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Vishay General Semiconductor - Diodes Division SMCG36CA-E3/9AT
- Part No.:
- SMCG36CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG36CA-E3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCG36CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. 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 (10/1000 µs waveform), making it suitable for automotive sensor line and industrial I/O port protection.
For engineers reviewing the SMCG36CA-E3/9AT datasheet, SMCG36CA-E3/9AT pinout, SMCG36CA-E3/9AT application, or SMCG36CA-E3/9AT equivalent, this device delivers AEC-Q101 qualified surge immunity with low incremental surge resistance, fast response time, and MSL Level 1 reflow compatibility - critical for high-reliability automotive and industrial PCB designs requiring stable transient suppression without layout redesign.
Technical Context
The SMCG36CA-E3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities with identical VBR min/max (40.0 V / 44.2 V) and VC (≤58.1 V). Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for surface-mount implementation on 8.0 mm × 8.0 mm copper pads, it achieves 1500 W peak pulse power handling per 10/1000 µs waveform while maintaining thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling effective heat dissipation in compact automotive ECUs and industrial controllers without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 40.0 V / 44.2 V - guaranteed avalanche initiation range at 1 mA test current; ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | ≤58.1 V at 25.8 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure level. |
| PPPM | 1500 W - peak pulse power rating; supports high-energy transients like ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage at stand-off voltage; prevents signal distortion or battery drain in always-on sensor interfaces. |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMCG (DO-215AB) - low-profile SMD outline with gull-wing leads; compatible with automated placement and J-STD-002 soldering. |
Pinout & Package
SMCG36CA-E3/9AT uses the SMCG (DO-215AB) surface-mount package: a bidirectional device with no polarity marking; both terminals are electrically symmetrical and interchangeable. The package features matte tin-plated gull-wing leads, meets UL 94 V-0 flammability, and is rated MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 2; either terminal may connect to protected line or ground - no polarity dependency. |
| Terminal 2 | Anode/Cathode (bidirectional) | Completes symmetrical clamping path; enables single-device protection of differential or AC-coupled signal lines without orientation constraints. |
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. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; resists moisture ingress and metallurgical degradation in humid or chemically aggressive environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive switching), improving protection margin for sub-5 V logic and analog front-ends. |
| MSL Level 1 rating | Permits unlimited floor life and single-reflow processing at 260 °C peak - eliminates baking requirements and simplifies high-volume SMT manufacturing. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed between signal line and chassis ground, absorbing energy before it reaches the protected IC's ESD structure. Use Value: Clamps to ≤58.1 V during 1500 W transients, keeping downstream 3.3 V/5 V interface ICs within absolute maximum ratings without derating or additional filtering. | Use Scenario: Safeguarding PLC digital input channels and RS-485 transceivers against field-wiring induced surges and electrostatic discharge in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal lines entering isolated barrier modules, working in concert with series impedance and common-mode chokes. Use Value: Withstands ≥25.8 A (10/1000 µs) surge current while maintaining <1.0 µA leakage at 36 V, preserving signal integrity and minimizing false triggering in high-noise industrial settings. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Shielding USB-C PD and AC-DC adapter secondary-side feedback circuits from mains-coupled transients and hot-plug events. IC Role / Device Role / Timing Role: Secondary-side TVS on VBUS or feedback optocoupler lines, providing last-line defense after primary Y-cap and MOV stages. Use Value: Fast avalanche response (<1 ns) limits voltage overshoot to <58.1 V, preventing latch-up or gate oxide damage in precision voltage reference and error amplifier ICs. | Use Scenario: Protecting Ethernet PHY interfaces and POTS line drivers in telecom access equipment exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage bidirectional clamp on twisted-pair lines, shunting surge energy to ground before it propagates into transformer-coupled isolation barriers. Use Value: 1500 W PPPM rating handles ITU-T K.21 heavy-duty surge tests; DO-215AB footprint allows dense placement near connectors without compromising creepage/clearance. |
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) and PPPM (400 W), but lower power rating and SMA package (DO-214AC); RθJA ≈ 110 °C/W vs. 75 °C/W. | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for ISO 7637-2 Pulse 5a load dump. | Select when cost or board space is constrained and surge energy remains below 400 W - not suitable for automotive power-line protection. |
| SMCJ36CA | Same VWM (36 V) and higher PPPM (1500 W), but larger SMC (DO-214AB) package; 1.5× footprint area and higher RθJA (85 °C/W). | Compatible with same surge standards but requires more PCB area; less optimal for dense automotive modules. | Choose when existing SMC footprint is standardized or when higher thermal mass is needed for extended surge duty cycles. |
Compared with SMAJ36CA and SMCJ36CA, the SMCG36CA-E3/9AT delivers identical 1500 W surge capability in a smaller DO-215AB outline with superior thermal performance (RθJA = 75 °C/W), enabling higher power density and improved reliability in space-constrained AEC-Q101-compliant designs.
Availability
SMCG36CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter feedback circuits, and telecom line card protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCG36CA-E3/9AT 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 automotive qualification.
The SMCG series was developed specifically for high-power, low-profile transient suppression in AEC-Q101-compliant automotive and industrial applications where board space, thermal performance, and surge robustness are critical design constraints.
FAQ
What is the clamping voltage of SMCG36CA-E3/9AT at its rated peak pulse current?
The SMCG36CA-E3/9AT clamps to a maximum of 58.1 V at its specified peak pulse current of 25.8 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions on the minimum recommended 8.0 mm × 8.0 mm copper pad layout and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG36CA-E3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG36CA-E3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMCG36CA-E3/9AT is explicitly AEC-Q101 qualified per the Vishay datasheet (Document Number: 88457, Revision: 09-Jan-2024). It has passed stress tests including temperature cycling, high-temperature reverse bias, and surge endurance required for under-hood and body electronics. The "HE3" and "HM3" base part variants denote AEC-Q101 compliance, and the "E3/9AT" suffix confirms RoHS-compliant industrial-grade packaging with full traceability - all applicable to SMCG36CA-E3/9AT.
How does the SMCG36CA-E3/9AT package differ from SMAJ or SMCJ series TVS diodes?
The SMCG36CA-E3/9AT uses the DO-215AB (SMCG) package: a low-profile gull-wing variant with 0.220–0.245 inch body width and 0.038–0.058 inch lead span, offering smaller footprint and lower thermal resistance (RθJA = 75 °C/W) than SMAJ (DO-214AC) or SMCJ (DO-214AB). Unlike SMAJ36CA (400 W) or SMCJ36CA (1500 W), the SMCG36CA-E3/9AT achieves 1500 W in this compact outline - a key differentiator for space-constrained automotive modules. The SMCG36CA-E3/9AT also features MSL Level 1 rating for 260 °C reflow.
What is the maximum reverse leakage current of SMCG36CA-E3/9AT at its stand-off voltage?
The maximum reverse leakage current (ID) of SMCG36CA-E3/9AT is 1.0 µA at its 36 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor bias networks and battery-powered circuits, preserving accuracy and extending operational life. The SMCG36CA-E3/9AT maintains this specification across its full -55 °C to +150 °C operating junction temperature range, with leakage increasing predictably per datasheet derating curves.
Can SMCG36CA-E3/9AT be used in bidirectional signal line protection without polarity concerns?
Yes, SMCG36CA-E3/9AT is a fully bidirectional TVS diode - its CA suffix denotes symmetrical breakdown behavior in both directions, with identical VBR (40.0–44.2 V) and VC (≤58.1 V) specifications for positive and negative transients. There is no cathode band marking, and either terminal may connect to signal or ground. This makes the SMCG36CA-E3/9AT ideal for protecting AC-coupled interfaces, differential buses (e.g., RS-485, CAN), and floating sensor outputs where polarity reversal or common-mode surge immunity is required.
SMCG36CA-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SMCG36CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG36CA-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCG36CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG36CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG36CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG36CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG36CA-E3/9AT?
SMCG36CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG36CA-E3/9AT 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-E3/9AT?
For technical support, including SMCG36CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG36CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG36CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG36CA-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG36CA-E3/9AT?
All SMCG36CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG36CA-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG36CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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