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Vishay General Semiconductor - Diodes Division SMA5J14-E3/61
- Part No.:
- SMA5J14-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14-E3/61.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,589
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Product details
Overview
SMA5J14-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) 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), 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. It is widely deployed to protect MOSFETs and ICs in automotive power supplies against inductive switching transients.
For engineers reviewing the SMA5J14-E3/61 datasheet, SMA5J14-E3/61 pinout, SMA5J14-E3/61 application, or SMA5J14-E3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and thermal resistance of 80 °C/W (junction-to-ambient).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 14 V), but triggers into low-impedance conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and fast response (<1 ns) to ESD and lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and supports 40 A non-repetitive forward surge current (8.3 ms half-sine). Its DO-214AC package enables automated placement and meets UL 94 V-0 flammability requirements, with cathode band marking for polarity identification.
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 - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 23.2 V - Clamped voltage seen by protected circuit during 500 W surge event |
| IPPM | 21.6 A - Peak surge current supported with 10/1000 µs waveform at 25 °C |
| PPPM | 500 W - Maximum non-repetitive transient power dissipation capability |
| TJ max. | 150 °C - Absolute maximum junction temperature for reliable long-term operation |
| RθJA | 80 °C/W - Thermal resistance from junction to ambient; informs heatsinking needs on PCB |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded plastic body with two coplanar leads, cathode indicated by a visible band on one end. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 2.54 mm lead pitch and 1.88 mm pad width recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (in uni-directional mode) | Connected to lower-potential side (e.g., ground or return path); conducts only when cathode is > anode by ≥ VF |
| Cathode | Reverse voltage sensing node | Marked end; connected to protected line (e.g., 12 V rail); clamps when voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %), low leakage, and robust reliability across temperature and life cycles |
| AEC-Q101 qualification | Validated for automotive-grade stress testing including HTOL, TC, and ESD, enabling use in engine control and body electronics |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying SMT manufacturing |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation material critical for safety compliance in enclosed automotive and industrial enclosures |
| Matte tin-plated leads | RoHS-compliant terminations meeting J-STD-002 solderability and JESD22-B102 mechanical pull strength standards |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and ground, triggered only during overvoltage events. Use Value: Limits rail voltage to ≤23.2 V during 500 W surges, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional-capable protection on differential or single-ended signal lines exposed to EMI and cable discharge. Use Value: Maintains signal integrity with <1 µA leakage at 14 V while clamping fast transients (<1 ns response) to prevent ADC saturation or latch-up. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Front-end protection for AC/DC adapters subjected to mains-borne surges and hot-plug transients. IC Role / Device Role / Timing Role: Primary-level TVS placed after bridge rectifier and before bulk capacitor to absorb line-side energy. Use Value: Withstands 40 A 8.3 ms forward surge and 21.6 A reverse surge, extending adapter lifetime in unstable grid environments. | Use Scenario: Secondary-side protection on Ethernet PHY or RS-485 transceiver lines in base station equipment. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, suppressing induced lightning surges on copper traces. Use Value: Low 80 °C/W RθJA allows effective self-cooling on standard FR-4, eliminating need for external heatsinks in space-constrained line cards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14AHE3/61 | AEC-Q101 qualified variant with identical electrical specs; differs only in whisker test class (JESD201 Class 2 vs. Class 1A) | Required for automotive safety-critical modules where enhanced whisker resistance is mandated | Select SMA5J14AHE3/61 when full AEC-Q101 compliance documentation and Class 2 whisker performance are contractually required |
| SMC5J14A-E3/52 | Same VWM/VC specs but in larger DO-214AB (SMC) package; higher IPPM (33.3 A) and lower RθJA (40 °C/W) | Better suited for high-power industrial motor drives where thermal margin and surge headroom exceed SMA5J14-E3/61 capability | Choose SMC5J14A-E3/52 when board layout permits larger footprint and system-level surge tests exceed 500 W |
Compared with SMA5J14AHE3/61, the SMA5J14-E3/61 offers identical clamping and surge ratings but targets commercial-grade automotive and industrial applications where Class 1A whisker resistance suffices; versus SMC5J14A-E3/52, it trades thermal and surge headroom for compact DO-214AC footprint and lower assembly cost.
Availability
SMA5J14-E3/61 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom line card development requiring stable component supply and traceable RoHS-compliant sourcing.
Supply support for SMA5J14-E3/61 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and consumer systems where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the polarity configuration of SMA5J14-E3/61?
The SMA5J14-E3/61 is a unidirectional TVS diode, meaning it conducts in forward bias like a standard diode and clamps only in reverse bias above its breakdown voltage. The cathode is marked by a visible band on the package body, and the device must be oriented with cathode toward the protected line and anode toward ground or lower potential. This configuration ensures proper clamping behavior during negative-going transients on positive rails.
Does SMA5J14-E3/61 meet automotive qualification standards?
Yes, SMA5J14-E3/61 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge per JESD22-A114. It is approved for use in automotive body electronics, infotainment power supplies, and non-safety-critical control modules. Note that the HE3 suffix variant provides additional JESD201 Class 2 whisker resistance for more demanding applications.
What is the maximum clamping voltage of SMA5J14-E3/61 under surge conditions?
The SMA5J14-E3/61 has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated 21.6 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a worst-case surge event, making it suitable for safeguarding 15 V tolerant components.
Can SMA5J14-E3/61 be used in bi-directional protection circuits?
No, SMA5J14-E3/61 is strictly unidirectional and not rated for symmetrical bi-directional surge suppression. For bi-directional applications, Vishay specifies parts with the "CA" suffix (e.g., SMA5J14CA), which have identical VWM and VC ratings in both polarities. Using SMA5J14-E3/61 in reverse-biased configurations beyond its specified limits may result in premature failure or inadequate protection.
What is the moisture sensitivity level (MSL) rating for SMA5J14-E3/61?
SMA5J14-E3/61 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can withstand reflow soldering profiles with a maximum peak temperature of 260 °C without preconditioning or baking. This simplifies manufacturing logistics and eliminates moisture-related defects such as popcorning during SMT assembly.
SMA5J14-E3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J14-E3/61 FAQ
1.How can I place an order for SMA5J14-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14-E3/61 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 SMA5J14-E3/61 reliable?
The price and inventory of SMA5J14-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J14-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14-E3/61?
SMA5J14-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14-E3/61 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 SMA5J14-E3/61?
For technical support, including SMA5J14-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14-E3/61 requirements.
6.How does Aetrix verify that SMA5J14-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J14-E3/61 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 SMA5J14-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J14-E3/61?
All SMA5J14-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14-E3/61, 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 SMA5J14-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J14-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J14-E3/61 Tags
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