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Vishay General Semiconductor - Diodes Division SMA5J14CA-E3/61
- Part No.:
- SMA5J14CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14CA-E3/61.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J14CA-E3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 14 V stand-off 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 23.2 V maximum clamping voltage (VC) - protecting automotive sensor interfaces and industrial I/O circuits against ESD and load dump.
For engineers reviewing the SMA5J14CA-E3/61 datasheet, SMA5J14CA-E3/61 pinout, SMA5J14CA-E3/61 application, or SMA5J14CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating at 10/1000 µs, RoHS-compliant matte tin terminals, MSL Level 1 reflow compatibility, and AEC-Q101 qualification availability (via HE3/HM3 variants).
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive transients.
The device is rated for continuous operation from −55 °C to +150 °C junction temperature, with thermal resistance of 80 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for surface-mount reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 15.6 V / 17.2 V - Measured at 1 mA test current; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 23.2 V - Clamped voltage at 21.6 A peak pulse; limits stress on downstream ICs during ISO 7637-2 Pulse 1/2a/5a events. |
| PPPM | 500 W - Peak pulse power handling (10/1000 µs waveform); sufficient for automotive load-dump and inductive switching surges. |
| IPPM | 21.6 A - Peak pulse current capacity; derived directly from PPPM/VC, validated per Fig. 1 and derated above 25 °C. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-power industrial enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; voltage clamping occurs regardless of polarity - essential for protecting AC signals or floating buses. |
| Case (body) | Non-electrical mechanical interface | Plastic molding provides insulation and mechanical stability; no electrical connection - no grounding or shielding requirement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential pairs (e.g., CAN, RS-485) or AC-coupled analog inputs without external polarity management. |
| 500 W peak pulse power | Withstands automotive load-dump transients (ISO 16750-2) and inductive switch-off spikes in motor control and solenoid drivers. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking; compatible with high-volume automated placement and reflow processes. |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime - critical for safety-critical sensor front-ends. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and engine crankshaft position sensors from ESD and alternator load dump. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output line and ground to clamp transients before they reach the microcontroller ADC input. Use Value: Limits clamped voltage to 23.2 V, preventing latch-up or damage to 3.3 V/5 V automotive MCUs while maintaining signal integrity below 14 V normal operation. | Use Scenario: Shielding PLC analog input channels (4–20 mA, 0–10 V) from field wiring-induced surges in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal line, positioned upstream of precision op-amp conditioning circuitry. Use Value: 21.6 A IPPM and 500 W rating absorb 1 kV/500 A surge events per IEC 61000-4-5, preserving measurement accuracy and system uptime. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) in portable medical devices against human-body ESD (±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector to shunt ESD energy before it couples into PHY IC. Use Value: Symmetric clamping ensures equal protection on both lines; 23.2 V VC prevents overshoot beyond USB receiver tolerance while maintaining <1 ns response time. | Use Scenario: Protecting Ethernet PHY magnetics secondary side and PoE-powered device interfaces from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side TVS on isolated data lines, coordinated with primary-side GDT or MOV for staged surge suppression. Use Value: 14 V VWM aligns with Ethernet common-mode voltage margins; bidirectional operation handles differential and common-mode transients without polarity bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14A-E3/61 | Unidirectional variant; same VWM, VBR, VC, and PPPM, but includes cathode band marking and forward conduction path. | Required where DC bias or rectification is present (e.g., 12 V supply rail protection); unsuitable for AC or differential signals. | Select SMA5J14A-E3/61 only when polarity is fixed and forward voltage drop matters; otherwise SMA5J14CA-E3/61 offers broader signal-path flexibility. |
| SMCJ14CA-E3/61 | Same bidirectional functionality but in larger SMC (DO-214AB) package; higher PPPM = 1500 W, VC = 23.2 V, IPPM = 64.5 A. | Used where higher surge energy must be absorbed (e.g., main power input, battery line); requires more PCB area and different pad layout. | Choose SMCJ14CA-E3/61 when system-level surge testing exceeds 500 W; retain SMA5J14CA-E3/61 for space-constrained signal-line protection. |
Compared with SMA5J14A-E3/61, the SMA5J14CA-E3/61 eliminates polarity dependency for universal placement on bidirectional lines; compared with SMCJ14CA-E3/61, it trades surge capacity for compactness - making it optimal for dense sensor node layouts where 500 W clamping suffices.
Availability
SMA5J14CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, consumer USB ports, and telecom line interfaces requiring stable component supply across design-in, prototyping, and volume production phases.
Supply support for SMA5J14CA-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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-power density packaging.
The SMA5J series is engineered specifically for high-energy transient suppression in space-constrained automotive and industrial applications, balancing 500 W surge capability with the compact DO-214AC footprint.
FAQ
What does the "CA" suffix indicate in SMA5J14CA-E3/61?
The "CA" suffix in SMA5J14CA-E3/61 denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both directions, with no anode/cathode distinction. This is confirmed in Vishay's datasheet Document Number 88875, which states "For bidirectional devices use CA suffix (e.g. SMA5J40CA)" and specifies that electrical characteristics apply in both directions. The SMA5J14CA-E3/61 has no polarity marking on the SMA package body.
Is SMA5J14CA-E3/61 AEC-Q101 qualified?
No, the SMA5J14CA-E3/61 variant is not AEC-Q101 qualified. Per Vishay's ordering information table, AEC-Q101 qualification requires the HE3 or HM3 suffix (e.g., SMA5J14CAHE3_A). The "E3" suffix indicates RoHS-compliant commercial grade only. Engineers requiring automotive-grade qualification must select SMA5J14CAHE3_A or SMA5J14CAHM3_A instead of SMA5J14CA-E3/61.
What is the maximum clamping voltage (VC) of SMA5J14CA-E3/61 and at what current is it specified?
The maximum clamping voltage (VC) of SMA5J14CA-E3/61 is 23.2 V, measured at the peak pulse current (IPPM) of 21.6 A under a 10/1000 µs waveform. This value is explicitly listed in the Electrical Characteristics table on page 2 of Vishay's Document Number 88875 and reflects worst-case clamping performance at TA = 25 °C with proper PCB thermal pads.
Can SMA5J14CA-E3/61 be used in place of a unidirectional TVS like SMA5J14A-E3/61?
SMA5J14CA-E3/61 can replace SMA5J14A-E3/61 only in bidirectional or AC-coupled applications - such as differential data lines (CAN, RS-485) or floating sensor outputs - where polarity independence is required. It must not replace SMA5J14A-E3/61 in DC-biased rails (e.g., 12 V supply protection), as the unidirectional part provides forward conduction and lower leakage at reverse bias, whereas SMA5J14CA-E3/61 conducts in both directions.
What is the thermal resistance (RθJA) of SMA5J14CA-E3/61 and how is it measured?
The typical junction-to-ambient thermal resistance (RθJA) of SMA5J14CA-E3/61 is 80 °C/W, measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's Thermal Characteristics table. This value assumes standard JEDEC high-K board conditions and is used to estimate junction temperature rise under sustained power dissipation - critical for derating in high-temperature environments like automotive under-hood applications.
SMA5J14CA-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:
- 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-E3/61 FAQ
1.How can I place an order for SMA5J14CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14CA-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 SMA5J14CA-E3/61 reliable?
The price and inventory of SMA5J14CA-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 SMA5J14CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J14CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14CA-E3/61?
SMA5J14CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14CA-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 SMA5J14CA-E3/61?
For technical support, including SMA5J14CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J14CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J14CA-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 SMA5J14CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J14CA-E3/61?
All SMA5J14CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14CA-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 SMA5J14CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J14CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J14CA-E3/61 Tags
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