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Vishay General Semiconductor - Diodes Division SMCG28AHE3/57T
- Part No.:
- SMCG28AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG28AHE3/57T.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,259
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Product details
Overview
SMCG28AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMCG (DO-215AB) package, with 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR), 45.4 V clamping voltage (VC) at 33.0 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It protects MOSFETs and ICs in automotive power circuits against inductive switching transients.
For engineers reviewing the SMCG28AHE3/57T datasheet, SMCG28AHE3/57T pinout, SMCG28AHE3/57T application, or SMCG28AHE3/57T equivalent, key selection criteria include AEC-Q101 qualification, 1500 W surge capability with 10/1000 µs waveform, low clamping ratio (VC/VBR ≈ 1.4), and RoHS-compliant matte tin-plated leads suitable for automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform, with thermal derating above 25 °C per Figure 2 and maximum junction temperature of 150 °C.
The SMCG28AHE3/57T uses a modified gull-wing leadframe in DO-215AB outline, with cathode band marking and polarity-sensitive mounting. It meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 2 whisker resistance, and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 31.1 V / 34.4 V at 1.0 mA - Ensures reliable avalanche initiation within tight tolerance band |
| VC @ IPPM | 45.4 V at 33.0 A - Limits downstream voltage stress during 10/1000 µs surge events |
| PPPM | 1500 W - Withstands high-energy transients common in 12 V/24 V automotive systems |
| TJ max | +150 °C - Enables operation in under-hood environments with minimal derating |
| RθJA | 75 °C/W - Requires minimum 8.0 mm × 8.0 mm copper pad per terminal for rated power dissipation |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount modified gull-wing, 2-terminal configuration. Cathode identified by molded band. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground | Low-inductance path for surge return; must be routed with minimal loop area to reduce ringing |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 12 V rail) | Marked with band; defines polarity-sensitive placement-reversal disables protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and body electronics applications |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to downstream ICs during transient suppression |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and compatibility with Pb-free and SnPb processes |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails feeding engine control units (ECUs) from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter capacitor. Use Value: Clamps 1500 W surges to ≤45.4 V, preventing latch-up or gate oxide damage in downstream PMICs and microcontrollers. | Use Scenario: Safeguarding IGBT gate drivers in variable-frequency drives from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS mounted directly across driver output to suppress fast-rising transients (<1 ns rise time). Use Value: Sub-nanosecond response and low dynamic impedance limit overshoot to <50 V, preserving gate oxide integrity. |
| Automotive Lighting Systems | Telecom DC Power Input |
Use Scenario: Suppressing switching transients generated by LED headlamp drivers during PWM dimming cycles. IC Role / Device Role / Timing Role: Unidirectional TVS on 24 V input line upstream of buck controller. Use Value: Withstands repetitive 10/1000 µs pulses up to 33 A while maintaining VWM = 28 V for stable regulation margin. | Use Scenario: Protecting PoE-powered equipment front-end from lightning-induced surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary-level TVS on DC input before DC/DC converter stage. Use Value: 1500 W PPPM rating handles Category A/B surge test levels per IEC 61000-4-5 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 |
|---|---|---|---|
| SMAJ28A-E3/52T | Same VWM (28 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Lower surge capacity; suited for consumer-grade, non-automotive applications | Select when cost or board space is critical and surge energy is ≤400 W |
| 1.5KE28A | Through-hole DO-201 package, same VWM/VC, higher IFSM (200 A), no AEC-Q101 qualification | Lacks automotive qualification and SMT compatibility; requires wave soldering | Select only for legacy through-hole designs where rework flexibility outweighs AEC compliance |
Compared with SMAJ28A-E3/52T and 1.5KE28A, the SMCG28AHE3/57T delivers 3.75× higher surge power handling in an AEC-Q101-qualified SMT package, enabling compact, high-reliability protection in automotive and industrial power rails where 1500 W transients are specified.
Availability
SMCG28AHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom DC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMCG28AHE3/57T 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, and transient protection devices with emphasis on reliability and automotive-grade performance.
The SMCG series is designed specifically for high-power, surface-mount transient suppression in harsh environments-including under-hood automotive, industrial automation, and telecom infrastructure-where AEC-Q101 qualification and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMCG28AHE3/57T at its rated peak pulse current?
The SMCG28AHE3/57T has a maximum clamping voltage (VC) of 45.4 V at 33.0 A peak pulse current (IPPM), measured using the standard 10/1000 µs double-exponential waveform. This value ensures downstream components see limited overvoltage during surge events, and is verified per ANSI/IEEE C62.35 test conditions with 8.0 mm × 8.0 mm copper pads per terminal.
Is SMCG28AHE3/57T qualified for automotive applications?
Yes, SMCG28AHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88457, Revision 09-Jan-2024). The HE3 suffix explicitly denotes AEC-Q101 qualification, and the device has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements for automotive under-hood use.
What does the "57T" suffix indicate in SMCG28AHE3/57T?
The "57T" suffix in SMCG28AHE3/57T specifies the packaging format: 7-inch diameter plastic tape and reel, with a base quantity of 850 units per reel. This is the standard SMT-ready delivery mode for automated pick-and-place assembly, and is distinct from the "9AT" variant (13-inch reel, 3500 units).
How does the SMCG28AHE3/57T differ from bidirectional variants like SMCG28CA?
The SMCG28AHE3/57T is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. In contrast, SMCG28CA is bidirectional, lacks polarity marking, and suppresses transients in both directions-making it suitable for AC signal lines or differential buses. Their VWM, VBR, and VC values differ accordingly, and they are not interchangeable without circuit redesign.
What thermal derating applies to SMCG28AHE3/57T above 25 °C ambient?
SMCG28AHE3/57T must be derated linearly above TA = 25 °C, per Figure 2 in the Vishay datasheet (Doc. 88457). At 100 °C ambient, its peak pulse power (PPPM) drops to approximately 750 W (50% of 1500 W), and its maximum junction temperature remains capped at +150 °C. Derating assumes the recommended 8.0 mm × 8.0 mm copper pad layout per terminal.
SMCG28AHE3/57T 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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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)
SMCG28AHE3/57T FAQ
1.How can I place an order for SMCG28AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG28AHE3/57T 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 SMCG28AHE3/57T reliable?
The price and inventory of SMCG28AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG28AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG28AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG28AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG28AHE3/57T?
SMCG28AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG28AHE3/57T 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 SMCG28AHE3/57T?
For technical support, including SMCG28AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG28AHE3/57T requirements.
6.How does Aetrix verify that SMCG28AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG28AHE3/57T 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 SMCG28AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG28AHE3/57T?
All SMCG28AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG28AHE3/57T, 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 SMCG28AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG28AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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