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Vishay General Semiconductor - Diodes Division SMCG24AHE3/57T
- Part No.:
- SMCG24AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24AHE3/57T.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,602
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Product details
Overview
SMCG24AHE3/57T 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 IPPM - ideal for automotive power line and industrial sensor interface protection.
For engineers reviewing the SMCG24AHE3/57T datasheet, SMCG24AHE3/57T pinout, SMCG24AHE3/57T application, or SMCG24AHE3/57T equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for high-reliability automotive and industrial PCB designs.
Technical Context
The SMCG24AHE3/57T operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to transient events such as ESD, load dump, and inductive switching spikes. Its bidirectional counterpart would use the "CA" suffix (e.g., SMCG24CA), but this part is explicitly unidirectional, with cathode marked by a band.
It is rated for TJ = –55 °C to +150 °C, dissipates 6.5 W at TA = 50 °C on infinite heatsink, and exhibits RθJA = 75 °C/W and RθJL = 15 °C/W - confirming suitability for surface-mount applications with moderate thermal management on standard FR-4 boards using 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins; 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 consistent turn-on across production lots. |
| VC @ IPPM | 38.9 V - clamping voltage at 38.6 A (10/1000 µs waveform); determines protected circuit's maximum transient exposure level. |
| PPPM | 1500 W - peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | 1.0 µA - ultra-low leakage at stand-off voltage; minimizes standby power loss in battery-powered systems. |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, surface-mount gull-wing package with matte tin-plated leads, compliant with J-STD-002 and JESD22-B102 solderability requirements. Meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or lower-potential rail during clamping. | Provides low-impedance path to ground for transient energy when reverse-biased voltage exceeds VBR. |
| Cathode | Marked end (band); current exit terminal in forward bias; connected to protected line (e.g., 24 V supply rail). | Defines polarity-sensitive placement - incorrect orientation prevents clamping and risks device failure under overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR over time and temperature, with reduced parameter drift versus epoxy-passivated alternatives. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision and downstream IC survivability. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking; eliminates moisture-related popcorning risk in automated SMT lines. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring extended lifetime and thermal cycling endurance. |
| 1500 W PPPM (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity and ISO 7637-2 Pulse 5a (75 V/350 ms) load dump suppression. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle ECUs against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V rail and chassis ground to clamp surges above 38.9 V within nanoseconds. Use Value: Prevents damage to microcontrollers, CAN transceivers, and power regulators exposed to up to 1500 W transient energy. | Use Scenario: Safeguarding analog input pins of industrial PLC analog I/O modules from field-wiring induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Front-end clamping element on 4–20 mA or 0–10 V signal lines, absorbing fast-rising transients before they reach precision ADCs. Use Value: Maintains signal integrity and extends system uptime by limiting transient-induced latch-up or parametric shift in measurement circuits. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Overvoltage protection on -48 V DC telecom power distribution boards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Reverse-biased TVS on negative rail relative to ground, leveraging unidirectional behavior to block forward conduction while clamping reverse surges. Use Value: Enables compliance with GR-1089-CORE surge immunity requirements without adding series impedance or affecting steady-state regulation. | Use Scenario: Suppressing commutation spikes from brushed DC motors in home appliances (e.g., washing machine drive boards). IC Role / Device Role / Timing Role: Snubber-connected TVS across motor terminals or flyback diode replacement, diverting inductive kickback energy away from MOSFET switches. Use Value: Reduces electromagnetic emissions and prevents MOSFET avalanche failure during repeated motor start-stop cycles. |
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 - smaller footprint but higher RθJA (110 °C/W). | Not AEC-Q101 qualified; suitable for consumer/industrial, not automotive. | Select when board space is constrained and automotive qualification is unnecessary. |
| SMCJ24AHE3/57T | Same VWM (24 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package - higher thermal mass and lower RθJA (50 °C/W). | Also AEC-Q101 qualified; better thermal performance but requires more PCB area. | Select when enhanced thermal margin or legacy SMC footprint compatibility is required. |
Compared with SMAJ24A-E3/57T and SMCJ24AHE3/57T, the SMCG24AHE3/57T delivers identical electrical protection performance in a lower-profile DO-215AB package with AEC-Q101 validation - making it optimal for space-constrained automotive modules where MSL Level 1 reflow and thermal resistance (75 °C/W) meet design targets.
Availability
SMCG24AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG24AHE3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series is engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low-profile packaging, and precise clamping are mandatory.
FAQ
What is the clamping voltage of SMCG24AHE3/57T and how is it measured?
The SMCG24AHE3/57T has a maximum clamping voltage (VC) of 38.9 V, measured at its peak pulse current (IPPM = 38.6 A) under the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88457, Rev. 09-Jan-2024) and reflects the actual voltage seen by downstream circuitry during worst-case transient events - critical for ensuring protected ICs remain within absolute maximum ratings. The SMCG24AHE3/57T achieves this with low incremental surge resistance and a tightly controlled avalanche junction.
Is SMCG24AHE3/57T suitable for automotive applications?
Yes, SMCG24AHE3/57T is AEC-Q101 qualified and specifically designed for automotive use - validated for temperature cycling, highly accelerated life testing (HALT), and ESD robustness per JESD22 standards. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and 1500 W surge rating make it appropriate for engine control units, body electronics, and ADAS power rail protection. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification - a key differentiator from non-automotive variants like SMCG24A-E3/57T.
What does the "HE3/57T" suffix mean in SMCG24AHE3/57T?
In SMCG24AHE3/57T, "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification, while "57T" specifies the preferred packaging: 7-inch diameter plastic tape and reel containing 850 units. This ordering code ensures traceable, automotive-grade material with standardized SMT handling - distinct from "E3" (RoHS, industrial grade only) or "HM3" (halogen-free + AEC-Q101). The base part SMCG24A defines the 24 V stand-off rating and unidirectional configuration.
How does SMCG24AHE3/57T compare to bidirectional TVS diodes like SMCG24CA?
The SMCG24AHE3/57T is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply to ground), whereas SMCG24CA is bidirectional and used in AC-coupled or polarity-agnostic paths (e.g., data lines, audio inputs). Their VWM and PPPM are identical, but SMCG24AHE3/57T has a cathode band marking and conducts forward current up to 200 A (IFSM), while SMCG24CA has no polarity marking and symmetric clamping in both directions. Substituting one for the other without verifying circuit topology risks failure.
What is the thermal resistance of SMCG24AHE3/57T and why does it matter?
The SMCG24AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal - a value confirmed in Vishay's datasheet (88457, page 3). This parameter directly impacts safe power dissipation: at 6.5 W rated power, junction temperature rise is ~488 °C above ambient if uncooled, but real-world layout reduces this significantly. Engineers use RθJA to validate thermal margins in high-temperature environments (e.g., under-hood automotive), ensuring the SMCG24AHE3/57T remains below its 150 °C TJ max during sustained surge events.
SMCG24AHE3/57T 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)
SMCG24AHE3/57T FAQ
1.How can I place an order for SMCG24AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24AHE3/57T 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 SMCG24AHE3/57T reliable?
The price and inventory of SMCG24AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG24AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG24AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24AHE3/57T?
SMCG24AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24AHE3/57T 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 SMCG24AHE3/57T?
For technical support, including SMCG24AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24AHE3/57T requirements.
6.How does Aetrix verify that SMCG24AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG24AHE3/57T 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 SMCG24AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG24AHE3/57T?
All SMCG24AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24AHE3/57T, 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 SMCG24AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG24AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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