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Vishay General Semiconductor - Diodes Division SMA5J14AHM3_A/I
- Part No.:
- SMA5J14AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14AHM3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,841
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Product details
Overview
SMA5J14AHM3_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), 500 W peak pulse power (10/1000 µs), 21.6 A peak pulse current (IPPM), and clamps to ≤23.2 V at rated surge - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J14AHM3_A/I datasheet, SMA5J14AHM3_A/I pinout, SMA5J14AHM3_A/I application, or SMA5J14AHM3_A/I equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 14 V and rapidly avalanches above VBR (min 15.6 V) to limit transient overvoltages. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables effective energy diversion during 10/1000 µs surges.
The SMA5J14AHM3_A/I is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) and exhibits RθJA = 80 °C/W and RθJL = 25 °C/W thermal resistance. It meets MSL level 1 (260 °C reflow peak) and is qualified to AEC-Q101 for automotive under-hood and powertrain applications.
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 1.0 mA - guaranteed avalanche initiation window for reliable turn-on |
| IPPM | 21.6 A at 10/1000 µs - peak surge current it safely shunts without failure |
| VC | ≤23.2 V at IPPM - clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 500 W - peak pulse power handling capacity under standardized surge waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in hot automotive environments |
| Leakage (ID) | ≤1.0 µA at VWM - negligible standby current minimizing system power loss |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band (cathode terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (non-clamping direction) | Connected to lower-potential side of protected line; conducts only during forward surge or bias |
| Cathode | Clamping node (reverse-biased during protection) | Connected to higher-potential side; avalanches when transient exceeds VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms halogen-free molding compound and lead finish meeting environmental standards |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass passivated junction | Ensures stable VBR, low leakage, and long-term parametric consistency across temperature and life |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Clamps to ≤23.2 V during 500 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic and MOSFET drivers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in factory automation PLCs. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD and inductive switching noise coupled onto 4–20 mA or 0–10 V signal lines. Use Value: Sub-µA leakage at 14 V ensures no DC error injection into precision signal chains; fast response preserves signal integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices and smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V/+9 V/+15 V output rails to absorb flyback spikes and cross-regulation overshoot. Use Value: 14 V VWM aligns with common adapter output tolerances; 23.2 V clamping prevents damage to USB-PD controllers and Type-C port ICs. | Use Scenario: DC input protection on PoE-powered network switches and base station remote radios operating from -48 V telecom supplies. IC Role / Device Role / Timing Role: Unidirectional TVS installed on -48 V return path to suppress positive-going transients induced by relay switching or lightning coupling. Use Value: AEC-Q101 qualification ensures robustness in harsh telecom environments; 150 °C rating supports sealed outdoor 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/I | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free); no AEC-Q101 qualification | Limited to non-automotive industrial or consumer use where halogen-free or automotive qualification not required | Select when cost sensitivity outweighs halogen-free or automotive requirements |
| SMA6J14A-M3/5A | 600 W PPPM, same VWM/VBR, larger SMA package variant with higher IPPM (24.3 A) and lower VC (22.0 V) | Better suited for higher-energy transients (e.g., heavy industrial motor drives) where margin beyond 500 W is needed | Select when design requires >500 W surge headroom or tighter clamping voltage |
Compared with SMA5J14AHE3_A/I, the SMA5J14AHM3_A/I adds halogen-free construction and AEC-Q101 qualification without sacrificing electrical performance; versus SMA6J14A-M3/5A, it trades 100 W peak power and slightly higher clamping for smaller footprint and lower cost in space-constrained automotive modules.
Availability
SMA5J14AHM3_A/I is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor nodes, and telecom DC distribution systems requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMA5J14AHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in automotive, industrial, and communications infrastructure - delivering robust clamping in compact surface-mount packages with validated AEC-Q101 and RoHS/halogen-free variants.
FAQ
What is the polarity configuration of the SMA5J14AHM3_A/I?
The SMA5J14AHM3_A/I is a unidirectional TVS diode. Its cathode is marked by a band on the SMA (DO-214AC) package body. When installed correctly - cathode toward the higher-potential side of the protected line - it clamps reverse transients while blocking normal forward-biased operation. This configuration is essential for protecting DC power rails and unidirectional signal paths.
Does the SMA5J14AHM3_A/I meet automotive qualification standards?
Yes, the SMA5J14AHM3_A/I is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and surge endurance - validating its suitability for automotive powertrain, body electronics, and ADAS modules where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of the SMA5J14AHM3_A/I under rated surge conditions?
The SMA5J14AHM3_A/I clamps to a maximum of 23.2 V when subjected to its rated 10/1000 µs peak pulse current of 21.6 A. This value is measured per JEDEC standards and represents the worst-case voltage imposed on the protected circuit during full-rated surge events - a key parameter for ensuring downstream components remain within safe operating limits.
How does the HM3 suffix differ from the HE3 suffix in Vishay's SMA5J series?
The HM3 suffix on SMA5J14AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. In contrast, the HE3 suffix (e.g., SMA5J14AHE3_A/I) indicates RoHS compliance and AEC-Q101 qualification but does not guarantee halogen-free materials. Both meet automotive reliability requirements, but HM3 satisfies stricter environmental mandates for halogen content.
Can the SMA5J14AHM3_A/I be used in bidirectional protection applications?
No, the SMA5J14AHM3_A/I is strictly unidirectional. For bidirectional transient suppression - such as AC line or data bus protection - Vishay specifies CA-suffix parts (e.g., SMA5J14CA). Using this unidirectional device in a bidirectional configuration risks failure during reverse-polarity transients, as it lacks symmetrical clamping capability in both directions.
SMA5J14AHM3_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:
- 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/I FAQ
1.How can I place an order for SMA5J14AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14AHM3_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 SMA5J14AHM3_A/I reliable?
The price and inventory of SMA5J14AHM3_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 SMA5J14AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J14AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14AHM3_A/I?
SMA5J14AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14AHM3_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 SMA5J14AHM3_A/I?
For technical support, including SMA5J14AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14AHM3_A/I requirements.
6.How does Aetrix verify that SMA5J14AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J14AHM3_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 SMA5J14AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J14AHM3_A/I?
All SMA5J14AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14AHM3_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 SMA5J14AHM3_A/I part is unused and in its original packaging.
Return procedure for SMA5J14AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J14AHM3_A/I Tags
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