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Vishay General Semiconductor - Diodes Division SM6T200A-E3/5B
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- Part No.:
- SM6T200A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T200A-E3/5B.pdf
- Description:
- TVS DIODE 171VWM 274VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
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Product details
Overview
SM6T200A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 200 V standoff voltage (VWM = 171 V), 210 V minimum breakdown (VBR), 274 V maximum clamping voltage at 2.2 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs and sensor signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SM6T200A-E3/5B datasheet, SM6T200A-E3/5B pinout, SM6T200A-E3/5B application, or SM6T200A-E3/5B equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, and SMB footprint compatibility with automated SMT placement.
Technical Context
This TVS operates as a shunt-clamping device triggered by reverse-biased avalanche breakdown above VBR. Its low-inductance SMB package and glass-passivated junction enable fast response (<1 ns) to ESD and surge events while sustaining 100 A non-repetitive forward surge current (IFSM).
Clamping performance is specified under standardized 10/1000 μs and 8/20 μs waveforms, with derating applied above TA = 25 °C per thermal curves. Junction temperature range spans −65 °C to +150 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 190 V - Minimum breakdown voltage at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 274 V at 2.2 A - Clamped voltage during 10/1000 μs surge; must stay below protected device's max rating |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; determines surge energy absorption |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for thermal design margin |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band at one end; anode at opposite end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path for clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced popcorning or delamination |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, load dump edge) |
| AEC-Q101 qualified option available | HE3/HM3 variants meet stress test requirements for automotive electronic modules |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Suppressing load dump transients on 12 V supply rails feeding engine control unit (ECU) microcontrollers and CAN transceivers. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between battery rail and ground, activated within nanoseconds of overvoltage event. Use Value: Limits rail voltage to ≤274 V during 100 ms, 35 V load dump, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Protecting gate drivers and current-sense amplifiers from flyback spikes generated by IGBTs in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional clamp across DC bus or gate drive supply, absorbing inductive kick energy. Use Value: Clamps 600 V spikes to <274 V within <1 ns, preserving gate oxide integrity and avoiding false triggering of protection circuits. |
| Telecom Line Interface | Consumer Sensor Signal Conditioning |
Use Scenario: Guarding RS-485 transceivers and PHY ICs against lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair inputs, coordinated with secondary GDT or polymer PTC. Use Value: Absorbs up to 600 W (10/1000 μs) without degradation, maintaining signal integrity and meeting ITU-T K.21 basic protection level. | Use Scenario: Shielding analog outputs of MEMS pressure sensors in HVAC controllers from ESD events during handling or field operation. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) unidirectional clamp on 3.3 V output line referenced to local ground. Use Value: Prevents sensor output saturation or internal latch-up during ±8 kV contact discharge, with no signal distortion due to low leakage (<1 μA at 171 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ200A-E3/57T | Same VWM/VBR/VC ratings; SMA package (DO-214AC), RθJA = 110 °C/W, lower PPPM = 400 W | Lower surge capability limits use in high-energy automotive load dump; better suited for consumer-grade I/O protection | Select when board space allows larger SMA footprint and surge energy demand is ≤400 W |
| 1.5SMC200A | Same electrical specs; SMC package (DO-214AB), RθJA = 85 °C/W, PPPM = 1500 W, higher IFSM = 200 A | Higher power handling supports industrial 24/48 V systems with longer-duration surges; requires larger PCB pad area | Choose for 24 V rail protection where thermal margin and energy absorption exceed SMB limits |
Compared with SMAJ200A-E3/57T and 1.5SMC200A, SM6T200A-E3/5B delivers optimal balance of 600 W surge capacity, SMB footprint compatibility with high-density automotive PCBs, and AEC-Q101-ready variants-making it preferred for space-constrained 12 V ECU designs requiring validated automotive reliability.
Availability
SM6T200A-E3/5B is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, telecom line interface, and consumer sensor signal conditioning requiring stable component supply and RoHS-compliant commercial-grade TVS diodes.
Supply support for SM6T200A-E3/5B 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive-grade qualification.
The SM6T Series is designed specifically for surface-mount transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where compact size, high surge robustness, and consistent clamping performance are critical.
FAQ
What is the clamping voltage of SM6T200A-E3/5B under a 10/1000 μs surge?
The SM6T200A-E3/5B has a maximum clamping voltage (VC) of 274 V at 2.2 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and defines the upper voltage limit imposed on the protected circuit during standardized surge testing. The SM6T200A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SM6T200A-E3/5B AEC-Q101 qualified?
No, SM6T200A-E3/5B is the commercial-grade RoHS-compliant variant. AEC-Q101 qualification is available only in the HE3 or HM3 suffix versions (e.g., SM6T200AHE3_B/I). The SM6T200A-E3/5B meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements but does not undergo the full AEC-Q101 stress test sequence.
What is the thermal resistance of SM6T200A-E3/5B, and how does it affect layout?
The SM6T200A-E3/5B 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 maintain safe junction temperatures under repeated surges, PCB layout must replicate this minimum pad area and avoid thermal isolation. Reducing pad size increases RθJA and risks exceeding the +150 °C TJ max during high-duty-cycle transients.
How does SM6T200A-E3/5B differ from bidirectional variants like SM6T200CA?
The SM6T200A-E3/5B is unidirectional and features a cathode band for polarity identification; it conducts only in reverse bias above VBR. In contrast, SM6T200CA is bidirectional, lacks polarity marking, and clamps symmetrically in both directions. Use SM6T200A-E3/5B for DC rail protection where polarity is fixed; choose SM6T200CA for AC-coupled or floating signal lines such as RS-485 differential pairs.
What is the maximum reverse leakage current of SM6T200A-E3/5B at its standoff voltage?
At its maximum standoff voltage (VWM = 171 V), the SM6T200A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at TA = 25 °C. This low leakage ensures minimal power loss and avoids interference with high-impedance sensing circuits. Leakage increases with temperature but remains below 10 μA up to +85 °C per datasheet characterization.
SM6T200A-E3/5B 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 274V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
SM6T200A-E3/5B FAQ
1.How can I place an order for SM6T200A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T200A-E3/5B 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 SM6T200A-E3/5B reliable?
The price and inventory of SM6T200A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T200A-E3/5B is usually 5 days.
3.What payment methods are accepted for SM6T200A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T200A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T200A-E3/5B?
SM6T200A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T200A-E3/5B 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 SM6T200A-E3/5B?
For technical support, including SM6T200A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T200A-E3/5B requirements.
6.How does Aetrix verify that SM6T200A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T200A-E3/5B 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 SM6T200A-E3/5B meets industry standards.
7.What is the process for return or replacement of SM6T200A-E3/5B?
All SM6T200A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T200A-E3/5B, 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 SM6T200A-E3/5B part is unused and in its original packaging.
Return procedure for SM6T200A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T200A-E3/5B Tags
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