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Vishay General Semiconductor - Diodes Division 1.5SMC100AHE3/9AT
- Part No.:
- 1.5SMC100AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC100AHE3/9AT.pdf
- Description:
- TVS DIODE 85.5VWM 137VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,884
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Product details
Overview
1.5SMC100AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 100 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 10.9 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive ECUs, industrial motor drives, and telecom interface circuits.
For engineers reviewing the 1.5SMC100AHE3/9AT datasheet, 1.5SMC100AHE3/9AT pinout, 1.5SMC100AHE3/9AT application, or 1.5SMC100AHE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMC) package thermal performance, unidirectional polarity with cathode band marking, and compliance with UL 497B for surge protector classification.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds its breakdown threshold (VBR = 95–105 V at 1 mA). Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O against ESD and lightning-induced transients.
Thermally, it delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient and exhibits RθJA = 75 °C/W and RθJL = 15 °C/W - enabling reliable operation up to TJ = 150 °C. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 85.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (Breakdown) | 95–105 V at 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping) | 137 V at IPPM = 10.9 A - Limits downstream voltage stress during 10/1000 μs surges, protecting 100 V-rated components. |
| PPPM | 1500 W - Peak pulse power handling capacity under standardized surge waveform; supports IEC 61000-4-5 Level 4 immunity. |
| IPPM | 10.9 A - Peak pulse current capability directly tied to clamping voltage; enables coordination with upstream fuses or PTCs. |
| TJ max. | 150 °C - Maximum junction temperature rating allows use in under-hood automotive environments and enclosed industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for automated placement and thermal pad layout. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or low-side return path; defines reference for clamping action during positive transients. |
| Cathode | Clamping output / Surge sink node | Connected to protected line (e.g., 12 V rail or CAN_H); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails per stress test requirements. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (1.2/50 μs voltage, 8/20 μs current) without degradation across 0.01% duty cycle. |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term parameter stability under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive gate drivers and ADC inputs. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 85.5 V while maintaining low leakage during normal operation. Use Value: Clamps to ≤137 V within nanoseconds, preventing damage to PMICs and microcontrollers rated for 100 V absolute maximum. |
Use Scenario: Safeguarding encoder feedback lines and analog sensor inputs in variable-frequency drives exposed to switching noise and ground bounce. IC Role / Device Role / Timing Role: Standoff protection element on differential signal pairs (e.g., RS-485, resolver outputs) to absorb common-mode transients without distorting signal integrity. Use Value: Low capacitance (<100 pF typical at 0 V) avoids signal edge degradation; fast response preserves timing-critical position feedback accuracy. |
| Telecom Interface Surge Suppression | Consumer Power Adapter Input Stage |
|
Use Scenario: Front-end protection for PoE-powered Ethernet switches and base station RF modules subjected to lightning-induced surges on DC bias lines. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input rails, coordinated with GDT or MOV for staged energy diversion. Use Value: 1500 W rating handles multi-kA surge events; UL 497B recognition validates compliance for telecom safety certification. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs and IoT gateways after rectification and bulk capacitor filtering. IC Role / Device Role / Timing Role: Final-stage transient limiter on regulated 5 V/12 V outputs to prevent latch-up in connected USB peripherals or Wi-Fi SoCs. Use Value: Tight VBR tolerance (±5%) ensures consistent clamping onset; RoHS + halogen-free (HE3) meets global environmental compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/57T | Same VWM/VC, but SMA package (smaller footprint, higher RθJA = 110 °C/W); lower PPPM = 400 W. | Limited to lower-energy transients (IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 or lightning-level surges. | Select when board space is constrained and surge energy is <50 mJ; verify thermal derating at elevated ambient temperatures. |
| 1.5KE100A | Through-hole DO-201 package; identical electrical specs but no AEC-Q101 qualification; higher VC = 143 V at same IPPM. | Not approved for automotive use; requires manual assembly; less suitable for high-volume automated production. | Choose for prototyping or cost-sensitive industrial designs where AEC-Q101 is not mandated and PCB real estate permits axial leads. |
Compared with SMAJ100A-E3/57T and 1.5KE100A, the 1.5SMC100AHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capability in surface-mount form, and UL 497B recognition - making it the preferred choice for production automotive and telecom infrastructure designs requiring certified reliability and high-energy clamping.
Availability
1.5SMC100AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor control systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC100AHE3/9AT 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and communications systems where robustness, AEC-Q101 compliance, and standardized surge immunity are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC100AHE3/9AT under a 10/1000 μs surge?
The 1.5SMC100AHE3/9AT has a maximum clamping voltage (VC) of 137 V at 10.9 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC100AHE3/9AT maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC100AHE3/9AT qualified for automotive applications?
Yes, the 1.5SMC100AHE3/9AT carries the HE3 suffix, which denotes RoHS-compliant construction and full AEC-Q101 qualification per Vishay's ordering nomenclature. It is validated for use in automotive powertrain, chassis, and body electronics where transient immunity to load dump and ISO 7637-2 pulses is required. The 1.5SMC100AHE3/9AT meets all stress tests including temperature cycling, HTRB, and surge life.
What does the "9AT" suffix indicate in 1.5SMC100AHE3/9AT?
The "9AT" suffix specifies the packaging configuration: 13-inch diameter plastic tape and reel, with a standard quantity of 3500 units per reel. This format is optimized for high-volume SMT assembly lines using pick-and-place equipment. The "HE3" portion confirms AEC-Q101 qualification and RoHS compliance, while "100A" designates the 100 V standoff voltage grade. The 1.5SMC100AHE3/9AT is not compatible with smaller reels like 7-inch "57T" variants without process adjustment.
How does the 1.5SMC100AHE3/9AT compare to bidirectional TVS diodes like 1.5SMC100CA?
The 1.5SMC100AHE3/9AT is unidirectional and features a cathode band for polarity identification, whereas 1.5SMC100CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The 1.5SMC100AHE3/9AT offers tighter leakage control (<1 μA at VWM) and is preferred for DC power rail protection; the CA variant suits AC-coupled or differential signal lines. Their VC and PPPM ratings differ due to internal structure - the 1.5SMC100AHE3/9AT clamps at 137 V, while 1.5SMC100CA clamps at 152 V.
What is the thermal resistance of the 1.5SMC100AHE3/9AT, and how does it affect layout?
The 1.5SMC100AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under 6.5 W steady-state dissipation, PCB layout must provide adequate copper area and thermal vias - undersized pads will cause excessive temperature rise and premature failure. The 1.5SMC100AHE3/9AT datasheet recommends minimum pad dimensions matching the DO-214AB outline.
1.5SMC100AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 10.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC100AHE3/9AT FAQ
1.How can I place an order for 1.5SMC100AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC100AHE3/9AT 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 1.5SMC100AHE3/9AT reliable?
The price and inventory of 1.5SMC100AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC100AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC100AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC100AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC100AHE3/9AT?
1.5SMC100AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC100AHE3/9AT 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 1.5SMC100AHE3/9AT?
For technical support, including 1.5SMC100AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC100AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC100AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC100AHE3/9AT 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 1.5SMC100AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC100AHE3/9AT?
All 1.5SMC100AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC100AHE3/9AT, 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 1.5SMC100AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC100AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC100AHE3/9AT Tags
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