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Vishay General Semiconductor - Diodes Division SMCJ22CHE3/57T
- Part No.:
- SMCJ22CHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22CHE3/57T.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,998
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Product details
Overview
SMCJ22CHE3/57T from Vishay General Semiconductor is a surface-mount, AEC-Q101-qualified, bi-directional transient voltage suppressor (TVS) in DO-214AB (SMCJ) package. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 42.3 A peak pulse current (IPPM), and clamps transients to ≤35.5 V. It protects automotive sensor signal lines and power rails against ESD, load dump, and inductive switching surges.
For engineers reviewing the SMCJ22CHE3/57T datasheet, SMCJ22CHE3/57T pinout, SMCJ22CHE3/57T application, or SMCJ22CHE3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-214AB mechanical data, clamping performance under standardized surge waveforms, and direct alternatives for automotive-grade TVS selection.
Technical Context
The SMCJ22CHE3/57T is a bi-directional silicon avalanche diode designed for unidirectional or bidirectional transient suppression without polarity marking. Its glass-passivated junction ensures stable VBR and low leakage (<1 µA at VWM), while its low incremental surge resistance enables consistent clamping across repetitive 10/1000 µs pulses.
Thermal design is supported by RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance (HE3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V automotive systems. |
| VBR min/max | 24.4 V / 26.9 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | ≤35.5 V at 42.3 A - Clamping voltage under 10/1000 µs surge; guarantees downstream ICs see <36 V during worst-case transients. |
| PPPM | 1500 W - Peak pulse power handling per IEEE C62.35; supports high-energy surges like ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at rated stand-off; prevents battery drain in always-on automotive modules. |
| TJ max | +150 °C - Junction temperature limit compatible with under-hood automotive environments and AEC-Q101 stress testing. |
| Package | DO-214AB (SMCJ) - Standardized surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint; optimized for automated placement and reflow. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads, matte tin-plated terminals solderable per J-STD-002 and JESD22-B102. Bi-directional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche junction | Both terminals function identically; symmetric clamping in either direction eliminates orientation concerns during PCB layout. |
| Case (body) | Non-electrical mechanical interface | No internal connection; serves only as thermal mass and mounting structure; requires adequate copper pour for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias HAST, and mechanical shock - required for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Stable VBR tolerance and low leakage over lifetime; resists degradation from moisture ingress and thermal stress in harsh environments. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60% RH; supports standard SMT assembly without dry-pack or baking requirements. |
| Low incremental surge resistance | Enables tight VC consistency across production lots and pulse repetitions - critical for repeatable protection in safety-critical systems. |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability - satisfies automotive OEM material compliance mandates. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to ISO 7637-2 pulses and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector entry point to clamp fast-rising transients before they reach signal conditioning circuitry. Use Value: Limits voltage seen by protected ICs to ≤35.5 V during 10/1000 µs surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers subjected to inductive kickback from solenoids and relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at terminal block to absorb >1 kV, 500 A transients generated by 24 V DC coil de-energization. Use Value: Withstands 1500 W peak pulse power and clamps within 1 ns, ensuring microcontroller GPIOs remain within absolute maximum ratings during field wiring faults. |
| Telecom Power Rail Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Secondary-side DC rail protection in telecom power supplies where EN 61000-4-5 (1.2/50 µs + 8/20 µs combo wave) compliance is required. IC Role / Device Role / Timing Role: Parallel-connected TVS on +24 V or +48 V distribution lines to shunt surge energy away from DC-DC converters and PMICs. Use Value: 22 V VWM provides sufficient margin above nominal rail while 35.5 V VC ensures downstream regulators operate within safe input limits during surge events. |
Use Scenario: Input-stage transient suppression in USB-C PD adapters and wall chargers facing line-to-line surges per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Primary-side TVS between AC input rectifier output and bulk capacitor to prevent overvoltage propagation into SMPS controller ICs. Use Value: 1500 W PPPM rating handles repeated 10/1000 µs surges without degradation; DO-214AB package allows compact placement near AC inlet connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), uni-directional only, same VWM/VBR range. | Not suitable for bi-directional signal lines or AC-coupled interfaces; limited to lower-energy transients. | Select when space-constrained layouts require smaller footprint and surge energy is ≤400 W. |
| SMCJ22AHE3/57T | Uni-directional version with cathode band marking; identical VWM, VBR, VC, and PPPM; same DO-214AB package. | Requires correct polarity orientation; unsuitable for differential or AC signals without external rectification. | Choose only when protecting DC rails with known polarity and board layout accommodates orientation marking. |
Compared with SMCJ22CHE3/57T, SMAJ22AHE3/A offers reduced surge capacity in a smaller package, while SMCJ22AHE3/57T provides identical power handling but demands strict polarity alignment - making the bi-directional SMCJ22CHE3/57T optimal for robust, orientation-insensitive protection in automotive and industrial signal paths.
Availability
SMCJ22CHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and consumer adapter designs requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for SMCJ22CHE3/57T 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 automotive-grade qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What does the "HE3" suffix indicate in SMCJ22CHE3/57T?
The HE3 suffix denotes that the SMCJ22CHE3/57T is RoHS-compliant and AEC-Q101 qualified, with matte tin-plated leads meeting JESD201 Class 2 whisker resistance. It also confirms compliance with UL 94 V-0 flammability and J-STD-020 MSL Level 1 - all critical for automotive under-hood deployment. This distinguishes it from commercial-grade E3 variants.
Is SMCJ22CHE3/57T bi-directional or uni-directional?
SMCJ22CHE3/57T is explicitly bi-directional, as indicated by the "C" in the part number (per Vishay's naming convention: "CA" = bi-directional, "A" = uni-directional). It has no polarity marking and provides symmetrical clamping in both directions - essential for protecting AC-coupled or differential signal lines without orientation constraints.
What is the maximum clamping voltage of SMCJ22CHE3/57T under surge conditions?
The SMCJ22CHE3/57T clamps to a maximum of 35.5 V when subjected to its rated 10/1000 µs peak pulse current of 42.3 A. This value is guaranteed across temperature and production lot, and is measured per ANSI/IEEE C62.35 standards - ensuring predictable overvoltage protection for downstream 3.3 V or 5 V ICs.
Can SMCJ22CHE3/57T be used in place of SMCJ22AHE3/57T?
SMCJ22CHE3/57T can replace SMCJ22AHE3/57T only if bi-directional clamping is acceptable and required - e.g., on differential buses or AC signal paths. However, it cannot substitute in uni-directional DC rail applications where polarity-specific conduction is needed, since the bi-directional version lacks cathode marking and conducts equally in both directions.
What thermal pad layout is recommended for SMCJ22CHE3/57T to achieve rated power dissipation?
Vishay specifies that the SMCJ22CHE3/57T achieves its rated 1500 W PPPM and 6.5 W steady-state PD when mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Smaller pads increase thermal resistance and reduce surge capability - especially critical in automotive applications where ambient temperatures exceed 85 °C.
SMCJ22CHE3/57T 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 39.4V
- Current - Peak Pulse (10/1000µs):
- 38.1A
- 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)
SMCJ22CHE3/57T FAQ
1.How can I place an order for SMCJ22CHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22CHE3/57T 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 SMCJ22CHE3/57T reliable?
The price and inventory of SMCJ22CHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22CHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ22CHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22CHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22CHE3/57T?
SMCJ22CHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22CHE3/57T 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 SMCJ22CHE3/57T?
For technical support, including SMCJ22CHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22CHE3/57T requirements.
6.How does Aetrix verify that SMCJ22CHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ22CHE3/57T 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 SMCJ22CHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ22CHE3/57T?
All SMCJ22CHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22CHE3/57T, 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 SMCJ22CHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ22CHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ22CHE3/57T Tags
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