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Vishay General Semiconductor - Diodes Division SMCJ22CHE3/9AT
- Part No.:
- SMCJ22CHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22CHE3/9AT.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
SMCJ22CHE3/9AT from Vishay General Semiconductor is a surface-mount, AEC-Q101-qualified, bi-directional transient voltage suppressor (TVS) in DO-214AB (SMCJ) package. It features 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), clamping voltage of 35.5 V at 42.3 A, and operates from –55 °C to +150 °C - designed for automotive electronics surge protection on power rails and signal lines.
For engineers reviewing the SMCJ22CHE3/9AT datasheet, SMCJ22CHE3/9AT pinout, SMCJ22CHE3/9AT application, or SMCJ22CHE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, DO-214AB mechanical data, clamping performance under 10/1000 µs transients, and direct alternatives for automotive-grade circuit protection design.
Technical Context
The SMCJ22CHE3/9AT is a bi-directional TVS diode optimized for high-energy transient suppression in automotive and industrial systems. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping across temperature. It meets MSL Level 1 per J-STD-020 with 260 °C reflow peak and supports automated SMT placement.
Designed for bidirectional operation, it provides symmetrical clamping in both polarities without polarity marking. The device sustains 1500 W peak pulse power (10/1000 µs waveform) at 25 °C, derating linearly above TA = 25 °C per Fig. 2, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - guaranteed breakdown threshold range for reliable turn-on |
| VC @ IPPM | 35.5 V at 42.3 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient energy handling capacity under standardized waveform |
| TJ range | –55 °C to +150 °C - qualified for under-hood automotive environments |
| Qualification | AEC-Q101 - validated for automotive reliability including temperature cycling, HTRB, and ESD |
| Package | DO-214AB (SMCJ) - industry-standard SMT outline with 8.0 mm × 8.0 mm copper pad requirement |
Pinout & Package
DO-214AB (SMCJ) package: surface-mount, molded plastic case with J-bend leads; no polarity marking for bi-directional configuration; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional current path | Identical clamping behavior in either polarity; no cathode band; symmetric terminal function |
| Lead 1 / Lead 2 | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no functional distinction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including HTOL, temperature cycling, and ESD robustness |
| Glass passivated junction | Ensures stable VBR over life and immunity to moisture-induced parameter drift |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure to protected ICs during 10/1000 µs transients |
| 1500 W PPPM with 42.3 A IPPM | Handles ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surges in 12 V systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary shunt clamp absorbing >100 A surge currents while holding rail voltage below 36 V. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers during engine cranking or alternator regulation faults. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Fast-response parallel suppressor placed at connector entry point before signal conditioning stage. Use Value: Limits transient-induced offset errors and ADC saturation, maintaining measurement integrity under IEC 61000-4-4 EFT events. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 24–48 V DC input of base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense clamping common-mode transients on primary-side bus before DC/DC conversion. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements without adding bulkier MOV-based stages. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., washing machine control boards). IC Role / Device Role / Timing Role: Localized TVS across motor terminals and H-bridge outputs to quench inductive kickback. Use Value: Eliminates MOSFET avalanche stress and reduces EMI radiated from motor cables during PWM switching. |
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 DO-214AC (SMA) package, unidirectional only | Not suitable for bidirectional AC-coupled or floating signal lines; limited to DC rail clamping | Select when space-constrained and only unidirectional protection is required with lower surge energy. |
| SMCJ22CAHE3/9AT | Identical specifications and packaging; CA suffix explicitly denotes bi-directional version | No functional difference - SMCJ22CHE3/9AT and SMCJ22CAHE3/9AT are same-device part numbers per Vishay ordering matrix | Confirm manufacturer's latest cross-reference; both are valid AEC-Q101 bi-directional variants of same die. |
Compared with SMAJ22AHE3/A, the SMCJ22CHE3/9AT delivers 3.75× higher surge power handling and bi-directional symmetry, making it suitable for automotive CAN/LIN buses and AC-coupled sensors; versus SMCJ22CAHE3/9AT, it is a documented alternate marking for identical functionality and qualification.
Availability
SMCJ22CHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drives requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMCJ22CHE3/9AT 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 automotive-grade qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, surface-mount transient suppression in harsh environments where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What does the "HE3" suffix indicate in SMCJ22CHE3/9AT?
The "HE3" suffix in SMCJ22CHE3/9AT denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It confirms the device meets automotive reliability standards and uses matte tin-plated leads suitable for lead-free reflow up to 260 °C. This distinguishes it from commercial-grade "E3" variants lacking AEC-Q101 validation.
Is SMCJ22CHE3/9AT bi-directional or uni-directional?
SMCJ22CHE3/9AT is a bi-directional transient voltage suppressor. Its datasheet specifies symmetrical electrical characteristics in both polarities, with no cathode band marking and identical VBR, VC, and IPPM values regardless of voltage polarity - confirmed by the "CA"-equivalent designation and absence of polarity indicators in the DO-214AB package.
What is the clamping voltage of SMCJ22CHE3/9AT at its rated surge current?
The clamping voltage (VC) of SMCJ22CHE3/9AT is 35.5 V measured at its peak pulse current (IPPM) of 42.3 A under the standard 10/1000 µs waveform. This value is specified in the Vishay datasheet Document Number 88394, Table "ELECTRICAL CHARACTERISTICS", row for SMCJ22A, and applies directly to the SMCJ22CHE3/9AT variant.
Does SMCJ22CHE3/9AT require a heatsink for 1500 W surge handling?
No, SMCJ22CHE3/9AT does not require an external heatsink for single-event 1500 W surge handling. Its 10/1000 µs pulse duration is too short for significant thermal accumulation; the device relies on junction-to-lead (RθJL = 15 °C/W) and PCB copper pad conduction. Continuous power dissipation is limited to 6.5 W at TA = 50 °C, well below surge levels.
How does SMCJ22CHE3/9AT compare to SMCJ22AHE3/9AT in terms of polarity?
SMCJ22CHE3/9AT and SMCJ22AHE3/9AT differ fundamentally in polarity: SMCJ22CHE3/9AT is bi-directional (no polarity marking, symmetrical clamping), while SMCJ22AHE3/9AT is uni-directional (cathode band marked, conducts only in reverse bias). Their VWM, VBR, and PPPM ratings are otherwise identical, but substitution requires verifying circuit topology - e.g., SMCJ22CHE3/9AT is mandatory for AC-coupled or floating lines.
SMCJ22CHE3/9AT 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):
- 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)
SMCJ22CHE3/9AT FAQ
1.How can I place an order for SMCJ22CHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22CHE3/9AT 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 SMCJ22CHE3/9AT reliable?
The price and inventory of SMCJ22CHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22CHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ22CHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22CHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22CHE3/9AT?
SMCJ22CHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22CHE3/9AT 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 SMCJ22CHE3/9AT?
For technical support, including SMCJ22CHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22CHE3/9AT requirements.
6.How does Aetrix verify that SMCJ22CHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ22CHE3/9AT 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 SMCJ22CHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ22CHE3/9AT?
All SMCJ22CHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22CHE3/9AT, 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 SMCJ22CHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ22CHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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