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Vishay General Semiconductor - Diodes Division SMCJ22CAHE3_A/H
- Part No.:
- SMCJ22CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22CAHE3_A/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,262
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Product details
Overview
SMCJ22CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 μs waveform, 35.5 V maximum clamping voltage at 42.3 A peak pulse current, and 22 V stand-off voltage - deployed for ESD and surge protection on automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SMCJ22CAHE3_A/H datasheet, SMCJ22CAHE3_A/H pinout, SMCJ22CAHE3_A/H application, or SMCJ22CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W PPPM rating, low 0.096 %/°C VBR temperature coefficient, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive transient stress.
The device complies with MSL level 1 per J-STD-020, supports peak reflow temperatures up to 260 °C, and delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature range - critical for under-hood automotive and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 22 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| Breakdown Voltage (VBR) | 24.4 V min / 26.9 V max at 1 mA - precise voltage threshold where avalanche conduction initiates reliably |
| Clamping Voltage (VC) | 35.5 V at 42.3 A IPPM - limits transient voltage seen by protected ICs to safe levels during surge events |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 μs) - energy-handling capacity sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| Junction Temperature Range | -55 °C to +150 °C - enables deployment in engine control units, motor drives, and outdoor telecom equipment |
| Temperature Coefficient of VBR | 0.096 %/°C - ensures predictable voltage drift over temperature, supporting stable protection margins in wide-temp systems |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of symmetrical avalanche junction; conducts during positive or negative transients relative to cathode |
| Cathode | Transient current entry (forward bias) | Second terminal of symmetrical junction; completes bidirectional conduction path with anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485, CAN), and ungrounded sensor outputs without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive applications including powertrain, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse rating | Withstands high-energy transients from inductive switching (e.g., solenoid drivers) and lightning-induced surges in industrial fieldbus nodes |
| Low thermal resistance (RθJL = 15 °C/W) | Supports rapid heat dissipation into PCB copper pads, maintaining junction temperature within safe limits during repeated surge events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles without baking, reducing manufacturing complexity and cost |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector interface to shunt transients before reaching precision ADC front-end. Use Value: Maintains signal integrity with ≤35.5 V clamping during 10/1000 μs surges up to 42.3 A, preventing latch-up or damage to 3.3 V/5 V sensor signal conditioning ICs. | Use Scenario: Safeguarding digital input/output pins of PLC modules connected to factory floor actuators and field devices subject to inductive kickback. IC Role / Device Role / Timing Role: Standoff-clamped transient suppressor mounted adjacent to terminal block to absorb energy from relay coil de-energization and motor contactor switching. Use Value: Limits voltage excursions to ≤35.5 V during 1500 W surges, ensuring compatibility with 24 V DC industrial logic levels and extending controller MTBF. |
| Telecom Interface Protection | Consumer Device ESD Hardening |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from induced surges caused by nearby lightning strikes or power cross events. IC Role / Device Role / Timing Role: Differential-line TVS pair (one per line) providing symmetrical clamping on A/B bus lines referenced to common ground. Use Value: Delivers matched bidirectional response with <0.1 %/°C VBR drift, preserving signal common-mode range while suppressing >1 kV transients per IEC 61000-4-5. | Use Scenario: Adding robustness to USB-C port data lines and side-button circuits in portable medical monitors against human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor integrated into compact PCB layout near connector to minimize trace inductance and improve response speed. Use Value: Achieves sub-nanosecond response with 35.5 V clamping at 42.3 A, meeting IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CAHE3_A/H | Lower PPPM (400 W), same VWM/VBR/VC, SMA package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer electronics but not for high-energy industrial surges | Select when board area is critical and surge energy remains ≤400 W |
| SMCJ24CAHE3_A/H | Higher VWM (24 V), VBR (26.7–29.5 V), VC (38.9 V), identical PPPM and package | Better margin for 24 V nominal systems; slightly higher clamping may affect sensitive 3.3 V receivers | Choose for 24 V rail protection where tighter VWM tolerance is required |
Compared with SMAJ22CAHE3_A/H and SMCJ24CAHE3_A/H, the SMCJ22CAHE3_A/H provides optimal balance of 22 V stand-off voltage, 1500 W surge handling, and AEC-Q101 qualification - making it the preferred choice for automotive and industrial applications demanding both high energy absorption and automotive-grade reliability.
Availability
SMCJ22CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom RS-485 transceivers, and consumer medical device ESD protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ22CAHE3_A/H 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 high-reliability, high-efficiency, and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform engineered specifically for robust transient suppression in harsh electromagnetic environments - targeting automotive, industrial automation, and infrastructure communication systems.
FAQ
What is the clamping voltage of the SMCJ22CAHE3_A/H under maximum rated surge current?
The SMCJ22CAHE3_A/H has a maximum clamping voltage (VC) of 35.5 V at 42.3 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured under specified test conditions with 0.31" × 0.31" copper pads per terminal and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events. The SMCJ22CAHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the SMCJ22CAHE3_A/H suitable for automotive applications?
Yes, the SMCJ22CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HE3. It meets stress test requirements including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). The SMCJ22CAHE3_A/H is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where reliability under thermal and electrical stress is mandatory.
How does the bidirectional configuration of the SMCJ22CAHE3_A/H affect its circuit implementation?
The bidirectional configuration of the SMCJ22CAHE3_A/H eliminates polarity marking and allows placement across any two points needing symmetrical overvoltage protection - such as differential signal pairs (RS-485, CAN), AC-coupled lines, or ungrounded sensor outputs. Unlike unidirectional TVS diodes, the SMCJ22CAHE3_A/H conducts identically in both directions, simplifying layout and avoiding orientation errors during automated assembly. No external biasing or direction-aware routing is required.
What is the thermal resistance from junction to lead (RθJL) for the SMCJ22CAHE3_A/H?
The SMCJ22CAHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as specified in the Vishay datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper through the SMC (DO-214AB) package leads, supporting sustained operation during repetitive surge events. When mounted on recommended 8.0 mm × 8.0 mm copper pads, the SMCJ22CAHE3_A/H achieves reliable thermal performance even at elevated ambient temperatures.
Does the SMCJ22CAHE3_A/H meet RoHS and halogen-free requirements?
The SMCJ22CAHE3_A/H is RoHS-compliant and AEC-Q101 qualified, with "HE3" denoting the automotive-grade, RoHS-compliant variant. It is not halogen-free - that designation applies to HM3-suffixed parts. The SMCJ22CAHE3_A/H uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and its molding compound meets UL 94 V-0 flammability rating. Full compliance documentation is available via Vishay's material declarations portal.
SMCJ22CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- 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)
SMCJ22CAHE3_A/H FAQ
1.How can I place an order for SMCJ22CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22CAHE3_A/H 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 SMCJ22CAHE3_A/H reliable?
The price and inventory of SMCJ22CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ22CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22CAHE3_A/H?
SMCJ22CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22CAHE3_A/H 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 SMCJ22CAHE3_A/H?
For technical support, including SMCJ22CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ22CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ22CAHE3_A/H 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 SMCJ22CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ22CAHE3_A/H?
All SMCJ22CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22CAHE3_A/H, 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 SMCJ22CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ22CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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