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Vishay General Semiconductor - Diodes Division SMCG13A-M3/9AT
- Part No.:
- SMCG13A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG13A-M3/9AT.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
SMCG13A-M3/9AT 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 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V clamping voltage (VC) at 69.8 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCG13A-M3/9AT datasheet, SMCG13A-M3/9AT pinout, SMCG13A-M3/9AT application, or SMCG13A-M3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), DO-215AB mechanical data, and real-world protection use cases - all aligned to Vishay Document #88457 (Rev. 09-Jan-2024).
Technical Context
The SMCG13A-M3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transients induced by inductive load switching or ESD events. Its bidirectional counterpart would carry a "CA" suffix (e.g., SMCG13CA), but this part is strictly unidirectional - polarity marked by cathode band.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C junction temperature. It meets J-STD-020 MSL Level 1 (260 °C peak reflow) and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 14.4 V / 15.9 V at IT = 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 21.5 V at 69.8 A - clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream ICs. |
| PPPM | 1500 W - peak transient energy handling capability; enables protection against ISO 7637-2 Pulse 1/2a/5a surges. |
| ID @ VWM | 1.0 µA - ultra-low leakage at stand-off voltage; preserves battery life in always-on automotive modules. |
| TJ max. | +150 °C - extended thermal rating supports under-hood placement without derating in high-ambient environments. |
| Package | SMCG (DO-215AB) - surface-mount gull-wing outline with 8.0 mm × 8.0 mm copper pad requirement per terminal for thermal reliability. |
Pinout & Package
SMCG13A-M3/9AT uses the SMCG (DO-215AB) package: a compact, low-profile gull-wing SMD outline with two terminals. Polarity is marked by a cathode band on the body; the banded end is the cathode (K), and the opposite end is the anode (A). Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal per Vishay's thermal derating guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive reference terminal | Connected to protected line (e.g., 12 V supply rail); conducts forward surge current only in fault condition. |
| Cathode (K) | Clamping output terminal | Connected to ground or lower-potential return path; sinks transient current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS compliant (M3) | Meets IEC 61249-2-21 and JEDEC J-STD-20E; eliminates brominated flame retardants while maintaining UL 94 V-0 molding compound flammability rating. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift - critical for long-life industrial deployments. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning; simplifies manufacturing integration. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for 3.3 V/5 V logic interfaces. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC/DC input, clamping surges within 1 ns to limit downstream voltage stress. Use Value: Withstands 1500 W peak pulse and maintains VWM = 13 V - allowing safe margin above nominal 12 V system while clamping to ≤21.5 V. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across signal and ground to absorb inductive kickback from solenoid drivers or relay coils. Use Value: 1.0 µA ID at VWM preserves loop accuracy; 21.5 V VC prevents op-amp saturation or ADC input damage during 10/1000 µs surges. |
| Consumer USB Port ESD Suppression | Telecom Base Station DC Feed Protection |
Use Scenario: Secondary-level ESD protection on VBUS lines of USB-C ports in laptops and docking stations. IC Role / Device Role / Timing Role: Unidirectional clamping device placed after primary polymer PTC, absorbing residual ±8 kV contact discharge per IEC 61000-4-2. Use Value: Fast <1 ns response and low VC ensure USB PHY ICs see sub-22 V stress - well below absolute maximum ratings of most USB transceivers. |
Use Scenario: Protecting -48 V DC feed inputs in 4G/5G remote radio units (RRUs) from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: TVS installed at DC input connector to shunt common-mode transients into chassis ground before entering DC/DC converter stage. Use Value: 1500 W PPPM and 150 °C TJ max enable reliable operation in uncooled outdoor enclosures exposed to wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/57T | Same VWM (13 V), but lower PPPM (400 W) and higher VC (21.5 V @ 19.2 A); SMA (DO-214AC) package, not AEC-Q101 qualified. | Limited to consumer/industrial non-automotive use; insufficient for ISO 7637-2 Pulse 5a testing. | Select when cost sensitivity outweighs automotive qualification and surge robustness requirements. |
| SMCJ13A-M3/9AT | Identical VWM (13 V), VBR (14.4–15.9 V), and VC (21.5 V), but rated for 3000 W PPPM; same DO-215AB package and M3 halogen-free compliance. | Higher surge margin enables use in harsher environments (e.g., commercial vehicle alternator loads). | Choose when system-level surge testing exceeds 1500 W or requires headroom for aging derating. |
Compared with SMAJ13A-E3/57T, SMCG13A-M3/9AT delivers triple the surge power rating and automotive qualification; versus SMCJ13A-M3/9AT, it trades 3000 W capability for optimized cost and footprint in mid-tier automotive applications where 1500 W suffices.
Availability
SMCG13A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom DC feed hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG13A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series targets high-energy transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 qualification, halogen-free construction, and DO-215AB thermal performance for under-hood and factory-floor deployment.
FAQ
What is the clamping voltage of SMCG13A-M3/9AT and how is it measured?
The SMCG13A-M3/9AT has a maximum clamping voltage (VC) of 21.5 V, measured at a peak pulse current (IPPM) of 69.8 A using a 10/1000 µs waveform per IEC 61000-4-5. This value reflects worst-case voltage seen by protected circuitry during standardized surge testing and is confirmed in Vishay Document #88457, Table on page 2. The SMCG13A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG13A-M3/9AT qualified for automotive applications?
Yes, SMCG13A-M3/9AT is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document #88457, page 1, FEATURES section and page 3, Thermal Characteristics note). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance - making the SMCG13A-M3/9AT suitable for engine control, body electronics, and ADAS modules where reliability under thermal and electrical stress is mandatory.
What does the "M3" suffix mean in SMCG13A-M3/9AT?
The "M3" suffix in SMCG13A-M3/9AT indicates halogen-free, RoHS-compliant construction meeting JEDEC J-STD-20E and IEC 61249-2-21 standards, with UL 94 V-0 flammability-rated epoxy molding compound. It also denotes compliance with JESD 201 Class 2 whisker resistance. This distinguishes it from "E3" (RoHS but not halogen-free) and "HM3" (AEC-Q101 + halogen-free) variants - confirming the SMCG13A-M3/9AT is industrial-grade with enhanced environmental compliance.
How does SMCG13A-M3/9AT differ from SMCG13CA?
SMCG13A-M3/9AT is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. SMCG13CA is its bidirectional counterpart - no polarity marking, symmetric VBR in both directions, and used in AC-coupled or differential signal paths like RS-485 or CAN bus. The "A" vs "CA" suffix directly defines conduction behavior, and they are not interchangeable without circuit redesign. The SMCG13A-M3/9AT datasheet confirms unidirectional-only operation in the PRIMARY CHARACTERISTICS table.
What PCB layout guidance applies to SMCG13A-M3/9AT?
Vishay specifies mounting SMCG13A-M3/9AT on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated thermal performance and 1500 W PPPM. Pad dimensions directly impact RθJA (75 °C/W typical) and surge current derating - undersized pads cause premature thermal failure. The SMCG13A-M3/9AT package outline drawing (page 4) shows gull-wing lead geometry; solder mask-defined pads and 2-oz copper are recommended for high-reliability automotive layouts.
SMCG13A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- 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)
SMCG13A-M3/9AT FAQ
1.How can I place an order for SMCG13A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG13A-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 SMCG13A-M3/9AT reliable?
The price and inventory of SMCG13A-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 SMCG13A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG13A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG13A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG13A-M3/9AT?
SMCG13A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG13A-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 SMCG13A-M3/9AT?
For technical support, including SMCG13A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG13A-M3/9AT requirements.
6.How does Aetrix verify that SMCG13A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG13A-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 SMCG13A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG13A-M3/9AT?
All SMCG13A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG13A-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 SMCG13A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG13A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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