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Vishay General Semiconductor - Diodes Division SMCG36A-E3/9AT
- Part No.:
- SMCG36A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG36A-E3/9AT.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,436
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Product details
Overview
SMCG36A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamping voltage of 58.1 V at 25.8 A. It protects MOSFETs and ICs against inductive switching transients in automotive power electronics.
For engineers reviewing the SMCG36A-E3/9AT datasheet, SMCG36A-E3/9AT pinout, SMCG36A-E3/9AT application, or SMCG36A-E3/9AT equivalent, this device is selected for high-energy surge suppression in AEC-Q101-compliant 12 V/24 V automotive subsystems where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (40.0–44.2 V), it avalanches to limit transient energy across protected circuit nodes. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and robust surge handling up to 200 A IFSM (8.3 ms half-sine).
Designed for PCB-level protection of DC power rails and signal lines, it delivers 1500 W peak pulse power under 10/1000 μs waveform with 58.1 V clamping at rated IPPM, and exhibits RθJA = 75 °C/W for thermal management on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for normal rail operation. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system nominal voltage. |
| VC at IPPM | 58.1 V at 25.8 A - Clamped voltage during 10/1000 μs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 1500 W - Peak transient energy absorption capability; supports high-energy load-dump and ISO 7637-2 Pulse 5a events. |
| ID at VWM | ≤1.0 μA - Ultra-low reverse leakage; avoids parasitic current draw in battery-critical automotive modules. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood environments without derating. |
| MSL Level | Level 1 (260 °C peak) - Compatible with standard lead-free reflow profiles; no moisture sensitivity handling required. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing package with matte tin-plated leads; meets UL 94 V-0 and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability under thermal stress and humidity. |
| Low incremental surge resistance | Enables tight clamping (58.1 V at 25.8 A) with minimal voltage overshoot during fast transients. |
| MSL Level 1 rating | Eliminates bake requirements prior to SMT assembly; compatible with standard J-STD-020 reflow profiles. |
| 1500 W 10/1000 μs rating | Meets ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge immunity requirements for 12 V systems. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting gate drivers and MCU power rails in 12 V/24 V vehicle body control modules exposed to alternator load dump. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBAT and GND, triggered within <1 ns to clamp transients to ≤58.1 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic ICs and 40 V-rated MOSFETs during 100 V/350 ms load dump events. |
Use Scenario: Safeguarding IGBT gate terminals and feedback sensing lines in variable-frequency AC drives subject to inductive kickback. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; unidirectional SMCG36A-E3/9AT placed anode-to-ground to suppress negative-going spikes on isolated DC bus rails. Use Value: Limits voltage reversal across optocoupler inputs and gate resistors to safe levels (<60 V), preserving isolation integrity and timing accuracy. |
| Telecom DC Power Interface | Automotive Sensor Signal Line Protection |
Use Scenario: Shielding PoE-powered Ethernet switch ports from lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary front-end TVS in series with fuse and common-mode choke; clamps differential surges before DC-DC converter input stage. Use Value: Withstands 1500 W peak pulses while maintaining ≤58.1 V clamping, enabling use of lower-voltage-rated input capacitors and MOSFETs. |
Use Scenario: Guarding LIN bus transceivers and Hall-effect sensor outputs in engine control units against battery reverse polarity and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional configuration with cathode on signal line, anode grounded; clamps positive excursions above 36 V while blocking normal 0–12 V signaling. Use Value: Maintains signal fidelity below VWM (36 V) with <1.0 μA leakage, ensuring accurate analog sensor readings and noise-free digital communication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VWM (36 V) and VC (58.1 V), but lower PPPM (400 W) and smaller SMA (DO-214AC) package. | Not qualified to AEC-Q101; limited to industrial/commercial environments without extended temperature or reliability validation. | Select when cost or board space is prioritized over automotive qualification and 1500 W surge margin. |
| SMCJ36A-E3/9AT | Identical electrical specs (VWM, VBR, VC, PPPM) and AEC-Q101 qualification, but larger SMC (DO-214AB) package with higher thermal mass. | Higher RθJA (50 °C/W vs. 75 °C/W) allows better steady-state power dissipation but requires larger pad layout. | Prefer when sustained power dissipation (>1 W) or repeated surge duty cycles demand improved thermal performance. |
Compared with SMAJ36A-E3/57T, SMCG36A-E3/9AT provides triple the surge power rating and automotive qualification; versus SMCJ36A-E3/9AT, it offers identical protection performance in a 30 % smaller footprint-critical for dense automotive ECUs where board area is constrained.
Availability
SMCG36A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom DC interface applications requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for SMCG36A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The SMCG series was developed specifically for high-energy, automotive-grade transient suppression in space-constrained surface-mount designs, targeting ISO 7637-2 and IEC 61000-4-5 compliance without sacrificing thermal or mechanical robustness.
FAQ
What is the clamping voltage of SMCG36A-E3/9AT at its rated peak pulse current?
The SMCG36A-E3/9AT has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 25.8 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG36A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG36A-E3/9AT qualified for automotive applications?
Yes, SMCG36A-E3/9AT is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD47. Its construction-glass-passivated junction, matte tin-plated leads, and MSL Level 1 rating-meets automotive manufacturing and under-hood environmental requirements. The SMCG36A-E3/9AT is specified for use in body control modules, power distribution units, and sensor interfaces.
What does the "E3/9AT" suffix indicate in SMCG36A-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin plating; "9AT" specifies packaging in a 13-inch diameter plastic tape and reel containing 3500 units. This format supports high-volume automated placement and is distinct from the "57T" 7-inch reel option (850 units). The SMCG36A-E3/9AT uses the same die and electrical characteristics as other SMCG36A variants-only packaging and qualification level differ.
How does SMCG36A-E3/9AT compare to bidirectional TVS diodes like SMCG36CA?
SMCG36A-E3/9AT is unidirectional and features a cathode band for polarity-sensitive placement; SMCG36CA is bidirectional with no marking and symmetrical clamping in both directions. While both share identical VWM (36 V), VBR (40.0–44.2 V), and PPPM (1500 W), the SMCG36A-E3/9AT is intended for DC rail protection where polarity is fixed, whereas SMCG36CA suits AC-coupled or floating signal lines. The SMCG36A-E3/9AT cannot substitute for SMCG36CA in bidirectional applications without circuit redesign.
What is the thermal resistance of SMCG36A-E3/9AT, and how does it affect layout?
The SMCG36A-E3/9AT 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 assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA and risks thermal runaway during repetitive surges. For optimal thermal performance, maintain full copper fill under both terminals and avoid narrow traces-critical for sustaining SMCG36A-E3/9AT's 6.5 W power dissipation rating at TA = 50 °C.
SMCG36A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCG36A-E3/9AT FAQ
1.How can I place an order for SMCG36A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG36A-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 SMCG36A-E3/9AT reliable?
The price and inventory of SMCG36A-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 SMCG36A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG36A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG36A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG36A-E3/9AT?
SMCG36A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG36A-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 SMCG36A-E3/9AT?
For technical support, including SMCG36A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG36A-E3/9AT requirements.
6.How does Aetrix verify that SMCG36A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG36A-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 SMCG36A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG36A-E3/9AT?
All SMCG36A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG36A-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 SMCG36A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG36A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG36A-E3/9AT Tags
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