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Vishay General Semiconductor - Diodes Division SM6T100CA-M3/52
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- Part No.:
- SM6T100CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CA-M3/52.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
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Product details
Overview
SM6T100CA-M3/52 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 protects sensitive signal lines and power rails in automotive sensor interfaces and industrial control I/O against ESD and inductive switching transients.
For engineers reviewing the SM6T100CA-M3/52 datasheet, SM6T100CA-M3/52 pinout, SM6T100CA-M3/52 application, or SM6T100CA-M3/52 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.37), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical breakdown behavior in both polarities due to its bidirectional CA construction. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and repeatable clamping performance across temperature (–65 °C to +150 °C).
Designed for surface-mount placement on PCBs with minimum 5.0 mm × 5.0 mm copper pads per terminal, it delivers low-inductance transient response and meets J-STD-020 MSL Level 1 (260 °C peak reflow), enabling robust automated assembly in high-reliability applications.
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 - Breakdown occurs within this range at 1 mA test current, ensuring predictable turn-on |
| VC @ IPPM | 137 V @ 4.4 A - Clamping voltage under 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 600 W - Peak pulse power handling capability, defining transient energy absorption capacity |
| ID @ VWM | <1 μA - Reverse leakage at stand-off voltage, minimizing standby power loss and signal distortion |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 2.20 mm height and 5.59 mm length for compact layout |
| TJ max. | +150 °C - Maximum junction temperature, supporting operation in under-hood automotive environments |
Pinout & Package
SM6T100CA-M3/52 uses an SMB (DO-214AA) surface-mount package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts surge current when voltage exceeds +VBR; forms symmetrical clamp path with cathode |
| Cathode | Transient current entry (negative half-cycle) | Conducts surge current when voltage exceeds –VBR; completes bidirectional clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) with margin in typical PCB layouts |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 rating | Supports lead-free reflow without pre-baking, reducing manufacturing complexity and cost |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive and industrial end equipment |
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 load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS device that clamps transients before they reach interface ICs, preserving signal integrity and preventing latch-up. Use Value: With 137 V clamping at 4.4 A, it holds downstream voltage below 150 V during 100 V system-level surges, meeting AEC-Q100 stress limits. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed at connector entry point to divert >100 A surge currents away from isolation barriers and microcontrollers. Use Value: 600 W rating enables reliable suppression of 10/1000 μs transients up to 4.4 A without degradation over 10⁵ events. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485/RS-232 transceivers on base station backhaul cards from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end transient suppressor providing first-stage protection ahead of GDT or MOV secondary stages. Use Value: Low clamping ratio (1.37) minimizes voltage overshoot into protected ICs, reducing need for additional series impedance or filtering. | Use Scenario: Guarding microcontroller GPIOs and display driver lines in smart home hubs against ESD (IEC 61000-4-2 ±8 kV contact) and power rail coupling. IC Role / Device Role / Timing Role: Bidirectional ESD clamp integrated directly at connector or button trace to limit voltage excursion to <150 V. Use Value: Symmetric breakdown allows identical protection for push-button, encoder, and LED driver signals without orientation-dependent layout. |
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) and VC (137 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; less suitable for industrial 10/1000 μs surges requiring 600 W margin | Select SMAJ100CA only if board space is constrained and surge threat level is ≤Level 3 per IEC 61000-4-5 |
| SMCJ100CA | Higher PPPM (1500 W), same VWM/VC, larger SMC package (DO-214AB); higher IFSM (100 A vs. N/A for bidirectional) | Better suited for high-energy mains-connected equipment; requires larger pad layout and thermal relief | Choose SMCJ100CA when protecting AC/DC power inputs or motor drives where 1500 W clamping headroom is required |
Compared with SMAJ100CA and SMCJ100CA, SM6T100CA-M3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and halogen-free compliance-making it ideal for space-constrained automotive and industrial signal-line protection where mid-tier energy handling is sufficient.
Availability
SM6T100CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer appliance control boards requiring stable component supply and halogen-free compliance.
Supply support for SM6T100CA-M3/52 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 designed specifically for surface-mount transient suppression in automotive, industrial, and telecom systems-prioritizing low clamping ratio, bidirectional symmetry, and robust reflow survivability in high-volume manufacturing.
FAQ
What is the clamping voltage of SM6T100CA-M3/52 under a standard 10/1000 μs surge?
The SM6T100CA-M3/52 has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform at 4.4 A peak pulse current (IPPM). This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on protected circuits during transient events.
Is SM6T100CA-M3/52 suitable for automotive applications?
Yes, SM6T100CA-M3/52 is halogen-free and RoHS-compliant (M3 suffix), and its base family is AEC-Q101 qualified-available in HM3 variants. While SM6T100CA-M3/52 itself is commercial-grade, its electrical and thermal specs (–65 °C to +150 °C TJ, 600 W PPPM) meet core automotive transient protection requirements for sensor and body-control modules.
How does the bidirectional design of SM6T100CA-M3/52 affect its PCB layout?
The bidirectional construction of SM6T100CA-M3/52 eliminates polarity marking and allows orientation-agnostic placement on PCBs. Unlike unidirectional TVS diodes, SM6T100CA-M3/52 requires no cathode band alignment, simplifying automated assembly and reducing layout errors in differential or AC-coupled signal paths.
What is the thermal resistance of SM6T100CA-M3/52 from junction to ambient?
The typical junction-to-ambient thermal resistance (RθJA) of SM6T100CA-M3/52 is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and guides thermal derating above 25 °C ambient for sustained power dissipation.
Does SM6T100CA-M3/52 have a specified junction capacitance?
No, the Vishay SM6T datasheet (88385) does not specify junction capacitance (CJ) for SM6T100CA-M3/52. Capacitance data is provided only for lower-voltage variants (e.g., SM6T6V8A to SM6T39A) in Figure 4; SM6T100CA-M3/52 is omitted from that curve, indicating it is not characterized or guaranteed for high-frequency signal line use.
SM6T100CA-M3/52 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-M3/52 FAQ
1.How can I place an order for SM6T100CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CA-M3/52 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-M3/52 reliable?
The price and inventory of SM6T100CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T100CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CA-M3/52?
SM6T100CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CA-M3/52 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-M3/52?
For technical support, including SM6T100CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CA-M3/52 requirements.
6.How does Aetrix verify that SM6T100CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T100CA-M3/52 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-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T100CA-M3/52?
All SM6T100CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CA-M3/52, 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-M3/52 part is unused and in its original packaging.
Return procedure for SM6T100CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CA-M3/52 Tags
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