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Vishay General Semiconductor - Diodes Division SM6T36A-M3/52
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- Part No.:
- SM6T36A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36A-M3/52.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,992
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Product details
Overview
SM6T36A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 49.9 V max clamping voltage (VC) at 12.0 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SM6T36A-M3/52 datasheet, SM6T36A-M3/52 pinout, SM6T36A-M3/52 application, or SM6T36A-M3/52 equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification availability via HM3 variant.
Technical Context
The SM6T36A-M3/52 operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response to ESD and inductive switching transients. Its low-inductance SMB package enables effective suppression of sub-microsecond spikes while maintaining stable clamping under repetitive surge conditions up to 150 °C junction temperature.
It delivers 600 W peak pulse power per 10/1000 μs waveform with 49.9 V clamping at 12.0 A, and exhibits 1.0 μA max reverse leakage at 30.8 V stand-off. The device meets J-STD-020 MSL Level 1 and supports automated SMT placement with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - Ensures reliable avalanche initiation within defined tolerance band |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - Defines worst-case voltage seen by protected circuit during surge |
| PPPM | 600 W - Peak transient energy handling capacity under standardized surge waveform |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient, critical for derating above 25 °C |
| Package | SMB (DO-214AA) - Standard surface-mount outline with 0.220" x 0.130" footprint and cathode band marking |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); AEC-Q101 qualified available in HM3 variant |
Pinout & Package
SMB (DO-214AA) package with molded plastic body, matte tin-plated leads, and cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with recommended 5.0 mm × 5.0 mm copper pad per terminal for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-biased during clamping) | Connected to lower-potential side of protected line; carries surge current into ground path |
| Cathode | Avalanche clamping node (marked with band) | Connected to higher-potential side (e.g., VIN, signal line); initiates conduction when VAK 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 derating |
| Glass-passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time) |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without popcorn or delamination risk |
| Halogen-free, RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive and industrial end equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Limits rail voltage to ≤49.9 V during 12 A surge, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–5 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt induced lightning or EFT noise before entering signal conditioning circuitry. Use Value: Clamps transients to <50 V while adding <1 pF junction capacitance, preserving signal integrity up to 100 kHz bandwidth. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to surge testing per IEC 61000-4-5. IC Role / Device Role / Timing Role: Unidirectional TVS across output capacitor to absorb reflected surge energy from primary-side MOV failure. Use Value: Absorbs 600 W peak energy without degradation, maintaining regulated output during 1.2/50 μs line-to-ground surges. | Use Scenario: Protecting -48 V DC feeder lines in telecom base stations from induced surges due to nearby lightning strikes. IC Role / Device Role / Timing Role: TVS connected between feed line and return, leveraging unidirectional behavior to clamp negative surges only. Use Value: Withstands repeated 10/1000 μs surges up to 12 A while maintaining <1.0 μA leakage at -30.8 V, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/52 | Same SMB package, identical VWM/VBR/VC, but RoHS-compliant E3 suffix (not halogen-free) | No AEC-Q101 option; rated for commercial-grade use only | Select when halogen-free requirement is not mandated and cost sensitivity favors E3 variant |
| SMCJ36A-M3 | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same electrical specs | Better thermal performance (RθJA = 35 °C/W), suited for high-reliability industrial systems with limited airflow | Choose when surge duty cycle or ambient temperature demands >600 W capability and board space allows SMC footprint |
Compared with SMAJ36A-E3/52 and SMCJ36A-M3, the SM6T36A-M3/52 offers halogen-free compliance in a compact SMB form factor with verified 600 W surge handling-ideal for space-constrained automotive modules where material content and footprint are prioritized over ultra-high-power headroom.
Availability
SM6T36A-M3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer adapter secondary-side surge suppression requiring stable component supply and halogen-free compliance.
Supply support for SM6T36A-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, precision, and application-specific optimization.
The SM6T Series is engineered for high-volume surface-mount transient suppression in automotive, industrial, and telecom infrastructure-designed to deliver consistent clamping performance, low leakage, and robust thermal behavior in harsh environments.
FAQ
What is the maximum clamping voltage of the SM6T36A-M3/52 under standard test conditions?
The SM6T36A-M3/52 has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 μs waveform at 12.0 A peak pulse current. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during transient events. The SM6T36A-M3/52 maintains this clamping performance across its specified operating temperature range of -65 °C to +150 °C.
Does the SM6T36A-M3/52 meet automotive qualification standards?
The SM6T36A-M3/52 itself is a commercial-grade halogen-free part; however, the SM6T36AHM3 variant (with HM3 suffix) is explicitly AEC-Q101 qualified. The SM6T36A-M3/52 shares identical electrical and thermal characteristics with its HM3 counterpart, differing only in qualification status and traceability documentation. For automotive production, SM6T36AHM3_X should be selected to ensure full compliance.
How does the SMB package of the SM6T36A-M3/52 affect its thermal performance?
The SMB (DO-214AA) package of the SM6T36A-M3/52 provides a thermal resistance of 100 °C/W from junction to ambient (RθJA) when mounted on 5.0 mm × 5.0 mm copper pads. This requires careful PCB layout to avoid exceeding 150 °C maximum junction temperature under sustained 5.0 W power dissipation. Derating curves in the SM6T36A-M3/52 datasheet must be applied for operation above 25 °C ambient.
What is the meaning of the "M3" suffix in SM6T36A-M3/52?
The "M3" suffix in SM6T36A-M3/52 indicates halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating meeting JESD 201 Class 2. It also denotes commercial temperature grade (-65 °C to +150 °C) and compatibility with lead-free reflow up to 260 °C (MSL Level 1). The "/52" denotes packaging in 7" diameter tape-and-reel with 750 units per reel.
Can the SM6T36A-M3/52 be used in bidirectional configurations?
No-the SM6T36A-M3/52 is strictly unidirectional, as indicated by its "A" suffix and cathode band marking. For bidirectional operation, the SM6T36CA-M3 variant must be used. Using SM6T36A-M3/52 in reverse-biased configurations will result in forward conduction and potential failure; its electrical specifications apply only in the marked cathode-to-anode direction.
SM6T36A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
SM6T36A-M3/52 FAQ
1.How can I place an order for SM6T36A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36A-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 SM6T36A-M3/52 reliable?
The price and inventory of SM6T36A-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 SM6T36A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T36A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36A-M3/52?
SM6T36A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36A-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 SM6T36A-M3/52?
For technical support, including SM6T36A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36A-M3/52 requirements.
6.How does Aetrix verify that SM6T36A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T36A-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 SM6T36A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T36A-M3/52?
All SM6T36A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36A-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 SM6T36A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T36A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36A-M3/52 Tags
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