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Vishay General Semiconductor - Diodes Division SM6T100CAHM3_B/I
- Part No.:
- SM6T100CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHM3_B/I.pdf
- Description:
- 600W,100V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,287
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Product details
Overview
SM6T100CAHM3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM), 137 V clamping voltage (VC) at 4.4 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SM6T100CAHM3_B/I datasheet, SM6T100CAHM3_B/I pinout, SM6T100CAHM3_B/I application, or SM6T100CAHM3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (1.37×VWM), and SMB package compatibility with automated SMT assembly.
Technical Context
This device operates as a voltage-clamped bidirectional protector, leveraging avalanche breakdown across both polarities to limit transients without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the low-inductance SMB package supports fast response to sub-microsecond surges.
Designed for automotive-grade reliability, SM6T100CAHM3_B/I meets AEC-Q101 stress testing requirements and is qualified for operation from –65 °C to +150 °C junction temperature. Thermal resistance (RθJA = 100 °C/W) and 5.0 W steady-state power dissipation enable use on standard PCB copper pads without forced cooling.
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 - Breakdown occurs within this range at 1 mA test current, ensuring predictable turn-on |
| VC @ IPPM | 137 V at 4.4 A - Clamping voltage under 10/1000 μs surge, limiting protected circuit stress |
| PPPM | 600 W - Peak transient energy absorption capability, sufficient for ISO 7637-2 Pulse 1/2a/5a |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-ambient industrial settings |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with IPC-7351B standard, 0.220" × 0.130" body |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant - Meets automotive supply chain material and reliability mandates |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 rated compound. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity - enables bidirectional clamping without external orientation constraints |
| Case (body) | Non-electrical mechanical interface | No internal connection; provides thermal path to PCB copper and mechanical mounting stability |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands automotive load-dump and inductive switching transients per ISO 16750-2 and ISO 7637-2 |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime |
| Low clamping ratio (VC/VWM = 1.37) | Minimizes voltage overshoot during clamping, protecting downstream 100 V-rated components |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU ELV Directive and OEM sustainability requirements without compromising surge performance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and load dump in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector or IC input pins to shunt transients before they reach sensitive silicon. Use Value: Prevents latch-up or permanent damage in automotive-grade microcontrollers and transceivers operating up to 100 V system rails. | Use Scenario: Safeguarding digital and analog I/O channels of programmable logic controllers against field-induced surges from solenoid switching or lightning coupling. IC Role / Device Role / Timing Role: Primary front-end TVS element in modular I/O card designs, mounted adjacent to terminal blocks or connectors. Use Value: Maintains functional safety integrity by limiting transient voltages to ≤137 V, well below typical 250 V isolation barrier ratings. |
| Telecom Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding Ethernet PHY interfaces, RS-485 transceivers, and PoE-powered devices from induced surges on data lines. IC Role / Device Role / Timing Role: Secondary-level protection device used after gas discharge tube (GDT) primary stages in hybrid protection schemes. Use Value: Provides low-capacitance (<50 pF), fast-response clamping that preserves signal integrity up to 100 Mbps without distortion. | Use Scenario: Input-stage surge suppression in universal AC/DC adapters and USB-C PD chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor inputs to absorb differential-mode surges before rectification stage. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) without derating or parallel device stacking. |
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 | Same VWM (100 V), lower PPPM (400 W), SMA package (larger RθJA = 130 °C/W) | Limited to lower-energy transients; less suitable for automotive load-dump events | Select when cost sensitivity outweighs peak power margin and board space allows larger footprint |
| 1.5KE100CA | Higher PPPM (1500 W), axial leaded DO-201 package, not surface-mountable | Requires through-hole assembly; incompatible with automated SMT lines and compact PCB layouts | Choose only for legacy through-hole designs or where higher single-pulse energy handling is mandatory |
Compared with SMAJ100CA and 1.5KE100CA, SM6T100CAHM3_B/I delivers optimal balance of AEC-Q101 qualification, 600 W surge capacity, SMB footprint, and halogen-free compliance-making it the preferred choice for new automotive and industrial SMT designs requiring production scalability and regulatory alignment.
Availability
SM6T100CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom interface protection requiring stable component supply and full traceability.
Supply support for SM6T100CAHM3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping behavior and AEC-Q101 validation are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T100CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration: SM6T100CAHM3_B/I clamps transient voltages symmetrically in both polarities, making it suitable for AC-coupled or polarity-agnostic signal lines. Unlike unidirectional variants (e.g., SM6T100AHM3_B/I), it has no cathode marking and requires no orientation during placement.
Is SM6T100CAHM3_B/I qualified for automotive applications?
Yes, SM6T100CAHM3_B/I carries the HM3 suffix, confirming halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It undergoes stress testing for temperature cycling, humidity bias, and mechanical shock per automotive reliability standards, enabling use in engine control units and ADAS sensor modules.
What is the clamping voltage of SM6T100CAHM3_B/I under standard test conditions?
SM6T100CAHM3_B/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 per JEDEC standards and reflects worst-case voltage seen by protected circuitry during surge events.
How does the SMB package of SM6T100CAHM3_B/I compare to SMA in terms of thermal performance?
SM6T100CAHM3_B/I in SMB (DO-214AA) offers lower thermal resistance than SMA equivalents: RθJA = 100 °C/W versus ~130 °C/W for SMAJ-series devices. Its optimized pad layout and shorter internal leads improve heat transfer to PCB copper, supporting higher sustained power dissipation in compact layouts.
Can SM6T100CAHM3_B/I replace SM6T100A in a design?
No-SM6T100CAHM3_B/I is bidirectional while SM6T100A is unidirectional. Substituting them requires verifying circuit polarity tolerance: SM6T100A has a marked cathode and conducts only in reverse bias, whereas SM6T100CAHM3_B/I clamps equally in both directions. Layout changes may be needed to accommodate the absence of polarity marking.
SM6T100CAHM3_B/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:
- 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):
- 4.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T100CAHM3_B/I FAQ
1.How can I place an order for SM6T100CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHM3_B/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 SM6T100CAHM3_B/I reliable?
The price and inventory of SM6T100CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T100CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHM3_B/I?
SM6T100CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHM3_B/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 SM6T100CAHM3_B/I?
For technical support, including SM6T100CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHM3_B/I requirements.
6.How does Aetrix verify that SM6T100CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHM3_B/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 SM6T100CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T100CAHM3_B/I?
All SM6T100CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHM3_B/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 SM6T100CAHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T100CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CAHM3_B/I Tags
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