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Vishay General Semiconductor - Diodes Division SMCG24AHE3/9AT
- Part No.:
- SMCG24AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24AHE3/9AT.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,301
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Product details
Overview
SMCG24AHE3/9AT 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 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 38.6 A peak pulse current (IPPM), and clamps to ≤38.9 V at rated surge - ideal for automotive power line and CAN bus interface protection.
For engineers reviewing the SMCG24AHE3/9AT datasheet, SMCG24AHE3/9AT pinout, SMCG24AHE3/9AT application, or SMCG24AHE3/9AT equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified clamping performance under 10/1000 µs transients, low incremental surge resistance, and MSL Level 1 reflow compatibility up to 260 °C - critical for high-reliability automotive and industrial PCB designs.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and stable clamping across temperature. Its 1500 W PPPM rating is validated on 8.0 mm × 8.0 mm copper pads per terminal, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling effective heat dissipation in compact layouts.
The SMCG24AHE3/9AT is specified for operation from −55 °C to +150 °C junction temperature, supports 200 A non-repetitive forward surge (IFSM), and exhibits ≤1.0 µA reverse leakage at VWM - meeting stringent requirements for automotive ECUs, sensor interfaces, and 12 V/24 V power rail protection where reliability under load dump and ISO 7637-2 pulses is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping initiates; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at IT = 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | ≤38.9 V at 38.6 A - clamping voltage under 10/1000 µs surge; limits downstream IC stress to safe levels in automotive load-dump scenarios. |
| PPPM | 1500 W - peak pulse power handling capability; enables protection against high-energy transients like ISO 16750-2 Pulse 5a/b. |
| IFSM | 200 A - single half-sine surge rating (8.3 ms); supports robustness against battery reverse-connection or jump-start events. |
| TJ max. | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments without derating. |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient; informs heatsinking requirements when mounted on standard PCB copper areas. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing package with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Meets UL 94 V-0 flammability rating and AEC-Q101 qualification. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return path. | Provides reference node for clamping action; must be routed with low-inductance trace to minimize voltage overshoot during fast transients. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., 24 V supply or signal line). | Defines polarity-sensitive connection point; reverse connection disables clamping function and risks device failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - required for ECU, ADAS, and body control modules. |
| Glass passivated chip junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift - critical for long-term field deployment in harsh environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or inductive switching), improving protection margin for downstream MOSFETs and microcontrollers. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow assembly without pre-baking; eliminates production delays and moisture-related delamination risk. |
| 1500 W 10/1000 µs rating | Supports compliance with ISO 7637-2 and ISO 16750-2 automotive transient standards without external series impedance or derating. |
Applications
| Automotive Power Rail Protection | CAN Bus Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines in commercial vehicle ECUs against load dump transients (ISO 16750-2 Pulse 5b) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping surges within 1 ns to limit voltage seen by downstream regulators. Use Value: Clamps to ≤38.9 V at 38.6 A, maintaining safe operating voltage for 40 V-rated input stages while surviving 200 A surge events. |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TJA1057) from ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to common ground, providing symmetric clamping without affecting signal integrity. Use Value: Low capacitance (<100 pF at 0 V) and fast response preserve CAN bit timing up to 5 Mbps; AEC-Q101 qualification ensures longevity in vehicle networks. |
| Industrial Sensor Signal Line Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Shielding analog outputs (4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation from inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: TVS placed at connector interface, shunting transients before they reach precision op-amps or ADC front-ends. Use Value: 1.0 µA max leakage at 24 V VWM prevents measurement error; 26.7–29.5 V VBR ensures no conduction during normal operation. |
Use Scenario: Protecting high-side/low-side gate drivers (e.g., IR2110) in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: TVS installed between gate and source terminals to clamp dv/dt-induced overshoot and prevent false turn-on of MOSFETs. Use Value: Sub-ns response and ≤38.9 V clamping prevent gate oxide breakdown; 1500 W rating absorbs repetitive switching energy without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T | Same VWM (24 V) and PPPM (400 W), but lower 400 W rating and SMA (DO-214AC) package; RθJA = 110 °C/W vs. 75 °C/W. | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not suitable for ISO 16750-2 load dump. | Select when cost sensitivity outweighs surge robustness and board space permits larger thermal pad area. |
| SMCJ24AHE3/9AT | Identical VWM, VBR, and PPPM (1500 W), but SMC (DO-214AB) package; 20 % larger footprint and higher RθJA (85 °C/W). | Compatible for same surge levels but requires larger PCB area and more copper for thermal management. | Choose only if legacy SMC layout exists; SMCG offers superior power density and MSL-1 compatibility. |
Compared with SMAJ24A-E3/57T and SMCJ24AHE3/9AT, the SMCG24AHE3/9AT delivers identical 1500 W surge capability in a smaller DO-215AB footprint with better thermal performance (75 °C/W), making it optimal for space-constrained, high-reliability automotive modules requiring AEC-Q101 validation.
Availability
SMCG24AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and motor drive gate driver circuits requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMCG24AHE3/9AT 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SMCG series was engineered specifically for AEC-Q101-compliant transient suppression in space-constrained automotive power and signal lines, combining high surge capacity with low-profile surface-mount packaging and industry-leading thermal performance.
FAQ
What is the clamping voltage of the SMCG24AHE3/9AT under maximum rated surge current?
The SMCG24AHE3/9AT clamps to a maximum of 38.9 V when subjected to its rated 38.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCG24AHE3/9AT suitable for bidirectional transient protection?
No, the SMCG24AHE3/9AT is a unidirectional TVS diode, as indicated by the "A" suffix (vs. "CA" for bidirectional variants). It conducts only in reverse bias above VBR and must be oriented with the cathode band toward the protected line. For bidirectional protection - such as AC signal lines or differential buses - a part like SMCG24CAHE3/9AT would be required instead.
Does the SMCG24AHE3/9AT meet automotive qualification standards?
Yes, the SMCG24AHE3/9AT is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 09-Jan-2024 (Document Number: 88457). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its suitability for under-hood and chassis-mounted automotive applications.
What is the meaning of the "HE3/9AT" suffix in SMCG24AHE3/9AT?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "9AT" specifies the packaging format: 13-inch diameter plastic tape and reel containing 3500 units. This differs from "57T" (7-inch reel, 850 units) and ensures compatibility with high-volume SMT placement equipment used in automotive electronics manufacturing.
How does the thermal performance of SMCG24AHE3/9AT compare to similar TVS diodes?
The SMCG24AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on recommended 8.0 mm × 8.0 mm copper pads - significantly lower than SMAJ (110 °C/W) and competitive with SMCJ (85 °C/W). This enables higher sustained power dissipation and improved reliability in thermally dense automotive PCB layouts where airflow is limited.
SMCG24AHE3/9AT 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG24AHE3/9AT FAQ
1.How can I place an order for SMCG24AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24AHE3/9AT 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 SMCG24AHE3/9AT reliable?
The price and inventory of SMCG24AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG24AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG24AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24AHE3/9AT?
SMCG24AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24AHE3/9AT 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 SMCG24AHE3/9AT?
For technical support, including SMCG24AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24AHE3/9AT requirements.
6.How does Aetrix verify that SMCG24AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG24AHE3/9AT 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 SMCG24AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG24AHE3/9AT?
All SMCG24AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24AHE3/9AT, 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 SMCG24AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG24AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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