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Vishay General Semiconductor - Diodes Division SM6T100A-E3/52
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- Part No.:
- SM6T100A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100A-E3/52.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,236
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Product details
Overview
SM6T100A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM = 85.5 V), 137 V clamping voltage at 4.4 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It protects MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T100A-E3/52 datasheet, SM6T100A-E3/52 pinout, SM6T100A-E3/52 application, or SM6T100A-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, and RoHS-compliant commercial-grade construction per J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a unidirectional clamping device, activating above its breakdown voltage (VBR min = 95.0 V, max = 105 V at 1 mA) to shunt transient energy away from protected circuitry. Its low-inductance SMB package and glass-passivated junction support fast response to ESD and lightning-induced surges.
Designed for single-pulse transient suppression-not continuous overvoltage-it exhibits 1.0 μA maximum reverse leakage at 85.5 V and derates linearly above 25 °C ambient per Fig. 2, with 150 °C maximum junction temperature and 100 A IFSM surge rating for 10 ms half-sine wave.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum steady-state reverse voltage before clamping begins; defines operating margin below breakdown |
| VBR (min/max) | 95.0 / 105 V at 1 mA - Confirmed breakdown range ensures reliable turn-on during transients |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - Clamping voltage limits stress on downstream ICs during standardized surge events |
| PPPM | 600 W - Peak pulse power handling capability for transient energy absorption without failure |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires PCB copper pad area ≥ 5.0 mm × 5.0 mm for rated power |
| Polarity | Unidirectional - Cathode marked by band; blocks forward conduction, clamps reverse transients only |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm max height; compatible with automated placement and reflow |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; cathode identified by black band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts only during forward bias (not used in clamping mode) |
| Cathode | Reverse clamping terminal | Marked by band; connected to higher-potential side; conducts avalanche current when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without thermal runaway |
| Glass passivated chip junction | Improves long-term reliability and stability of breakdown voltage under humidity and thermal cycling |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 1 ns rise time) |
| MSL level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or baking requirements |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU; suitable for non-automotive industrial and consumer applications |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus interface circuits in engine control modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches the transceiver IC's input pins. Use Value: Limits voltage seen by the transceiver to ≤137 V during 4.4 A 10/1000 μs surge, preserving signal integrity and preventing latch-up. | Use Scenario: Shielding analog input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff voltage (85.5 V) matches typical 24 V DC industrial supply rails with safety margin. Use Value: Prevents damage to precision op-amps and ADC front-ends during 600 W transient events without affecting normal 24 V operation. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side surge protection in AC/DC adapters subjected to conducted transients from mains coupling. IC Role / Device Role / Timing Role: Fast-clamping unidirectional suppressor placed across DC output terminals before filtering stage. Use Value: Clamps 137 V within 1 ns response time, protecting downstream DC-DC converters rated for ≤150 V input. | Use Scenario: Primary protection on Ethernet PHY interfaces exposed to lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-line defense before common-mode chokes and integrated magnetics. Use Value: Absorbs 600 W pulse energy while maintaining <1.0 μA leakage at 85.5 V, avoiding false triggering in idle state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A | Same VWM (85.5 V), identical SMB package, but lower PPPM (400 W) and higher VC (150 V @ 4.0 A) | Limited to lower-energy transients; not recommended where full 600 W compliance is required (e.g., ISO 7637-2 Pulse 5a) | Select SMAJ100A only if system-level testing confirms 400 W suffices and layout allows tighter clamping margin |
| SMCJ100A | Higher PPPM (1500 W), same VWM, but larger SMC (DO-214AB) package (4.57 mm width vs. 3.94 mm) | Requires PCB footprint revision; better for high-reliability automotive systems needing extended surge margin | Choose SMCJ100A when board space permits and 1500 W rating is mandated by end-equipment standards |
Compared with SMAJ100A and SMCJ100A, SM6T100A-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and 137 V clamping-making it ideal for space-constrained industrial and automotive modules where full DO-214AA compliance and RoHS E3 grading are required.
Availability
SM6T100A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, and telecom line card designs requiring stable component supply, RoHS-compliant commercial-grade TVS devices, and consistent SMB (DO-214AA) packaging.
Supply support for SM6T100A-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, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The SM6T Series is designed specifically for surface-mount transient voltage suppression in harsh environments-targeting automotive, industrial, and telecom applications where compact size, high pulse power, and AEC-Q101 readiness (in HE3 variants) are critical.
FAQ
What is the clamping voltage of SM6T100A-E3/52 under a 10/1000 μs surge?
The SM6T100A-E3/52 has a maximum clamping voltage (VC) of 137 V at 4.4 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 88385) and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SM6T100A-E3/52 maintains this clamping performance across its specified operating temperature range when mounted per recommended pad layout.
Is SM6T100A-E3/52 suitable for automotive applications?
The SM6T100A-E3/52 is RoHS-compliant and qualified to commercial-grade specifications (E3 suffix), not AEC-Q101. For automotive use, Vishay offers the SM6T100AHE3 variant (with HE3 suffix), which adds AEC-Q101 qualification. The SM6T100A-E3/52 itself is intended for industrial, consumer, and telecom applications where automotive qualification is not mandated. Always verify end-equipment compliance requirements before selecting SM6T100A-E3/52.
What does the "-E3/52" suffix indicate in SM6T100A-E3/52?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/52" specifies packaging in 7-inch diameter plastic tape and reel with a base quantity of 750 units. This ordering code aligns with Vishay's standard delivery format for SMB devices and ensures compatibility with automated SMT assembly lines using standard 8 mm tape feeders.
How does SM6T100A-E3/52 differ from bidirectional TVS diodes like SM6T100CA?
The SM6T100A-E3/52 is unidirectional and features a cathode band marking; it clamps only reverse-voltage transients and blocks forward current. In contrast, SM6T100CA is bidirectional (no polarity marking) and clamps transients of either polarity, making it suitable for AC signal lines or differential buses. The SM6T100A-E3/52's unidirectional design yields lower leakage and sharper knee characteristics for DC rail protection.
What is the thermal resistance of SM6T100A-E3/52, and how does it affect layout?
The SM6T100A-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. To sustain rated power dissipation, PCB layout must provide adequate copper area and avoid excessive trace length or isolation. Reducing pad size or adding thermal vias alters RθJA and requires derating per Figure 2 in the Vishay datasheet for SM6T100A-E3/52.
SM6T100A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SM6T100A-E3/52 FAQ
1.How can I place an order for SM6T100A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100A-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 SM6T100A-E3/52 reliable?
The price and inventory of SM6T100A-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 SM6T100A-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T100A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100A-E3/52?
SM6T100A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100A-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 SM6T100A-E3/52?
For technical support, including SM6T100A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100A-E3/52 requirements.
6.How does Aetrix verify that SM6T100A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T100A-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 SM6T100A-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T100A-E3/52?
All SM6T100A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100A-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 SM6T100A-E3/52 part is unused and in its original packaging.
Return procedure for SM6T100A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100A-E3/52 Tags
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