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Vishay General Semiconductor - Diodes Division SMCG22A-M3/57T
- Part No.:
- SMCG22A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG22A-M3/57T.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,315
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Product details
Overview
SMCG22A-M3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) 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, 1500 W peak pulse power (10/1000 µs), clamping voltage of 35.5 V at 42.3 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG22A-M3/57T datasheet, SMCG22A-M3/57T pinout, SMCG22A-M3/57T application, or SMCG22A-M3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 75 °C/W), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ns) and low incremental surge resistance. Its design targets transient suppression from inductive load switching and ESD events, with bidirectional variants (e.g., SMCG22CA) sharing identical VBR and PPPM ratings but differing in polarity marking and leakage behavior.
The SMCG22A-M3/57T is rated for TJ = –55 °C to +150 °C operation, derates linearly above 25 °C per Figure 2, and achieves 1500 W peak pulse power only when mounted on specified 0.31" × 0.31" copper pads. Its 200 A IFSM rating supports single half-sine surge handling (8.3 ms), while VF = 3.5 V at 100 A confirms low forward conduction loss during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - Confirmed breakdown threshold range; ensures reliable triggering across process variation. |
| VC @ IPPM | 35.5 V at 42.3 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling capability; validates protection against IEC 61000-4-5 Level 4 surges. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard pad layout; informs thermal derating in enclosed environments. |
| IFSM | 200 A - Non-repetitive forward surge current rating (8.3 ms); supports inrush or latch-up event tolerance. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing leaded case with matte tin-plated terminals, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound. Cathode indicated by band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected line ground or low-side return path; conducts during reverse-transient clamping. |
| Cathode | Forward current exit (unidirectional) | Connected to protected IC/MOSFET input; carries clamping current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates moisture-induced parameter drift in humid environments. |
| Low-profile DO-215AB package | 0.220"–0.245" height enables use in space-constrained automotive ECUs and industrial controllers. |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-J-STD-020 reflow standards and EU environmental mandates without compromising surge robustness. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking-critical for high-volume automotive manufacturing. |
| Excellent clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during transients, protecting 24 V logic interfaces and CAN transceivers within spec. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) from load-dump transients up to 35 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes before regulator stage. Use Value: Withstands 1500 W surges and maintains clamping below 35.5 V, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground lines to absorb sub-100 ns ESD pulses. Use Value: Fast response time and 35.5 V clamping ensure sensor output integrity remains within ±0.5% full-scale error during 8 kV contact discharge. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered network switches against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary TVS on input bulk capacitor rail, coordinated with secondary MOV and fuse for staged protection. Use Value: 22 V VWM allows stable operation under normal 48 V nominal with 10% ripple, while 1500 W PPPM handles induced surges per IEC 61000-4-5. | Use Scenario: Protecting high-side gate drivers in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp dv/dt-induced transients exceeding MOSFET VGS rating. Use Value: 35.5 V clamping prevents gate oxide breakdown in 25 V-rated SiC MOSFETs, enabling reliable 100 kHz PWM operation. |
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 | Same VWM (22 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy surges; unsuitable for automotive load-dump or industrial 48 V line protection | Select SMAJ22A-E3/57T only for cost-sensitive consumer applications with <500 W surge requirements. |
| SMCJ22A-M3/57T | Same VWM (22 V), higher PPPM (3000 W), larger SMC (DO-214AB) package, RθJA = 40 °C/W | Requires more PCB area; better suited for high-power industrial drives where thermal margin is critical | Choose SMCJ22A-M3/57T when system-level surge testing exceeds 1500 W or ambient temperatures exceed 105 °C. |
Compared with SMAJ22A-E3/57T and SMCJ22A-M3/57T, the SMCG22A-M3/57T delivers optimal balance of compact DO-215AB footprint, 1500 W surge capacity, and AEC-Q101 qualification-making it the preferred choice for space-constrained automotive and industrial modules requiring validated reliability.
Availability
SMCG22A-M3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and motor drive gate protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCG22A-M3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMCG series was developed specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101 compliance and robust performance in 12 V/24 V/48 V automotive and industrial power systems.
FAQ
What is the clamping voltage of SMCG22A-M3/57T and how is it measured?
The SMCG22A-M3/57T has a maximum clamping voltage (VC) of 35.5 V at a peak pulse current (IPPM) of 42.3 A, tested with a 10/1000 µs waveform per IEC 61000-4-5. This value is measured across the device terminals under standardized surge conditions and reflects the highest voltage seen by protected circuitry during worst-case transient events. The SMCG22A-M3/57T maintains this clamping performance when mounted on the recommended 0.31" × 0.31" copper pad layout.
Is SMCG22A-M3/57T suitable for automotive applications?
Yes, the SMCG22A-M3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including glass-passivated junction, halogen-free M3 material set, MSL Level 1 reflow compatibility, and operating temperature range of –55 °C to +150 °C-meets stringent automotive reliability requirements. It is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where load-dump and ISO 7637-2 immunity are mandatory.
How does the M3 suffix affect SMCG22A-M3/57T's compliance and performance?
The M3 suffix indicates that the SMCG22A-M3/57T is halogen-free, RoHS compliant, and industrial grade-verified per Vishay's material categorization standard (doc?99912). This designation does not alter electrical parameters versus E3 versions but ensures compliance with environmental regulations and whisker resistance (JESD 201 Class 2). Performance remains identical: same VWM, VBR, PPPM, and thermal characteristics as non-M3 variants.
What is the thermal resistance of SMCG22A-M3/57T and how does it impact layout design?
The SMCG22A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value directly impacts PCB layout: reducing pad size or omitting thermal vias increases RθJA, accelerating junction temperature rise during repeated surges. For sustained operation above 85 °C ambient, designers must apply derating per Figure 2 in the datasheet to maintain safe TJ ≤ 150 °C.
Can SMCG22A-M3/57T be used in bidirectional configurations?
No-SMCG22A-M3/57T is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics for single-polarity operation. For bidirectional protection, Vishay offers the SMCG22CA variant, which shares identical VWM (22 V), VBR (24.4–26.9 V), and PPPM (1500 W) but exhibits symmetrical clamping in both directions and no polarity marking. Substituting SMCG22A-M3/57T for SMCG22CA risks failure in AC-coupled or floating-line applications.
SMCG22A-M3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG22A-M3/57T FAQ
1.How can I place an order for SMCG22A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG22A-M3/57T 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 SMCG22A-M3/57T reliable?
The price and inventory of SMCG22A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG22A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG22A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG22A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG22A-M3/57T?
SMCG22A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG22A-M3/57T 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 SMCG22A-M3/57T?
For technical support, including SMCG22A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG22A-M3/57T requirements.
6.How does Aetrix verify that SMCG22A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG22A-M3/57T 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 SMCG22A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG22A-M3/57T?
All SMCG22A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG22A-M3/57T, 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 SMCG22A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG22A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG22A-M3/57T Tags
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