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Vishay General Semiconductor - Diodes Division SMA5J14AHM3_A/H
- Part No.:
- SMA5J14AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14AHM3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,142
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Product details
Overview
SMA5J14AHM3_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 stand-off voltage (VWM), 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 protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J14AHM3_A/H datasheet, SMA5J14AHM3_A/H pinout, SMA5J14AHM3_A/H application, or SMA5J14AHM3_A/H equivalent, key selection criteria include verified clamping performance at rated IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 80 °C/W) under PCB pad-limited dissipation conditions.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 15.6–17.2 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response (<1 ns), enabling protection against ESD, lightning-induced surges, and inductive switching transients.
Designed for surface-mount automated assembly, it meets MSL level 1 (260 °C reflow peak) and supports operation from –55 °C to +150 °C junction temperature. The SMA package provides low-profile mounting with defined thermal path to copper pads (0.2" × 0.2") for reliable 500 W pulse handling per JEDEC test conditions.
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 - guaranteed avalanche initiation window defining turn-on threshold |
| VC @ IPPM | 23.2 V at 21.6 A - clamped voltage during 500 W 10/1000 μs surge, limiting stress on downstream components |
| PPPM | 500 W - peak pulse power capability under standardized surge waveform, derated above 25 °C |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine), relevant for fault-current limiting in DC power paths |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance on minimum recommended pad layout, critical for sustained surge duty cycle design |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band marking; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); conducts avalanche current when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | Meets environmental compliance requirements for automotive and industrial production without compromising surge robustness |
| AEC-Q101 qualified variant available | HM3 suffix indicates qualification for automotive-grade reliability (vibration, temperature cycling, HTRB) |
| Low incremental surge resistance | Enables tighter VC–IPPM margin versus competing 500 W TVS devices, reducing protected circuit voltage overshoot |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, supporting high-yield automated assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, absorbing up to 500 W surges within nanoseconds. Use Value: Limits rail voltage to ≤23.2 V during ISO 7637-2 Pulse 5a (load dump), preventing damage to LDOs and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC inputs against field-wiring induced surges. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor on signal line, shunting surge energy before reaching precision ADC front-end. Use Value: Maintains signal integrity with <1.0 μA leakage at 14 V, ensuring minimal offset error in 16-bit measurement systems. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Standoff-rated clamp on +5 V or +9 V output rail, activated only during fault events. Use Value: Prevents latch-up in USB controller ICs by clamping transients to 23.2 V while maintaining 14 V nominal regulation margin. | Use Scenario: DC feed protection in remote radio units (RRUs) powered via 48 V telecom distribution. IC Role / Device Role / Timing Role: Primary surge arrestor on 48 V input, coordinated with upstream MOVs and downstream TVS arrays. Use Value: Delivers 500 W pulse handling with RθJA = 80 °C/W on standard FR4, enabling compact heatsinkless designs in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14AHE3_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen-free requirement is not mandated (e.g., commercial industrial equipment) | Select when cost optimization is prioritized over halogen-free material specification |
| SMC5J14AHE3_A/H | Same VWM/VC ratings but in larger SMC (DO-214AB) package; higher IPPM (32.5 A) and lower RθJA (50 °C/W) | Better suited for high-duty-cycle or thermally constrained environments requiring enhanced power dissipation | Choose when board space allows and thermal margin is critical beyond 500 W single-pulse needs |
Compared with SMA5J14AHM3_A/H, SMA5J14AHE3_A/H offers identical protection performance without halogen-free assurance, while SMC5J14AHE3_A/H trades footprint size for superior thermal and surge current capability - making the SMA variant optimal for space-constrained, halogen-free automotive and industrial designs.
Availability
SMA5J14AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface clamping, and telecom DC power feeds requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMA5J14AHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power-density transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 qualification and halogen-free compliance are mandatory.
FAQ
What is the clamping voltage of the SMA5J14AHM3_A/H under peak surge conditions?
The SMA5J14AHM3_A/H has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated 21.6 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured per JEDEC standards with specified PCB pad layout and confirms the device's ability to limit transient overvoltage to a safe level for downstream 15 V-tolerant ICs. The SMA5J14AHM3_A/H maintains this clamping performance across its qualified operating temperature range.
Is the SMA5J14AHM3_A/H qualified for automotive applications?
Yes, the SMA5J14AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive electronics. The SMA5J14AHM3_A/H meets the reliability requirements for engine control units, ADAS sensors, and body electronics where transient immunity is critical.
Does the SMA5J14AHM3_A/H have halogen-free construction?
Yes, the SMA5J14AHM3_A/H uses halogen-free molding compound and terminations, complying with IEC 61249-2-21 and regional environmental regulations. This is explicitly indicated by the "HM3" suffix in the ordering code and verified in Vishay's material declarations. The SMA5J14AHM3_A/H maintains full electrical and thermal performance while meeting strict halogen-free requirements for automotive and green industrial designs.
What is the maximum reverse leakage current of the SMA5J14AHM3_A/H at its stand-off voltage?
The SMA5J14AHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 14 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive wake-up lines or sensor bias networks. The SMA5J14AHM3_A/H maintains leakage below 5 μA even at elevated temperatures up to 125 °C per datasheet characterization.
Can the SMA5J14AHM3_A/H be used in bidirectional configurations?
No, the SMA5J14AHM3_A/H is a unidirectional TVS diode, as indicated by its "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMA5J14CA) and lack polarity marking. Using the SMA5J14AHM3_A/H in reverse-biased AC or floating signal paths would result in unintended conduction. For bidirectional protection, select the SMA5J14CA or equivalent CA-suffix part instead of the SMA5J14AHM3_A/H.
SMA5J14AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J14AHM3_A/H FAQ
1.How can I place an order for SMA5J14AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14AHM3_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 SMA5J14AHM3_A/H reliable?
The price and inventory of SMA5J14AHM3_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 SMA5J14AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J14AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14AHM3_A/H?
SMA5J14AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14AHM3_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 SMA5J14AHM3_A/H?
For technical support, including SMA5J14AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14AHM3_A/H requirements.
6.How does Aetrix verify that SMA5J14AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J14AHM3_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 SMA5J14AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J14AHM3_A/H?
All SMA5J14AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14AHM3_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 SMA5J14AHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J14AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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