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Vishay General Semiconductor - Diodes Division SMCJ24C-E3/9AT
- Part No.:
- SMCJ24C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24C-E3/9AT.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,558
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Product details
Overview
SMCJ24C-E3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for clamping voltage transients on signal or power lines. It features a 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage (VC) at 38.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMCJ24C-E3/9AT datasheet, SMCJ24C-E3/9AT pinout, SMCJ24C-E3/9AT application, or SMCJ24C-E3/9AT equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 rating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ24C-E3/9AT operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with identical VBR min/max (26.7 V / 29.5 V) and VC (38.9 V). Its low incremental surge resistance enables effective energy diversion during ESD or lightning-induced transients without thermal runaway.
Designed for surface-mount use in high-reliability environments, it supports junction temperatures from –55 °C to +150 °C, meets UL 497B recognition (QVGQ2), and delivers stable clamping performance under repetitive surge stress when mounted per recommended pad layout - critical for automotive body electronics and industrial I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V - guaranteed breakdown range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 38.9 V at 38.6 A - clamped voltage during 10/1000 μs surge, limiting downstream device stress |
| PPPM | 1500 W - peak transient power handling capacity, enabling robust protection against IEC 61000-4-5 surges |
| ID @ VWM | 1.0 μA - ultra-low leakage ensures minimal standby power loss and signal integrity |
| TJ max. | +150 °C - extended thermal rating supports under-hood automotive and high-ambient industrial use |
| Package | DO-214AB (SMCJ) - industry-standard SMT outline with 7.75 mm × 6.22 mm footprint and J-bend leads |
Pinout & Package
DO-214AB (SMCJ) package: surface-mount, bi-directional device with no polarity marking; terminals are unmarked anode/cathode pair - symmetric conduction eliminates orientation dependency during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional transient clamp node | Both terminals function identically - connects across protected line and ground (or between differential lines) without polarity constraint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal-line protectors |
| Matte tin plated leads | Ensures solderability per J-STD-002 and JESD 22-B102, with JESD 201 Class 1A whisker resistance |
Applications
| Automotive Body Control Module | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus and switch inputs in door modules and lighting controllers from load dump and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed across signal-to-ground to clamp ±2 kV ESD and 100 V load dump transients. Use Value: Prevents latch-up or damage to microcontrollers and transceivers while maintaining signal fidelity below 24 V operating range. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O of pressure/temperature sensors in PLC field terminals. IC Role / Device Role / Timing Role: Transient suppressor connected between sensor output line and system ground to absorb inductive switching spikes. Use Value: Limits clamping voltage to 38.9 V, keeping protected circuitry within safe operating area during 1500 W surge events. |
| Telecom Line Interface | Consumer Appliance Motor Drive |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bi-directional TVS deployed on differential pairs to suppress common-mode transients up to 10/1000 μs waveform. Use Value: Maintains signal integrity by clamping without forward conduction, leveraging symmetrical VBR and low capacitance. | Use Scenario: Protecting gate drivers and MCU I/O in washing machine motor control boards from back-EMF spikes. IC Role / Device Role / Timing Role: Clamp device placed across H-bridge supply rails or between driver outputs and ground. Use Value: Absorbs 200 A non-repetitive surge (IFSM) and sustains repeated 1500 W pulses without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (43.5 V at 11.7 A) | Targeted for space-constrained consumer electronics, not automotive-grade | Select when board area is limited and surge energy is lower than 1500 W |
| SMCJ24CAHE3/9AT | Identical electrical specs but AEC-Q101 qualified version with HE3 suffix (JESD 201 Class 2 whisker test) | Required for automotive safety-critical subsystems demanding enhanced process reliability | Choose for ASIL-B or higher automotive designs where whisker resistance beyond Class 1A is mandated |
Compared with SMAJ24CA-E3/61T and SMCJ24CAHE3/9AT, the SMCJ24C-E3/9AT offers optimal balance of high-energy clamping (1500 W), automotive-qualified construction (AEC-Q101), and standard J-bend leadform - making it preferred for industrial and Tier-2 automotive applications where cost, reliability, and surge margin must coexist.
Availability
SMCJ24C-E3/9AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, telecom line protection, and appliance motor drive systems requiring stable component supply and full traceability.
Supply support for SMCJ24C-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 and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® transient suppressor family, engineered specifically for high-energy, surface-mount surge protection in harsh environments - targeting automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the SMCJ24C-E3/9AT under a 10/1000 μs surge?
The SMCJ24C-E3/9AT clamps to a maximum of 38.9 V when subjected to its rated peak pulse current of 38.6 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCJ24C-E3/9AT suitable for automotive applications?
Yes, the SMCJ24C-E3/9AT is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for non-safety-critical automotive applications such as body control modules, lighting systems, and infotainment interfaces. It carries UL 497B recognition and meets JESD 201 Class 1A whisker resistance - confirming suitability for under-hood and cabin environments.
Does the SMCJ24C-E3/9AT have polarity markings?
No, the SMCJ24C-E3/9AT is a bi-directional TVS diode and carries no polarity marking on the DO-214AB package. Its symmetrical breakdown characteristics mean either terminal may connect to the line or ground - eliminating orientation constraints during automated placement and simplifying PCB layout for differential or AC-coupled protection schemes.
What is the maximum leakage current of the SMCJ24C-E3/9AT at its stand-off voltage?
At its 24 V stand-off voltage (VWM), the SMCJ24C-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor circuits and minimizes power loss in battery-operated systems - verified per the Vishay datasheet revision 11-Dec-12, Document Number 88394.
How does the SMCJ24C-E3/9AT differ from the SMCJ24A-E3/9AT?
The SMCJ24C-E3/9AT is bi-directional, while the SMCJ24A-E3/9AT is uni-directional. The 'C' suffix denotes symmetrical clamping in both polarities, essential for AC signal lines or ungrounded systems; the 'A' version has a cathode band and conducts only in reverse bias. Their VWM, VBR, and PPPM ratings are identical, but circuit integration differs fundamentally due to polarity dependence.
SMCJ24C-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 34.9A
- 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)
SMCJ24C-E3/9AT FAQ
1.How can I place an order for SMCJ24C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24C-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 SMCJ24C-E3/9AT reliable?
The price and inventory of SMCJ24C-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 SMCJ24C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ24C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24C-E3/9AT?
SMCJ24C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24C-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 SMCJ24C-E3/9AT?
For technical support, including SMCJ24C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ24C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ24C-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 SMCJ24C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ24C-E3/9AT?
All SMCJ24C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24C-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 SMCJ24C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ24C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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