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Vishay General Semiconductor - Diodes Division 1.5SMC100A-M3/9AT
- Part No.:
- 1.5SMC100A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC100A-M3/9AT.pdf
- Description:
- TVS DIODE 85.5VWM 137VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
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Product details
Overview
1.5SMC100A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 100 V breakdown voltage (VBR = 95–105 V at 1 mA), 85.5 V maximum stand-off voltage (VWM), clamps transients to ≤137 V at 10.9 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive power supplies.
For engineers reviewing the 1.5SMC100A-M3/9AT datasheet, 1.5SMC100A-M3/9AT pinout, 1.5SMC100A-M3/9AT application, or 1.5SMC100A-M3/9AT equivalent, key selection criteria include its unidirectional polarity, SMC (DO-214AB) package compatibility, 150 °C max junction temperature, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification readiness for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM (85.5 V) and rapidly avalanches above VBR (95–105 V) to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the low incremental surge resistance enables effective suppression of fast-rising ESD and lightning-induced surges.
The device uses a single-junction avalanche structure optimized for repetitive 10/1000 µs pulses at 0.01% duty cycle. Thermal performance is defined by RθJA = 75 °C/W (on recommended 8 mm × 8 mm copper pads) and RθJL = 15 °C/W, supporting reliable operation up to TJ = 150 °C without derating under typical PCB layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 95.0 V / 105 V at IT = 1 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 85.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤137 V at 10.9 A - clamping voltage during 1500 W transient, limiting downstream stress on protected ICs |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity suitable for IEC 61000-4-5 Level 4 compliance |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction during fault events |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end; terminals are anode and cathode (unidirectional polarity).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; enables unidirectional clamping from cathode to anode |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential side (e.g., VCC rail); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity testing up to 4 kV (line-earth) without external heatsinking |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime |
| Halogen-free, RoHS-compliant (M3) | Meets IPC-1752A material declaration requirements and automotive ELV directive compliance |
| AEC-Q101 qualified option | Available as HM3 variant - validated for automotive powertrain and body electronics applications |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp positive-going surges before they reach LDOs or microcontrollers. Use Value: Clamps 100 V transients to ≤137 V within nanoseconds, preserving system uptime and preventing latch-up in downstream logic. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or from signal to ground to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 ns response time and <1 µA leakage at 85.5 V ensure signal integrity is maintained during normal operation and transient events. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY power rails and data lines in PoE-powered switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input bus, coordinated with secondary-side MOVs and GDTs in multi-stage protection architecture. Use Value: 1500 W rating and 137 V clamping enable coordination with 600 V-rated isolation transformers and reduce let-through energy to <100 mJ. |
Use Scenario: Overvoltage suppression on AC-DC adapter primary-side rectified output before bulk capacitor and PWM controller. IC Role / Device Role / Timing Role: Unidirectional clamping device shunting surge energy from rectifier output to ground during brownout recovery or mains switching events. Use Value: 200 A IFSM rating handles repetitive inrush surges; halogen-free M3 construction supports global eco-regulatory compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A-E3/52T | Lower PPPM (600 W), same VWM/VBR, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤1 kV (1.2/50 µs) |
| 1.5KE100A-T | Through-hole DO-201 package, identical electrical specs but higher mounting thermal resistance and no MSL 1 rating | Requires wave soldering; unsuitable for fully SMT production or high-reliability automotive reflow processes | Choose only for legacy through-hole designs or prototyping where manual assembly is acceptable |
Compared with SMBJ100A-E3/52T and 1.5KE100A-T, the 1.5SMC100A-M3/9AT provides superior surge handling in a compact, reflow-compatible SMC package with halogen-free compliance - making it the preferred choice for high-volume automotive and industrial SMT production requiring AEC-Q101 readiness.
Availability
1.5SMC100A-M3/9AT is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC100A-M3/9AT 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 reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification are critical design requirements.
FAQ
What is the maximum clamping voltage of the 1.5SMC100A-M3/9AT under peak pulse conditions?
The 1.5SMC100A-M3/9AT has a maximum clamping voltage (VC) of 137 V when subjected to its rated peak pulse current of 10.9 A using a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events, ensuring safe operation of 100 V-rated components.
Is the 1.5SMC100A-M3/9AT suitable for automotive applications?
Yes - the 1.5SMC100A-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and the 1.5SMC100A-HM3/9AT variant is explicitly AEC-Q101 qualified. While the base 1.5SMC100A-M3/9AT shares identical electrical and thermal specifications, its qualification path aligns with automotive-grade reliability standards when ordered with HM3 suffix and appropriate revision code.
What does the "M3" suffix indicate in 1.5SMC100A-M3/9AT?
The "M3" suffix in 1.5SMC100A-M3/9AT denotes halogen-free, RoHS-compliant construction meeting IPC-1752A material declarations and JEDEC J-STD-020 MSL Level 1 moisture sensitivity requirements. It also confirms compliance with Vishay's whisker resistance Class 2 per JESD 201, making it suitable for high-reliability surface-mount assembly.
How does the 1.5SMC100A-M3/9AT differ from bidirectional variants like 1.5SMC100CA?
The 1.5SMC100A-M3/9AT is unidirectional and features a cathode band marking; it conducts only in reverse avalanche mode and blocks forward current beyond ~3.5 V. In contrast, 1.5SMC100CA is bidirectional with symmetrical clamping in both polarities and no polarity marking - making it suitable for AC lines or differential data paths where polarity reversal occurs.
What is the thermal resistance from junction to ambient for the 1.5SMC100A-M3/9AT?
The 1.5SMC100A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value assumes still air conditions and is critical for calculating allowable power dissipation at elevated ambient temperatures per Figure 2 in datasheet 88303.
1.5SMC100A-M3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC100A-M3/9AT FAQ
1.How can I place an order for 1.5SMC100A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC100A-M3/9AT 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 1.5SMC100A-M3/9AT reliable?
The price and inventory of 1.5SMC100A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC100A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC100A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC100A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC100A-M3/9AT?
1.5SMC100A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC100A-M3/9AT 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 1.5SMC100A-M3/9AT?
For technical support, including 1.5SMC100A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC100A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC100A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC100A-M3/9AT 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 1.5SMC100A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC100A-M3/9AT?
All 1.5SMC100A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC100A-M3/9AT, 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 1.5SMC100A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC100A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC100A-M3/9AT Tags
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