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Vishay General Semiconductor - Diodes Division SMCJ22C-E3/9AT
- Part No.:
- SMCJ22C-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22C-E3/9AT.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,056
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Product details
Overview
SMCJ22C-E3/9AT 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 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), clamping voltage of 35.5 V at 42.3 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCJ22C-E3/9AT datasheet, SMCJ22C-E3/9AT pinout, SMCJ22C-E3/9AT application, or SMCJ22C-E3/9AT equivalent, key selection criteria include bi-directional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on PCBs requiring IEC 61000-4-2/4-4/4-5 compliant transient suppression.
Technical Context
The SMCJ22C-E3/9AT operates as a silicon avalanche diode optimized for fast-response transient suppression in both polarities. Its glass-passivated junction ensures stable breakdown characteristics, while its low clamping ratio (VC/VBR ≈ 1.42) minimizes let-through voltage during ESD or lightning-induced surges.
Designed for surface-mount implementation on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power handling with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - Confirmed avalanche breakdown range ensuring predictable turn-on |
| VC @ IPPM | 35.5 V at 42.3 A - Clamped voltage during full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs waveform) - Peak surge energy absorption capacity per IEC 61000-4-5 |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables under-hood automotive deployment without derating |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional device with no polarity marking (unlike uni-directional variants which feature cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Both terminals function identically; no polarity dependency-ideal for AC or differential line protection |
| Case (cathode side in uni-dir) | Thermal path & mechanical anchor | DO-214AB body provides low-inductance path and 15 °C/W junction-to-lead thermal resistance |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W surge rating | Withstands 10/1000 µs transients up to 42.3 A-meets IEC 61000-4-5 Level 4 immunity requirements |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without baking or special handling |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and life cycles |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, infotainment, and ADAS sensor interfaces |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN/CAN physical layer inputs in vehicle door modules against load dump and ESD events. IC Role / Device Role / Timing Role: Primary TVS clamp placed directly at connector entry point to shunt transients before reaching transceiver IC. Use Value: Limits clamped voltage to 35.5 V, well below typical CAN transceiver absolute max rating of 40 V, preventing latch-up or damage. | Use Scenario: Safeguarding RS-485/RS-422 transceivers in factory automation PLC I/O modules exposed to motor switching noise. IC Role / Device Role / Timing Role: Bi-directional TVS on differential pair (A/B lines) to absorb common-mode surges without disrupting DC bias. Use Value: Symmetrical clamping ensures equal protection on both lines, preserving signal integrity during 1500 W surge events. |
| Consumer USB 2.0 Data Line Protection | Telecom DSL Line Card Surge Suppression |
Use Scenario: ESD protection for USB D+/D− lines in portable media players subjected to ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to USB connector to minimize signal distortion. Use Value: Sub-1 µA leakage at 22 V prevents pull-up resistor loading; fast response (<1 ns) captures ESD before IC damage occurs. | Use Scenario: Primary surge protection stage on POTS/DSL line cards interfacing with outside plant wiring. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges entering via tip/ring pairs. Use Value: 1500 W rating handles 10/1000 µs surges per ITU-T K.20/K.21; DO-214AB footprint supports high-current PCB trace routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC22C | Lower PPPM (600 W), same VWM (22 V), smaller DO-214AC (SMA) package | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤ Level 2 |
| 1.5KE22CA | Higher VBR (24.4–27.1 V), same bi-directionality, axial-leaded DO-15 package | Not SMT-compatible; requires through-hole assembly and larger PCB real estate | Choose only for legacy through-hole designs or prototyping where reflow is unavailable |
Compared with SAC22C and 1.5KE22CA, the SMCJ22C-E3/9AT uniquely combines 1500 W surge capability, AEC-Q101 qualification, and DO-214AB SMT packaging-making it the preferred choice for production automotive and industrial PCBs requiring high-reliability, high-power transient suppression in automated assembly.
Availability
SMCJ22C-E3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial communication interfaces, and telecom line card designs requiring stable component supply, RoHS-compliant manufacturing, and AEC-Q101 validated reliability.
Supply support for SMCJ22C-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, surface-mount transient suppression in harsh environments-including automotive, industrial, and telecommunications infrastructure.
FAQ
What is the clamping voltage of SMCJ22C-E3/9AT at its rated peak pulse current?
The SMCJ22C-E3/9AT has a maximum clamping voltage (VC) of 35.5 V at its peak pulse current (IPPM) of 42.3 A, measured under the standardized 10/1000 µs waveform. This value is critical for ensuring downstream ICs remain within their absolute maximum voltage ratings during surge events. The SMCJ22C-E3/9AT achieves this clamping performance while maintaining low dynamic impedance, making it suitable for protecting sensitive transceivers and microcontrollers.
Is SMCJ22C-E3/9AT suitable for automotive applications?
Yes, the SMCJ22C-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its operating junction temperature range of –55 °C to +150 °C, MSL Level 1 moisture sensitivity rating, and glass-passivated junction ensure robustness against thermal cycling, humidity, and mechanical stress. The SMCJ22C-E3/9AT is commonly deployed in automotive sensor interfaces, body control modules, and infotainment systems requiring certified transient protection.
How does the bi-directional design of SMCJ22C-E3/9AT affect its circuit implementation?
The bi-directional architecture of SMCJ22C-E3/9AT means both terminals are electrically symmetrical-no cathode marking is present, and it functions identically regardless of voltage polarity. This eliminates orientation errors during SMT placement and simplifies layout for AC-coupled or floating lines such as CAN, RS-485, or audio paths. Unlike uni-directional TVS diodes, the SMCJ22C-E3/9AT does not require careful attention to anode/cathode alignment, reducing assembly risk and improving design flexibility.
What is the maximum reverse leakage current of SMCJ22C-E3/9AT at its stand-off voltage?
The SMCJ22C-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 22 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss and avoids unintended loading of high-impedance signal sources-critical in precision analog sensing, battery-powered IoT nodes, and high-speed data lines. The SMCJ22C-E3/9AT maintains this specification across its full operating temperature range, supporting stable performance in thermally variable environments.
Does SMCJ22C-E3/9AT require special PCB layout considerations?
Yes-the SMCJ22C-E3/9AT should be mounted on minimum recommended copper pad areas of 0.31″ × 0.31″ (8.0 mm × 8.0 mm) per terminal to achieve its rated 1500 W peak pulse power and thermal performance. Short, direct traces to protected lines minimize inductance, while avoiding vias or narrow necks in the current path preserves surge-handling capability. The SMCJ22C-E3/9AT's DO-214AB package also benefits from symmetric thermal relief to ensure even solder joint formation during reflow.
SMCJ22C-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ22C-E3/9AT FAQ
1.How can I place an order for SMCJ22C-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22C-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 SMCJ22C-E3/9AT reliable?
The price and inventory of SMCJ22C-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 SMCJ22C-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ22C-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22C-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22C-E3/9AT?
SMCJ22C-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22C-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 SMCJ22C-E3/9AT?
For technical support, including SMCJ22C-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22C-E3/9AT requirements.
6.How does Aetrix verify that SMCJ22C-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ22C-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 SMCJ22C-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ22C-E3/9AT?
All SMCJ22C-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22C-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 SMCJ22C-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ22C-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ22C-E3/9AT Tags
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