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Vishay General Semiconductor - Diodes Division SMA5J14CAHM3/H
- Part No.:
- SMA5J14CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14CAHM3/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,661
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Product details
Overview
SMA5J14CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 µs), clamping voltage of 23.2 V at 21.6 A, and operates from –55 °C to +150 °C - used in automotive sensor interface protection and industrial I/O line hardening.
For engineers reviewing the SMA5J14CAHM3/H datasheet, SMA5J14CAHM3/H pinout, SMA5J14CAHM3/H application, or SMA5J14CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical clamping behavior ensures identical protection in both polarities, making it suitable for AC-coupled or floating signal paths without polarity concerns.
Rated for 500 W peak pulse power under standard 10/1000 µs waveform, it delivers 23.2 V clamping at 21.6 A IPPM while maintaining <1 µA reverse leakage at 14 V. The device is qualified to AEC-Q101 and built in halogen-free, RoHS-compliant molding compound meeting UL 94 V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 15.6 V / 17.2 V - breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 23.2 V at 21.6 A - clamped voltage during 500 W surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W - peak pulse power handling per 10/1000 µs waveform; defines single-event surge energy absorption capacity. |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in under-hood automotive and industrial environments. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard 5.0 mm × 5.0 mm pads; informs board-level thermal design margin. |
| Polarity | Bidirectional - symmetric clamping in both directions; eliminates need for polarity-aware layout or orientation control. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. No polarity marking - bidirectional function confirmed by CA suffix and specification table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Transient conduction path | Both terminals serve as symmetrical surge current entry/exit points; no cathode band or polarity indicator required. |
| Case (body) | Thermal and mechanical interface | Plastic body provides electrical isolation and transfers heat to PCB copper pads; UL 94 V-0 rated for flame resistance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports under-hood and ADAS applications. |
| Halogen-free & RoHS | Meets JEDEC J-STD-201 Class 2 whisker resistance and global environmental compliance - suitable for green manufacturing programs. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH; no bake requirement prior to reflow - simplifies SMT production logistics. |
| Low Rsurge | Minimizes voltage overshoot during fast transients due to low incremental surge resistance - improves clamping precision. |
| Glass passivation | Enhances long-term stability and moisture resistance of the PN junction - critical for field reliability in humid environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of receiver ICs. Use Value: Limits transient excursions to ≤23.2 V during 500 W surges, preserving signal integrity and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding PLC analog input modules and digital I/O channels against EFT, surge, and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Primary front-end TVS element on terminal blocks and connector interfaces before signal conditioning circuitry. Use Value: Withstands repeated 10/1000 µs surges up to 21.6 A while maintaining <1 µA leakage at 14 V - ensures minimal DC loading during normal operation. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and data line terminations in PoE-powered equipment. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp on isolated 3.3 V/5 V bias rails feeding magnetics and transceivers. Use Value: Clamps within nanoseconds to protect sensitive PHY ICs from induced lightning surges and hot-swap transients without affecting signal bandwidth. |
Use Scenario: Input-stage surge protection on AC-DC adapter secondary outputs (e.g., 12 V, 19 V rails) exposed to user-connect/disconnect events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between output capacitor and connector to absorb plug-in spikes and reverse-polarity misconnect energy. Use Value: 14 V VWM aligns with common adapter output tolerances; 500 W rating handles typical human-body-model (HBM) and cable discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ14CA | Same VWM (14 V), slightly lower PPPM (400 W), higher VC (23.8 V at 17.7 A), non-AEC-Q101 rated | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs 100 W power margin |
| ON Semiconductor SMA5J14CAHE3/A | Identical electrical specs, same SMA package, RoHS-compliant but not halogen-free, AEC-Q101 qualified | Uses brominated flame retardant; may conflict with strict halogen-free supply chain requirements | Choose if halogen content is unrestricted and procurement favors ON Semi's distribution network |
Compared with SMA5J14CAHM3/H, SMAJ14CA offers lower surge rating and no automotive qualification, while SMA5J14CAHE3/A matches performance but lacks halogen-free certification - making SMA5J14CAHM3/H the sole option meeting AEC-Q101 + halogen-free + 500 W simultaneously.
Availability
SMA5J14CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J14CAHM3/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 high-reliability, high-power-density solutions.
The SMA5J series was engineered for robust transient suppression in space-constrained, high-surge environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and consistent clamping performance.
FAQ
What does the 'HM3' suffix indicate in SMA5J14CAHM3/H?
The 'HM3' suffix in SMA5J14CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The '/H' revision identifier confirms compliance with the latest Vishay specification revision (09-Jan-2024). This distinguishes it from non-halogen-free variants like HE3 and commercial-grade E3/M3 versions. SMA5J14CAHM3/H meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
Is SMA5J14CAHM3/H unidirectional or bidirectional?
SMA5J14CAHM3/H is a bidirectional TVS diode, as confirmed by the 'CA' suffix in its part number and explicit listing in the 'DEVICES FOR BIDIRECTION APPLICATIONS' section of the Vishay datasheet. Its electrical characteristics - including symmetrical VBR min/max, identical clamping in both polarities, and absence of cathode band marking - validate bidirectional functionality. SMA5J14CAHM3/H is not suitable as a replacement for unidirectional types like SMA5J14A.
What is the maximum clamping voltage for SMA5J14CAHM3/H and under what test condition?
The maximum clamping voltage for SMA5J14CAHM3/H is 23.2 V, measured at a peak pulse current (IPPM) of 21.6 A using the standardized 10/1000 µs double-exponential waveform. This value is specified in the Electrical Characteristics table under 'MAXIMUM CLAMPING VOLTAGE AT IPPM' and assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per JEDEC guidelines. SMA5J14CAHM3/H maintains this clamping performance across its full operating temperature range.
Does SMA5J14CAHM3/H require special handling or baking before SMT assembly?
No, SMA5J14CAHM3/H does not require baking or special moisture handling prior to SMT assembly. It is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30 °C/60% RH and withstands peak reflow temperatures up to 260 °C. The device's matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, supporting standard lead-free reflow profiles without preconditioning.
How does SMA5J14CAHM3/H differ from SMA5J14A in practical circuit design?
SMA5J14CAHM3/H is bidirectional with symmetrical clamping and no polarity marking, whereas SMA5J14A is unidirectional with a cathode band and forward voltage drop (VF = 3.5 V at 25 A). In circuit design, SMA5J14CAHM3/H can be placed without orientation concern on AC or floating nodes, while SMA5J14A must be aligned with system polarity and cannot protect reverse-voltage transients. SMA5J14CAHM3/H also carries AEC-Q101 and halogen-free certifications absent in standard SMA5J14A.
SMA5J14CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J14CAHM3/H FAQ
1.How can I place an order for SMA5J14CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14CAHM3/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 SMA5J14CAHM3/H reliable?
The price and inventory of SMA5J14CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J14CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14CAHM3/H?
SMA5J14CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14CAHM3/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 SMA5J14CAHM3/H?
For technical support, including SMA5J14CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14CAHM3/H requirements.
6.How does Aetrix verify that SMA5J14CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J14CAHM3/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 SMA5J14CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J14CAHM3/H?
All SMA5J14CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14CAHM3/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 SMA5J14CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J14CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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