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Vishay General Semiconductor - Diodes Division SM6T100CAHM3/H
- Part No.:
- SM6T100CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHM3/H.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,513
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Product details
Overview
SM6T100CAHM3/H 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 (IPPM), and 600 W peak pulse power (10/1000 μs). It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T100CAHM3/H datasheet, SM6T100CAHM3/H pinout, SM6T100CAHM3/H application, or SM6T100CAHM3/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (1.37×VWM), and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix designation, with breakdown voltage (VBR) of 114–126 V (min/max at 1 mA IT) and reverse leakage ID ≤1 μA at 100 V VWM. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive transients.
The device is optimized for fast transient suppression (tR < 1 ns typical), low inductance packaging, and compatibility with automated SMT assembly. It meets MSL Level 1 per J-STD-020 and supports peak forward surge current (IFSM) up to 100 A for unidirectional variants - not applicable here due to bidirectional polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 114 V / 126 V at 1 mA - defines precise avalanche onset threshold in both directions |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - clamping voltage limits downstream IC stress during surge events |
| PPPM | 600 W - peak transient energy absorption capability under standardized waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with IPC-7351B standard pad layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); UL 94 V-0 rated molding compound; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (direction-agnostic) | One terminal of symmetrical PN junction; accepts surge current from either polarity |
| Cathode | Transient current exit (direction-agnostic) | Second terminal of symmetrical PN junction; completes low-impedance clamp path to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 4 transients on 12 V systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor modules |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20 MSL Level 1 reflow profile (260 °C peak) |
| Low clamping ratio (VC/VWM = 1.37) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio alternatives |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control units against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within nanoseconds to transients exceeding 100 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs while maintaining signal integrity during normal operation. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation controllers exposed to EFT bursts and electrostatic discharge in harsh plant environments. IC Role / Device Role / Timing Role: Symmetric transient suppressor connected across bus pair, limiting common-mode and differential surges to safe levels. Use Value: Ensures uninterrupted CAN communication during 4 kV ESD contact discharge and 2 kV EFT events per IEC 61000-4-4. |
| Consumer Power Adapter Input | Telecom DC Power Rail |
Use Scenario: Input-stage surge protection for USB-C PD adapters and wireless charging base stations subjected to AC line transients and lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC output, absorbing energy before it reaches DC-DC regulators and USB controllers. Use Value: Maintains adapter certification (UL 62368-1) by limiting transient overshoot to <140 V on 20 V output rails. | Use Scenario: Overvoltage protection on +48 V telecom power distribution boards feeding remote radio units and optical line terminals. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between power rail and chassis ground to shunt induced lightning surges (IEC 61000-4-5 10/700 μs). Use Value: Limits rail collapse to <150 V during 2 kA surge events, preserving uptime of critical infrastructure equipment. |
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 = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive under-hood use due to thermal derating | Select when cost sensitivity outweighs peak power margin and board space allows larger footprint |
| 1.5KE100CA | Higher PPPM (1500 W), axial DO-201 package, non-SMD, slower response due to lead inductance | Requires through-hole assembly; unsuitable for high-density PCBs or automated SMT lines | Choose only for legacy designs or prototyping where manual assembly is acceptable and surge energy exceeds 600 W |
Compared with SMAJ100CA and 1.5KE100CA, SM6T100CAHM3/H delivers optimal balance of compact SMB packaging, AEC-Q101 qualification, 600 W surge handling, and halogen-free compliance - making it preferred for new automotive and industrial SMT designs requiring production scalability and regulatory alignment.
Availability
SM6T100CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer power adapters, and telecom DC power rails requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SM6T100CAHM3/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 SM6T Series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - delivering consistent clamping performance, AEC-Q101 validation, and SMT-ready packaging for demanding real-world surge environments.
FAQ
What does the "CA" suffix indicate in SM6T100CAHM3/H?
The "CA" suffix in SM6T100CAHM3/H denotes a bidirectional configuration, meaning the device functions identically in both polarities - ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, or floating power domains. Unlike unidirectional variants (e.g., SM6T100AHM3/H), SM6T100CAHM3/H has no cathode marking and exhibits matched breakdown and clamping characteristics in either direction.
Is SM6T100CAHM3/H qualified for automotive applications?
Yes, SM6T100CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, and AEC-Q101 certified). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its use in automotive powertrain, body electronics, and ADAS sensor modules per industry requirements.
What is the clamping voltage of SM6T100CAHM3/H at its rated peak pulse current?
The clamping voltage (VC) of SM6T100CAHM3/H is 137 V when subjected to a 10/1000 μs waveform at 4.4 A peak pulse current (IPPM), as specified in Vishay's datasheet Document Number 88385. This value reflects the maximum voltage seen across the device during surge conduction and directly determines the protection level afforded to downstream circuitry.
How does the SMB (DO-214AA) package of SM6T100CAHM3/H compare thermally to larger packages?
SM6T100CAHM3/H in SMB (DO-214AA) package has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. While larger packages like DO-214AB (SMC) offer lower RθJA (~60 °C/W), the SMB footprint provides optimal density and reflow compatibility for high-volume automotive PCBs where thermal management is achieved via board-level copper area rather than package size.
Can SM6T100CAHM3/H replace SM6T100A in an existing design?
No - SM6T100CAHM3/H is bidirectional, whereas SM6T100AHM3/H is unidirectional. Substituting them requires verifying circuit polarity: SM6T100CAHM3/H may be used only where symmetrical clamping is needed (e.g., across differential pairs or AC signals); using it in place of a unidirectional part on a DC rail could cause unintended conduction. Always validate layout, grounding, and system-level surge paths before replacement.
SM6T100CAHM3/H 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:
- -
- 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:
- -
- 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/H FAQ
1.How can I place an order for SM6T100CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHM3/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 SM6T100CAHM3/H reliable?
The price and inventory of SM6T100CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CAHM3/H is usually 5 days.
3.What payment methods are accepted for SM6T100CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHM3/H?
SM6T100CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHM3/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 SM6T100CAHM3/H?
For technical support, including SM6T100CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHM3/H requirements.
6.How does Aetrix verify that SM6T100CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHM3/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 SM6T100CAHM3/H meets industry standards.
7.What is the process for return or replacement of SM6T100CAHM3/H?
All SM6T100CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHM3/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 SM6T100CAHM3/H part is unused and in its original packaging.
Return procedure for SM6T100CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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