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Vishay General Semiconductor - Diodes Division SA14-E3/54
- Part No.:
- SA14-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14-E3/54.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,083
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Product details
Overview
SA14-E3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for circuit-level overvoltage protection. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 21.6 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤23.2 V at rated surge. It is used to protect MOSFET gates, sensor signal lines, and power rails in industrial motor drives.
For engineers reviewing the SA14-E3/54 datasheet, SA14-E3/54 pinout, SA14-E3/54 application, or SA14-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC-compliant packaging details, AEC-Q101 qualification status, and real-world protection use cases - all confirmed against Vishay Document #88378 (Rev. 18-Sep-12).
Technical Context
The SA14-E3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events and low incremental clamping resistance. Its uni-directional polarity requires cathode-band orientation during PCB layout, and it complies with JESD22-B102 solderability and JESD201 Class 1A whisker testing.
Rated for 500 W peak pulse power (10/1000 μs), 3.0 W steady-state dissipation on infinite heatsink, and 70 A non-repetitive forward surge (8.3 ms half-sine), it supports robust protection in automotive-grade and industrial environments up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| IPPM | 21.6 A (10/1000 μs) - Peak surge current capability; determines protection level against common lightning/inductive-switching transients. |
| VC | ≤23.2 V at IPPM - Clamped voltage seen by protected IC; must be below downstream device absolute maximum ratings. |
| PPPM | 500 W - Peak pulse power rating; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity designs. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial enclosures. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package; compatible with legacy wave-solder and manual rework processes. |
Pinout & Package
SA14-E3/54 uses a two-terminal DO-204AC (DO-15) axial package with matte tin-plated leads. Polarity is marked by a cathode band on the body; the banded end connects to circuit ground or return path when used in uni-directional clamp configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to protected line (e.g., +12 V rail); conducts during reverse-biased transient events. |
| Cathode (banded end) | Reference/ground node | Typically tied to system ground or low-impedance return; establishes clamping reference for overvoltage suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable avalanche characteristics and long-term reliability under repetitive surge stress without parameter drift. |
| 500 W peak pulse power (10/1000 μs) | Supports compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics. |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive applications including engine control units and body electronics where reliability is mission-critical. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs/ICs. |
| RoHS-compliant, JESD201 Class 1A whisker tested | Ensures lead finish integrity during thermal cycling and long-term storage; eliminates whisker-induced short-circuit failures. |
Applications
| Industrial Motor Drive Protection | Automotive Sensor Signal Line Guarding |
|---|---|
Use Scenario: Suppresses inductive kickback from relay coils and solenoid drivers in PLC output modules. IC Role / Device Role / Timing Role: Uni-directional TVS placed between switched 24 V load and controller GPIO, clamping transients before they reach microcontroller input protection diodes. Use Value: Limits voltage excursion to ≤23.2 V, preventing damage to 3.3 V or 5 V logic inputs while surviving >100,000 switching cycles per specification. |
Use Scenario: Protects analog outputs of pressure/temperature sensors connected to ECU via long harnesses susceptible to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Placed at sensor module PCB entry point, shunting transients to chassis ground before reaching op-amp input stage. Use Value: Responds in <1 ns to 100 V/μs edges, clamping to 23.2 V within 100 ps - preserving signal integrity and avoiding ADC saturation. |
| DC Power Rail Surge Suppression | Consumer Appliance Input Stage Protection |
Use Scenario: Installed across 12 V input rails of embedded controllers in HVAC systems exposed to load-dump events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from alternator load dump surges (ISO 16750-2, Test 4a). Use Value: Handles 500 W peak pulse without degradation; maintains VWM = 14 V margin above nominal 12 V supply, ensuring no leakage-induced heating. |
Use Scenario: Shields microcontroller reset lines and communication buses (e.g., I²C) in smart home appliances from ESD and EFT events. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) uni-directional suppressor placed directly at MCU pin, minimizing signal distortion. Use Value: Delivers 21.6 A surge handling with 23.2 V clamping - sufficient to pass IEC 61000-4-2 Level 4 (8 kV contact) without system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/5T | Same VWM (14 V), but SMC (DO-214AB) surface-mount package; 22.5 A IPPM, 23.2 V VC. | Requires PCB redesign for SMT assembly; better suited for space-constrained consumer electronics vs. through-hole industrial boards. | Select SMAJ14A-E3/5T only if board layout supports SMC footprint and automated placement is required. |
| P6KE15A | Higher VBR range (16.7–18.5 V), same DO-15 package; 20.5 A IPPM, 24.4 V VC; not AEC-Q101 qualified. | Lacks automotive qualification and tighter VBR tolerance; acceptable for commercial-grade power supplies but not safety-critical ECUs. | Choose P6KE15A only for cost-sensitive, non-automotive applications where ±1 V VBR variation is acceptable. |
Compared with SMAJ14A-E3/5T and P6KE15A, SA14-E3/54 offers AEC-Q101 qualification and tighter VBR (15.6–17.2 V) in a proven through-hole package - making it optimal for industrial control and automotive subsystems requiring traceable reliability and legacy assembly compatibility.
Availability
SA14-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor modules, and DC power rail protection requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for SA14-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, ruggedness, and automotive-grade validation.
The SAxx series was engineered specifically for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and telecom infrastructure where failure modes must be eliminated.
FAQ
What is the clamping voltage of SA14-E3/54 at its rated peak pulse current?
The SA14-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 Figure 7 in Vishay Document #88378 and represents the upper limit of voltage imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SA14-E3/54 achieves this with low incremental surge resistance and stable avalanche behavior.
Is SA14-E3/54 qualified for automotive applications?
Yes, SA14-E3/54 is AEC-Q101 qualified per Vishay documentation (Document #88378, Note 1 on page 3). The "E3" suffix denotes RoHS-compliant commercial grade with JESD201 Class 1A whisker testing, and the base SA14A family is explicitly validated for automotive use. This makes SA14-E3/54 suitable for engine control, body electronics, and ADAS sensor interfaces where reliability under thermal and mechanical stress is mandatory.
What is the standoff voltage and why does it matter for SA14-E3/54?
The standoff voltage (VWM) of SA14-E3/54 is 14 V - the maximum continuous reverse voltage it can block without entering avalanche conduction. This parameter defines the safe operating margin between normal circuit voltage and clamping onset; exceeding VWM risks premature leakage or thermal runaway. For a nominal 12 V system, SA14-E3/54 provides 2 V headroom, balancing protection responsiveness with DC stability.
How does the DO-204AC package affect PCB layout for SA14-E3/54?
The DO-204AC (DO-15) package of SA14-E3/54 requires axial through-hole mounting with 0.300" (7.6 mm) minimum lead length and 0.104" (2.6 mm) diameter body. Layout must observe ≥0.125" creepage/clearance from adjacent traces, orient the cathode band toward ground, and avoid thermal vias under the body to prevent solder wicking. Its robust mechanical form supports manual rework and wave soldering - unlike SMT alternatives that demand stencil and reflow precision.
Can SA14-E3/54 replace SA14A in existing designs?
Yes, SA14-E3/54 is a direct replacement for SA14A, sharing identical electrical specifications, DO-204AC packaging, and pinout. The "E3/54" suffix indicates RoHS-compliant taping (54 = 13" reel, 4000 pcs) and JESD201 Class 1A whisker-tested leads - enhancements that improve manufacturability and long-term reliability without altering circuit behavior. No schematic or layout changes are needed when upgrading from SA14A to SA14-E3/54.
SA14-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:
- 1
- Bidirectional Channels:
- -
- 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)
SA14-E3/54 FAQ
1.How can I place an order for SA14-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14-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 SA14-E3/54 reliable?
The price and inventory of SA14-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 SA14-E3/54 is usually 5 days.
3.What payment methods are accepted for SA14-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14-E3/54?
SA14-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14-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 SA14-E3/54?
For technical support, including SA14-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14-E3/54 requirements.
6.How does Aetrix verify that SA14-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA14-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 SA14-E3/54 meets industry standards.
7.What is the process for return or replacement of SA14-E3/54?
All SA14-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14-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 SA14-E3/54 part is unused and in its original packaging.
Return procedure for SA14-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA14-E3/54 Tags
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