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Vishay General Semiconductor - Diodes Division SMA5J15CA-E3/61
- Part No.:
- SMA5J15CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15CA-E3/61.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,093
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Product details
Overview
SMA5J15CA-E3/61 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 15 V stand-off voltage (VWM), 24.4 V clamping voltage (VC) at 20.5 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and automotive ECUs against inductive switching transients.
For engineers reviewing the SMA5J15CA-E3/61 datasheet, SMA5J15CA-E3/61 pinout, SMA5J15CA-E3/61 application, or SMA5J15CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, AEC-Q101 qualification eligibility, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative polarity transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low RθJA of 80 °C/W supports thermal reliability under repeated surge events.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), uses DO-214AC mechanical form factor, and delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature range - critical for under-hood automotive and industrial control applications where ambient thermal stress is significant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 16.7 V / 18.5 V - breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold across production lots. |
| VC @ IPPM | 24.4 V at 20.5 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress below 25 V absolute maximum ratings. |
| PPPM | 500 W - peak pulse power handling per single transient; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity testing. |
| ID @ VWM | <1.0 µA - reverse leakage at rated stand-off voltage; minimizes standby power loss in battery-powered sensor nodes. |
| TJ max | +150 °C - maximum junction temperature; enables operation in engine control units and industrial motor drives without derating. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows placement without orientation check during automated assembly. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad layout (5.0 mm × 5.0 mm per terminal) required for rated PPPM performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN bus, RS-485) without external polarity management. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin for 3.3 V/5 V logic interfaces. |
| MSL Level 1 rating | Supports standard Pb-free reflow profiles up to 260 °C peak without preconditioning - eliminates moisture sensitivity handling overhead in high-volume manufacturing. |
| AEC-Q101 qualification path | Base P/NHE3 variant available; enables direct use in automotive powertrain and chassis modules requiring qualified components. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at connector interface to shunt transients before reaching ADC front-end or signal conditioner. Use Value: Clamps 15 V nominal supply line surges to ≤24.4 V, preserving 24 V-tolerant op-amp input stages and preventing latch-up in microcontroller analog peripherals. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subject to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact inputs, positioned between terminal block and optocoupler input stage. Use Value: Withstands 500 W pulses without degradation, maintaining channel integrity across >100,000 switching cycles in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Transient suppression on Ethernet PHY differential pairs or PoE data lines susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protection device placed after common-mode chokes and before magnetics, handling asymmetrical surges. Use Value: Symmetric clamping ensures equal protection on both TX+/TX− lines, preventing skew-induced data corruption during 10/1000 µs transients. |
Use Scenario: Output-side surge protection in 12 V/5 V wall adapters for smart home devices, guarding against mains coupling and hot-plug events. IC Role / Device Role / Timing Role: Final-stage TVS on DC output rail, located immediately after secondary-side rectifier and filter capacitor. Use Value: 24.4 V clamping prevents overvoltage damage to USB-PD controllers and PMICs rated for 25 V absolute maximum input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ15CA | Same 15 V VWM, 24.4 V VC, but lower PPPM (400 W); higher ID (5 µA vs. 1 µA). | Marginally lower surge energy handling; suitable for non-automotive consumer applications with relaxed IEC 61000-4-5 requirements. | Select when cost sensitivity outweighs need for full 500 W rating or when AEC-Q101 qualification is not required. |
| ON Semiconductor 1.5SMC15CA | Same VWM/VC specs, but larger SMC (DO-214AB) package (7.1 mm × 6.2 mm vs. 4.9 mm × 3.9 mm); identical thermal resistance. | Requires PCB layout change; better suited for high-reliability industrial designs where board space is less constrained than in automotive modules. | Choose when existing SMC footprint is standardized and thermal margin must be preserved without redesigning pad layout. |
Compared with SMA5J15CA-E3/61, SMAJ15CA offers lower cost but reduced surge robustness, while 1.5SMC15CA trades compactness for mechanical ruggedness and legacy footprint compatibility - making SMA5J15CA-E3/61 optimal for space-constrained, high-surge automotive and industrial SMT designs.
Availability
SMA5J15CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter outputs requiring stable component supply with traceable RoHS-compliant sourcing.
Supply support for SMA5J15CA-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, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, thermally demanding environments - targeting automotive, industrial, and telecom applications where 500 W surge capability and AEC-Q101 readiness are essential.
FAQ
What is the polarity configuration of SMA5J15CA-E3/61?
SMA5J15CA-E3/61 is a bidirectional TVS diode with symmetrical terminal construction and no polarity marking. Unlike unidirectional variants (e.g., SMA5J15A), it conducts equally in both directions, making it suitable for AC signal lines, differential buses, and floating power rails where voltage polarity reversal occurs. This eliminates orientation errors during automated placement and simplifies schematic symbol usage.
Does SMA5J15CA-E3/61 meet automotive qualification standards?
SMA5J15CA-E3/61 itself is RoHS-compliant commercial-grade; however, the AEC-Q101-qualified version is designated SMA5J15CAHE3_A (with HE3 suffix). The "E3" in SMA5J15CA-E3/61 indicates RoHS compliance only - not automotive qualification. For automotive applications requiring AEC-Q101, specify the HE3 or HM3 variant with appropriate revision code and confirm qualification status via Vishay's official product change notices.
What is the recommended PCB pad layout for SMA5J15CA-E3/61?
The datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W peak pulse power. Smaller pads cause thermal derating: at 25 °C ambient, power handling drops per Figure 2. Pad design must follow DO-214AC outline dimensions (4.93 mm × 3.99 mm body), with 1.25 mm lead spacing and 0.76 mm minimum solder fillet height to ensure mechanical reliability under thermal cycling.
How does SMA5J15CA-E3/61 compare to SMAJ15CA in surge performance?
SMA5J15CA-E3/61 delivers 500 W peak pulse power (PPPM) versus SMAJ15CA's 400 W, reflecting higher energy absorption capability for IEC 61000-4-5 Level 4 testing. Both share identical VWM (15 V) and VC (24.4 V), but SMA5J15CA-E3/61 exhibits lower reverse leakage (<1.0 µA vs. 5 µA), improving efficiency in battery-backed systems. The SMA5J series also features tighter VBR tolerance (±5.5%) compared to SMAJ's ±6.7%.
Can SMA5J15CA-E3/61 be used in place of a unidirectional TVS like SMA5J15A?
No - SMA5J15CA-E3/61 is not a drop-in replacement for SMA5J15A. While both share VWM and VC values, SMA5J15A is unidirectional (cathode-banded) and conducts only in reverse bias, whereas SMA5J15CA-E3/61 clamps in both directions. Substituting without circuit review risks unintended forward conduction in DC-biased paths or failure to suppress negative transients in AC-coupled circuits. Always verify signal topology and bias conditions before interchange.
SMA5J15CA-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- 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)
SMA5J15CA-E3/61 FAQ
1.How can I place an order for SMA5J15CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15CA-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 SMA5J15CA-E3/61 reliable?
The price and inventory of SMA5J15CA-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 SMA5J15CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J15CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15CA-E3/61?
SMA5J15CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15CA-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 SMA5J15CA-E3/61?
For technical support, including SMA5J15CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J15CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J15CA-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 SMA5J15CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J15CA-E3/61?
All SMA5J15CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15CA-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 SMA5J15CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J15CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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