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

Vishay General Semiconductor - Diodes Division SA14C-E3/54

Name: SA14C-E3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA14C-E3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA14C-E3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SA14C-E3/54.pdf

Description:: TVS DIODE 14VWM 25.8VC DO204AC

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Product details

Overview

SA14C-E3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 14 V stand-off voltage (V_WM), 15.6–17.2 V breakdown voltage (V_BR) at 1 mA, 500 W peak pulse power (10/1000 µs), and clamps to ≤23.2 V at 21.6 A peak pulse current - used in automotive sensor interface protection and industrial I/O line surge suppression.

For engineers reviewing the SA14C-E3/54 datasheet, SA14C-E3/54 pinout, SA14C-E3/54 application, or SA14C-E3/54 equivalent, this page delivers verified electrical parameters, bi-directional TVS behavior, AEC-Q101 qualification status, DO-15 mechanical data, and real-world design context for ESD and lightning-induced transient suppression in 12 V automotive and industrial control systems.

Technical Context

The SA14C-E3/54 operates as a bi-directional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable V_BR tolerance (±5 %) and low incremental surge resistance, critical for consistent clamping under repetitive transients.

It complies with AEC-Q101 stress testing for automotive use and supports 175 °C maximum junction temperature, allowing deployment in under-hood environments. The device exhibits no polarity marking (per bi-directional specification), and its 10/1000 µs waveform rating reflects standardized surge immunity per R.E.A. definitions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	14 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; sets operating margin below clamping threshold.
V_BR (min/max)	15.6 V / 17.2 V at 1 mA - Confirmed breakdown range defining turn-on consistency across production lots.
V_C @ I_PPM	23.2 V at 21.6 A - Clamped voltage during 500 W transient; determines protected circuit's maximum overvoltage exposure.
P_PPM	500 W (10/1000 µs) - Peak surge energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3.
I_FSM	Not applicable - Bi-directional configuration excludes forward surge rating; only uni-directional variants specify 70 A I_FSM.
T_J max	175 °C - Enables reliable operation in high-ambient environments such as engine control units and motor drive PCBs.
Package	DO-204AC (DO-15) - Standard through-hole outline with 0.300" lead spacing; compatible with legacy wave-solder and hand-solder processes.

Pinout & Package

DO-204AC (DO-15) package: axial-leaded, molded epoxy case meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; no polarity marking (bi-directional).

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Bi-directional avalanche junction	No functional distinction between leads; either terminal serves as cathode or anode depending on transient polarity - eliminates orientation errors during assembly.

Key Features

Feature	Design Value
Glass-passivated chip junction	Ensures stable V_BR and low leakage (<1 µA at V_WM) across temperature and lifetime, critical for long-term reliability in unattended systems.
500 W peak pulse power (10/1000 µs)	Validates robustness against automotive load dump and inductive switching events per ISO 7637-2 without derating.
AEC-Q101 qualified	Confirms qualification for automotive applications including temperature cycling, HTRB, and ESD testing - required for Tier 1 supply chain acceptance.
Low incremental clamping resistance	Enables tight V_C – V_BR spread (ΔV = 7.6 V), minimizing voltage overshoot during fast-rising transients like ESD.

Applications

Automotive Sensor Interface Protection	Industrial PLC Digital Input Protection
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Standby clamping element placed between signal line and ground, responding within <1 ns to divert >20 A surges away from sensitive IC inputs. Use Value: Maintains signal integrity by limiting transient voltage to ≤23.2 V while surviving repeated 500 W pulses - extends MCU and transceiver lifetime in harsh electrical environments.	Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input optocoupler stage, absorbing 10/1000 µs transients induced by inductive load switching. Use Value: Prevents false triggering and latch-up in input conditioning circuits by clamping to 23.2 V with sub-100 ps response - meets IEC 61000-4-4 Level 4 immunity requirements.
Telecom Line Interface Protection	Consumer Appliance Motor Drive Protection
Use Scenario: Shielding RS-485/RS-232 transceivers in base station backhaul modules from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional shunt protector on differential pair, symmetrically clamping positive and negative transients to common ground reference. Use Value: Eliminates need for dual uni-directional devices; reduces BOM count and PCB area while maintaining ±23.2 V clamping symmetry - simplifies layout for balanced signaling.	Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) transient suppressor across motor terminals and controller power rails to prevent reset or latch-up. Use Value: Withstands 175 °C junction temperature and repeated 500 W surges - enables direct placement near motor drivers without thermal derating concerns.

Automotive Sensor Interface Protection

Industrial PLC Digital Input Protection

Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in 12 V vehicle subsystems.

IC Role / Device Role / Timing Role: Standby clamping element placed between signal line and ground, responding within <1 ns to divert >20 A surges away from sensitive IC inputs.

Use Value: Maintains signal integrity by limiting transient voltage to ≤23.2 V while surviving repeated 500 W pulses - extends MCU and transceiver lifetime in harsh electrical environments.

Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input optocoupler stage, absorbing 10/1000 µs transients induced by inductive load switching.

Use Value: Prevents false triggering and latch-up in input conditioning circuits by clamping to 23.2 V with sub-100 ps response - meets IEC 61000-4-4 Level 4 immunity requirements.

Telecom Line Interface Protection

Consumer Appliance Motor Drive Protection

Use Scenario: Shielding RS-485/RS-232 transceivers in base station backhaul modules from lightning-induced surges on long cable runs.

IC Role / Device Role / Timing Role: Bi-directional shunt protector on differential pair, symmetrically clamping positive and negative transients to common ground reference.

Use Value: Eliminates need for dual uni-directional devices; reduces BOM count and PCB area while maintaining ±23.2 V clamping symmetry - simplifies layout for balanced signaling.

Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs.

IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) transient suppressor across motor terminals and controller power rails to prevent reset or latch-up.

Use Value: Withstands 175 °C junction temperature and repeated 500 W surges - enables direct placement near motor drivers without thermal derating concerns.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ14CA	Same V_WM (14 V), identical DO-214AC package, but lower P_PPM (400 W) and higher V_C (23.2 V → 25.5 V at same I_PPM).	Less suitable for ISO 7637-2 Pulse 5a where 500 W margin is required; better for space-constrained SMT layouts.	Select SMAJ14CA only if board area is constrained and surge energy is limited to ≤400 W.
1.5KE14CA	Higher P_PPM (1500 W), larger DO-201AE package, same V_WM/V_BR range, but slower response due to higher junction capacitance.	Preferred for high-energy lightning strikes (IEC 61000-4-5 Level 4), not optimal for fast ESD where low capacitance matters.	Choose 1.5KE14CA when protecting AC mains interfaces or high-power industrial drives requiring >1 kW surge handling.

Compared with SMAJ14CA and 1.5KE14CA, SA14C-E3/54 offers the optimal balance of 500 W capability, DO-15 through-hole compatibility, AEC-Q101 qualification, and low-clamp performance - making it the preferred choice for cost-sensitive, high-reliability automotive and industrial control applications where proven legacy packaging and qualification are mandatory.

Availability

SA14C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input stages, telecom line interfaces, and consumer appliance motor drive circuits requiring stable component supply and long-term manufacturability.

Supply support for SA14C-E3/54 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 passive components with emphasis on reliability, automotive qualification, and industrial-grade performance.

The SAxxC series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, bi-directional transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping behavior are non-negotiable.

FAQ

What is the polarity configuration of SA14C-E3/54?

The SA14C-E3/54 is a bi-directional TVS diode with symmetrical avalanche characteristics in both directions. It has no polarity marking on the DO-15 package, and either lead may serve as anode or cathode depending on transient polarity - eliminating orientation-dependent assembly errors and simplifying layout for AC-coupled or floating signal lines.

Does SA14C-E3/54 meet AEC-Q101 requirements?

Yes, SA14C-E3/54 is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 88378, Revision: 18-Sep-12). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and electrical stress is critical.

What is the maximum clamping voltage of SA14C-E3/54 under surge conditions?

The SA14C-E3/54 clamps to a maximum of 23.2 V at its rated peak pulse current of 21.6 A (10/1000 µs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - ensuring downstream ICs like microcontrollers or transceivers remain within safe operating voltage margins.

Can SA14C-E3/54 be used in place of a uni-directional TVS like SA14A?

No - SA14C-E3/54 is bi-directional and lacks a defined cathode marking, whereas SA14A is uni-directional with a band-marked cathode. Substituting SA14C-E3/54 for SA14A in DC-biased circuits may cause unintended conduction during normal operation. Use SA14C-E3/54 only in AC, floating, or bidirectionally referenced applications where polarity independence is required.

What is the RoHS and whisker-test status of SA14C-E3/54?

SA14C-E3/54 is RoHS-compliant (per Directive 2011/65/EU) and meets JESD 201 Class 1A whisker test requirements, as indicated by the "E3" suffix. This confirms its suitability for commercial and automotive applications where lead-free soldering and long-term intermetallic stability are mandated - with matte tin plating validated per J-STD-002 and JESD 22-B102.

SA14C-E3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

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):: 19.4A

Power - Peak Pulse:: 500W

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:: DO-204AC (DO-15)

SA14C-E3/54 FAQ

1.How can I place an order for SA14C-E3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA14C-E3/54 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 SA14C-E3/54 reliable?

The price and inventory of SA14C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA14C-E3/54 is usually 5 days.

3.What payment methods are accepted for SA14C-E3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14C-E3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA14C-E3/54?

SA14C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA14C-E3/54 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 SA14C-E3/54?

For technical support, including SA14C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14C-E3/54 requirements.

6.How does Aetrix verify that SA14C-E3/54 is sourced from the original manufacturer or authorized distributors?

All SA14C-E3/54 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 SA14C-E3/54 meets industry standards.

7.What is the process for return or replacement of SA14C-E3/54?

All SA14C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14C-E3/54, 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 SA14C-E3/54 part is unused and in its original packaging.

Return procedure for SA14C-E3/54:

1.Submit a request within 90 days.

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

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