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Vishay General Semiconductor - Diodes Division SMCG150AHE3/9AT
- Part No.:
- SMCG150AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG150AHE3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,380
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Product details
Overview
SMCG150AHE3/9AT 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 a 150 V standoff voltage (VWM), 167–185 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 µs. It delivers clamping voltage of 243 V at rated IPPM and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMCG150AHE3/9AT datasheet, SMCG150AHE3/9AT pinout, SMCG150AHE3/9AT application, or SMCG150AHE3/9AT equivalent, this device is selected for robust overvoltage immunity in DC power rails, sensor interfaces, and MOSFET gate protection where fast response (<1 ns), low clamping ratio, and automotive-grade reliability are required.
Technical Context
This TVS operates as a silicon avalanche diode with glass-passivated junction, optimized for unidirectional clamping in DC-biased circuits. Its 150 V stand-off voltage allows stable operation up to 150 V DC, while maintaining <1.0 µA reverse leakage at VWM - critical for low-power sensor supply lines.
The device uses a DO-215AB surface-mount package with matte tin-plated leads, rated MSL Level 1 (260 °C reflow), and achieves thermal resistance RθJA = 75 °C/W on 8.0 mm × 8.0 mm copper pads. Its 200 A IFSM rating supports single-event surge handling without degradation under 8.3 ms half-sine wave stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping begins; defines upper limit for protected circuit DC bias. |
| VBR (min/max) | 167 V / 185 V at 1.0 mA - guaranteed avalanche onset range; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 243 V - clamped voltage during 1500 W 10/1000 µs surge; determines worst-case voltage seen by downstream ICs. |
| PPPM | 1500 W - peak pulse power handling per standard 10/1000 µs waveform; validates protection level against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at full stand-off voltage; preserves battery life and signal integrity in always-on systems. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - certified for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD. |
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); RoHS-compliant, AEC-Q101 qualified, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to circuit ground or return path; carries surge current during clamping event. |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 12 V rail); blocks reverse current until VBR exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates moisture-induced parameter drift in humid environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients; improves clamping precision for sensitive 3.3 V/5 V logic interfaces. |
| Fast response time (<1 ns) | Activates before most IC damage thresholds are reached; protects against ESD and lightning-induced edges. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002/JESD 22-B102; prevents whisker growth (JESD 201 Class 2). |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for automotive cabin and industrial control panel compliance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and bulk capacitor to clamp surges above 150 V. Use Value: Withstands 1500 W pulses and maintains <1 µA leakage, preventing quiescent current drain in always-on modules. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O cards. IC Role / Device Role / Timing Role: Standoff-rated TVS on 4–20 mA loop or 0–10 V output line to absorb field-wiring induced spikes. Use Value: 243 V clamping voltage limits fault voltage seen by ADC front-end, preserving measurement accuracy and isolation integrity. |
| DC Motor Drive Gate Protection | Telecom DC Power Input Protection |
Use Scenario: Shielding N-channel MOSFET gates from inductive kickback during PWM switching in BLDC drivers. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp negative-going transients below -20 V. Use Value: Fast <1 ns response prevents gate oxide rupture; 150 V VWM avoids false triggering during normal gate drive swing. | Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail to clamp positive surges relative to system ground. Use Value: AEC-Q101 qualification ensures long-term reliability in 24/7 infrastructure; 75 °C/W RθJA supports conduction cooling in dense chassis layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/57T | Same VWM (150 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Limited to lower-energy surges; less suitable for automotive load dump or industrial 4 kV IEC 61000-4-5 testing | Select when cost or board space is prioritized over 1500 W surge capability and thermal performance. |
| SMCJ150AHE3/9AT | Same VWM (150 V), identical PPPM (1500 W), but SMC (DO-214AB) package with larger footprint and higher IFSM (400 A) | Better suited for high-reliability industrial power supplies requiring >200 A surge margin and enhanced thermal mass | Choose when PCB layout allows larger 7.11 mm × 6.22 mm footprint and higher single-pulse surge headroom is needed. |
Compared with SMAJ150A-E3/57T and SMCJ150AHE3/9AT, SMCG150AHE3/9AT provides optimal balance of 1500 W surge rating, compact DO-215AB footprint, and AEC-Q101 qualification - making it preferred for space-constrained automotive modules where thermal resistance (75 °C/W) and reliability certification are decisive.
Availability
SMCG150AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution units, industrial sensor transmitters, and telecom DC input stages requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for SMCG150AHE3/9AT 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, automotive qualification, and high-volume manufacturability.
The SMCG series is engineered for surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 validation, low leakage, and precise clamping are mandatory.
FAQ
What is the clamping voltage of SMCG150AHE3/9AT at its rated peak pulse current?
The SMCG150AHE3/9AT has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the specified IPPM derived from its 1500 W PPPM rating and confirms the device's ability to limit transient voltage to a safe level for downstream components. The SMCG150AHE3/9AT data sheet specifies this VC value with test conditions fully aligned to ANSI/IEEE C62.35.
Is SMCG150AHE3/9AT suitable for bidirectional surge protection?
No, SMCG150AHE3/9AT is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in its part number. It conducts only in reverse breakdown (cathode-to-anode) and blocks forward current. For bidirectional protection, Vishay offers the SMCG150CA variant. Using SMCG150AHE3/9AT in AC-coupled or floating applications without proper DC bias may result in unintended conduction or inadequate protection.
What does the "HE3" suffix signify in SMCG150AHE3/9AT?
The "HE3" suffix in SMCG150AHE3/9AT indicates RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It distinguishes this grade from industrial-only variants (e.g., "E3") and halogen-free versions (e.g., "HM3"). The SMCG150AHE3/9AT is specifically intended for automotive and high-reliability industrial use where both environmental compliance and stress-test validation are required.
How does the thermal resistance of SMCG150AHE3/9AT affect its derating in real-world PCB layouts?
The SMCG150AHE3/9AT has a typical RθJA of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. In layouts with smaller pads or no internal copper planes, RθJA increases significantly - reducing allowable power dissipation. Derating curves in the SMCG150AHE3/9AT datasheet show >50% PPPM loss at TJ = 100 °C; thus, thermal design must ensure junction temperature remains ≤125 °C during repeated surges to maintain reliability and clamping performance.
Can SMCG150AHE3/9AT replace older P6KE150A in existing designs?
SMCG150AHE3/9AT is not a direct drop-in replacement for through-hole P6KE150A due to package (DO-215AB vs. DO-15), mounting method, and thermal profile. While both share VWM = 150 V and similar VBR, the SMCG150AHE3/9AT offers superior surge rating (1500 W vs. 600 W), lower leakage (<1 µA vs. 5 µA), and AEC-Q101 qualification. Layout redesign and thermal validation are required; however, the SMCG150AHE3/9AT delivers measurable improvement in modern automotive and industrial applications.
SMCG150AHE3/9AT 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
SMCG150AHE3/9AT FAQ
1.How can I place an order for SMCG150AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG150AHE3/9AT 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 SMCG150AHE3/9AT reliable?
The price and inventory of SMCG150AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG150AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG150AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG150AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG150AHE3/9AT?
SMCG150AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG150AHE3/9AT 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 SMCG150AHE3/9AT?
For technical support, including SMCG150AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG150AHE3/9AT requirements.
6.How does Aetrix verify that SMCG150AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG150AHE3/9AT 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 SMCG150AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG150AHE3/9AT?
All SMCG150AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG150AHE3/9AT, 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 SMCG150AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG150AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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