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Vishay General Semiconductor - Diodes Division SMCJ22HE3/57T
- Part No.:
- SMCJ22HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ22HE3/57T.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,983
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Product details
Overview
SMCJ22HE3/57T from Vishay General Semiconductor is a surface-mount transient voltage suppressor (TVS) diode designed for bi-directional overvoltage protection in power and signal lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown range (VBR), 1500 W peak pulse power (PPPM), clamps to ≤35.5 V at 42.3 A, and is AEC-Q101 qualified for automotive use.
For engineers reviewing the SMCJ22HE3/57T datasheet, SMCJ22HE3/57T pinout, SMCJ22HE3/57T application, or SMCJ22HE3/57T equivalent, this device is selected for robust ESD and surge protection in automotive ECUs, industrial sensor interfaces, and DC power rails where high-energy transients must be suppressed without sacrificing response time or reliability.
Technical Context
The SMCJ22HE3/57T operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 22 V), while its DO-214AB (SMCJ) package supports automated placement and meets MSL level 1 reflow requirements.
Designed for 10/1000 µs waveform compliance, it delivers 42.3 A peak pulse current (IPPM) with 35.5 V clamping voltage (VC), achieving low incremental surge resistance for minimal let-through energy. Thermal resistance is specified at RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C junction temperature.
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 - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | ≤35.5 V - Clamping voltage at 42.3 A peak pulse current, limiting downstream voltage stress |
| PPPM | 1500 W - Peak pulse power handling capability under standardized 10/1000 µs surge waveform |
| ID @ VWM | ≤1.0 µA - Reverse leakage current at rated standoff voltage, critical for low-power sensor line integrity |
| TJ max | +150 °C - Maximum junction temperature, enabling use in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, bi-directional configuration with no polarity marking (no cathode band). Molded compound meets UL 94 V-0; matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as input/output for bidirectional surge suppression |
| Case (body) | Thermal and mechanical interface | DO-214AB body provides thermal path to PCB copper pads (recommended 8.0 mm × 8.0 mm per terminal) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validates suitability for automotive control units, ADAS sensors, and powertrain modules |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced failure |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes let-through voltage during surge events, protecting downstream ICs with tight VDD margins |
| 1500 W PPPM rating | Handles high-energy transients from inductive load switching (e.g., solenoids, motors) in industrial systems |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN and CAN signal lines in door modules and lighting controllers from load dump and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential bus lines to clamp ±30 kV ESD and 100 V load-dump transients. Use Value: Prevents communication errors and PHY damage by limiting bus voltage to ≤35.5 V during surges, maintaining ISO 11898-2 compliance. | Use Scenario: Safeguarding RS-485/CAN transceivers connected to factory-floor machinery with long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression element on data lines, positioned before transceiver inputs to absorb induced lightning surges. Use Value: Enables reliable operation in harsh electromagnetic environments by suppressing >1 kV fast transients without degrading signal integrity. |
| DC Power Input Stage (12 V/24 V) | Automotive Camera Sensor Interface |
Use Scenario: Input protection for infotainment head units and telematics gateways exposed to ISO 7637-2 Pulse 1, 2a, and 5a. IC Role / Device Role / Timing Role: First-line defense against reverse battery connection, jump-start spikes, and alternator load dump. Use Value: Withstands 1500 W pulses and clamps to 35.5 V, preventing damage to DC-DC converters and microcontrollers downstream. | Use Scenario: Protecting FPD-Link III or GMSL video lines between ADAS cameras and domain controllers. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS placed inline with high-speed serial video signals to suppress ESD without signal distortion. Use Value: Maintains signal fidelity up to 3 Gbps due to minimal parasitic capacitance and sub-nanosecond response, preserving image quality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/57T | Lower PPPM (400 W), smaller SMA package, unidirectional only | Not suitable for AC or floating lines; limited to lower-energy transients | Select when space-constrained and surge energy is <400 W; not drop-in for bi-directional use |
| SMCJ22CA-E3/57T | Identical electrical specs and DO-214AB package; CA suffix denotes bi-directional variant | No functional difference - HE3 indicates AEC-Q101 qualification, same as SMCJ22HE3/57T | Direct functional and mechanical alternative; verify qualification status per procurement requirement |
Compared with SMAJ22A-E3/57T and SMCJ22CA-E3/57T, the SMCJ22HE3/57T offers automotive-grade reliability (AEC-Q101) and 1500 W surge capacity in a proven DO-214AB footprint - making it optimal for high-energy, mission-critical protection where qualification and power handling are non-negotiable.
Availability
SMCJ22HE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial automation, and telecommunications infrastructure requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for SMCJ22HE3/57T 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, 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 automotive, industrial, and telecom systems demanding AEC-Q101 validation and robust surge immunity.
FAQ
What is the clamping voltage of the SMCJ22HE3/57T under maximum surge conditions?
The SMCJ22HE3/57T clamps to a maximum of 35.5 V at its rated peak pulse current of 42.3 A (10/1000 µs waveform). This value is guaranteed per Vishay's datasheet and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCJ22HE3/57T suitable for bi-directional signal line protection?
Yes, the SMCJ22HE3/57T is explicitly designed for bi-directional applications. Its symmetric breakdown and clamping behavior in both polarities - confirmed by identical VBR min/max and VC specifications for forward and reverse directions - makes it ideal for protecting AC-coupled interfaces like CAN, LIN, RS-485, and audio lines without polarity concerns.
Does the SMCJ22HE3/57T meet automotive qualification standards?
Yes, the SMCJ22HE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix. This certification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for under-hood and cabin automotive applications such as body control modules, ADAS sensors, and infotainment systems.
What is the thermal resistance and maximum operating temperature of the SMCJ22HE3/57T?
The SMCJ22HE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. Its maximum operating junction temperature is +150 °C, enabling reliable operation in high-temperature environments like engine compartments and industrial motor drives when mounted on recommended 8.0 mm × 8.0 mm copper pads.
How does the SMCJ22HE3/57T differ from the SMCJ22A-E3/57T?
The SMCJ22HE3/57T is AEC-Q101 qualified and RoHS-compliant (HE3 suffix), whereas SMCJ22A-E3/57T carries the commercial-grade E3 suffix only. Both share identical electrical specs and DO-214AB packaging, but SMCJ22HE3/57T undergoes additional automotive reliability testing - making it mandatory for automotive Tier 1 designs requiring certified components.
SMCJ22HE3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ22HE3/57T FAQ
1.How can I place an order for SMCJ22HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ22HE3/57T 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 SMCJ22HE3/57T reliable?
The price and inventory of SMCJ22HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ22HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ22HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ22HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ22HE3/57T?
SMCJ22HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ22HE3/57T 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 SMCJ22HE3/57T?
For technical support, including SMCJ22HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ22HE3/57T requirements.
6.How does Aetrix verify that SMCJ22HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ22HE3/57T 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 SMCJ22HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ22HE3/57T?
All SMCJ22HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ22HE3/57T, 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 SMCJ22HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ22HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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