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Vishay General Semiconductor - Diodes Division SMCJ24CHE3/57T
- Part No.:
- SMCJ24CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ24CHE3/57T.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,563
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Product details
Overview
SMCJ24CHE3/57T 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 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (VBR at 1 mA), 38.9 V clamping voltage (VC) at 38.6 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ24CHE3/57T datasheet, SMCJ24CHE3/57T pinout, SMCJ24CHE3/57T application, or SMCJ24CHE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C junction temperature rating, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, conducting only when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and fast response (<1 ns), while low incremental surge resistance enables effective energy diversion during transients like ISO 7637-2 load dump or ESD events.
The SMCJ24CHE3/57T is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits thermal resistance of 15 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient), requiring appropriate PCB copper area for sustained power dissipation up to 6.5 W at 50 °C ambient.
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 at 1 mA - guaranteed breakdown threshold defining turn-on consistency |
| VC @ IPPM | 38.9 V at 38.6 A - clamped voltage seen by protected IC during 10/1000 µs surge |
| PPPM | 1500 W - peak transient power it can absorb without failure under standard waveform |
| IFSM | 200 A - surge current handling capability for 8.3 ms half-sine, critical for automotive load dump |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood environments |
| Leakage @ VWM | ≤1.0 µA - minimal standby current draw preserving low-power system integrity |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded UL 94 V-0 compound; cathode indicated by band on one end.
| 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., 24 V rail); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage performance across life cycle |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD201 Class 2 (HE3 suffix) |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against ISO 7637-2 pulse 5a (load dump) and pulse 1/2a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and chassis ground to clamp surges above 29.5 V. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤38.9 V during 1500 W transients, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O lines of PLC analog input modules exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected clamping device on signal line referenced to local ground, triggered within <1 ns. Use Value: Maintains signal integrity by suppressing >1 kV transients to sub-40 V levels without adding capacitance that would distort 10 kHz sensor bandwidth. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing -48 V DC power inputs in telecom base station line cards against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Reverse-biased unidirectional TVS (anode to -48 V, cathode to ground) absorbing negative-going spikes. Use Value: Withstands 200 A 8.3 ms surge and maintains ≤1 µA leakage at -48 V, avoiding false triggering in high-impedance monitoring circuits. | Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart home washing machine inverters from MOSFET switching noise and relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS on each motor phase control line, mounted directly at connector entry point. Use Value: Clamps 100 V transients to 38.9 V within nanoseconds, preventing false resets and ensuring EN 61000-4-4 compliance at 2 kV level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/52T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (43.5 V @ 9.8 A) | Suitable for space-constrained consumer devices with lower surge exposure | Select when board area is limited and peak surge energy does not exceed 400 W |
| 1.5KE24A | Through-hole TO-218 package, same VWM/VBR, but higher VC (38.7 V @ 38.9 A) and larger footprint | Used where manual assembly or legacy through-hole design prevails | Choose for prototyping or repair where SMT rework is impractical |
Compared with SMAJ24A-E3/52T and 1.5KE24A, the SMCJ24CHE3/57T delivers 3.75× higher peak power handling in an AEC-Q101-qualified SMT package, making it optimal for automotive and industrial systems demanding both reliability and compactness.
Availability
SMCJ24CHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog modules, telecom DC power supplies, and appliance motor controllers requiring stable component supply with full traceability and lifecycle support.
Supply support for SMCJ24CHE3/57T 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 automotive qualification.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101 compliance and robust clamping performance across extended temperature ranges.
FAQ
What is the clamping voltage of the SMCJ24CHE3/57T and how is it measured?
The SMCJ24CHE3/57T has a maximum clamping voltage (VC) of 38.9 V, measured at its peak pulse current (IPPM) of 38.6 A using a standardized 10/1000 µs double-exponential surge waveform. This value represents the upper voltage limit imposed on protected circuitry during worst-case transient events, confirmed per ANSI/IEEE C62.35 test conditions and verified on production lots.
Is the SMCJ24CHE3/57T suitable for automotive applications?
Yes, the SMCJ24CHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, 200 A 8.3 ms surge rating, and validation across temperature cycling, HTRB, and ESD tests make it appropriate for protecting ECUs, body control modules, and ADAS power supplies per ISO 7637-2 requirements.
How does the HE3 suffix differ from E3 in SMCJ24CHE3/57T?
The HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 indicates commercial-grade RoHS compliance only. The SMCJ24CHE3/57T meets automotive reliability standards including enhanced process controls, lot traceability, and stress testing beyond standard JEDEC requirements - critical for mission-critical vehicle systems.
What is the recommended PCB pad layout for optimal thermal performance of SMCJ24CHE3/57T?
Vishay specifies mounting the SMCJ24CHE3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and maintain thermal resistance at 15 °C/W (junction-to-lead). Reduced pad area degrades surge capability and risks thermal runaway during repetitive transients.
Does the SMCJ24CHE3/57T have polarity marking, and how is it identified?
Yes, the SMCJ24CHE3/57T is unidirectional and marked with a cathode band on the banded end of the DO-214AB package. During PCB layout, the banded end must connect to the line being protected (e.g., 24 V rail), while the anode connects to ground - reversing polarity prevents clamping and may cause catastrophic failure under overvoltage.
SMCJ24CHE3/57T 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ24CHE3/57T FAQ
1.How can I place an order for SMCJ24CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ24CHE3/57T 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 SMCJ24CHE3/57T reliable?
The price and inventory of SMCJ24CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ24CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ24CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ24CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ24CHE3/57T?
SMCJ24CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ24CHE3/57T 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 SMCJ24CHE3/57T?
For technical support, including SMCJ24CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ24CHE3/57T requirements.
6.How does Aetrix verify that SMCJ24CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ24CHE3/57T 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 SMCJ24CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ24CHE3/57T?
All SMCJ24CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ24CHE3/57T, 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 SMCJ24CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ24CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ24CHE3/57T Tags
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