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Vishay General Semiconductor - Diodes Division SM6T100AHM3_A/I
- Part No.:
- SM6T100AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100AHM3_A/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,657
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Product details
Overview
SM6T100AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, with 100 V standoff voltage (VWM), 137 V clamping voltage (VC) at 4.4 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and sensor signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SM6T100AHM3_A/I datasheet, SM6T100AHM3_A/I pinout, SM6T100AHM3_A/I application, or SM6T100AHM3_A/I equivalent, key selection criteria include clamping performance at rated IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its breakdown threshold (VBR = 95–105 V). Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low inductance for fast transient response.
Designed for mounting on 5.0 mm × 5.0 mm copper pads per terminal, it delivers specified 600 W pulse power only under that thermal condition and derates linearly above TA = 25 °C per Figure 2. Junction temperature must remain ≤150 °C during operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 95.0 / 105 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 137 V at 4.4 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 600 W - peak transient power dissipation capability under standardized waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, measured on 5.0 mm × 5.0 mm Cu pads |
| TJ max. | +150 °C - absolute maximum junction temperature, constraining sustained power handling |
| ID @ VWM | ≤1 μA - reverse leakage at standoff voltage, critical for low-power sensor line protection |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side reference in unidirectional TVS configuration |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., CAN_H, LIN, or MCU I/O); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust suppression of ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualification | Validated for use in automotive powertrain, body control, and ADAS modules requiring reliability certification |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., load dump edge rates >100 V/μs) |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying SMT assembly |
Applications
| Automotive Powertrain Control | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate drivers in engine control units exposed to alternator load dump and solenoid coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient overvoltage on 5 V or 12 V supply rails and signal lines. Use Value: Limits clamped voltage to 137 V, preventing latch-up or oxide rupture in 3.3 V/5 V logic interfaces downstream. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor placed at connector entry point before signal conditioning circuitry. Use Value: Maintains <1 μA leakage at 85.5 V, avoiding DC error in precision 4–20 mA loop receivers. |
| Automotive Body Electronics | Telecom Line Interface |
Use Scenario: Shielding LIN bus transceivers and door module MCUs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary board-level ESD clamp on bidirectional LIN line (used in unidirectional configuration with pull-up). Use Value: Achieves 137 V clamping at 4.4 A, meeting ISO 10605 30 kV air discharge immunity targets. | Use Scenario: Protecting Ethernet PHY interface pins in industrial gateways from induced surges on PoE or data lines. IC Role / Device Role / Timing Role: Secondary surge protection stage after gas discharge tube (GDT), absorbing residual energy. Use Value: 600 W rating handles 10/1000 μs surges up to 4.4 A without degradation, extending system MTBF. |
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-E3/5B | Same SMB package, 100 V VWM, but lower PPPM (400 W), higher VC (156 V at 3.8 A) | Lacks AEC-Q101 qualification; not approved for automotive safety-critical modules | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable |
| 1.5SMC100A | Higher power (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs, no AEC-Q101 | Requires PCB redesign due to 7.11 mm × 6.22 mm footprint vs. SMB's 4.57 mm × 3.94 mm | Choose for industrial systems needing higher surge margin where board space allows larger package |
Compared with SMAJ100A-E3/5B and 1.5SMC100A, SM6T100AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMB footprint with 600 W capability-making it optimal for space-constrained automotive ECUs requiring certified reliability.
Availability
SM6T100AHM3_A/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial sensor interface protection, and telecom line interface applications requiring stable component supply across multi-year production cycles.
Supply support for SM6T100AHM3_A/I 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 high-reliability industrial and automotive applications.
The SM6T Series was developed specifically for surface-mount transient suppression in automotive and industrial environments where AEC-Q101 qualification, low-profile packaging, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SM6T100AHM3_A/I at its rated peak pulse current?
The SM6T100AHM3_A/I has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs transient waveform at its rated peak pulse current of 4.4 A. This value is measured under standard test conditions with 5.0 mm × 5.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM6T100AHM3_A/I qualified for automotive applications?
Yes, SM6T100AHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's SM6T series datasheet (Document Number: 88385, Revision: 09-Jan-2024). This qualification validates its reliability for use in automotive powertrain, body electronics, and ADAS systems under defined temperature, humidity, and lifetime stress conditions.
What does the "HM3" suffix indicate in SM6T100AHM3_A/I?
The "HM3" suffix in SM6T100AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "A/I" further specifies tape-and-reel packaging in 13-inch reels (base quantity 3200 units), per Vishay's ordering nomenclature in the SM6T datasheet.
What is the maximum operating junction temperature for SM6T100AHM3_A/I?
The maximum operating junction temperature (TJ max.) for SM6T100AHM3_A/I is +150 °C, as specified in the Absolute Maximum Ratings table of the official Vishay SM6T datasheet. This limit governs thermal design margins and requires appropriate PCB copper area and ambient conditions to avoid exceeding TJ during repetitive surge events.
How does SM6T100AHM3_A/I differ from bidirectional variants like SM6T100CA?
SM6T100AHM3_A/I is unidirectional, with polarity marked by a cathode band and intended for DC-biased lines (e.g., power rails, single-ended signals). In contrast, SM6T100CA is bidirectional, lacks polarity marking, and suppresses transients in both directions-suitable for AC-coupled or differential lines like RS-485. Their VWM, VBR, and VC values differ accordingly.
SM6T100AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 4.4A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SM6T100AHM3_A/I FAQ
1.How can I place an order for SM6T100AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100AHM3_A/I 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 SM6T100AHM3_A/I reliable?
The price and inventory of SM6T100AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T100AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100AHM3_A/I?
SM6T100AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100AHM3_A/I 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 SM6T100AHM3_A/I?
For technical support, including SM6T100AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100AHM3_A/I requirements.
6.How does Aetrix verify that SM6T100AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T100AHM3_A/I 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 SM6T100AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T100AHM3_A/I?
All SM6T100AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100AHM3_A/I, 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 SM6T100AHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T100AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100AHM3_A/I Tags
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