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Vishay General Semiconductor - Diodes Division SM6T100CA-E3/52
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- Part No.:
- SM6T100CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CA-E3/52.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,290
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Product details
Overview
SM6T100CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 100 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 4.4 A IPPM, 600 W peak pulse power (10/1000 μs), and operates from −65 °C to +150 °C junction temperature. It is used to protect MOSFETs and sensor signal lines in automotive ECUs against inductive switching surges.
For engineers reviewing the SM6T100CA-E3/52 datasheet, SM6T100CA-E3/52 pinout, SM6T100CA-E3/52 application, or SM6T100CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, SMB package compatibility with automated SMT placement, AEC-Q101 qualification status, and thermal resistance (RθJA = 100 °C/W) under standard pad layout conditions.
Technical Context
The SM6T100CA-E3/52 uses a glass-passivated silicon junction optimized for low-inductance transient suppression. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, supporting protection of AC-coupled or differential signal paths.
It delivers 600 W peak pulse power per the 10/1000 μs waveform standard, with clamping performance validated at 4.4 A IPPM and 137 V VC. Thermal design relies on 0.2" × 0.2" copper pads per terminal to sustain 5.0 W steady-state dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 95.0 V / 105 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - Clamped voltage during surge; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - Peak transient energy handling capacity; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" pads; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; supports unlimited exposure to ambient humidity prior to reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode | Bidirectional terminals | No functional distinction - symmetric conduction in both directions; either end connects to protected line or ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against high-energy transients common in 12 V/24 V automotive power nets. |
| Low inductance construction | Minimizes voltage overshoot during fast-rising transients (e.g., >1 kV/μs), improving clamping fidelity. |
| Glass passivated chip junction | Ensures long-term reliability and stable electrical parameters under thermal cycling and humidity exposure. |
| AEC-Q101 qualified option available | HE3/HM3 variants meet automotive stress-test requirements; SM6T100CA-E3/52 is commercial-grade but shares identical die and package. |
| MSL Level 1, LF peak 260 °C | Supports standard lead-free reflow profiles without baking or special handling. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver bias lines from load-dump and inductive kickback in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and chassis ground to limit transient overvoltage. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces when exposed to ISO 7637-2 Pulse 5a (75 V/300 ms). |
Use Scenario: Shielding 24 V DC digital input channels from relay coil flyback and field-wiring ESD events in factory automation controllers. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt surge current away from optocoupler input stage. Use Value: Maintains signal integrity by limiting transient voltage to ≤137 V, well below optocoupler breakdown rating (typically ≥200 V). |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding MCU reset and communication lines on washing machine mainboard exposed to brush motor commutation noise. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed directly at connector entry point before EMI filter. Use Value: Clamps sub-microsecond spikes (<100 ns rise time) without distorting 100 kHz UART signals due to minimal parasitic capacitance. |
Use Scenario: Secondary-side transient suppression on 48 V telecom rectifier output feeding PoE PSE controllers. IC Role / Device Role / Timing Role: Overvoltage clamp between +48 V rail and return, sized to absorb IEC 61000-4-5 Combination Wave (2 Ω/12 Ω) surges. Use Value: Limits rail excursion to 137 V during 4 kV surge, preventing overvoltage shutdown of downstream DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Same SMB package, 100 V VWM, but 600 W PPPM achieved at higher IPPM (6.4 A) and higher VC (156 V). | Higher clamping voltage reduces margin for 100 V-rated downstream ICs; better suited where peak current exceeds 4.4 A. | Select SMBJ100CA only if system-level testing confirms 156 V clamping is acceptable and surge current exceeds 4.4 A. |
| 1.5KE100CA | Through-hole DO-201 package, same 100 V VWM and 137 V VC, but 1500 W PPPM (10/1000 μs) and larger footprint. | Not suitable for space-constrained SMT designs; requires wave soldering or hand assembly; higher thermal mass slows response slightly. | Choose 1.5KE100CA only for legacy through-hole boards or where >600 W surge energy must be absorbed without parallel devices. |
Compared with SMBJ100CA and 1.5KE100CA, the SM6T100CA-E3/52 offers optimal balance of low-profile SMT compatibility, precise 137 V clamping, and sufficient 600 W surge rating for most automotive and industrial signal-line protection needs - without requiring PCB redesign or sacrificing board density.
Availability
SM6T100CA-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, consumer appliance control boards, and telecom power supply designs requiring stable component supply and RoHS-compliant sourcing.
Supply support for SM6T100CA-E3/52 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 and automotive qualification.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 compliance are critical.
FAQ
What is the clamping voltage of the SM6T100CA-E3/52 under standard test conditions?
The SM6T100CA-E3/52 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 JEDEC standards and reflects worst-case voltage seen by protected circuitry during surge events. The SM6T100CA-E3/52 maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C) with appropriate derating.
Is the SM6T100CA-E3/52 suitable for automotive applications?
The SM6T100CA-E3/52 is RoHS-compliant and built on the same die and package as AEC-Q101-qualified variants (e.g., SM6T100CAHE3). While the -E3/52 suffix denotes commercial grade, its construction - including glass passivation, MSL Level 1 rating, and 150 °C TJ max - meets core automotive environmental requirements. For production automotive use, specify HE3 or HM3 suffixes to ensure full AEC-Q101 certification documentation.
What does the "CA" suffix indicate in SM6T100CA-E3/52?
The "CA" suffix in SM6T100CA-E3/52 explicitly denotes a bidirectional configuration. Unlike unidirectional variants (e.g., SM6T100A), the CA version provides symmetrical clamping in both forward and reverse directions, making it ideal for protecting AC-coupled lines, differential buses (e.g., RS-485), or circuits where polarity cannot be guaranteed. No cathode band marking is present on the SMB package.
What is the thermal resistance of the SM6T100CA-E3/52, and how does it affect layout?
The SM6T100CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB material and no internal plane layers. To maintain safe junction temperatures, designers must follow Vishay's recommended pad layout and avoid excessive trace length or narrow traces that increase thermal impedance. The SM6T100CA-E3/52 is not intended for continuous power dissipation above 5.0 W.
How does the SM6T100CA-E3/52 compare to unidirectional TVS diodes in circuit protection?
The SM6T100CA-E3/52 eliminates polarity dependency, simplifying layout and eliminating risk of incorrect orientation during assembly - unlike unidirectional SM6T100A, which requires strict cathode alignment. Its bidirectional behavior ensures protection regardless of transient polarity, critical for data lines and floating references. However, unidirectional versions offer lower leakage at VWM and slightly tighter VBR tolerance; the SM6T100CA-E3/52 trades minor leakage for universal installation and dual-polarity robustness.
SM6T100CA-E3/52 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-E3/52 FAQ
1.How can I place an order for SM6T100CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CA-E3/52 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-E3/52 reliable?
The price and inventory of SM6T100CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T100CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CA-E3/52?
SM6T100CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CA-E3/52 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-E3/52?
For technical support, including SM6T100CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CA-E3/52 requirements.
6.How does Aetrix verify that SM6T100CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T100CA-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T100CA-E3/52?
All SM6T100CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CA-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SM6T100CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CA-E3/52 Tags
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