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Vishay General Semiconductor - Diodes Division SA14A-E3/54
- Part No.:
- SA14A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14A-E3/54.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:10,963
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Product details
Overview
SA14A-E3/54 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 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR at 1.0 mA), 500 W peak pulse power (10/1000 µs), 21.6 A peak pulse current (IPPM), and clamps to 23.2 V at rated IPPM. It is widely used to protect MOSFET gates, sensor signal lines, and microcontroller I/O in industrial power supplies.
For engineers reviewing the SA14A-E3/54 datasheet, SA14A-E3/54 pinout, SA14A-E3/54 application, or SA14A-E3/54 equivalent, key selection criteria include its 14 V stand-off rating, DO-15 mechanical compatibility, AEC-Q101 qualification status, low 1.0 µA max reverse leakage at VWM, and 23.2 V clamping performance under 21.6 A transient stress - all critical for robust overvoltage protection in automotive and industrial control systems.
Technical Context
The SA14A-E3/54 operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to voltage transients. Its 500 W peak pulse power rating is defined per 10/1000 µs waveform at 0.01% duty cycle, and it maintains stable clamping behavior across -55 °C to +175 °C junction temperature range.
It exhibits 9.2 mV/°C temperature coefficient of breakdown voltage and 3.5 V maximum forward voltage at 100 A surge, confirming suitability for high-current transient suppression in DC power rails and motor drive circuits where forward conduction during asymmetrical surges must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V nominal systems. |
| VBR (min/max) | 15.6 V / 17.2 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage. |
| IPPM | 21.6 A - Peak surge current it can safely divert with 10/1000 µs waveform; determines minimum series impedance required for coordination. |
| VC | 23.2 V - Clamped voltage at 21.6 A; sets upper bound on protected circuit stress during worst-case transient. |
| PPPM | 500 W - Peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Leakage (ID) | 1.0 µA max at VWM - Low standby current ensures minimal power loss and no interference with high-impedance sensor bias networks. |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return node; carries full transient current during clamping. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 12 V rail or sensor input); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring zero-failure field performance. |
| 500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment up to Level 4 (4 kV open-circuit). |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection margin for downstream ICs. |
| Solder dip 275 °C max. (10 s) | Supports standard wave and reflow soldering processes without degradation of electrical performance or mechanical integrity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Clamps to 23.2 V at 21.6 A, limiting stress on 36 V-rated power management ICs and ensuring compliance with ISO 7637-2 Pulse 5a. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD events on factory floor wiring. IC Role / Device Role: TVS connected from sensor output line to ground, guarding against ±8 kV contact discharge (IEC 61000-4-2). Use Value: Sub-µA leakage preserves sensor offset accuracy; fast <1 ns response prevents latch-up in precision op-amps. |
| DC Motor Drive Gate Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding N-channel MOSFET gate drivers from inductive kickback during PWM switching. IC Role / Device Role: TVS placed between gate and source to suppress negative-going spikes exceeding VGS rating. Use Value: 3.5 V max forward voltage at 100 A enables effective clamping of negative transients without damaging driver ICs. | Use Scenario: Front-end protection of Ethernet PHY interfaces exposed to lightning-induced surges on PoE lines. IC Role / Device Role: Unidirectional TVS used in conjunction with common-mode chokes to suppress differential-mode surges. Use Value: 500 W rating and 23.2 V clamping allow coordination with GDTs and polymer PTCs in multi-stage telecom surge architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | Same VWM (14 V), but SMA package (surface-mount); lower IPPM (21.2 A) and slightly higher VC (23.2 V vs. 23.2 V - identical), same PPPM. | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics. | Select SMAJ14A only when board real estate is limited and automated assembly is preferred over through-hole. |
| P6SMB14A | Same DO-214AA (SMB) package; identical VWM/VBR/VC, but higher IPPM (22.5 A) and 600 W PPPM; RoHS-compliant, not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial power supplies where qualification is not mandated. | Choose P6SMB14A for higher surge margin in non-automotive designs where SMB footprint is acceptable and AEC-Q101 is unnecessary. |
Compared with SMAJ14A and P6SMB14A, the SA14A-E3/54 offers proven through-hole mechanical robustness, AEC-Q101 qualification for automotive use, and DO-15 compatibility with legacy industrial designs - making it optimal for high-reliability, serviceable, or vibration-prone installations where leaded mounting is preferred.
Availability
SA14A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and DC motor drive gate safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for SA14A-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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure applications where consistent clamping and surge endurance are critical.
FAQ
What is the maximum clamping voltage of the SA14A-E3/54 under rated surge conditions?
The SA14A-E3/54 has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 21.6 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream components see no more than 23.2 V during a full-rated transient event - a key parameter for validating protection margins in 12 V systems.
Is the SA14A-E3/54 suitable for automotive applications?
Yes, the SA14A-E3/54 is AEC-Q101 qualified, meaning it has passed rigorous stress tests for temperature cycling, humidity, mechanical shock, and surge endurance required for automotive electronic modules. Its DO-15 package, 175 °C max junction temperature, and stable clamping performance make it appropriate for engine control units, body controllers, and infotainment power rails where reliability under harsh conditions is mandatory.
What does the "E3/54" suffix indicate in SA14A-E3/54?
The "E3" denotes RoHS-compliant, commercial-grade termination meeting JESD 201 Class 1A whisker resistance, while "/54" specifies the preferred packaging code: 4000-piece 13-inch paper tape and reel. This format ensures compatibility with automated pick-and-place equipment and simplifies inventory handling for high-volume manufacturing of the SA14A-E3/54.
How does the SA14A-E3/54 compare to bidirectional TVS diodes like SA14CA?
The SA14A-E3/54 is unidirectional and intended for DC line protection where polarity is fixed (e.g., +12 V rail to ground), whereas SA14CA is bidirectional and used for AC or floating signal lines. The SA14A-E3/54 provides lower forward voltage (3.5 V max at 100 A) and avoids ambiguity in cathode orientation - critical when protecting MOSFET gates or microcontroller I/O pins referenced to a single supply rail.
Can the SA14A-E3/54 be used in parallel for higher surge current handling?
No - the SA14A-E3/54 is not recommended for parallel operation due to mismatch in VBR tolerance (15.6–17.2 V) and thermal coupling limitations in DO-15 packages. Uneven current sharing may cause premature failure of one device. For higher surge ratings, select a single higher-rated part (e.g., SA15A or SA16A) or implement staged protection with upstream current-limiting resistors and coordinated TVS selection.
SA14A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SA14A-E3/54 FAQ
1.How can I place an order for SA14A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14A-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 SA14A-E3/54 reliable?
The price and inventory of SA14A-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 SA14A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA14A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14A-E3/54?
SA14A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14A-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 SA14A-E3/54?
For technical support, including SA14A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14A-E3/54 requirements.
6.How does Aetrix verify that SA14A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA14A-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 SA14A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA14A-E3/54?
All SA14A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14A-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 SA14A-E3/54 part is unused and in its original packaging.
Return procedure for SA14A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA14A-E3/54 Tags
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