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Vishay General Semiconductor - Diodes Division SMA5J14AHE3_A/I
- Part No.:
- SMA5J14AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14AHE3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,618
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Product details
Overview
SMA5J14AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown range (VBR), 23.2 V clamping voltage at 21.6 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform). It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial control inputs against ESD and load dump.
For engineers reviewing the SMA5J14AHE3_A/I datasheet, SMA5J14AHE3_A/I pinout, SMA5J14AHE3_A/I application, or SMA5J14AHE3_A/I equivalent, key selection criteria include clamping performance under 21.6 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, activating when reverse voltage exceeds its 15.6–17.2 V breakdown threshold to divert transients away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 µA at 14 V) and fast response time (<1.0 ns).
Thermal design relies on low junction-to-lead resistance (RθJL = 25 °C/W) and junction-to-ambient resistance (RθJA = 80 °C/W), enabling reliable operation up to 150 °C junction temperature. The device is rated for non-repetitive 40 A forward surge (8.3 ms half-sine) and meets MSL Level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 15.6 V / 17.2 V - Measured at 1 mA test current; guarantees activation within defined window for predictable clamping onset. |
| VC @ IPPM | 23.2 V - Clamping voltage at 21.6 A peak pulse (10/1000 µs); limits maximum stress on protected circuitry during surge events. |
| PPPM | 500 W - Peak pulse power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| IPPM | 21.6 A - Peak pulse current capacity (10/1000 µs); determines minimum trace width and PCB pad sizing for thermal reliability. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating below 125 °C ambient. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; must be routed with minimal inductance to maintain clamping speed. |
| Cathode | Reverse-biased protection node | Connected to protected line (e.g., CAN_H, LIN, sensor supply); marked by black band; defines unidirectional polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor modules. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across temperature and lifetime, critical for battery-powered systems. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without preconditioning-compatible with standard SMT assembly lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces. |
Applications
| Automotive Sensor Protection | Industrial Power Input Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS clamping transient energy before it reaches ADC input or op-amp front-end. Use Value: Maintains signal integrity under ISO 16750-2 Load Dump (12 V system, 35 V/1 s) while surviving repeated 21.6 A surges per IEC 61000-4-5. |
Use Scenario: Safeguarding 24 V DC input rails of PLC I/O modules and motor drives against switching transients from contactors and solenoids. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input stage, placed upstream of DC-DC converters and LDOs. Use Value: Limits rail voltage to ≤23.2 V during 500 W surges, preventing latch-up or destruction of downstream regulators and microcontrollers. |
| Automotive LIN Bus Protection | Consumer Appliance Power Supply Protection |
Use Scenario: Shielding LIN transceivers and microcontroller GPIOs in door modules and seat controls from ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized TVS at connector entry point, with cathode tied to LIN bus and anode to chassis ground. Use Value: Achieves <1 ns response time and <1.0 µA leakage at 12 V, preserving bus timing margins and minimizing standby current drain. |
Use Scenario: Protecting primary-side rectifier outputs in white goods SMPS (e.g., washing machine, HVAC) against mains-borne surges. IC Role / Device Role / Timing Role: Secondary-level clamping after bridge rectifier but before bulk capacitor, absorbing residual spikes not filtered by X/Y caps. Use Value: Handles repetitive 10/1000 µs surges up to 500 W without degradation, extending capacitor and MOSFET lifetime in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14AHM3_A/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU WEEE, specific OEM specs). | Choose SMA5J14AHM3_A/I when halogen-free construction is required; otherwise SMA5J14AHE3_A/I offers standard RoHS compliance. |
| SMA6J14AHE3_A/I | 600 W peak pulse power (vs. 500 W), same VWM/VBR/VC, larger package footprint (SMB/DO-214AA). | Supports higher-energy threats (e.g., ISO 7637-2 Pulse 5b) but requires PCB layout change due to SMB package size. | Select SMA6J14AHE3_A/I only if 600 W rating is needed and board space allows SMB footprint; SMA5J14AHE3_A/I remains optimal for space-constrained 500 W applications. |
Compared with SMA5J14AHM3_A/I, the SMA5J14AHE3_A/I offers identical surge performance with standard RoHS compliance, while SMA6J14AHE3_A/I trades increased power handling for larger PCB area-making SMA5J14AHE3_A/I the preferred choice for AEC-Q101-compliant, space-efficient 500 W protection.
Availability
SMA5J14AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial 24 V power inputs, and consumer appliance SMPS requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMA5J14AHE3_A/I 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-power density packaging.
The SMA5J series was developed specifically for high-energy transient suppression in automotive and industrial environments, balancing compact SMA footprint with 500 W surge capability and AEC-Q101 validation.
FAQ
What is the polarity configuration of the SMA5J14AHE3_A/I?
The SMA5J14AHE3_A/I is a unidirectional TVS diode, with the cathode terminal identified by a black band on the SMA package body. This polarity enables it to clamp only reverse-voltage transients on lines referenced to ground, making it suitable for protecting positive-rail circuits such as 12 V automotive supplies and sensor VCC lines. The SMA5J14AHE3_A/I does not conduct in forward bias beyond typical diode drop.
Is the SMA5J14AHE3_A/I qualified for automotive applications?
Yes, the SMA5J14AHE3_A/I is fully AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024 (Document Number: 88875). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance-validating its use in engine control, body electronics, and ADAS subsystems where reliability under harsh conditions is mandatory.
What is the maximum clamping voltage of the SMA5J14AHE3_A/I under surge conditions?
The SMA5J14AHE3_A/I has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 21.6 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and represents the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does the SMA5J14AHE3_A/I meet moisture sensitivity level requirements for SMT assembly?
Yes, the SMA5J14AHE3_A/I meets MSL Level 1 per J-STD-020, with a maximum reflow peak temperature of 260 °C. This means it can be stored indefinitely at room temperature and placed directly into standard lead-free reflow profiles without baking or dry-pack requirements-reducing manufacturing complexity and cost in high-volume SMT lines.
How does the SMA5J14AHE3_A/I compare to bidirectional TVS diodes like SMA5J14CA?
The SMA5J14AHE3_A/I is unidirectional and protects only against negative-going transients on positively referenced lines, whereas SMA5J14CA is bidirectional and clamps surges of either polarity-suitable for AC-coupled or differential buses like RS-485. The SMA5J14AHE3_A/I offers lower leakage (<1.0 µA at 14 V) and tighter VBR tolerance than its bidirectional counterpart, optimizing performance in DC power rail protection.
SMA5J14AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J14AHE3_A/I FAQ
1.How can I place an order for SMA5J14AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14AHE3_A/I 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 SMA5J14AHE3_A/I reliable?
The price and inventory of SMA5J14AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J14AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14AHE3_A/I?
SMA5J14AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14AHE3_A/I 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 SMA5J14AHE3_A/I?
For technical support, including SMA5J14AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14AHE3_A/I requirements.
6.How does Aetrix verify that SMA5J14AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J14AHE3_A/I 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 SMA5J14AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J14AHE3_A/I?
All SMA5J14AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14AHE3_A/I, 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 SMA5J14AHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J14AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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