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Vishay General Semiconductor - Diodes Division SMCJ15A-E3/57T
- Part No.:
- SMCJ15A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15A-E3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,818
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Product details
Overview
SMCJ15A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMCJ15A-E3/57T datasheet, SMCJ15A-E3/57T pinout, SMCJ15A-E3/57T application, or SMCJ15A-E3/57T equivalent, key selection criteria include clamping performance under 61.5 A surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity with cathode band marking, and RoHS-compliant matte tin-plated leads suitable for automated placement on consumer, automotive, and industrial PCBs.
Technical Context
The SMCJ15A-E3/57T employs a glass passivated silicon junction optimized for fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and transient events per IEC 61000-4-2/4-4/4-5. Its breakdown voltage range (16.7–18.5 V at 1 mA test current) ensures reliable triggering above system operating voltage while maintaining low leakage (<1.0 µA at 15 V).
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with derating applied above 25 °C ambient per Fig. 2. The device meets MSL Level 1 per J-STD-020 and is rated for 260 °C lead-free reflow peak temperature, making it compatible with standard SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold ensuring consistent turn-on behavior across production lots. |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 1500 W - Peak transient energy handling capacity; enables protection against high-energy surges in automotive and industrial environments. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in battery-powered sensors. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements when operating near PD limit (6.5 W). |
| Polarity | Unidirectional - Cathode marked by band; prevents reverse conduction in DC-biased lines such as power rails and MOSFET gate drivers. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H). Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per datasheet Fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or bias conditions. |
| Cathode | Clamping node | Marked with band; connected to protected line (e.g., 12 V rail); initiates avalanche breakdown when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment without height interference. |
| Glass passivated junction | Ensures stable long-term reliability and resistance to moisture ingress and environmental degradation in harsh industrial settings. |
| 1500 W peak pulse power | Provides robust immunity against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges in automotive ECUs and motor drives. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; this E3/57T variant is commercial-grade but shares identical electrical specs and construction. |
| MSL Level 1 rating | Eliminates need for dry pack or baking prior to reflow, reducing manufacturing overhead and preventing moisture-induced popcorning. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) and body control modules (BCMs) from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and ground, triggered within nanoseconds to limit overvoltage to ≤24.4 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a events up to 1500 W. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA or 0–10 V) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff-mode protector on signal line, absorbing ESD strikes and field-induced surges without affecting DC accuracy. Use Value: Maintains signal fidelity with <1.0 µA leakage at 15 V, while clamping transients to safe levels for precision ADC front-ends. |
| Consumer USB Power Port Protection | Telecom DC Feeder Line Protection |
Use Scenario: Shielding 5 V/9 V USB-C power delivery paths in smart home hubs and docking stations from hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VBUS line, coordinated with upstream current limiting to meet USB PD 3.0 surge requirements. Use Value: Delivers sub-1 ns response and 24.4 V clamping to prevent damage to USB PD controllers and port switches during ±8 kV contact ESD. |
Use Scenario: Protecting -48 V DC feeder lines in telecom base station power supplies from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: High-power unidirectional suppressor mounted at line entry point, shunting surge energy to chassis ground. Use Value: Handles 1500 W peak pulses with minimal voltage overshoot, preserving uptime of PoE injectors and remote radio units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM and VC. | Suitable for space-constrained, lower-energy applications (e.g., portable electronics); not recommended for automotive load dump. | Select when board area is critical and surge threat level is limited to IEC 61000-4-2 Level 3. |
| SMCJ15CA-E3/57T | Bidirectional version; symmetric VBR (16.7–18.5 V) in both directions; same PPPM and package. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus); unsuitable for DC power rails with defined polarity. | Choose only when protecting bidirectional data lines where reverse voltage must also be clamped. |
Compared with SMBJ15A-E3/52T, the SMCJ15A-E3/57T delivers 2.5× higher surge power handling in the same footprint family, while SMCJ15CA-E3/57T trades unidirectional optimization for symmetrical clamping-making the original SMCJ15A-E3/57T optimal for cost-sensitive, high-energy DC rail protection.
Availability
SMCJ15A-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, consumer USB power port protection, and telecom DC feeder line protection requiring stable component supply and full traceability.
Supply support for SMCJ15A-E3/57T 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, efficiency, and application-specific performance.
The SMCJ series was developed for high-power transient suppression in demanding environments including automotive, industrial, and telecom infrastructure, balancing clamping precision, surge robustness, and manufacturability.
FAQ
What is the maximum clamping voltage of the SMCJ15A-E3/57T under surge conditions?
The SMCJ15A-E3/57T has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current of 61.5 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 24.4 V during transient events. The clamping performance is guaranteed across the full operating temperature range and is validated in Vishay's production testing for every SMCJ15A-E3/57T lot.
Is the SMCJ15A-E3/57T suitable for automotive applications?
The SMCJ15A-E3/57T is RoHS-compliant and built on the same die and package as AEC-Q101 qualified variants (e.g., SMCJ15AHE3), but this specific E3/57T ordering code is commercial-grade and not certified to AEC-Q101. For production automotive use, engineers should specify the HE3 or HM3 suffix. However, the SMCJ15A-E3/57T shares identical electrical characteristics, thermal performance, and mechanical construction-making it appropriate for prototyping, non-safety-critical automotive subsystems, and industrial applications with similar surge profiles.
How does the SMCJ15A-E3/57T differ from the SMBJ15A-E3/52T?
The SMCJ15A-E3/57T differs from the SMBJ15A-E3/52T primarily in package size and surge capability: SMCJ uses the larger SMC (DO-214AB) case versus SMB (DO-214AA), enabling 1500 W peak pulse power (vs. 600 W) and higher IPPM (61.5 A vs. 24.4 A). Both share identical VWM (15 V), VBR range, and VC (24.4 V), but the SMCJ15A-E3/57T is required where higher energy transients-such as automotive load dump or industrial lightning surges-are expected.
What is the meaning of the "E3/57T" suffix in SMCJ15A-E3/57T?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "57T" specifies packaging in 7-inch plastic tape and reel with a base quantity of 850 units. This format complies with EIA-481 standards and is optimized for high-speed SMT placement. The "E3" designation confirms compliance with EU RoHS Directive 2011/65/EU and absence of restricted substances, and "57T" ensures compatibility with standard feeder systems used in electronics manufacturing.
Can the SMCJ15A-E3/57T be used in bidirectional signal lines like RS-485?
No-the SMCJ15A-E3/57T is a unidirectional TVS diode, with polarity defined by the cathode band; it conducts only when the cathode is at higher potential than the anode. For bidirectional signal lines such as RS-485, CAN, or Ethernet PHY interfaces, the bidirectional variant SMCJ15CA-E3/57T must be used. Using the unidirectional SMCJ15A-E3/57T on AC-coupled or dual-polarity lines risks forward conduction during negative half-cycles and failure to clamp in one direction.
SMCJ15A-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ15A-E3/57T FAQ
1.How can I place an order for SMCJ15A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15A-E3/57T 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 SMCJ15A-E3/57T reliable?
The price and inventory of SMCJ15A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15A-E3/57T?
SMCJ15A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15A-E3/57T 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 SMCJ15A-E3/57T?
For technical support, including SMCJ15A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15A-E3/57T requirements.
6.How does Aetrix verify that SMCJ15A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15A-E3/57T 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 SMCJ15A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15A-E3/57T?
All SMCJ15A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15A-E3/57T, 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 SMCJ15A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ15A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15A-E3/57T Tags
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