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Vishay General Semiconductor - Diodes Division SMA5J14AHE3_A/H
- Part No.:
- SMA5J14AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14AHE3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,536
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Product details
Overview
SMA5J14AHE3_A/H 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 voltage (VBR), 23.2 V clamping voltage (VC) at 21.6 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J14AHE3_A/H datasheet, SMA5J14AHE3_A/H pinout, SMA5J14AHE3_A/H application, or SMA5J14AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, low incremental surge resistance, 150 °C maximum junction temperature, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for stable avalanche behavior under repetitive transients. Its thermal resistance (RθJA = 80 °C/W) and RθJL = 25 °C/W support reliable power dissipation in compact layouts.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), uses matte tin-plated leads compliant with JESD 22-B102, and is rated for -55 °C to +150 °C operating and storage temperature range - enabling use in under-hood automotive modules and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 21.6 A - Clamped voltage during 500 W 10/1000 µs surge; limits stress on downstream components like microcontrollers or gate drivers. |
| PPPM | 500 W - Peak pulse power handling capacity per single transient; validated with derating above 25 °C ambient per Fig. 2. |
| IFSM | 40 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports protection against inductive switch-off spikes. |
| Junction Temp | −55 °C to +150 °C - Full operational range enabling deployment in engine control units and outdoor power electronics. |
Pinout & Package
Package: SMA (DO-214AC) - surface-mount, low-profile plastic case with UL 94 V-0 flammability rating, 0.208" × 0.157" footprint, cathode band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional configuration; carries surge current during clamping. |
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line (e.g., 12 V supply or CAN bus); initiates avalanche breakdown when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine management and ADAS modules. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage stability (<1 µA at VWM) across life cycle and humidity exposure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin for 3.3 V/5 V logic. |
| MSL Level 1 compliance | Enables single-reflow assembly without moisture sensitivity concerns - eliminates bake requirements prior to SMT placement. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 16750-2) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input of LDO or MCU power domain. Use Value: Clamps 35 V/100 ms load dump to ≤23.2 V, preventing overvoltage damage to 28 V-rated regulators and enabling robust startup behavior. |
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: TVS mounted at sensor connector interface to shunt induced surges from nearby motor switching. Use Value: Limits transient energy to <500 W with sub-1 ns response, preserving 16-bit ADC accuracy and avoiding false fault triggers. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input |
Use Scenario: Shielding N-channel MOSFET gates from inductive kickback during PWM-controlled BLDC motor commutation. IC Role / Device Role / Timing Role: TVS placed between gate driver output and MOSFET gate, referenced to source. Use Value: Clamps gate-source voltage to ≤23.2 V, preventing oxide breakdown while maintaining <10 ns response for 20 kHz PWM operation. |
Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional TVS on secondary-side DC bus, upstream of DC/DC converters. Use Value: Absorbs 500 W lightning-induced surges (IEC 61000-4-5) without degradation, supporting >100,000 surge cycles per MIL-STD-883H. |
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/H | 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 public infrastructure projects). | Direct material substitution when halogen-free bill-of-materials is required; same footprint, thermal, and electrical performance. |
| SMCJ14AHE3_A/H | Same VWM/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM and higher IPPM (64.5 A). | Used where higher surge energy (e.g., 1 kV/500 A IEC 61000-4-5) or board-level heat spreading is needed. | Select when system-level surge testing exceeds 500 W; requires PCB layout change due to larger 0.276" × 0.212" footprint. |
Compared with SMA5J14AHE3_A/H, SMA5J14AHM3_A/H offers identical protection performance with halogen-free construction, while SMCJ14AHE3_A/H provides triple the surge power rating at the cost of increased board area - making SMA5J14AHE3_A/H optimal for space-constrained AEC-Q101-compliant designs requiring 500 W capability.
Availability
SMA5J14AHE3_A/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and telecom power supplies requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMA5J14AHE3_A/H 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, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial environments, delivering 500 W surge capability in the industry-standard SMA package with AEC-Q101 validation.
FAQ
What is the clamping voltage of the SMA5J14AHE3_A/H under a 500 W surge?
The SMA5J14AHE3_A/H has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated 500 W peak pulse power with a 10/1000 µs waveform. This value is measured at 21.6 A peak pulse current (IPPM) and ensures downstream components see limited overvoltage stress during standardized surge events such as ISO 7637-2 Pulse 5a.
Is SMA5J14AHE3_A/H suitable for automotive applications?
Yes, SMA5J14AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It is deployed in engine control modules, body electronics, and ADAS power domains where load dump and jump-start immunity are required.
What does the "_A/H" suffix mean in SMA5J14AHE3_A/H?
The "_A/H" suffix in SMA5J14AHE3_A/H denotes the packaging configuration: "A" indicates tape-and-reel packaging per EIA-481 standard, and "H" specifies a 7-inch diameter reel containing 1800 units. This format supports high-speed pick-and-place assembly in automotive electronics manufacturing.
How does SMA5J14AHE3_A/H differ from bidirectional variants like SMA5J14CA?
SMA5J14AHE3_A/H is unidirectional with cathode-band polarity and conducts only in reverse breakdown; SMA5J14CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The unidirectional version offers lower leakage (<1 µA at VWM) and is preferred for DC power rail protection, whereas bidirectional types suit AC or differential signal lines.
What is the thermal resistance of SMA5J14AHE3_A/H, and how does it affect layout?
SMA5J14AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C during repeated surges, PCB layout must provide minimum recommended pad area and avoid excessive trace length or isolation that increases thermal impedance.
SMA5J14AHE3_A/H 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/H FAQ
1.How can I place an order for SMA5J14AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14AHE3_A/H 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/H reliable?
The price and inventory of SMA5J14AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMA5J14AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14AHE3_A/H?
SMA5J14AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14AHE3_A/H 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/H?
For technical support, including SMA5J14AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14AHE3_A/H requirements.
6.How does Aetrix verify that SMA5J14AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J14AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMA5J14AHE3_A/H?
All SMA5J14AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMA5J14AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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