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Vishay General Semiconductor - Diodes Division SMCJ24C-E3/57T
- Part No.:
- SMCJ24C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24C-E3/57T.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,170
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Product details
Overview
SMCJ24C-E3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection on signal and power lines. It features a 24 V stand-off voltage (VWM), 38.9 V clamping voltage (VC) at 38.6 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the SMCJ24C-E3/57T datasheet, SMCJ24C-E3/57T pinout, SMCJ24C-E3/57T application, or SMCJ24C-E3/57T equivalent, key selection criteria include bi-directional clamping symmetry, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ24C-E3/57T operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with minimum/maximum VBR of 26.7 V / 29.5 V at 1.0 mA test current. Its low incremental surge resistance enables rapid energy diversion during transients induced by inductive switching or ESD events.
Thermal performance is defined by RθJA = 75 °C/W (junction-to-ambient, on recommended pad layout) and RθJL = 15 °C/W (junction-to-lead), supporting reliable operation up to TJ = +150 °C. The device meets JESD201 Class 1A whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 26.7 V / 29.5 V at IT = 1.0 mA - ensures consistent bi-directional breakdown threshold across production lots |
| VC @ IPPM | 38.9 V at 38.6 A - clamping voltage limits protected circuit stress during 10/1000 μs surge |
| PPPM | 1500 W - peak transient power handling capacity under standardized surge waveform |
| ID @ VWM | 1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ range | –55 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Package | DO-214AB (SMCJ) - surface-mount outline optimized for automated placement and thermal relief via 8 mm × 8 mm pads |
Pinout & Package
SMCJ24C-E3/57T uses the DO-214AB (SMCJ) package: molded plastic case with J-bend leads, no polarity marking (bi-directional configuration). Terminals are matte tin plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between terminals; either lead connects to protected line or ground reference |
| Case (body) | Non-conductive molding compound | UL 94 V-0 rated; provides electrical isolation and mechanical protection without thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; compatible with high-volume SMT assembly lines |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime; resists humidity-induced parameter drift |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during fast transients, protecting downstream CMOS inputs and analog front-ends |
| 1500 W peak pulse rating | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed between signal line and chassis ground to shunt transients before reaching IC pins. Use Value: Maintains signal fidelity below 38.9 V clamping while surviving repeated 1500 W surges - critical for ASIL-B compliant systems. |
Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage suppression element at terminal block entry point, upstream of optocoupler or Schmitt trigger input. Use Value: Enables >100,000 surge cycles at 38.6 A without parameter shift, reducing field failure rates in factory automation equipment. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding RS-485 transceiver data lines from lightning-induced surges in outdoor base stations and network repeaters. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to common ground, absorbing common- and differential-mode transients. Use Value: Symmetrical bi-directional response ensures identical clamping on TX+/TX−, preserving signal integrity during ±1 kV EFT bursts. |
Use Scenario: Adding secondary-level surge immunity to USB-C and barrel-jack power inputs in smart home hubs and audio devices. IC Role / Device Role / Timing Role: Last-stage protector between input connector and primary DC-DC converter, limiting inrush and ESD stress. Use Value: 1.0 μA leakage at 24 V prevents standby current drain; RoHS-compliant matte tin leads ensure solder joint reliability in consumer reflow profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC24C | Lower PPPM (600 W), same VWM (24 V), smaller DO-214AC (SMA) package | Reduced surge margin; suitable only for IEC 61000-4-2 ESD (±15 kV air), not IEC 61000-4-5 surges | Select when board space is constrained and surge threat level is limited to ESD-only environments |
| SMCJ24CAHE3/57T | Identical electrical specs; AEC-Q101 qualified version with HE3 suffix (JESD201 Class 2 whisker test) | Same functional performance; required for automotive OEM programs mandating Class 2 whisker resistance | Choose for Tier 1 automotive supply chains where enhanced whisker resistance documentation is contractually required |
Compared with SMCJ24C-E3/57T, SAC24C trades surge robustness for footprint reduction, while SMCJ24CAHE3/57T delivers identical protection with enhanced process validation - enabling design reuse across commercial and automotive programs with minimal qualification overhead.
Availability
SMCJ24C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ24C-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of the SMCJ24C-E3/57T under a 10/1000 μs surge?
The SMCJ24C-E3/57T has a maximum clamping voltage (VC) of 38.9 V at 38.6 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCJ24C-E3/57T suitable for automotive applications?
Yes, the SMCJ24C-E3/57T is RoHS-compliant and qualified to AEC-Q101 for stress testing including temperature cycling, high-temperature reverse bias, and ESD. While it carries the commercial-grade E3 suffix (not HE3), its construction, glass passivation, and DO-214AB package meet baseline automotive environmental requirements - commonly used in non-safety-critical modules like body control units and infotainment power rails.
How does the bi-directional design of the SMCJ24C-E3/57T affect its use in circuit protection?
The SMCJ24C-E3/57T has no polarity marking and exhibits symmetrical breakdown in both directions, making it ideal for AC-coupled lines, differential buses (e.g., RS-485), or any application where voltage reversals may occur. Unlike uni-directional variants, it protects against positive and negative transients without requiring orientation verification during placement - simplifying layout and reducing assembly errors.
What is the thermal resistance of the SMCJ24C-E3/57T, and how does it impact PCB layout?
The SMCJ24C-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 maintain TJ ≤ 150 °C during repetitive surges, designers must allocate sufficient copper area and avoid excessive trace length - undersized pads will elevate junction temperature and reduce surge endurance.
Does the SMCJ24C-E3/57T require derating at elevated ambient temperatures?
Yes, the SMCJ24C-E3/57T must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document Number 88394). At 85 °C ambient, its peak pulse power capability drops to approximately 70 % of the rated 1500 W - meaning IPPM reduces to ~27 A. System-level thermal analysis is essential when deploying SMCJ24C-E3/57T in enclosed enclosures or near heat-generating components.
SMCJ24C-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:
- -
- 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-E3/57T FAQ
1.How can I place an order for SMCJ24C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24C-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 SMCJ24C-E3/57T reliable?
The price and inventory of SMCJ24C-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 SMCJ24C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ24C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24C-E3/57T?
SMCJ24C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24C-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 SMCJ24C-E3/57T?
For technical support, including SMCJ24C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24C-E3/57T requirements.
6.How does Aetrix verify that SMCJ24C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ24C-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 SMCJ24C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ24C-E3/57T?
All SMCJ24C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24C-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 SMCJ24C-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ24C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ24C-E3/57T Tags
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