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Vishay General Semiconductor - Diodes Division SMCG15AHE3/9AT
- Part No.:
- SMCG15AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15AHE3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,929
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Product details
Overview
SMCG15AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection with 15 V standoff voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 µs. It features AEC-Q101 qualification, glass passivated junction, and low incremental surge resistance - deployed to protect MOSFETs and ICs in automotive powertrain control modules.
For engineers reviewing the SMCG15AHE3/9AT datasheet, SMCG15AHE3/9AT pinout, SMCG15AHE3/9AT application, or SMCG15AHE3/9AT equivalent, key selection criteria include clamping voltage (24.4 V at IPPM), reverse leakage (<1.0 µA at 15 V), thermal resistance (RθJA = 75 °C/W), and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS operates as a clamping device in parallel with sensitive circuit nodes, responding within picoseconds to transients exceeding its VWM threshold. Its unidirectional polarity enables integration on DC-biased lines such as automotive 12 V supply rails and sensor power inputs.
The SMCG15AHE3/9AT uses a planar silicon junction with glass passivation for stable avalanche characteristics and robust surge handling. Its DO-215AB package supports automated placement and meets UL 94 V-0 flammability rating, while the HE3 suffix confirms AEC-Q101 qualification and RoHS compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system overvoltage immunity margin. |
| VBR (min/max) | 16.7 V / 18.5 V at 1.0 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction under normal operation. |
| VC @ IPPM | 24.4 V at 61.5 A - Clamping voltage during 1500 W surge defines maximum stress imposed on protected downstream components. |
| PPPM | 1500 W - Peak pulse power rating per 10/1000 µs waveform; determines survivability against ISO 7637-2 Pulse 5a/b surges. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves battery life and signal integrity in always-on automotive circuits. |
| TJ max. | +150 °C - Junction temperature limit enabling use in under-hood environments without derating penalties. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with cathode band marking; 0.310" × 0.400" footprint (7.87 mm × 10.16 mm); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in unidirectional configuration | Enables clamping action when transient exceeds VWM - current flows anode-to-cathode to shunt energy away from protected load. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., 12 V rail) | Defines polarity-sensitive placement - incorrect orientation disables protection and risks catastrophic failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term parameter stability across 15-year vehicle lifetimes under thermal and humidity stress. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump), improving clamping precision and reducing protected IC stress. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning - eliminates moisture-related popcorning risk during SMT assembly. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in enclosed automotive enclosures meeting OEM safety mandates. |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate drivers from load dump and inductive switching spikes in 12 V engine management systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input stage to clamp transients before they reach LDOs or logic interfaces. Use Value: Limits clamped voltage to 24.4 V during 1500 W surge, preventing latch-up or oxide breakdown in 3.3 V/5 V logic domains downstream. |
Use Scenario: Safeguarding PLC analog input channels and digital isolators from back-EMF surges generated by AC contactors and solenoids. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V sensor supply lines to absorb repetitive 10/1000 µs surges without degradation. Use Value: Maintains <1.0 µA leakage at 15 V standby, avoiding measurement drift in 16-bit ADC front-ends while surviving >100,000 surge events. |
| Automotive Body Electronics | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs from electrostatic discharge and cable coupling noise in door module assemblies. IC Role / Device Role / Timing Role: Localized TVS at connector entry point to divert ESD (IEC 61000-4-2 ±15 kV) and ISO 10605 pulses away from signal conditioning circuitry. Use Value: Responds in sub-nanosecond time with 24.4 V clamping, preserving signal integrity on 19.2 kbps LIN data lines without jitter or bit errors. |
Use Scenario: Protecting PoE-powered Ethernet switch ports from lightning-induced surges entering via RJ45 connectors. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input side of PD controller to absorb common-mode transients before DC-DC conversion. Use Value: Handles 61.5 A peak pulse current at 10/1000 µs with 75 °C/W thermal resistance, enabling compact layout without external heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Same VWM (15 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy surges (e.g., IEC 61000-4-5 Level 3); unsuitable for automotive load dump per ISO 7637-2. | Select when cost sensitivity outweighs surge robustness and board space allows larger thermal pad area. |
| SMCJ15AHE3/9AT | Same VWM (15 V), higher PPPM (1500 W), identical DO-215AB package, but rated for 10× longer surge duration (10/1000 µs vs. 8.3 ms IFSM focus) | Better suited for sustained overvoltage events like alternator load dump; same AEC-Q101 and HE3 suffix qualifications. | Prefer for new automotive designs requiring full ISO 7637-2 compliance where SMCG15AHE3/9AT's tighter VBR tolerance offers improved margin control. |
Compared with SMAJ15A-E3/57T and SMCJ15AHE3/9AT, the SMCG15AHE3/9AT delivers identical surge power rating to SMCJ15AHE3/9AT but with tighter VBR (±5.4% vs. ±6.7%) and lower clamping voltage (24.4 V vs. 25.5 V), enabling more precise protection margins in space-constrained layouts.
Availability
SMCG15AHE3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive inputs, and telecom power interface applications requiring stable component supply, AEC-Q101 assurance, and high-reliability transient suppression.
Supply support for SMCG15AHE3/9AT 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, and protection devices with emphasis on automotive, industrial, and computing markets.
The SMCG series was engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, balancing high surge capability, tight parametric tolerances, and surface-mount manufacturability.
FAQ
What is the clamping voltage of SMCG15AHE3/9AT at its rated peak pulse current?
The SMCG15AHE3/9AT has a maximum clamping voltage (VC) of 24.4 V at its peak pulse current (IPPM) of 61.5 A, measured under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 1500 W transient event and is critical for ensuring downstream ICs remain within their absolute maximum ratings. The SMCG15AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG15AHE3/9AT suitable for bidirectional transient protection?
No, SMCG15AHE3/9AT is a unidirectional TVS diode, indicated by the "A" suffix (as opposed to "CA" for bidirectional variants). Its cathode band marking and asymmetric IV curve require correct polarity placement - it conducts only when the cathode is at higher potential than the anode. For bidirectional protection, select SMCG15CAHE3/9AT, which provides symmetrical clamping in both directions and carries no polarity marking.
Does SMCG15AHE3/9AT meet automotive qualification standards?
Yes, SMCG15AHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's 88457 datasheet. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS applications where long-term reliability under thermal and electrical stress is mandatory.
What is the thermal resistance of SMCG15AHE3/9AT, and how does it affect PCB layout?
The SMCG15AHE3/9AT 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 specification - reducing pad size or omitting thermal vias increases RθJA, risking junction overheating during repeated surges. Layout must replicate the specified copper area to guarantee rated PPPM performance.
How does the SMCG15AHE3/9AT differ from SMAJ15A in terms of surge capability?
The SMCG15AHE3/9AT delivers 1500 W peak pulse power (PPPM) versus 400 W for SMAJ15A-E3/57T, due to its larger DO-215AB package and optimized chip design. This enables the SMCG15AHE3/9AT to withstand automotive load dump events (ISO 7637-2 Pulse 5) that would exceed SMAJ15A's energy handling. Additionally, SMCG15AHE3/9AT features lower clamping voltage (24.4 V vs. 29.2 V) and AEC-Q101 qualification - neither present in the SMAJ series.
SMCG15AHE3/9AT 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- 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)
SMCG15AHE3/9AT FAQ
1.How can I place an order for SMCG15AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15AHE3/9AT 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 SMCG15AHE3/9AT reliable?
The price and inventory of SMCG15AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG15AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG15AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15AHE3/9AT?
SMCG15AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15AHE3/9AT 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 SMCG15AHE3/9AT?
For technical support, including SMCG15AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15AHE3/9AT requirements.
6.How does Aetrix verify that SMCG15AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG15AHE3/9AT 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 SMCG15AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG15AHE3/9AT?
All SMCG15AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15AHE3/9AT, 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 SMCG15AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG15AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG15AHE3/9AT Tags
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