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Vishay General Semiconductor - Diodes Division SMCJ15-E3/57T
- Part No.:
- SMCJ15-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15-E3/57T.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,877
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Product details
Overview
SMCJ15-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. 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 - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ15-E3/57T datasheet, SMCJ15-E3/57T pinout, SMCJ15-E3/57T application, or SMCJ15-E3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity marking, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds its breakdown threshold (VBR min = 16.7 V, max = 18.5 V at IT = 1 mA), it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O pins.
Thermally, it sustains 150 °C maximum junction temperature and delivers 6.5 W steady-state power dissipation on infinite heatsink at TA = 50 °C. The DO-214AB package supports automated placement and meets UL 94 V-0 flammability rating, with polarity indicated by cathode band marking per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche onset range defining turn-on consistency |
| VC @ IPPM | 24.4 V at 61.5 A - clamping voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak transient power handling capacity per standard waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing (8.0 mm × 8.0 mm recommended) |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded compound meeting UL 94 V-0. Cathode marked by single band on body; leads are matte tin plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or CAN_H); avalanche occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across temperature and lifetime |
| Low incremental surge resistance | Minimizes VC rise under high IPPM, improving clamping precision for sensitive 3.3 V/5 V logic |
| MSL Level 1 (J-STD-020) | Enables standard reflow without moisture sensitivity concerns - no baking required pre-assembly |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance, ensuring long-term solder joint integrity in vibration-prone systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units against load dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Shunt clamping device placed between battery rail and DC-DC converter input. Use Value: Limits voltage to ≤24.4 V during 1500 W surges, preventing damage to downstream LDOs and MCU power domains. | Use Scenario: Safeguarding analog outputs of pressure sensors in PLC modules exposed to inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable protection on 4–20 mA loop lines (configured unidirectionally with cathode to signal). Use Value: Clamps fast-rising transients (<1 ns response) while maintaining <1.0 µA leakage at 15 V, preserving sensor accuracy. |
| Consumer Device USB Port Protection | Telecom Base Station DC Input Protection |
Use Scenario: Guarding VBUS line in USB 2.0 host ports against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between connector and USB controller's VBUS pin. Use Value: Delivers 1500 W peak power handling with 24.4 V clamping, meeting IEC 61000-4-2 Level 4 (±15 kV air) requirements. | Use Scenario: Securing -48 V DC input of telecom line cards against lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Reverse-connected unidirectional TVS (cathode to -48 V rail) for negative-rail clamping. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), supporting high-energy threat models in central office environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients; limited thermal margin in high-ambient industrial settings | Select when board space is constrained and surge threats are below 400 W - not a drop-in replacement for SMCJ15-E3/57T |
| SMCJ15AHE3/57T | Identical electrical specs but AEC-Q101 qualified (HE3 suffix), same DO-214AB package and pinout | Required for automotive production; identical layout and thermal behavior | Direct functional and mechanical replacement where automotive qualification is mandatory |
Compared with SMAJ15A-E3/61 and SMCJ15AHE3/57T, the SMCJ15-E3/57T offers optimal balance of 1500 W surge capacity, industry-standard DO-214AB thermal performance, and commercial-grade cost - making it preferred for industrial and Tier-2 automotive designs where full AEC-Q101 is not mandated.
Availability
SMCJ15-E3/57T is available at Aetrix Electronics and suitable for automotive ECU power conditioning, industrial sensor interface protection, and telecom DC input safeguarding requiring stable component supply and traceable RoHS-compliant sourcing.
Supply support for SMCJ15-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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where clamping precision and surge endurance are critical.
FAQ
What is the breakdown voltage range for SMCJ15-E3/57T?
The SMCJ15-E3/57T has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This defines the minimum and maximum voltage at which the device enters avalanche conduction - a key parameter for ensuring reliable clamping onset without premature triggering in 15 V nominal systems.
Is SMCJ15-E3/57T suitable for automotive applications?
The SMCJ15-E3/57T is RoHS-compliant and manufactured in an AEC-Q101-qualified process flow (though the E3 suffix denotes commercial grade). For production automotive use, Vishay specifies the HE3-suffix variant (e.g., SMCJ15AHE3/57T); however, the SMCJ15-E3/57T remains widely deployed in automotive aftermarket and Tier-2 subsystems where full qualification is not mandated.
What is the maximum clamping voltage of SMCJ15-E3/57T under surge conditions?
The SMCJ15-E3/57T exhibits a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A using the standardized 10/1000 µs waveform. This value is measured at the device terminals and represents the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does SMCJ15-E3/57T have polarity marking, and how is it oriented in circuit?
Yes, SMCJ15-E3/57T is unidirectional and features a cathode band marking on the DO-214AB body. In application, the banded (cathode) end connects to the line being protected (e.g., 12 V rail), while the anode connects to ground - enabling reverse-biased clamping during overvoltage events.
What is the thermal resistance and recommended PCB layout for SMCJ15-E3/57T?
The SMCJ15-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve this rating, PCB layout must use minimum recommended pad dimensions and avoid excessive thermal isolation - critical for sustaining repeated surge events without thermal runaway.
SMCJ15-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 55.8A
- 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)
SMCJ15-E3/57T FAQ
1.How can I place an order for SMCJ15-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15-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 SMCJ15-E3/57T reliable?
The price and inventory of SMCJ15-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 SMCJ15-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15-E3/57T?
SMCJ15-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15-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 SMCJ15-E3/57T?
For technical support, including SMCJ15-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15-E3/57T requirements.
6.How does Aetrix verify that SMCJ15-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15-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 SMCJ15-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15-E3/57T?
All SMCJ15-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15-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 SMCJ15-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ15-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15-E3/57T Tags
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