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

Vishay General Semiconductor - Diodes Division SMA5J17-E3/61

Name: SMA5J17-E3/61
Brand: Vishay General Semiconductor - Diodes Division
SKU: SMA5J17-E3/61
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMA5J17-E3/61

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: SMA5J17-E3/61.pdf

Description:: TVS DIODE 17VWM 30.5VC DO214AC

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Product details

Overview

SMA5J17-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 17 V standoff voltage (V_WM), 18.9–20.9 V breakdown range (V_BR), 27.6 V clamping voltage (V_C) at 18.1 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.

For engineers reviewing the SMA5J17-E3/61 datasheet, SMA5J17-E3/61 pinout, SMA5J17-E3/61 application, or SMA5J17-E3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin leads, AEC-Q101 qualification, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.

Technical Context

This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold to divert surge energy away from protected circuitry. Its glass-passivated silicon junction ensures stable leakage performance (<1.0 µA at V_WM) and fast response time (<1 ns), critical for safeguarding MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.

The device is rated for 40 A non-repetitive forward surge current (I_FSM) and exhibits low incremental surge resistance, enabling effective suppression of high-energy transients without thermal runaway. Thermal resistance values (R_θJA = 80 °C/W, R_θJL = 25 °C/W) confirm suitability for board-level thermal management using standard PCB copper pad layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V systems.
V_BR (min/max)	18.9 V / 20.9 V - Measured at 1 mA test current; ensures reliable turn-on above nominal supply while avoiding false triggering.
V_C @ I_PPM	27.6 V at 18.1 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream 3.3 V or 5 V logic components.
P_PPM	500 W - Peak pulse power dissipation capability; supports protection against ISO 7637-2 Pulse 1/2a/5a in automotive environments.
I_FSM	40 A - Single half-sine surge rating (8.3 ms); validates robustness against motor load dump events.
T_J max	150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures without derating.
Package	DO-214AC (SMA) - Surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with JEDEC-standard reflow profiles.

Pinout & Package

DO-214AC (SMA) package: molded plastic case with two axial leads, cathode indicated by a band on one end. Matte tin-plated terminals meet J-STD-002 solderability and JESD 22-B102 mechanical integrity requirements. Molding compound complies with UL 94 V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point in forward bias	Connected to ground or lower-potential node in unidirectional TVS configuration; must be routed with low-inductance path for effective clamping.
Cathode (banded end)	Current exit point in forward bias; reverse-bias terminal	Connected to protected line (e.g., 12 V rail); band orientation must match PCB silkscreen to prevent installation error.

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable reverse leakage (<1.0 µA at V_WM) across -55 °C to +150 °C, critical for long-term reliability in harsh environments.
AEC-Q101 qualification	Validates performance under automotive-grade stress tests including temperature cycling, humidity bias HAST, and mechanical shock - required for engine control and body electronics.
MSL Level 1 (260 °C peak)	Enables single-reflow assembly without moisture sensitivity concerns; eliminates baking requirement prior to SMT placement.
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients (e.g., ESD >15 kV), preserving signal integrity on high-speed sensor lines.

Applications

Automotive Power Input Protection	Industrial Sensor Signal Line Clamp
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 27.6 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to <28 V, preventing latch-up or gate oxide damage during 100 V/400 ms load dump events.	Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt transients before reaching op-amp input stage. Use Value: Maintains signal fidelity by clamping sub-100 ns ESD pulses to <30 V while adding <1 pF capacitance - negligible impact on 10 kHz sensor bandwidth.
DC-DC Converter Input Stage	Motor Drive Gate Driver Protection
Use Scenario: Safeguarding buck converter inputs against voltage spikes caused by back-EMF from solenoid or relay switching. IC Role / Device Role / Timing Role: TVS connected across input capacitor to absorb inductive kickback energy. Use Value: Absorbs up to 500 W of transient power without degradation, extending capacitor lifetime and preventing controller reset due to overvoltage.	Use Scenario: Protecting high-side and low-side MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp gate-source overvoltage. Use Value: Prevents gate oxide breakdown by limiting V_GS to <28 V during dV/dt events, ensuring reliable 100 kHz PWM operation in BLDC inverters.

Automotive Power Input Protection

Industrial Sensor Signal Line Clamp

Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 27.6 V.

Use Value: Limits voltage seen by downstream LDOs and microcontrollers to <28 V, preventing latch-up or gate oxide damage during 100 V/400 ms load dump events.

Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events in factory automation.

IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt transients before reaching op-amp input stage.

Use Value: Maintains signal fidelity by clamping sub-100 ns ESD pulses to <30 V while adding <1 pF capacitance - negligible impact on 10 kHz sensor bandwidth.

DC-DC Converter Input Stage

Motor Drive Gate Driver Protection

Use Scenario: Safeguarding buck converter inputs against voltage spikes caused by back-EMF from solenoid or relay switching.

IC Role / Device Role / Timing Role: TVS connected across input capacitor to absorb inductive kickback energy.

Use Value: Absorbs up to 500 W of transient power without degradation, extending capacitor lifetime and preventing controller reset due to overvoltage.

Use Scenario: Protecting high-side and low-side MOSFET gate drivers from Miller-induced voltage spikes during fast switching.

IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp gate-source overvoltage.

Use Value: Prevents gate oxide breakdown by limiting V_GS to <28 V during dV/dt events, ensuring reliable 100 kHz PWM operation in BLDC inverters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMA5J17AHE3/61	AEC-Q101 qualified variant with identical electrical specs; differs only in whisker test class (JESD 201 Class 2 vs. Class 1A).	Required for automotive safety-critical modules where extended whisker reliability is mandated (e.g., ADAS power domains).	Select SMA5J17AHE3/61 when full AEC-Q101 compliance documentation and Class 2 whisker testing are contractually required.
SMC5J17A-E3/73	Same V_WM/V_C but in larger DO-214AB (SMC) package; higher thermal mass yields R_θJA = 35 °C/W vs. 80 °C/W.	Better suited for high-ambient-temperature environments (>105 °C) or repeated surge duty cycles where junction heating must be minimized.	Choose SMC5J17A-E3/73 when board space allows and thermal derating margins are insufficient with SMA package under sustained surge conditions.

Compared with SMA5J17AHE3/61, the SMA5J17-E3/61 offers identical clamping performance with Class 1A whisker testing - sufficient for most commercial and non-safety automotive applications. Against SMC5J17A-E3/73, it trades thermal robustness for compact size, making it optimal for space-constrained 12 V power nodes where single-event surge protection is primary.

Availability

SMA5J17-E3/61 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line clamping, and DC-DC converter input stage applications requiring stable component supply and traceable sourcing.

Supply support for SMA5J17-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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.

The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - balancing compact size, AEC-Q101 compliance, and 500 W surge capability in surface-mount form.

FAQ

What is the polarity configuration of the SMA5J17-E3/61?

The SMA5J17-E3/61 is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage. The cathode is marked by a band on the package body; correct orientation is essential to ensure clamping occurs on overvoltage events at the protected line. Forward conduction is not used in typical protection schemes.

Does the SMA5J17-E3/61 meet automotive qualification standards?

Yes, the SMA5J17-E3/61 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - validating reliability in under-hood and body-control module applications where the SMA5J17-E3/61 is commonly deployed.

What is the maximum clamping voltage of the SMA5J17-E3/61 during a surge event?

The SMA5J17-E3/61 has a maximum clamping voltage (V_C) of 27.6 V when subjected to its rated peak pulse current of 18.1 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient suppression.

Can the SMA5J17-E3/61 be used in bi-directional protection circuits?

No, the SMA5J17-E3/61 is strictly unidirectional. For bi-directional transient suppression, Vishay specifies part numbers ending in "CA" (e.g., SMA5J17CA). Using SMA5J17-E3/61 in a bi-directional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.

What is the thermal resistance specification for the SMA5J17-E3/61?

The SMA5J17-E3/61 has a typical junction-to-ambient thermal resistance (R_θJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its junction-to-lead resistance (R_θJL) is 25 °C/W. These values assume JEDEC-standard PCB layout and are critical for calculating junction temperature rise during repetitive surge events.

SMA5J17-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:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 17V

Voltage - Breakdown (Min):: 18.9V

Voltage - Clamping (Max) @ Ipp:: 30.5V

Current - Peak Pulse (10/1000µs):: 16.4A

Power - Peak Pulse:: 500W

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)

SMA5J17-E3/61 FAQ

1.How can I place an order for SMA5J17-E3/61 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMA5J17-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 SMA5J17-E3/61 reliable?

The price and inventory of SMA5J17-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 SMA5J17-E3/61 is usually 5 days.

3.What payment methods are accepted for SMA5J17-E3/61?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17-E3/61 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMA5J17-E3/61?

SMA5J17-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMA5J17-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 SMA5J17-E3/61?

For technical support, including SMA5J17-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17-E3/61 requirements.

6.How does Aetrix verify that SMA5J17-E3/61 is sourced from the original manufacturer or authorized distributors?

All SMA5J17-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 SMA5J17-E3/61 meets industry standards.

7.What is the process for return or replacement of SMA5J17-E3/61?

All SMA5J17-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17-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 SMA5J17-E3/61 part is unused and in its original packaging.

Return procedure for SMA5J17-E3/61:

1.Submit a request within 90 days.

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

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