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Vishay General Semiconductor - Diodes Division SM6T200AHM3/H
- Part No.:
- SM6T200AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T200AHM3/H.pdf
- Description:
- TVS DIODE 171VWM 274VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,809
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Product details
Overview
SM6T200AHM3/H 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), 274 V clamping voltage at 2.2 A (10/1000 μs), 600 W peak pulse power, and AEC-Q101 qualified for automotive applications such as engine control unit protection against load dump transients.
For engineers reviewing the SM6T200AHM3/H datasheet, SM6T200AHM3/H pinout, SM6T200AHM3/H application, or SM6T200AHM3/H equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, halogen-free RoHS compliance, low-inductance SMB package, and verified automotive qualification per AEC-Q101.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, responding to fast-rising transients (e.g., ISO 7637-2 pulse 5a) by entering avalanche breakdown before downstream components are stressed. Its glass-passivated junction ensures stable VBR (190–210 V) and low leakage (<1 μA at 171 V).
The SMB package enables automated placement and provides thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It supports single-pulse surge handling up to 100 A (IFSM) and maintains clamping performance across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 171 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 190 V / 210 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 274 V at 2.2 A (10/1000 μs) - clamping voltage limits downstream voltage stress during surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized 10/1000 μs waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount outline with 2.2 mm height, optimized for PCB space and thermal pad layout |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; terminals solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Completes conduction path during transient clamp; must be routed with low-inductance trace to minimize overshoot |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line | Defines polarity-must be placed between protected node and ground to enable unidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust suppression of ISO 7637-2 load dump pulses without degradation over rated lifetime |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive environmental standards and eliminates corrosive halogen emissions during reflow or failure |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-induced popcorn failure |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (e.g., EFT bursts), improving effective clamping speed |
Applications
| Engine Control Unit Protection | Automotive Infotainment Power Rail |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply inputs in engine control units from alternator load dump transients (up to 120 V surge). IC Role / Device Role: Unidirectional TVS placed between 12 V rail and chassis ground to clamp surges before they reach LDOs and MCUs. Use Value: Clamps 274 V at 2.2 A, limiting voltage seen by downstream ICs to safe levels while surviving repeated 600 W pulses. | Use Scenario: Shields USB-C power delivery and display interface lines in head units from ESD and cable discharge events. IC Role / Device Role: Secondary-level TVS on 5 V/9 V/15 V rails, working alongside primary front-end protection. Use Value: Low-leakage (<1 μA) and fast response preserve signal integrity while meeting IEC 61000-4-2 Level 4 (±15 kV air) requirements. |
| Industrial PLC Digital Input Module | Commercial HVAC Controller |
Use Scenario: Safeguards 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role: Standoff-rated TVS on each input channel, referenced to common ground, with series current-limiting resistor. Use Value: 171 V VWM allows reliable operation across full 24 V ±20 % range while clamping >200 V transients to <274 V. | Use Scenario: Protects thermostat communication bus (e.g., BACnet MS/TP) and sensor supply lines in HVAC control panels subject to lightning-induced surges. IC Role / Device Role: Point-of-load TVS on 24 V auxiliary power rail feeding temperature/humidity sensors and RS-485 transceivers. Use Value: AEC-Q101 qualification ensures stability in high-temperature enclosures (>85 °C ambient), with 150 °C TJ rating preventing thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ200A-E3/52 | Same VWM (171 V), identical SMB package, but non-AEC-Q101, commercial-grade only | Lacks automotive qualification; suitable for industrial/commercial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive reliability needs |
| SMCJ200A-HM3 | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM and AEC-Q101 qualification | Requires more PCB area; used where higher surge margin is needed (e.g., battery line protection) | Choose when system-level surge testing exceeds 600 W or when longer pulse durations (e.g., ISO 7637-2 pulse 1) demand greater energy handling |
Compared with SMAJ200A-E3/52, SM6T200AHM3/H adds AEC-Q101 qualification and halogen-free compliance for automotive deployment; versus SMCJ200A-HM3, it trades 900 W lower peak power for 30 % smaller footprint and lower parasitic inductance-critical for high-speed signal line protection.
Availability
SM6T200AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and commercial HVAC controllers requiring stable component supply with guaranteed halogen-free, AEC-Q101-qualified TVS protection.
Supply support for SM6T200AHM3/H 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 and industrial environments, balancing high surge capability, compact size, and qualification-grade robustness.
FAQ
What is the clamping voltage of SM6T200AHM3/H and how is it measured?
The SM6T200AHM3/H has a maximum clamping voltage (VC) of 274 V at 2.2 A using the standardized 10/1000 μs double-exponential surge waveform. This value is measured per Figure 1 in Vishay document 88385, with the device mounted on 5.0 mm × 5.0 mm copper pads. The clamping voltage defines the peak voltage imposed on protected circuitry during transient events, and SM6T200AHM3/H maintains this specification across its full operating temperature range.
Is SM6T200AHM3/H suitable for automotive applications?
Yes, SM6T200AHM3/H is AEC-Q101 qualified and designated with the HM3 suffix, indicating halogen-free, RoHS-compliant construction and validation for automotive use. It meets requirements for temperature cycling, highly accelerated life testing (HALT), and surge robustness per AEC-Q101 Rev G. SM6T200AHM3/H is commonly deployed in engine control units, body control modules, and infotainment power supplies where load dump and jump-start transients occur.
What does the "HM3" suffix mean in SM6T200AHM3/H?
The "HM3" suffix in SM6T200AHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., "E3" or "M3") and confirms compliance with automotive environmental and reliability standards. The "H" denotes the tape-and-reel packaging option (7″ diameter), and "/H" specifies the revision code per Vishay's ordering nomenclature in document 88385.
How does SM6T200AHM3/H compare to bidirectional TVS diodes?
SM6T200AHM3/H is unidirectional and intended for DC circuits where polarity is fixed-such as 12 V or 24 V automotive rails. Unlike bidirectional variants (e.g., SM6T200CA), it conducts only in reverse avalanche and blocks forward current, eliminating risk of unintended conduction during normal operation. Its VWM (171 V) and clamping behavior are specified for reverse-biased conditions only, making SM6T200AHM3/H inappropriate for AC or dual-polarity signal lines.
What is the thermal resistance of SM6T200AHM3/H and how does it affect layout?
SM6T200AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards. This value assumes minimal copper area; increasing pad size or adding internal ground planes reduces RθJA and improves surge survivability. For sustained power dissipation or high-temperature environments, layout must provide adequate copper area and airflow-otherwise, junction temperature may exceed 150 °C, degrading SM6T200AHM3/H reliability.
SM6T200AHM3/H 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T200AHM3/H FAQ
1.How can I place an order for SM6T200AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T200AHM3/H 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 SM6T200AHM3/H reliable?
The price and inventory of SM6T200AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T200AHM3/H is usually 5 days.
3.What payment methods are accepted for SM6T200AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T200AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T200AHM3/H?
SM6T200AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T200AHM3/H 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 SM6T200AHM3/H?
For technical support, including SM6T200AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T200AHM3/H requirements.
6.How does Aetrix verify that SM6T200AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T200AHM3/H 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 SM6T200AHM3/H meets industry standards.
7.What is the process for return or replacement of SM6T200AHM3/H?
All SM6T200AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T200AHM3/H, 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 SM6T200AHM3/H part is unused and in its original packaging.
Return procedure for SM6T200AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T200AHM3/H Tags
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