My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG24A-E3/9AT
- Part No.:
- SMCG24A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24A-E3/9AT.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,165
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG24A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.6 A peak pulse current (IPPM), and 38.9 V clamping voltage (VC) under 10/1000 µs surge. It delivers 1500 W peak pulse power and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMCG24A-E3/9AT datasheet, SMCG24A-E3/9AT pinout, SMCG24A-E3/9AT application, or SMCG24A-E3/9AT equivalent, this device is selected for robust overvoltage protection on 24 V power rails, sensor signal lines, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and high surge immunity are required.
Technical Context
The SMCG24A-E3/9AT uses an avalanche breakdown mechanism to clamp transient voltages above its VBR threshold, limiting downstream voltage to ≤38.9 V during a 10/1000 µs 1500 W surge. Its glass-passivated junction ensures stable leakage (<1 µA at 24 V) and long-term reliability under repeated surges.
Designed for surface-mount assembly on standard PCB pads (0.31" × 0.31"), it operates across –55 °C to +150 °C junction temperature, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling direct integration into space-constrained automotive control modules without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail compatibility. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown range ensures reliable triggering margin above VWM. |
| VC @ IPPM | 38.9 V at 38.6 A - Clamped voltage during full-rated 1500 W surge; determines maximum stress on protected ICs. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments without derating. |
| Package | SMCG (DO-215AB) - Low-profile, gull-wing SMD package optimized for automated placement and IPC Class 3 reliability. |
Pinout & Package
SMCG24A-E3/9AT is housed in the SMCG (DO-215AB) package: a surface-mount, gull-wing leaded case with cathode band marking. Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize VC overshoot. |
| Cathode | Current exit terminal in forward bias; marked by band; connected to protected line | Directly interfaces with 24 V rail or signal line; polarity-sensitive - reverse connection disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock - suitable for engine control units and ADAS sensors. |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) without degradation. |
| Fast response time | Sub-nanosecond clamping onset ensures protection of high-speed logic and microcontrollers before damage occurs. |
| Low incremental surge resistance | Minimizes VC rise during high di/dt events - critical for protecting sensitive gate drivers and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping spikes >30 V within nanoseconds. Use Value: Limits voltage seen by downstream regulators to ≤38.9 V, preventing latch-up or permanent damage to PMICs and microcontrollers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting transients before reaching op-amp input stages. Use Value: Maintains signal fidelity with <1 µA leakage at 24 V, avoiding offset errors while surviving ±8 kV contact ESD per IEC 61000-4-2. |
| MOSFET Gate Driver Protection | Telecom Power Supply Clamp |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in motor inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source, clamping Miller-induced voltage spikes during switching transitions. Use Value: Prevents gate oxide rupture with 38.9 V clamping ceiling - well below typical 40 V gate rating - while adding negligible capacitance. | Use Scenario: Secondary-side overvoltage suppression in 24 V telecom rectifier modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on DC output bus, coordinated with upstream MOVs and fuses. Use Value: Delivers 1500 W pulse handling with 75 °C/W thermal resistance - enables compact layout without forced air cooling. |
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), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select only for cost-sensitive industrial controls with <500 W surge exposure and larger board area. |
| SMCJ24A-E3/9AT | Same VWM (24 V), higher PPPM (1500 W), SMC (DO-214AB) package, RθJA = 40 °C/W, 2× footprint area | Better thermal performance but requires 2.5× PCB area; not AEC-Q101 qualified in standard grade. | Prefer when thermal management dominates over space constraints, and automotive qualification is not mandatory. |
Compared with SMAJ24A-E3/57T and SMCJ24A-E3/9AT, the SMCG24A-E3/9AT uniquely balances 1500 W surge capability, AEC-Q101 qualification, and minimal DO-215AB footprint - making it optimal for space-limited automotive and industrial modules requiring full IEC/ISO compliance.
Availability
SMCG24A-E3/9AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and telecom power supplies requiring stable component supply, RoHS-compliant packaging, and AEC-Q101 validation.
Supply support for SMCG24A-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 application-specific optimization.
The SMCG series was developed to deliver high-power transient suppression in ultra-compact surface-mount packages for next-generation automotive and industrial systems where board space and thermal performance are tightly constrained.
FAQ
What is the clamping voltage of SMCG24A-E3/9AT under full-rated surge conditions?
The SMCG24A-E3/9AT has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated 10/1000 µs peak pulse current of 38.6 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a 1500 W transient event. The SMCG24A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG24A-E3/9AT suitable for automotive applications?
Yes, SMCG24A-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validated performance under load dump and ISO 7637-2 pulses make it appropriate for ECUs, ADAS sensors, and lighting control modules. The SMCG24A-E3/9AT meets all stress test requirements defined in the AEC-Q101 standard.
What is the reverse leakage current of SMCG24A-E3/9AT at its rated standoff voltage?
At its 24 V standoff voltage (VWM) and TA = 25 °C, the SMCG24A-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal impact on power rail stability and signal integrity in precision analog circuits and battery-powered systems. The SMCG24A-E3/9AT maintains leakage below 5 µA even at 125 °C junction temperature.
Does SMCG24A-E3/9AT have polarity marking, and how is it oriented on the PCB?
Yes, SMCG24A-E3/9AT features a cathode band marking on the package body, indicating the cathode terminal. During PCB layout, the banded end must connect to the line being protected (e.g., 24 V rail), while the anode connects to ground or return. Incorrect orientation renders the SMCG24A-E3/9AT nonfunctional as a unidirectional suppressor. The SMCG24A-E3/9AT pinout follows standard DO-215AB gull-wing configuration with cathode on the marked side.
What is the thermal resistance of SMCG24A-E3/9AT, and how does it affect PCB layout?
The SMCG24A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" copper pads per terminal. This value assumes minimum recommended pad layout per Vishay specification 88457. To maintain safe operation at full 1500 W surge duty, designers must adhere to this pad size and ensure adequate copper pour around both terminals. The SMCG24A-E3/9AT's RθJL of 15 °C/W further supports efficient heat transfer to PCB traces.
SMCG24A-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG24A-E3/9AT FAQ
1.How can I place an order for SMCG24A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24A-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 SMCG24A-E3/9AT reliable?
The price and inventory of SMCG24A-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 SMCG24A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG24A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24A-E3/9AT?
SMCG24A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24A-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 SMCG24A-E3/9AT?
For technical support, including SMCG24A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24A-E3/9AT requirements.
6.How does Aetrix verify that SMCG24A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG24A-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 SMCG24A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG24A-E3/9AT?
All SMCG24A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24A-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 SMCG24A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG24A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG24A-E3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
