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Vishay General Semiconductor - Diodes Division SM6T100AHM3/I
- Part No.:
- SM6T100AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100AHM3/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,891
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Product details
Overview
SM6T100AHM3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM), 137 V clamping voltage at 4.4 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It features glass passivated junction, AEC-Q101 qualification, and is used to protect automotive sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SM6T100AHM3/I datasheet, SM6T100AHM3/I pinout, SM6T100AHM3/I application, or SM6T100AHM3/I equivalent, key selection criteria include unidirectional polarity, 100 V VWM, 137 V VC @ 4.4 A, AEC-Q101 qualification status, and SMB package thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds its breakdown threshold (VBR = 95–105 V). Its low-inductance SMB package and glass-passivated junction enable fast response (<1 ns) to ESD and surge events.
Designed for automotive-grade reliability, SM6T100AHM3/I meets JESD201 Class 2 whisker resistance, MSL Level 1 (260 °C reflow), and supports operation from −65 °C to +150 °C junction temperature. It is not intended for continuous forward conduction - IFSM rating applies only to non-repetitive 10 ms half-sine surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 95.0 V / 105 V at 1.0 mA - ensures predictable turn-on within tight tolerance band |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - defines worst-case voltage seen by protected IC during surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads |
| TJ max | +150 °C - maximum allowable junction temperature for reliable long-term operation |
| Polarity | Unidirectional - cathode marked with band; blocks forward current, clamps reverse transients |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return plane in clamping configuration |
| Cathode | Reverse voltage sensing / Clamping output node | Connected to protected line (e.g., sensor output); band marking identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use, including engine control, ADAS sensors, and body modules |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients from load dump or inductive kick without degradation |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs during surge events |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without preconditioning |
| Glass passivated chip junction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of ABS wheel speed sensors exposed to alternator ripple and relay-induced spikes. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤137 V, preventing latch-up or damage to 5 V-tolerant ADC inputs while maintaining signal integrity. | Use Scenario: Safeguarding high-side gate driver ICs in 24 V DC motor controllers subjected to back-EMF during rapid PWM switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across gate-source terminals of N-channel MOSFET drivers. Use Value: Clamps negative-going gate voltage excursions below −0.7 V and positive overshoots to ≤137 V, preserving driver IC integrity. |
| Telecom Line Interface Protection | Consumer Power Supply Input Stage |
Use Scenario: Shielding RS-485 transceivers in outdoor base stations from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SM6T100AHM3/I used in unidirectional configuration on VCC-supplied side of isolated interface. Use Value: Absorbs up to 600 W of coupled surge energy while holding rail voltage within safe margin of 12 V LDO regulator input. | Use Scenario: Secondary-side overvoltage suppression in 12 V wall adapters powering smart home hubs with USB-C PD negotiation circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V output rail to prevent damage from feedback loop instability or Zener failure in primary controller. Use Value: Activates at ≥95 V breakdown, ensuring no false triggering during normal 12.5 V load-dump transients while clamping catastrophic failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 @ 3.8 A) | Lacks AEC-Q101 qualification; rated for commercial, not automotive, temperature range | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable |
| 1.5SMC100A | Higher package thermal mass (SMC), same VWM, but 1500 W PPPM and 165 V VC @ 9.1 A | Not AEC-Q101 qualified; larger footprint incompatible with space-constrained PCB layouts | Choose for industrial power supplies needing higher surge margin where board area permits SMC package |
Compared with SMAJ100A-E3/5B and 1.5SMC100A, SM6T100AHM3/I delivers automotive-grade reliability in minimal SMB area with tighter clamping (137 V vs. 156/165 V) and optimized thermal performance (RθJA = 100 °C/W), making it preferred for safety-critical signal-line protection.
Availability
SM6T100AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate protection, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and consistent SMB package form factor.
Supply support for SM6T100AHM3/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 reliability, precision, and application-specific optimization.
The SM6T Series is designed specifically for robust transient suppression in automotive, industrial, and communications systems where compact size, high surge capability, and AEC-Q101 qualification are mandatory.
FAQ
What is the breakdown voltage range for SM6T100AHM3/I?
The SM6T100AHM3/I has a guaranteed breakdown voltage (VBR) range of 95.0 V to 105 V at 1.0 mA test current, measured per JEDEC standards. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design margins in automotive ECUs and industrial controllers using the SM6T100AHM3/I.
Is SM6T100AHM3/I suitable for bidirectional transient protection?
No, SM6T100AHM3/I is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SM6T100CA). Using SM6T100AHM3/I in bidirectional configurations risks forward conduction damage during negative transients, so correct polarity orientation is essential in all designs using SM6T100AHM3/I.
Does SM6T100AHM3/I meet automotive qualification standards?
Yes, SM6T100AHM3/I carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It is tested for temperature cycling, humidity bias, mechanical shock, and ESD per AEC-Q101 Rev D, making it approved for use in automotive powertrain, chassis, and ADAS subsystems where SM6T100AHM3/I is deployed.
What is the maximum clamping voltage of SM6T100AHM3/I under surge conditions?
The SM6T100AHM3/I exhibits a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at 4.4 A peak pulse current. This value is measured under standardized test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events involving SM6T100AHM3/I.
Can SM6T100AHM3/I be used in place of SM6T100A-E3/52?
SM6T100AHM3/I and SM6T100A-E3/52 share identical electrical specs and SMB package, but differ in qualification and material content: SM6T100AHM3/I is halogen-free and AEC-Q101 qualified, whereas SM6T100A-E3/52 is RoHS-compliant commercial grade only. Substitution requires validation of automotive compliance requirements - SM6T100AHM3/I is not a drop-in replacement unless AEC-Q101 is mandated for the application using SM6T100AHM3/I.
SM6T100AHM3/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:
- 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):
- 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/I FAQ
1.How can I place an order for SM6T100AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100AHM3/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/I reliable?
The price and inventory of SM6T100AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SM6T100AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100AHM3/I?
SM6T100AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100AHM3/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/I?
For technical support, including SM6T100AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100AHM3/I requirements.
6.How does Aetrix verify that SM6T100AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6T100AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SM6T100AHM3/I?
All SM6T100AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100AHM3/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/I part is unused and in its original packaging.
Return procedure for SM6T100AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100AHM3/I Tags
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