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Vishay General Semiconductor - Diodes Division SMCJ15-E3/9AT
- Part No.:
- SMCJ15-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15-E3/9AT.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,125
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Product details
Overview
SMCJ15-E3/9AT 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 - ideal for safeguarding MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial systems.
For engineers reviewing the SMCJ15-E3/9AT datasheet, SMCJ15-E3/9AT pinout, SMCJ15-E3/9AT application, or SMCJ15-E3/9AT equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and RoHS-compliant matte tin plating - all critical for high-reliability board-level surge protection design and automotive-grade production validation.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below its 15 V reverse stand-off voltage (VWM) and rapidly transitions to low-impedance conduction above its 16.7–18.5 V breakdown voltage (VBR) range. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time to sub-nanosecond transients.
Thermal design is supported by a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W on standard 8.0 mm × 8.0 mm copper pads. It sustains 200 A non-repetitive forward surge current (IFSM) and operates across –55 °C to +150 °C junction temperature range.
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 - Breakdown occurs within this range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - Clamped voltage seen by protected circuit during full 61.5 A 10/1000 µs surge |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - Low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial environments without derating |
| MSL Level | Level 1 (per J-STD-020) - Supports lead-free reflow up to 260 °C peak without preconditioning |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded UL 94 V-0 compound and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (reverse-biased during protection) | Connected to protected line side; conducts only during reverse overvoltage events |
| Cathode | Forward current exit / clamping reference | Marked with band; tied to system ground or lower-potential rail to shunt surge energy |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Enables tight clamping (24.4 V at 61.5 A) to limit voltage overshoot on protected ICs |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, supporting automated SMT assembly |
| RoHS-compliant E3 suffix | Meets JEDEC JS709A halogen-free and EU Directive 2011/65/EU hazardous substance restrictions |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and ground, absorbing >1500 W surges while holding downstream voltage ≤24.4 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic devices by limiting transient excursion well below absolute maximum ratings. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across signal and return paths to clamp ESD and inductive kickback from solenoid drivers. Use Value: Maintains signal fidelity with <1.0 µA leakage at 15 V, avoiding offset errors in precision current-loop receivers. |
| Consumer Device USB Port Protection | Telecom Base Station DC Power Input |
Use Scenario: Secondary overvoltage protection on VBUS line of USB 2.0 host ports subjected to hot-plug and cable-induced surges. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS placed upstream of USB power switch, activated within picoseconds of overvoltage detection. Use Value: Clamps 10/1000 µs transients to 24.4 V before they reach 5.5 V-rated USB controller ICs, meeting IEC 61000-4-5 Level 3 immunity. | Use Scenario: Primary surge suppression on –48 V DC input rails of telecom remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: High-power TVS mounted directly at connector entry point, shunting multi-kW transients to chassis ground before entering DC/DC converters. Use Value: Withstands 200 A single-half-sine surge (IFSM), enabling compliance with GR-1089-CORE telecom surge immunity requirements. |
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-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (24.4 V same, but lower IPPM = 16.4 A) | Suitable for space-constrained consumer PCBs where 1500 W rating is not required | Select SMCJ15-E3/9AT when full 1500 W surge handling and AEC-Q101 qualification are mandatory |
| SMCJ15AHE3/9AT | Identical electrical specs and package, but AEC-Q101 qualified (HE3 suffix) vs. commercial-grade E3 | Required for automotive OEM designs requiring component-level automotive qualification evidence | Choose SMCJ15-E3/9AT for industrial/commercial use; upgrade to HE3 version only if AEC-Q101 documentation is contractually required |
Compared with SMAJ15A-E3/61T and SMCJ15AHE3/9AT, the SMCJ15-E3/9AT delivers full 1500 W surge capacity in a ruggedized DO-214AB package with commercial-grade reliability and verified 1.0 µA leakage - making it optimal for cost-sensitive industrial and telecom applications where AEC-Q101 is unnecessary but high-energy clamping is essential.
Availability
SMCJ15-E3/9AT is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, consumer device USB port protection, and telecom base station DC power input requiring stable component supply and traceable sourcing.
Supply support for SMCJ15-E3/9AT 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® transient voltage suppressor family, engineered specifically for high-energy, surface-mount surge protection in automotive, industrial, and communications infrastructure where robustness and repeatable clamping behavior are critical.
FAQ
What is the clamping voltage of the SMCJ15-E3/9AT under maximum rated surge current?
The SMCJ15-E3/9AT has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated 61.5 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees predictable voltage limiting during surge events, protecting downstream 3.3 V or 5 V ICs from overvoltage damage. The SMCJ15-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ15-E3/9AT suitable for automotive applications?
The SMCJ15-E3/9AT is RoHS-compliant and manufactured in a commercial-grade configuration (E3 suffix), not AEC-Q101 qualified. While it shares the same DO-214AB package and electrical specs as the AEC-Q101-qualified SMCJ15AHE3/9AT, the SMCJ15-E3/9AT itself is intended for industrial and consumer applications. For automotive use, engineers must specify the HE3 variant; the SMCJ15-E3/9AT does not carry AEC-Q101 certification documentation.
What is the meaning of the 'E3/9AT' suffix in SMCJ15-E3/9AT?
The 'E3' suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The '9AT' denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units - optimized for high-volume SMT placement. This differs from '57T' (7-inch reel, 850 units) and confirms the SMCJ15-E3/9AT is configured for automated manufacturing flow.
How does the SMCJ15-E3/9AT compare to bi-directional TVS diodes like SMCJ15CA?
The SMCJ15-E3/9AT is unidirectional and functions only during reverse-biased overvoltage events, with polarity marked by a cathode band. In contrast, SMCJ15CA is bi-directional and protects both positive and negative transients without polarity sensitivity. The SMCJ15-E3/9AT offers identical VWM (15 V) and VC (24.4 V) but is unsuitable for AC-coupled or dual-rail signal lines where bidirectional clamping is needed - use SMCJ15CA instead for such cases.
What thermal considerations apply when mounting the SMCJ15-E3/9AT on a PCB?
The SMCJ15-E3/9AT requires minimum 8.0 mm × 8.0 mm copper pads per terminal to achieve its rated 1500 W PPPM and 61.5 A IPPM. Its RθJA is 75 °C/W and RθJL is 15 °C/W - meaning thermal performance depends heavily on copper area and layer count. For sustained operation near TJ max (+150 °C), designers must ensure adequate copper pour and avoid enclosing the device under shields; the SMCJ15-E3/9AT is not rated for zero-airflow derating beyond datasheet curves.
SMCJ15-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SMCJ15-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCJ15-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15-E3/9AT?
SMCJ15-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15-E3/9AT 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-E3/9AT?
For technical support, including SMCJ15-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15-E3/9AT requirements.
6.How does Aetrix verify that SMCJ15-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15-E3/9AT?
All SMCJ15-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15-E3/9AT Tags
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