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Vishay General Semiconductor - Diodes Division SMA5J14C-E3/5A
- Part No.:
- SMA5J14C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14C-E3/5A.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,362
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Product details
Overview
SMA5J14C-E3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection on signal and power lines. It features a 14 V stand-off voltage (VWM), 23.2 V clamping voltage (VC) at 21.6 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J14C-E3/5A datasheet, SMA5J14C-E3/5A pinout, SMA5J14C-E3/5A application, or SMA5J14C-E3/5A equivalent, key selection criteria include bi-directional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 15.6 V (min) and 17.2 V (max) at 1 mA test current. Its clamping behavior is characterized under standardized 10/1000 µs surge waveforms, delivering 23.2 V maximum clamping voltage at 21.6 A IPPM, ensuring predictable voltage limiting during transients.
Thermally, it exhibits RθJA = 80 °C/W (typ.) and RθJL = 25 °C/W (typ.), enabling reliable operation up to +150 °C junction temperature. The device uses a glass-passivated silicon junction and meets UL 94 V-0 flammability requirements in its DO-214AC molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 15.6 V / 17.2 V - Breakdown threshold range at 1 mA, defining turn-on consistency |
| VC @ IPPM | 23.2 V - Clamped voltage seen by protected circuit during 500 W surge event |
| IPPM | 21.6 A - Peak surge current supported under 10/1000 µs waveform without failure |
| PPPM | 500 W - Transient energy absorption capacity per single non-repetitive pulse |
| TJ max | +150 °C - Maximum allowable junction temperature for sustained reliability |
| Package | DO-214AC (SMA) - Surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two coplanar leads; no polarity marking for bi-directional devices; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional terminal pair | No functional distinction - identical electrical behavior in either direction; connected across protected line and ground |
| Case | Non-electrical mechanical body | UL 94 V-0 compliant thermoset polymer housing; provides insulation and mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| Glass-passivated junction | Improves long-term stability and reduces leakage drift under thermal and humidity stress |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, enhancing protection margin |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and position sensor outputs from load dump and ESD events in engine control units. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential signal pair or supply rail to clamp ±25 V transients. Use Value: Prevents latch-up or damage to downstream ASICs by limiting voltage to ≤23.2 V during 500 W surges. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on input terminals to shunt induced lightning-induced transients away from precision op-amps. Use Value: Maintains signal integrity by clamping transients within 10 ns response time while adding <1 pF capacitance at 0 V bias. |
| Consumer USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines after primary ESD array, guarding against system-level EFT and contact discharge. IC Role / Device Role / Timing Role: Bi-directional standoff device rated for 14 V common-mode operation, placed adjacent to connector. Use Value: Delivers 21.6 A surge handling without degradation, meeting IEC 61000-4-5 Level 3 (1 kV/42 Ω) requirements. | Use Scenario: Front-end protection on xDSL or Ethernet line interface cards subjected to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Primary surge diverter mounted on PCB edge, coordinated with gas discharge tube (GDT) upstream. Use Value: Absorbs initial 500 W energy burst while maintaining low clamping to prevent secondary component overstress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14CA-E3/5A | Identical electrical specs and packaging; CA suffix explicitly denotes bi-directional version per Vishay naming convention | No functional difference - SMA5J14C-E3/5A and SMA5J14CA-E3/5A refer to same bi-directional device; "C" implies bi-directional in this family | Select SMA5J14CA-E3/5A when explicit CA suffix is required for BOM traceability or internal part numbering alignment |
| SMC5J14CA | Same VWM/VC/PPPM, but in larger DO-214AB (SMC) package with higher IPPM (32.4 A) and lower RθJA (50 °C/W) | Better thermal performance and surge margin; requires larger PCB area and different pad layout | Choose SMC5J14CA where higher surge endurance or improved thermal dissipation is needed and board space permits |
Compared with SMA5J14C-E3/5A, SMA5J14CA-E3/5A offers identical protection performance with enhanced BOM clarity, while SMC5J14CA delivers superior thermal and surge capability at the cost of footprint size - enabling trade-offs between miniaturization and ruggedness.
Availability
SMA5J14C-E3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial I/O systems, and telecom line cards requiring stable component supply, AEC-Q101 compliance, and high-volume tape-and-reel delivery.
Supply support for SMA5J14C-E3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained surface-mount designs, targeting automotive, industrial, and communications equipment where robustness and standardization are critical.
FAQ
What does the 'C' suffix in SMA5J14C-E3/5A indicate?
The 'C' suffix in SMA5J14C-E3/5A explicitly designates a bi-directional configuration, confirming symmetrical clamping behavior in both forward and reverse directions. This distinguishes it from uni-directional variants (e.g., SMA5J14A) and ensures compatibility with AC-coupled or floating signal paths. The SMA5J14C-E3/5A data sheet confirms identical electrical characteristics in both polarities, including VBR, VC, and IPPM.
Is SMA5J14C-E3/5A suitable for automotive applications?
Yes, SMA5J14C-E3/5A is AEC-Q101 qualified and rated for operation from −55 °C to +150 °C, making it suitable for under-hood and cabin automotive environments. It is commonly used in engine control units, ADAS sensor interfaces, and infotainment power rails. The SMA5J14C-E3/5A meets stringent automotive reliability requirements including temperature cycling, highly accelerated life testing, and ESD immunity per ISO 10605.
What is the clamping voltage of SMA5J14C-E3/5A under surge conditions?
The SMA5J14C-E3/5A has a maximum clamping voltage (VC) of 23.2 V at 21.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards. The SMA5J14C-E3/5A maintains this clamping performance across its full operating temperature range.
Does SMA5J14C-E3/5A require special PCB layout considerations?
Yes - optimal performance of SMA5J14C-E3/5A requires short, low-inductance traces to minimize voltage overshoot during fast transients. Vishay recommends using minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal and avoiding vias in the current path. The SMA5J14C-E3/5A's DO-214AC package supports automated placement but demands careful thermal relief design to maintain RθJA = 80 °C/W.
How does SMA5J14C-E3/5A compare to SMA5J14A in terms of functionality?
SMA5J14C-E3/5A is bi-directional, while SMA5J14A is uni-directional - meaning SMA5J14C-E3/5A clamps transients of either polarity, whereas SMA5J14A only protects against reverse-polarity surges and conducts forward current. The SMA5J14C-E3/5A has no cathode band marking; SMA5J14A uses a band to denote cathode. Both share identical VWM (14 V) and PPPM (500 W), but differ in application scope and layout integration.
SMA5J14C-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SMA5J14C-E3/5A FAQ
1.How can I place an order for SMA5J14C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14C-E3/5A 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 SMA5J14C-E3/5A reliable?
The price and inventory of SMA5J14C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J14C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14C-E3/5A?
SMA5J14C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14C-E3/5A 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 SMA5J14C-E3/5A?
For technical support, including SMA5J14C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14C-E3/5A requirements.
6.How does Aetrix verify that SMA5J14C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J14C-E3/5A 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 SMA5J14C-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J14C-E3/5A?
All SMA5J14C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14C-E3/5A, 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 SMA5J14C-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J14C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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