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Vishay General Semiconductor - Diodes Division SA14AHE3/54
- Part No.:
- SA14AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14AHE3/54.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,998
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Product details
Overview
SA14AHE3/54 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 mA, 21.6 A peak pulse current (IPPM), 23.2 V clamping voltage (VC) at IPPM, and 500 W peak pulse power (10/1000 μs waveform), suitable for protecting MOSFETs and ICs in automotive power supplies.
For engineers reviewing the SA14AHE3/54 datasheet, SA14AHE3/54 pinout, SA14AHE3/54 application, or SA14AHE3/54 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, DO-15 mechanical compatibility, 175 °C max junction temperature, and 1.0 μA reverse leakage at VWM - all critical for robust transient suppression in automotive and industrial control systems.
Technical Context
The SA14AHE3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to voltage transients induced by inductive switching or ESD events. Its unidirectional configuration enables integration into DC power rails where polarity-sensitive clamping is required, and its 3.0 W steady-state power dissipation supports continuous operation under low-duty-cycle surge conditions.
Designed for AEC-Q101 qualification, the device meets automotive reliability requirements including solderability per J-STD-002, whisker resistance (JESD 201 Class 2), and thermal cycling from –55 °C to +175 °C. The DO-15 package provides standardized lead spacing and mounting compatibility with legacy through-hole PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - ensures reliable avalanche conduction onset within tight tolerance band |
| VC @ IPPM | 23.2 V at 21.6 A - limits downstream voltage stress during worst-case 10/1000 μs surge |
| PPPM | 500 W - sustains high-energy transients without failure under standard test waveform |
| ID @ VWM | 1.0 μA - ultra-low leakage preserves efficiency in battery-backed or low-power circuits |
| TJ max | +175 °C - enables deployment in under-hood automotive environments and industrial enclosures |
| IFSM | 70 A - withstands repetitive 10 ms half-sine surges common in motor drive and relay coil snubbing |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Clamping output / High-side connection | Connected to protected line (e.g., 12 V rail); color band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Glass passivated junction | Ensures stable VBR over time and improved moisture resistance vs. non-passivated alternatives |
| 500 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surge events without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a) |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability long-life deployments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local regulator. Use Value: Limits transient voltage to ≤23.2 V during 500 W surges, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD coupling via cables in factory automation. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and ground, with cathode tied to signal line. Use Value: Sub-1 ns response clamps ±8 kV contact ESD (IEC 61000-4-2) while adding <0.5 pF parasitic capacitance. |
| MOSFET Gate Driver Protection | DC-DC Converter Input Stage |
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers against Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Clamping diode from gate to source, suppressing dv/dt-induced overshoot. Use Value: 21.6 A IPPM rating handles gate loop surge energy; 1.0 μA leakage avoids gate discharge in high-impedance drive circuits. | Use Scenario: Front-end protection of buck converter inputs exposed to 24 V industrial bus transients. IC Role / Device Role / Timing Role: Primary surge suppressor placed upstream of input capacitor and controller IC. Use Value: 14 V VWM allows operation across full 24 V nominal range with margin; 175 °C TJ max supports enclosed thermal environments. |
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-E3/52 | Same VWM (14 V), but SMA package (SMT), lower IPPM (21.2 A), same VC (23.2 V) | Requires PCB rework for surface-mount layout; better suited for space-constrained designs | Select when board real estate is limited and automated assembly is preferred over through-hole |
| P6SMB14A | Same VWM and DO-214AA package; slightly higher VC (23.8 V), identical AEC-Q101 qualification | Higher thermal resistance than DO-15; requires larger copper pour for 3.0 W dissipation | Choose if existing design uses SMB footprint and thermal management accommodates higher RθJA |
Compared with SMAJ14A-E3/52 and P6SMB14A, the SA14AHE3/54 offers proven through-hole mechanical robustness, superior lead-to-lead creepage for high-voltage isolation, and optimized thermal path in DO-15 for legacy automotive harness interfaces - making it preferred for serviceable, high-reliability power entry points.
Availability
SA14AHE3/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and DC-DC converter input stage designs requiring stable component supply and long-term lifecycle support.
Supply support for SA14AHE3/54 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 and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial controls, and telecom infrastructure.
FAQ
What is the clamping voltage of the SA14AHE3/54 under peak pulse conditions?
The SA14AHE3/54 has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 21.6 A, measured using the 10/1000 μs waveform. This value ensures downstream components see no more than 23.2 V during standardized surge events, directly supporting design margin calculations for 12 V and 24 V systems.
Is the SA14AHE3/54 qualified for automotive use?
Yes, the SA14AHE3/54 carries AEC-Q101 qualification, verified per the full stress test suite including temperature cycling, humidity bias, and high-temperature operating life. Its HE3 suffix explicitly denotes AEC-Q101 compliance, making SA14AHE3/54 suitable for under-hood and chassis-mounted applications where reliability is mandated.
What does the "HE3/54" suffix mean in SA14AHE3/54?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies the packaging format - 13-inch paper tape and reel, 4000 units per reel. This matches Vishay's standard ordering code for automotive-grade DO-15 TVS diodes.
Can SA14AHE3/54 be used in bidirectional configurations?
No, SA14AHE3/54 is strictly unidirectional, as confirmed by its "A" suffix (vs. "CA" for bidirectional variants like SA14CA). Its cathode-band marking and forward voltage curve confirm polarity-sensitive operation; using it in reverse-biased AC paths would result in unintended conduction and failure.
What is the maximum junction temperature rating for SA14AHE3/54?
The SA14AHE3/54 has a maximum junction temperature (TJ max) of +175 °C, enabling operation in high-ambient environments such as engine compartments or sealed industrial enclosures. This rating is validated across the full operating range and supports derating curves shown in Figure 2 of the official Vishay datasheet 88378.
SA14AHE3/54 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:
- -
- 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)
SA14AHE3/54 FAQ
1.How can I place an order for SA14AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14AHE3/54 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 SA14AHE3/54 reliable?
The price and inventory of SA14AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA14AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA14AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14AHE3/54?
SA14AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14AHE3/54 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 SA14AHE3/54?
For technical support, including SA14AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14AHE3/54 requirements.
6.How does Aetrix verify that SA14AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA14AHE3/54 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 SA14AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA14AHE3/54?
All SA14AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14AHE3/54, 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 SA14AHE3/54 part is unused and in its original packaging.
Return procedure for SA14AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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