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Vishay General Semiconductor - Diodes Division SM6T100CA-M3/5B
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- Part No.:
- SM6T100CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CA-M3/5B.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,936
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Product details
Overview
SM6T100CA-M3/5B 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 max clamping voltage (VC) at 4.4 A IPPM, and 600 W peak pulse power with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T100CA-M3/5B datasheet, SM6T100CA-M3/5B pinout, SM6T100CA-M3/5B application, or SM6T100CA-M3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMB package thermal data, and AEC-Q101–qualified alternatives for automotive-grade surge protection design.
Technical Context
The SM6T100CA-M3/5B operates as a symmetrical bidirectional TVS, with identical breakdown (VBR min = 95.0 V, max = 105 V) and clamping characteristics in both polarities. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low dynamic impedance under transient stress.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads, and delivers 100 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads - enabling robust thermal performance in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 95.0 V / 105 V - guaranteed breakdown threshold range at 1 mA test current |
| VC @ IPPM | 137 V at 4.4 A - clamping voltage during 10/1000 μs transient, limiting downstream voltage stress |
| PPPM | 600 W - peak pulse power handling capability per IEC 61000-4-5 waveform |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance enables derating calculations for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. No polarity marking - bidirectional symmetry eliminates orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional clamping behavior - either terminal serves as input or return path |
| Case (cathode band absent) | Mechanical reference / thermal path | No functional polarity; case provides mechanical anchoring and contributes to thermal dissipation via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in automotive load-dump and inductive switch-off events |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure to protected ICs without sacrificing response speed |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking, reducing manufacturing overhead |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for global automotive and industrial markets |
| 150 °C max junction temperature rating | Supports reliable operation in high-ambient environments such as engine control modules |
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 ISO 7637-2 pulses and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface or IC pin. Use Value: Limits transient voltage to ≤137 V while maintaining <1 μA leakage at 100 V, preserving signal integrity and system uptime. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-induced surges and ground bounce. IC Role / Device Role / Timing Role: Fast-response TVS shunting energy away from microcontroller GPIOs and optocoupler drivers. Use Value: 600 W pulse rating handles repetitive 1 kV/500 A transients per IEC 61000-4-5, extending field reliability. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails and data line terminations. IC Role / Device Role / Timing Role: Low-inductance bidirectional clamp minimizing ringing during fast-rising transients. Use Value: SMB footprint enables dense layout near connectors; 100 °C/W RθJA supports thermal management without heatsinks. | Use Scenario: Input-stage transient suppression in AC-DC adapters and USB PD power bricks exposed to mains-borne surges. IC Role / Device Role / Timing Role: Primary clamping device across bulk capacitor or bridge rectifier outputs. Use Value: 100 V VWM aligns with 12 V–24 V DC output rails; halogen-free M3 construction satisfies UL/IEC safety standards. |
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 | Lower PPPM (400 W), same VWM (100 V), SMA package (higher RθJA = 140 °C/W) | Less robust for repeated high-energy transients; limited thermal margin in confined spaces | Select when cost sensitivity outweighs pulse power headroom and board space allows larger thermal pad |
| SMCJ100CA | Higher PPPM (1500 W), same VWM (100 V), SMC package (lower RθJA = 50 °C/W), larger footprint | Better suited for primary-side surge protection where space permits and higher energy handling is required | Choose for front-end protection in harsh environments where 600 W is insufficient and PCB area allows SMC outline |
Compared with SMAJ100CA and SMCJ100CA, the SM6T100CA-M3/5B delivers optimal balance of 600 W pulse capability, SMB footprint density, and AEC-Q101 qualification - making it ideal for space-constrained, automotive-grade secondary-side protection where thermal and reliability margins must be tightly controlled.
Availability
SM6T100CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply and halogen-free compliance.
Supply support for SM6T100CA-M3/5B 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 automotive, industrial, and telecom systems - delivering consistent clamping behavior, AEC-Q101 qualification, and optimized thermal performance in compact SMB packages.
FAQ
What is the clamping voltage of the SM6T100CA-M3/5B under a 10/1000 μs transient?
The SM6T100CA-M3/5B has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at an IPPM of 4.4 A. This value is measured per standard test conditions in the Vishay datasheet (Doc. #88385, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T100CA-M3/5B maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is the SM6T100CA-M3/5B qualified for automotive applications?
Yes, the SM6T100CA-M3/5B is halogen-free and RoHS-compliant (M3 suffix), and the SM6T family offers AEC-Q101–qualified variants. While the -M3/5B suffix itself denotes commercial-grade halogen-free construction, the base SM6T100CA is available in AEC-Q101 versions (e.g., SM6T100CAHM3_B/I). For automotive use, confirm ordering code suffixes containing "HM3" or "HE3" to ensure qualification. The SM6T100CA-M3/5B shares identical electrical specs and SMB package with qualified variants.
What is the standoff voltage (VWM) and why does it matter for SM6T100CA-M3/5B?
The SM6T100CA-M3/5B has a standoff voltage (VWM) of 100 V - the maximum DC or RMS voltage the device can withstand continuously without entering avalanche conduction. This parameter ensures minimal leakage (<1 μA) during normal operation while allowing rapid clamping above this threshold. For the SM6T100CA-M3/5B, VWM selection matches 12 V–24 V automotive and industrial bus voltages, preventing false triggering while ensuring robust transient response.
How does the SMB (DO-214AA) package of SM6T100CA-M3/5B affect thermal performance?
The SMB package of the SM6T100CA-M3/5B provides a thermal resistance of 100 °C/W (junction-to-ambient) when mounted on 0.2" × 0.2" copper pads - enabling effective heat dissipation without external heatsinks. Its low-profile geometry supports automated placement and high-density PCB layouts. Compared to larger packages like SMC, the SMB trade-off is higher RθJA, but the SM6T100CA-M3/5B's 600 W rating remains viable for short-duration transients typical in secondary-side protection.
Can SM6T100CA-M3/5B replace unidirectional TVS diodes in existing designs?
No - the SM6T100CA-M3/5B is strictly bidirectional and lacks polarity marking, so it cannot substitute for unidirectional TVS diodes (e.g., SM6T100A) in circuits requiring DC blocking or asymmetric clamping. Unidirectional devices have defined cathode/anode roles and higher forward surge ratings (e.g., IFSM = 100 A). Using SM6T100CA-M3/5B in place of a unidirectional part may compromise forward conduction behavior or violate biasing requirements. Always verify circuit topology before substitution.
SM6T100CA-M3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T100CA-M3/5B FAQ
1.How can I place an order for SM6T100CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CA-M3/5B 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 SM6T100CA-M3/5B reliable?
The price and inventory of SM6T100CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SM6T100CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CA-M3/5B?
SM6T100CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CA-M3/5B 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 SM6T100CA-M3/5B?
For technical support, including SM6T100CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CA-M3/5B requirements.
6.How does Aetrix verify that SM6T100CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T100CA-M3/5B 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 SM6T100CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SM6T100CA-M3/5B?
All SM6T100CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CA-M3/5B, 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 SM6T100CA-M3/5B part is unused and in its original packaging.
Return procedure for SM6T100CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CA-M3/5B Tags
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