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Vishay General Semiconductor - Diodes Division SMA5J14CA-M3/5A
- Part No.:
- SMA5J14CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14CA-M3/5A.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,635
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Product details
Overview
SMA5J14CA-M3/5A 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 interfaces and industrial I/O protection.
For engineers reviewing the SMA5J14CA-M3/5A datasheet, SMA5J14CA-M3/5A pinout, SMA5J14CA-M3/5A application, or SMA5J14CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating, DO-214AC thermal performance, AEC-Q101 qualification eligibility (via HM3 suffix), and compatibility with automated SMT placement.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes. Its bidirectional architecture ensures symmetrical clamping in both polarities without external polarity management.
The device is rated for 500 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable operation on minimal 5.0 mm × 5.0 mm copper pads per terminal.
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 at 1 mA - Verified breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 23.2 V at 21.6 A - Clamped voltage during full-rated 500 W surge; determines maximum stress on downstream components. |
| PPPM | 500 W - Peak pulse power handling per 10/1000 µs waveform; defines robustness against common surge standards (IEC 61000-4-5). |
| IPPM | 21.6 A - Peak surge current corresponding to 500 W clamping; used for PCB trace sizing and layout margining. |
| TJ max. | +150 °C - Maximum junction temperature enabling use in under-hood automotive and high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 2.54 mm lead pitch; compatible with J-STD-020 MSL Level 1 reflow profiles. |
Pinout & Package
SMA5J14CA-M3/5A uses the SMA (DO-214AC) package: molded plastic case with two coplanar matte tin-plated leads, no polarity marking (bidirectional), UL 94 V-0 rated, and compliant with JESD201 Class 2 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No fixed polarity; conducts equally in both directions above VBR, eliminating need for orientation-aware placement. |
| Case (body) | Non-electrical mechanical interface | Insulated plastic housing provides creepage/clearance compliance and thermal coupling to PCB copper pads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints or external diode pairing. |
| 500 W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) with margin when mounted per recommended pad layout. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) across temperature and lifetime, critical for low-power sensor interfaces. |
| MSL Level 1 rating | Supports standard SMT reflow without baking or special handling; peak reflow temperature up to 260 °C permitted. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive and industrial end equipment without sacrificing surge performance. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Maintains signal integrity by limiting transient voltage to ≤23.2 V while surviving repeated 500 W surges per ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on isolated input channels, coordinated with upstream fusing and filtering. Use Value: Enables >100,000 surge cycles at rated stress without parameter drift, reducing field failure rates in factory automation systems. |
| Telecom Line Interface | Consumer Power Adapter ESD Guard |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers in network edge devices from lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Common-mode TVS pair (with matching unidirectional devices) referenced to chassis ground to divert differential and common-mode transients. Use Value: Provides <1 ns response time and <23.2 V clamping to prevent latch-up or damage in 3.3 V/5 V transceiver ICs. |
Use Scenario: Adding secondary-level ESD protection on USB-C or barrel-jack input lines of wall adapters and charging bricks. IC Role / Device Role / Timing Role: Secondary surge limiter downstream of primary MOV or fuse, absorbing residual fast transients missed by bulk protection. Use Value: Delivers 8 kV contact / 15 kV air ESD immunity per IEC 61000-4-2 while maintaining low capacitance (<100 pF) to avoid signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14CA-E3/5A | Same electrical specs and package; RoHS-compliant but not halogen-free; uses matte tin plating per J-STD-002. | Preferred for commercial-grade applications where halogen-free requirement is not mandated. | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and assembly process. |
| SMA5J14CAHM3_A/I | Identical electrical and mechanical specs; adds AEC-Q101 qualification and halogen-free compliance; packaged in 13" tape/reel (7500 pcs). | Required for automotive OEM designs needing qualified components and extended supply chain traceability. | Choose for Tier 1 automotive programs requiring PPAP documentation and AEC-Q101 test reports. |
Compared with SMA5J14CA-M3/5A, the E3 variant offers identical protection performance at lower cost for non-automotive use, while the HM3_A/I version adds formal automotive qualification and larger reel packaging - enabling direct substitution only when qualification or volume packaging aligns with program requirements.
Availability
SMA5J14CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, halogen-free compliance, and SMT-ready packaging.
Supply support for SMA5J14CA-M3/5A 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, power density, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems where robustness against repetitive surge stress is mandatory.
FAQ
What is the clamping voltage of the SMA5J14CA-M3/5A under full-rated surge conditions?
The SMA5J14CA-M3/5A clamps to a maximum of 23.2 V when subjected to its rated 21.6 A peak pulse current (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a 500 W transient event. The SMA5J14CA-M3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA5J14CA-M3/5A suitable for automotive applications?
The SMA5J14CA-M3/5A itself is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the functionally identical SMA5J14CAHM3_A/I variant with full AEC-Q101 qualification. For automotive use, designers should specify the HM3-suffixed part; the SMA5J14CA-M3/5A remains appropriate for non-automotive industrial or consumer applications requiring halogen-free compliance.
What does the "CA" suffix indicate in SMA5J14CA-M3/5A?
The "CA" suffix in SMA5J14CA-M3/5A denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SMA5J14A), the SMA5J14CA-M3/5A has no cathode marking and can be placed without regard to polarity, simplifying layout and assembly for AC or floating signal lines.
What is the thermal resistance of the SMA5J14CA-M3/5A, and how does it affect PCB layout?
The SMA5J14CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead resistance (RθJL) of 25 °C/W. To achieve rated 500 W surge performance, Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad area increases thermal impedance and de-rates surge capability - the SMA5J14CA-M3/5A must be laid out per the recommended footprint to maintain datasheet specifications.
How does the SMA5J14CA-M3/5A compare to smaller-package TVS diodes like SMAJ14CA?
The SMA5J14CA-M3/5A delivers 500 W peak pulse power, double the 400 W rating of the SMAJ14CA in the same SMA package. This higher rating stems from optimized chip geometry and thermal design, allowing the SMA5J14CA-M3/5A to handle more severe transients without degradation. Both share identical pinout and footprint, but the SMA5J14CA-M3/5A is preferred where IEC 61000-4-5 Level 4 or ISO 7637-2 Pulse 5a compliance is required.
SMA5J14CA-M3/5A 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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J14CA-M3/5A FAQ
1.How can I place an order for SMA5J14CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14CA-M3/5A 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 SMA5J14CA-M3/5A reliable?
The price and inventory of SMA5J14CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J14CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14CA-M3/5A?
SMA5J14CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14CA-M3/5A 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 SMA5J14CA-M3/5A?
For technical support, including SMA5J14CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14CA-M3/5A requirements.
6.How does Aetrix verify that SMA5J14CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J14CA-M3/5A 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 SMA5J14CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J14CA-M3/5A?
All SMA5J14CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14CA-M3/5A, 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 SMA5J14CA-M3/5A part is unused and in its original packaging.
Return procedure for SMA5J14CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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