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Vishay General Semiconductor - Diodes Division SM15T100CAHM3_A/H
- Part No.:
- SM15T100CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100CAHM3_A/H.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
SM15T100CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 100 V standoff voltage (VWM), 137 V max clamping voltage at 11.0 A IPPM, and AEC-Q101 qualified for automotive use. It protects signal lines and power rails in sensor units and I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T100CAHM3_A/H datasheet, SM15T100CAHM3_A/H pinout, SM15T100CAHM3_A/H application, or SM15T100CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, 100 V VWM tolerance, 137 V VC under 11 A surge, AEC-Q101 qualification status, and SMC package thermal resistance (RθJA = 75 °C/W).
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 95.0–105 V) and clamping characteristics in either direction. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low inductance for fast response to sub-microsecond transients.
The device is designed for high-source-impedance circuits where peak pulse current remains within its 11.0 A IPPM rating under 10/1000 μs waveform. Failure mode is short-circuit under overstress, consistent with industrial and automotive system-level fault containment requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 95.0 / 105 V - guaranteed breakdown range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 137 V at 11.0 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak pulse power handling capability, enabling protection against lightning surges |
| TJ max. | +150 °C - maximum junction temperature, supporting under-hood automotive operation |
| Package | SMC (DO-214AB) - surface-mount package with 75 °C/W junction-to-ambient thermal resistance |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
SM15T100CAHM3_A/H uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, and 0.31" × 0.31" copper pad layout recommended for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 | Bidirectional conduction path - no polarity marking; symmetrical connection to protected line |
| Cathode | Terminal 2 | Bidirectional conduction path - no polarity marking; symmetrical connection to reference/ground |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) lightning surges on data/power lines |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage exposure to downstream ICs like CAN transceivers or ADC front-ends |
| AEC-Q101 qualification (HM3 suffix) | Validates reliability for automotive body electronics, infotainment, and ADAS sensor interfaces |
| Halogen-free, RoHS-compliant construction | Meets automotive OEM environmental compliance requirements and JEDEC JESD201 Class 2 whisker resistance |
| Low inductance SMC package | Reduces voltage overshoot during fast-rising transients (e.g., ESD or relay bounce) |
Applications
| Automotive Sensor Protection | Industrial I/O Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground, absorbing transient energy without disrupting DC bias. Use Value: Maintains signal integrity below 137 V during 11 A surges, preventing latch-up or damage to 5 V/12 V microcontrollers and analog front-ends. | Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring exposed to motor contactor switching and relay coil flyback. IC Role / Device Role / Timing Role: Transient shunt across input terminals, diverting surge current away from optocoupler inputs and protection resistors. Use Value: Limits voltage excursion to ≤137 V during 10/1000 μs transients, preserving isolation barrier integrity and enabling reliable 1 ms response time. |
| Telecom Power Rail Protection | Consumer Device USB/UART Interface |
Use Scenario: Clamping 48 V telecom power supply rails against lightning-induced surges entering via Ethernet or PSTN lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution, coordinated with upstream MOVs and gas discharge tubes. Use Value: Withstands 1500 W pulses while maintaining <1 μA leakage at 100 V, minimizing standby power loss in always-on systems. | Use Scenario: Protecting USB 2.0 D+/D− or UART TX/RX traces in smart home hubs from ESD and cable-induced transients. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ not specified but typical for SMC is <100 pF) placed adjacent to connector. Use Value: Provides 137 V clamping at 11 A without distorting 480 Mbps USB signals, verified by AEC-Q101 thermal cycling and HAST reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100CA | 600 W PPPM, SMA package, RθJA = 110 °C/W, same VWM/VC but lower surge rating | Not AEC-Q101 qualified; suitable only for commercial-grade consumer/industrial designs | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| SMCJ100CA | 1500 W PPPM, same SMC package, but HM3 suffix not standard - requires custom AEC-Q101 validation | Lacks documented AEC-Q101 qualification; may require additional qualification testing for automotive programs | Choose only if existing SMCJ-based BOMs allow requalification and lead-time permits validation |
Compared with SMAJ100CA and SMCJ100CA, SM15T100CAHM3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free construction, and guaranteed 100 V VWM tolerance - making it the only drop-in solution for Tier-1 automotive sensor interface designs requiring zero requalification.
Availability
SM15T100CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power distribution, and consumer USB/UART protection requiring stable component supply and long-term lifecycle support.
Supply support for SM15T100CAHM3_A/H 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, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, 1500 W surge handling, and bidirectional symmetry are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SM15T100CAHM3_A/H?
The "CA" suffix denotes a bidirectional configuration - meaning SM15T100CAHM3_A/H provides symmetrical clamping in both forward and reverse directions, unlike unidirectional variants ending in "A". This enables protection of AC-coupled or floating signal lines without polarity concerns, and eliminates the need for orientation-aware placement during automated assembly.
Is SM15T100CAHM3_A/H qualified to AEC-Q101, and what does the "HM3" suffix confirm?
Yes, SM15T100CAHM3_A/H is fully AEC-Q101 qualified, as confirmed by the "HM3" suffix: "H" indicates halogen-free construction, "M3" confirms RoHS compliance and AEC-Q101 qualification per Vishay's ordering nomenclature. This qualification covers temperature cycling, humidity testing, and mechanical shock - validating suitability for under-hood automotive applications.
What is the maximum clamping voltage of SM15T100CAHM3_A/H, and at what current is it specified?
The maximum clamping voltage (VC) of SM15T100CAHM3_A/H is 137 V, measured at a peak pulse current (IPPM) of 11.0 A using the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly informing system-level overvoltage margin calculations.
How does the SMC (DO-214AB) package of SM15T100CAHM3_A/H impact thermal performance?
The SMC package delivers a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" copper pads - significantly better than smaller packages like SMA (RθJA ≈ 110 °C/W). This allows SM15T100CAHM3_A/H to sustain higher average power dissipation in compact automotive and industrial layouts without active cooling.
Can SM15T100CAHM3_A/H replace unidirectional TVS diodes in existing designs?
No - SM15T100CAHM3_A/H is strictly bidirectional and must not replace unidirectional parts (e.g., SM15T100AHM3_A/H) without circuit review. Its symmetrical V-I curve lacks a defined cathode/anode polarity, so it cannot provide DC blocking or rectification. Substitution requires verifying that the protected node is truly floating or AC-coupled and that no DC bias path conflicts with bidirectional conduction.
SM15T100CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 11A
- 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 (SMC)
SM15T100CAHM3_A/H FAQ
1.How can I place an order for SM15T100CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100CAHM3_A/H 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 SM15T100CAHM3_A/H reliable?
The price and inventory of SM15T100CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T100CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T100CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100CAHM3_A/H?
SM15T100CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100CAHM3_A/H 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 SM15T100CAHM3_A/H?
For technical support, including SM15T100CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100CAHM3_A/H requirements.
6.How does Aetrix verify that SM15T100CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T100CAHM3_A/H 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 SM15T100CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T100CAHM3_A/H?
All SM15T100CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100CAHM3_A/H, 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 SM15T100CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM15T100CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100CAHM3_A/H Tags
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