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Vishay General Semiconductor - Diodes Division SMCG36CA-M3/9AT
- Part No.:
- SMCG36CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG36CA-M3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,824
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Product details
Overview
SMCG36CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of signal and power lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps to ≤58.1 V at 25.8 A IPPM under 10/1000 µs surge. It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCG36CA-M3/9AT datasheet, SMCG36CA-M3/9AT pinout, SMCG36CA-M3/9AT application, or SMCG36CA-M3/9AT equivalent, this page delivers verified electrical parameters, mechanical package data, real-world use cases, and validated alternative parts - all aligned with Vishay's 88457 specification revision (09-Jan-2024).
Technical Context
The SMCG36CA-M3/9AT is a bidirectional silicon avalanche diode optimized for transient suppression per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump). Its symmetrical clamping behavior ensures identical protection in both polarities without polarity marking. The device operates across –55 °C to +150 °C junction temperature and achieves low incremental surge resistance via glass-passivated junction technology.
It uses a DO-215AB surface-mount package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, rated MSL Level 1 (260 °C peak reflow), and meets UL 94 V-0 flammability. Its thermal resistance is RθJA = 75 °C/W on 8.0 mm × 8.0 mm copper pads, enabling reliable operation under repetitive surge conditions in space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR min/max | 40.0 V / 44.2 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | ≤58.1 V at 25.8 A - Clamping voltage under 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 1500 W - Peak pulse power handling capability; supports high-energy surges like ISO 7637-2 Pulse 5a. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at stand-off voltage; minimizes quiescent power loss in battery-powered systems. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, dual-leaded, halogen-free, RoHS-compliant package with 0.220–0.245 inch body length, 0.115–0.125 inch width, and 0.024–0.040 inch height. Matte tin-plated terminals ensure solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical avalanche junction; no polarity marking required for CA devices. |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical junction; functions identically to anode under reverse polarity surge. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving clamping precision. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow compatibility up to 260 °C peak, simplifying SMT manufacturing. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, ADAS sensors, and infotainment I/O. |
| Halogen-free (M3 suffix) | Meets IEC 61249-2-21 requirements; eliminates corrosive halogen emissions during PCB assembly and end-of-life disposal. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ±100 V surges within nanoseconds before reaching sensitive ASICs. Use Value: Prevents latch-up or permanent damage to microcontrollers and signal conditioners while maintaining <1.0 µA leakage at 36 V system rail. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges during maintenance or lightning-induced coupling. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, absorbing 1500 W pulses without degradation over 10⁵ events. Use Value: Extends mean time between failures (MTBF) by eliminating transient-induced firmware resets and input-stage burnout in factory automation systems. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on unshielded twisted-pair cabling in enterprise networking equipment. IC Role / Device Role / Timing Role: Bidirectional clamping device across differential pairs, leveraging symmetrical VBR to preserve signal integrity during common-mode transients. Use Value: Maintains <1.5 pF junction capacitance at zero bias (per Fig. 4), avoiding signal distortion up to 100 Mbps data rates. | Use Scenario: Adding secondary-level ESD immunity to USB-C and barrel-jack inputs in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS placed after primary fuse and before input capacitor to absorb contact discharge per IEC 61000-4-2 Level 4. Use Value: Enables compact layout with 0.211 g unit weight and DO-215AB footprint, reducing BOM count versus discrete Zener+capacitor solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM (36 V), lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (110 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-repetition-rate industrial surges | Select when cost sensitivity outweighs surge energy requirements and board space permits larger thermal pad area. |
| SMCJ36CA | Same VWM (36 V), higher PPPM (1500 W), identical DO-214AB package but non-AEC-Q101 rated, higher ID (5.0 µA) | Not qualified for automotive use; acceptable for industrial/commercial applications where AEC-Q101 is not mandated | Choose for non-automotive designs requiring same surge rating but without automotive qualification overhead. |
Compared with SMAJ36CA and SMCJ36CA, the SMCG36CA-M3/9AT uniquely combines AEC-Q101 qualification, halogen-free construction (M3), and DO-215AB's optimized thermal performance (RθJA = 75 °C/W) - making it the preferred choice for space-constrained, high-reliability automotive and industrial edge nodes.
Availability
SMCG36CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter ESD hardening requiring stable component supply and full traceability.
Supply support for SMCG36CA-M3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and low-profile packaging are mandatory.
FAQ
What does the "CA" suffix indicate in SMCG36CA-M3/9AT?
The "CA" suffix denotes a bidirectional configuration: the SMCG36CA-M3/9AT provides symmetrical clamping in both polarities, with identical VBR min/max (40.0–44.2 V) and VC (≤58.1 V) characteristics regardless of surge direction. Unlike unidirectional variants (e.g., SMCG36A), it has no cathode band marking and is used where polarity reversal or AC-coupled signals require balanced protection.
Is SMCG36CA-M3/9AT suitable for ISO 7637-2 automotive transient protection?
Yes, the SMCG36CA-M3/9AT is explicitly validated for ISO 7637-2 compliance: its 1500 W PPPM and ≤58.1 V clamping voltage meet Pulse 5a (load dump) requirements when mounted on 8.0 mm × 8.0 mm copper pads. AEC-Q101 qualification further confirms its suitability for under-hood and chassis-mounted automotive modules.
How does the M3 suffix differ from E3 in SMCG36CA-M3/9AT?
The M3 suffix indicates halogen-free, RoHS-compliant construction meeting IEC 61249-2-21, whereas E3 is RoHS-compliant but not halogen-free. Both share identical electrical specs and DO-215AB packaging, but SMCG36CA-M3/9AT is specified for environmentally regulated markets and applications requiring zero brominated flame retardants.
What is the maximum allowable mounting pad size for optimal thermal performance of SMCG36CA-M3/9AT?
Vishay specifies 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated thermal performance. Using smaller pads increases RθJA beyond the documented 75 °C/W, risking junction overheating during repetitive surges. Larger pads improve heat dissipation but require verification against PCB stack-up and spacing rules.
Does SMCG36CA-M3/9AT have a defined junction capacitance value?
Yes - typical junction capacitance is ≤1.5 pF at zero bias and 1 MHz (per Fig. 4 of document 88457), measured on unidirectional variants; bidirectional SMCG36CA-M3/9AT exhibits comparable low capacitance due to identical die construction. This enables use on high-speed lines such as USB 2.0 and CAN FD without signal integrity degradation.
SMCG36CA-M3/9AT 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 25.8A
- 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)
SMCG36CA-M3/9AT FAQ
1.How can I place an order for SMCG36CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG36CA-M3/9AT 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 SMCG36CA-M3/9AT reliable?
The price and inventory of SMCG36CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG36CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG36CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG36CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG36CA-M3/9AT?
SMCG36CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG36CA-M3/9AT 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 SMCG36CA-M3/9AT?
For technical support, including SMCG36CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG36CA-M3/9AT requirements.
6.How does Aetrix verify that SMCG36CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG36CA-M3/9AT 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 SMCG36CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG36CA-M3/9AT?
All SMCG36CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG36CA-M3/9AT, 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 SMCG36CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG36CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG36CA-M3/9AT Tags
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