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Vishay General Semiconductor - Diodes Division SMCG22CAHE3/57T
- Part No.:
- SMCG22CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG22CAHE3/57T.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,010
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Product details
Overview
SMCG22CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA test current, 1500 W peak pulse power (10/1000 µs), clamping voltage of 35.5 V at 42.3 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG22CAHE3/57T datasheet, SMCG22CAHE3/57T pinout, SMCG22CAHE3/57T application, or SMCG22CAHE3/57T equivalent, this device serves as a high-energy, low-clamping bidirectional TVS for protecting CAN bus lines, automotive sensor interfaces, and industrial I/O ports against ESD, lightning-induced surges, and inductive switching transients.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions - confirmed by specification notes stating "Electrical characteristics apply in both directions" and "For bidirectional devices use CA suffix". Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the DO-215AB package supports automated placement and meets MSL level 1 (260 °C reflow peak).
The device delivers 1500 W peak pulse power handling per 10/1000 µs waveform under standard mounting conditions (8.0 mm × 8.0 mm copper pads), with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling reliable operation up to TJ = +150 °C in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - Confirmed bidirectional breakdown range; ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 35.5 V at 42.3 A - Clamping voltage under full 1500 W surge; limits protected circuit stress to safe levels during worst-case transients. |
| PPPM | 1500 W (10/1000 µs) - High-energy surge absorption capacity suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 compliance. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance interfaces. |
| TJ max. | +150 °C - Extended junction temperature rating enables deployment in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, body electronics, and ADAS sensor protection. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | No functional polarity; either terminal serves as anode or cathode depending on transient polarity - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware routing in differential or AC-coupled signal paths. |
| AEC-Q101 qualification | Validated for automotive temperature cycling, mechanical shock, and humidity testing - supports Tier-1 supply chain requirements. |
| Glass passivated junction | Stable, repeatable breakdown with low parameter drift over time and temperature - critical for long-life industrial deployments. |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak - enables drop-in integration into high-volume automated assembly lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV) - improves protection margin for sub-5 V logic and analog sensors. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs against load dump, jump-start spikes, and ESD events per ISO 16750-2 and ISO 10605. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching CAN transceiver. Use Value: Clamps transients to ≤35.5 V while sustaining 1500 W pulses - maintains CAN signal integrity and prevents transceiver latch-up or permanent damage. |
Use Scenario: Safeguarding 4–20 mA current loop or RS-485 inputs in PLC modules exposed to field wiring surges and lightning-induced ground differentials. IC Role / Device Role / Timing Role: Primary overvoltage clamp across differential input terminals, coordinated with series current-limiting resistors. Use Value: Sub-1 µA leakage at 22 V VWM avoids measurement error in precision analog circuits; 35.5 V clamping protects downstream ADCs and isolators. |
| Automotive Occupancy Sensor Protection | Consumer Appliance Motor Driver Protection |
|
Use Scenario: Shielding capacitive or ultrasonic occupancy sensors in automotive cabin monitoring systems from ESD discharge during human interaction. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to sensor IC pins to absorb <1 ns ESD events before propagation into signal conditioning circuitry. Use Value: Fast response time and low clamping voltage preserve sensor signal fidelity and prevent false triggers or calibration drift. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders) where microcontroller I/O drives H-bridge gate drivers. IC Role / Device Role / Timing Role: Bidirectional clamp across motor terminals or driver supply rails to divert flyback energy away from MCU GPIO and power regulators. Use Value: 1500 W surge rating handles repetitive commutation spikes; AEC-Q101 qualification ensures reliability in thermally demanding appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA-E3/57T | Same VWM (22 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (41.0 V at 9.7 A); SMA (DO-214AC) package with larger footprint and higher RθJA (110 °C/W). | Limited to lower-energy transients (IEC 61000-4-2 Level 3 only); unsuitable for ISO 7637-2 Pulse 5a or high-current inductive loads. | Select when cost sensitivity outweighs surge energy requirements and board space permits larger package. |
| SMCJ22CAHE3/57T | Same VWM (22 V), bidirectional, and DO-214AB package; identical 1500 W PPPM but higher VC (38.9 V at 38.6 A); not AEC-Q101 qualified (only industrial grade). | Acceptable for industrial automation but lacks automotive qualification documentation and extended temperature validation. | Choose for non-automotive applications requiring same surge rating but lower procurement cost and no AEC-Q101 traceability requirement. |
Compared with SMAJ22CA-E3/57T and SMCJ22CAHE3/57T, the SMCG22CAHE3/57T uniquely combines AEC-Q101 qualification, DO-215AB's compact gull-wing footprint, and 35.5 V clamping - delivering superior protection margin and automotive compliance in space-constrained designs.
Availability
SMCG22CAHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, consumer appliance motor controls, and sensor interface protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCG22CAHE3/57T 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 SMCG series was engineered specifically for high-energy, space-constrained transient suppression in automotive and industrial environments - prioritizing low clamping, AEC-Q101 compliance, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMCG22CAHE3/57T under maximum surge conditions?
The SMCG22CAHE3/57T has a maximum clamping voltage (VC) of 35.5 V at 42.3 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events. The low VC ensures downstream components like CAN transceivers or analog front-ends remain within safe operating limits.
Is SMCG22CAHE3/57T suitable for automotive applications?
Yes, SMCG22CAHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and cabin applications. Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to +150 °C - meets stringent automotive reliability standards. The HE3 suffix confirms AEC-Q101 qualification, making SMCG22CAHE3/57T appropriate for ECUs, ADAS sensors, and body control modules.
How does the bidirectional design of SMCG22CAHE3/57T affect PCB layout?
The bidirectional nature of SMCG22CAHE3/57T eliminates polarity constraints: no cathode band marking is present, and either terminal functions identically regardless of transient direction. This allows symmetrical placement across differential lines (e.g., CAN_H/CAN_L) without orientation checks, reducing assembly errors and simplifying layout for AC-coupled or floating interfaces. The DO-215AB gull-wing leads further support fine-pitch automated placement.
What is the maximum reverse leakage current for SMCG22CAHE3/57T at its stand-off voltage?
At its 22 V stand-off voltage (VWM), the SMCG22CAHE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and avoids loading effects in precision analog circuits - a key advantage over higher-leakage alternatives that may introduce measurement offset or power loss.
Does SMCG22CAHE3/57T require heatsinking in typical applications?
In most applications, SMCG22CAHE3/57T does not require external heatsinking due to its low duty-cycle transient nature and efficient thermal path via gull-wing leads (RθJL = 15 °C/W). However, for repetitive surge conditions or ambient temperatures exceeding 85 °C, PCB copper pad area should follow Vishay's recommended 8.0 mm × 8.0 mm per terminal to maintain junction temperature below +150 °C. Thermal simulation is advised for high-frequency surge scenarios.
SMCG22CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- 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 (SMCG)
SMCG22CAHE3/57T FAQ
1.How can I place an order for SMCG22CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG22CAHE3/57T 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 SMCG22CAHE3/57T reliable?
The price and inventory of SMCG22CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG22CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG22CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG22CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG22CAHE3/57T?
SMCG22CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG22CAHE3/57T 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 SMCG22CAHE3/57T?
For technical support, including SMCG22CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG22CAHE3/57T requirements.
6.How does Aetrix verify that SMCG22CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG22CAHE3/57T 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 SMCG22CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG22CAHE3/57T?
All SMCG22CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG22CAHE3/57T, 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 SMCG22CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG22CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG22CAHE3/57T Tags
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