak Pulse:: 400W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

SMAJ14C-E3/61 FAQ

1.How can I place an order for SMAJ14C-E3/61 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMAJ14C-E3/61 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 SMAJ14C-E3/61 reliable?

The price and inventory of SMAJ14C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ14C-E3/61 is usually 5 days.

3.What payment methods are accepted for SMAJ14C-E3/61?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ14C-E3/61 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMAJ14C-E3/61?

SMAJ14C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMAJ14C-E3/61 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 SMAJ14C-E3/61?

For technical support, including SMAJ14C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ14C-E3/61 requirements.

6.How does Aetrix verify that SMAJ14C-E3/61 is sourced from the original manufacturer or authorized distributors?

All SMAJ14C-E3/61 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 SMAJ14C-E3/61 meets industry standards.

7.What is the process for return or replacement of SMAJ14C-E3/61?

All SMAJ14C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ14C-E3/61, 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 SMAJ14C-E3/61 part is unused and in its original packaging.

Return procedure for SMAJ14C-E3/61:

1.Submit a request within 90 days.

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

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