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

Vishay General Semiconductor - Diodes Division SA16AHE3/54

Name: SA16AHE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA16AHE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA16AHE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA16AHE3/54.pdf

Description:: TVS DIODE 16VWM 26VC DO204AC

Quantity:: RFQ Add To RFQ list

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Inventory:9,549

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Product details

Overview

SA16AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 16 V stand-off voltage (V_WM), 17.8–19.7 V breakdown voltage (V_BR), 26.0 V clamping voltage (V_C) at 19.2 A peak pulse current, 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.

For engineers reviewing the SA16AHE3/54 datasheet, SA16AHE3/54 pinout, SA16AHE3/54 application, or SA16AHE3/54 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, DO-15 mechanical compatibility, and compliance with JESD22-B106 soldering and AEC-Q101 reliability standards.

Technical Context

The SA16AHE3/54 operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds V_BR, diverting transient energy to ground while limiting downstream voltage to ≤26.0 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at 16 V) and fast response time (<1.0 ns), critical for protecting sensitive inputs on microcontrollers and sensor interfaces.

Designed for unidirectional operation only, it supports 70 A non-repetitive forward surge current (I_FSM) and maintains thermal stability up to 175 °C junction temperature. The device is rated for 3.0 W steady-state power dissipation on infinite heatsink at 75 °C lead temperature, with derating per Figure 5 in the datasheet.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	16 V - Maximum continuous reverse operating voltage before clamping begins
V_BR (min/max)	17.8 V / 19.7 V at 1.0 mA - Confirmed breakdown threshold range for reliable turn-on margin
V_C @ I_PPM	26.0 V at 19.2 A - Clamped voltage during 10/1000 μs surge, defining protected node voltage ceiling
P_PPM	500 W - Peak transient power handling capability under standard 10/1000 μs waveform
I_PPM	19.2 A - Maximum non-repetitive peak pulse current supported without degradation
T_J max.	175 °C - Maximum junction temperature enabling operation in under-hood automotive environments
AEC-Q101	Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD

Pinout & Package

Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads. Cathode identified by color band at one end.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction path / surge return path	Connected to protected line (e.g., signal or power rail) when used in unidirectional configuration
Cathode	Clamping reference / ground connection point	Marked with color band; tied to system ground or low-impedance return to shunt transient current

Key Features

Feature	Design Value
Glass passivated chip junction	Ensures stable V_BR tolerance and low leakage (<1.0 μA) across temperature and lifetime
500 W peak pulse power (10/1000 μs)	Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly designed PCB layouts
AEC-Q101 qualification	Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and reliability validation
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic interfaces
Solderable per J-STD-002/JESD 22-B102	Compatible with standard reflow and wave solder processes, including 275 °C dip for 10 s maximum

Applications

Automotive Body Control Module (BCM)	Industrial PLC Digital Input Protection
Use Scenario: Protecting LIN bus interface pins and switch sense inputs from load dump and inductive kickback in vehicle door modules. IC Role / Device Role: Unidirectional TVS placed between input pin and chassis ground to clamp transients before reaching MCU GPIO or comparator input. Use Value: Limits voltage to ≤26.0 V during 100 V/50 ms load dump events, preventing latch-up or oxide damage in 5 V tolerant receivers.	Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from relay contact bounce and field wiring surges. IC Role / Device Role: Primary overvoltage clamp on field-side input trace, upstream of optocoupler or Schmitt trigger input stage. Use Value: Absorbs 500 W surge energy without failure, maintaining <1.0 μA leakage at 24 V nominal to avoid false triggering.
Consumer Appliance Motor Drive Interface	Telecom Power Supply ESD Protection
Use Scenario: Safeguarding microcontroller I/O lines connected to brushed DC motor feedback sensors exposed to commutation noise. IC Role / Device Role: Localized TVS on encoder or hall-effect sensor signal lines near motor controller PCB edge. Use Value: Responds in <1 ns to sub-100 ns spikes, clamping to 26.0 V while preserving signal integrity for 10 kHz PWM feedback loops.	Use Scenario: Protecting 12 V bias rails feeding RF front-end ICs in small-cell base stations from lightning-induced surges on external power feeds. IC Role / Device Role: Secondary-level TVS on DC input after primary MOV, providing precise clamping where low V_C is critical for LDO survival. Use Value: Delivers 26.0 V clamping at 19.2 A-lower than generic 33 V TVS-reducing stress on downstream 15 V-rated regulators.

Automotive Body Control Module (BCM)

Industrial PLC Digital Input Protection

Use Scenario: Protecting LIN bus interface pins and switch sense inputs from load dump and inductive kickback in vehicle door modules.

IC Role / Device Role: Unidirectional TVS placed between input pin and chassis ground to clamp transients before reaching MCU GPIO or comparator input.

Use Value: Limits voltage to ≤26.0 V during 100 V/50 ms load dump events, preventing latch-up or oxide damage in 5 V tolerant receivers.

Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from relay contact bounce and field wiring surges.

IC Role / Device Role: Primary overvoltage clamp on field-side input trace, upstream of optocoupler or Schmitt trigger input stage.

Use Value: Absorbs 500 W surge energy without failure, maintaining <1.0 μA leakage at 24 V nominal to avoid false triggering.

Consumer Appliance Motor Drive Interface

Telecom Power Supply ESD Protection

Use Scenario: Safeguarding microcontroller I/O lines connected to brushed DC motor feedback sensors exposed to commutation noise.

IC Role / Device Role: Localized TVS on encoder or hall-effect sensor signal lines near motor controller PCB edge.

Use Value: Responds in <1 ns to sub-100 ns spikes, clamping to 26.0 V while preserving signal integrity for 10 kHz PWM feedback loops.

Use Scenario: Protecting 12 V bias rails feeding RF front-end ICs in small-cell base stations from lightning-induced surges on external power feeds.

IC Role / Device Role: Secondary-level TVS on DC input after primary MOV, providing precise clamping where low V_C is critical for LDO survival.

Use Value: Delivers 26.0 V clamping at 19.2 A-lower than generic 33 V TVS-reducing stress on downstream 15 V-rated regulators.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ16A-E3/52	Same V_WM/V_C specs but SMA package (surface-mount); lower I_PPM (17.5 A) and P_PPM (400 W)	Requires PCB redesign for SMD layout; better suited for high-density consumer boards vs. through-hole industrial designs	Select SMAJ16A-E3/52 only if space-constrained layout and automated assembly justify SMD transition
1.5KE16A	Higher P_PPM (1500 W) but larger DO-201 package; V_C = 25.5 V at 58.3 A; no AEC-Q101 qualification	Used in legacy industrial power supplies where footprint and qualification are secondary to surge margin	Choose 1.5KE16A only when >500 W headroom is required and automotive qualification is not mandated

Compared with SMAJ16A-E3/52 and 1.5KE16A, the SA16AHE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole robustness, and precise 26.0 V clamping-making it optimal for automotive and high-reliability industrial replacements where qualification and mechanical stability are mandatory.

Availability

SA16AHE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC input stages, and telecom power supply protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge immunity.

Supply support for SA16AHE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.

The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and communications infrastructure where repeatable clamping and qualification assurance are essential.

FAQ

What is the clamping voltage of SA16AHE3/54 and how is it measured?

The SA16AHE3/54 has a maximum clamping voltage (V_C) of 26.0 V at 19.2 A peak pulse current, tested using the standard 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the upper voltage limit imposed on the protected line during surge events and is confirmed in the "ELECTRICAL CHARACTERISTICS" table on page 2 of Vishay document 88378. The SA16AHE3/54 maintains this clamping performance across its qualified temperature range.

Is SA16AHE3/54 suitable for automotive applications?

Yes, SA16AHE3/54 is AEC-Q101 qualified (note "HE3" suffix), having passed stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22-A114. Its 175 °C maximum junction temperature, stable leakage (<1.0 μA at 16 V), and DO-15 mechanical robustness make it appropriate for under-hood and body-control module deployments. The SA16AHE3/54 meets automotive requirements where unidirectional transient suppression with verified reliability is mandatory.

How does the SA16AHE3/54 differ from bidirectional TVS diodes like SA16CA?

The SA16AHE3/54 is unidirectional and features a cathode band for polarity identification, while SA16CA is bidirectional with no marking and symmetrical clamping in both directions. SA16AHE3/54 has a forward voltage drop (~3.5 V at 100 A) and supports I_FSM = 70 A, whereas SA16CA lacks forward conduction capability. Use SA16AHE3/54 on DC-biased lines (e.g., 5 V logic inputs); choose SA16CA only for AC-coupled or floating signal paths where polarity is undefined.

What is the meaning of the "HE3/54" suffix in SA16AHE3/54?

The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance; "54" denotes the preferred package code for 13-inch paper tape and reel packaging (4000 units per reel). This distinguishes SA16AHE3/54 from commercial-grade variants like SA16AE3/54 (no AEC-Q101) and confirms full compliance with automotive supply chain traceability and reliability requirements. The SA16AHE3/54 ordering code guarantees this specific qualification and packaging configuration.

Can SA16AHE3/54 be used in parallel for higher surge current handling?

No-SA16AHE3/54 is not characterized or recommended for parallel operation due to mismatch in V_BR (17.8–19.7 V) causing current imbalance and potential thermal runaway. Vishay specifies single-device usage per protected line. For higher IPPM, select a higher-power TVS (e.g., 1.5KE16A) or implement staged protection with upstream MOV + SA16AHE3/54. Derating and layout symmetry cannot compensate for inherent parameter spread; the SA16AHE3/54 must be applied as a standalone, single-device solution per I/O line.

SA16AHE3/54 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:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 16V

Voltage - Breakdown (Min):: 17.8V

Voltage - Clamping (Max) @ Ipp:: 26V

Current - Peak Pulse (10/1000µs):: 19.2A

Power - Peak Pulse:: 500W

Power Line Protection:: No

Applications:: -

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

SA16AHE3/54 FAQ

1.How can I place an order for SA16AHE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA16AHE3/54 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 SA16AHE3/54 reliable?

The price and inventory of SA16AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16AHE3/54 is usually 5 days.

3.What payment methods are accepted for SA16AHE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16AHE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA16AHE3/54?

SA16AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA16AHE3/54 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 SA16AHE3/54?

For technical support, including SA16AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16AHE3/54 requirements.

6.How does Aetrix verify that SA16AHE3/54 is sourced from the original manufacturer or authorized distributors?

All SA16AHE3/54 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 SA16AHE3/54 meets industry standards.

7.What is the process for return or replacement of SA16AHE3/54?

All SA16AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA16AHE3/54, 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 SA16AHE3/54 part is unused and in its original packaging.

Return procedure for SA16AHE3/54:

1.Submit a request within 90 days.

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

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