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Vishay General Semiconductor - Diodes Division SM6T36AHM3_A/I
- Part No.:
- SM6T36AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36AHM3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,137
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Product details
Overview
SM6T36AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 36 V breakdown voltage (VBR = 34.2–37.8 V at 1.0 mA), 49.9 V max clamping voltage (VC) at 12.0 A IPPM, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualified for automotive use. It protects MOSFETs and sensor signal lines against inductive switching transients in engine control units.
For engineers reviewing the SM6T36AHM3_A/I datasheet, SM6T36AHM3_A/I pinout, SM6T36AHM3_A/I application, or SM6T36AHM3_A/I equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, IPPM derating above 25 °C, unidirectional polarity alignment with system ground reference, and halogen-free RoHS compliance for automotive Tier-1 supply chain traceability.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias (VR ≤ 30.8 V), leakage stays ≤1.0 μA; during transient overvoltage exceeding VBR, it avalanches to clamp energy within 1 ns, limiting voltage to ≤49.9 V at 12.0 A. Its low-inductance SMB package enables fast response without parasitic ringing on high-speed signal lines.
Designed for automotive-grade reliability, SM6T36AHM3_A/I features glass-passivated junction, MSL Level 1 moisture sensitivity, 260 °C lead-free reflow compatibility, and JESD201 Class 2 whisker resistance - all verified per AEC-Q101 stress test conditions including HTGB, TCT, and H3TRB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 30.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - surge energy handling capacity under standardized lightning-like waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood environments |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height for automated placement |
| Qualification | AEC-Q101 qualified - validated for automotive electronics per stress test requirements including temperature cycling and humidity testing |
Pinout & Package
SM6T36AHM3_A/I uses the SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, 0.220" × 0.205" (5.59 mm × 5.21 mm) body, cathode band marking on one end. Mounting requires 0.2" × 0.2" copper pads per terminal per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts avalanche current to ground during overvoltage |
| Anode | Ground reference node | Low-impedance return path for surge current; must connect to solid system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1 and Pulse 2a transients in 12 V automotive systems without failure |
| 49.9 V clamping voltage at 12 A | Ensures protected 3.3 V/5 V microcontrollers and CAN transceivers remain below absolute maximum ratings during surge |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive under-hood applications including powertrain and ADAS modules |
| Halogen-free, RoHS-compliant | Fulfills EU ELV Directive and OEM material declaration requirements for Tier-1 vehicle programs |
| MSL Level 1, 260 °C reflow | Enables single-pass lead-free assembly without popcorn cracking or delamination |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Camera Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 35 V, 100 ms) and inductive kickback from fuel injector drivers on 12 V supply rail. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and DC/DC input, clamping surges before they reach downstream regulators. Use Value: Prevents regulator latch-up or burnout by limiting voltage to 49.9 V while dissipating up to 600 W peak power. | Use Scenario: Protects MIPI CSI-2 differential pairs in rear-view cameras from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector, grounded to chassis to divert fast transients away from image sensor interface. Use Value: Maintains signal integrity with <10 pF junction capacitance while meeting ISO 10605 ±15 kV contact discharge immunity. |
| Body Control Module (BCM) LIN Bus Protection | Electric Power Steering (EPS) Motor Driver Gate Protection |
Use Scenario: Shields LIN transceiver pins from battery reversal and jump-start induced transients in door module networks. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LIN bus, providing bidirectional protection via internal diode stack configuration. Use Value: Clamps negative transients to −0.7 V and positive surges to 49.9 V, preserving LIN physical layer compliance. | Use Scenario: Guards high-side N-channel MOSFET gates against Miller-induced voltage spikes during motor commutation. IC Role / Device Role / Timing Role: TVS placed between gate and source, absorbing dv/dt-induced overshoot that could exceed MOSFET VGS rating. Use Value: Limits gate-source voltage to ≤49.9 V, preventing oxide breakdown and ensuring reliable PWM switching at 20 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5B | Same VBR range (34.2–37.8 V) and VC (49.9 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 125 °C/W) | Not AEC-Q101 qualified; suitable for commercial industrial controls but not automotive under-hood use | Select when space-constrained PCB layout prioritizes size over automotive qualification and surge margin |
| 1.5SMC36A | Identical electrical specs but SMC (DO-214AB) package: 7.11 mm × 6.22 mm, 2.36 mm height; RθJA = 85 °C/W | Higher thermal mass supports longer surge duration; used in telecom power supplies where board space allows larger footprint | Select when thermal performance under repetitive surges outweighs compactness, and AEC-Q101 is not required |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, SM6T36AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it the only choice for automotive signal/power line protection where regulatory compliance, supply chain traceability, and automated assembly coexist.
Availability
SM6T36AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply with full AEC-Q101 documentation and halogen-free compliance.
Supply support for SM6T36AHM3_A/I 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components for harsh-environment applications.
The SM6T Series targets automotive and industrial transient suppression, engineered specifically to meet ISO 7637-2, ISO 16750-2, and AEC-Q101 requirements for robustness in 12 V and 24 V systems.
FAQ
What is the clamping voltage of SM6T36AHM3_A/I at its rated peak pulse current?
The SM6T36AHM3_A/I has a maximum clamping voltage (VC) of 49.9 V when subjected to its rated peak pulse current of 12.0 A using the 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and ensures protected circuits remain within safe operating limits during standardized surge events. The SM6T36AHM3_A/I maintains this clamping performance across its qualified temperature range of −65 °C to +150 °C.
Is SM6T36AHM3_A/I suitable for protecting CAN FD interfaces?
Yes, SM6T36AHM3_A/I is suitable for CAN FD interface protection when placed on the CAN_H/CAN_L lines with appropriate series impedance. Its 49.9 V clamping voltage provides margin above the CAN FD common-mode range (−2 V to +7 V) and withstands ISO 11898-2 specified transients. The SMB package's low inductance minimizes voltage overshoot during fast ESD events, and AEC-Q101 qualification confirms suitability for automotive network nodes. SM6T36AHM3_A/I must be paired with proper PCB layout - short traces, dedicated ground plane, and minimized loop area.
Does SM6T36AHM3_A/I have a bidirectional variant?
No, SM6T36AHM3_A/I is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the SM6T36CA variant (with "CA" suffix), which provides symmetrical clamping for AC-coupled or floating signal lines. The SM6T36AHM3_A/I's unidirectional architecture makes it ideal for DC-biased rails like power inputs or grounded signal lines where polarity is fixed and reverse conduction must be blocked during normal operation.
What does the "HM3_A/I" suffix in SM6T36AHM3_A/I signify?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "A" indicates revision level A per Vishay's document control; "I" specifies packaging in 13-inch tape-and-reel format with 3200 units per reel. This full suffix confirms SM6T36AHM3_A/I meets automotive Tier-1 material declarations, supports lead-free reflow at 260 °C, and ships in logistics-ready packaging compatible with high-volume SMT lines. SM6T36AHM3_A/I is traceable to Vishay's certified manufacturing lot records.
How does SM6T36AHM3_A/I compare to older SM6T36A-E3 variants in terms of reliability?
SM6T36AHM3_A/I improves upon legacy SM6T36A-E3 variants through AEC-Q101 qualification, halogen-free molding compound, and enhanced whisker resistance (JESD201 Class 2). While both share identical electrical specs (VBR, VC, PPPM), SM6T36AHM3_A/I undergoes additional stress testing including 1000-cycle temperature cycling and 1000-hour H3TRB, validating long-term reliability in automotive under-hood environments. SM6T36AHM3_A/I also guarantees MSL Level 1 handling - a requirement not enforced in commercial-grade E3 versions.
SM6T36AHM3_A/I 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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T36AHM3_A/I FAQ
1.How can I place an order for SM6T36AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36AHM3_A/I 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 SM6T36AHM3_A/I reliable?
The price and inventory of SM6T36AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T36AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36AHM3_A/I?
SM6T36AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36AHM3_A/I 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 SM6T36AHM3_A/I?
For technical support, including SM6T36AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36AHM3_A/I requirements.
6.How does Aetrix verify that SM6T36AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T36AHM3_A/I 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 SM6T36AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T36AHM3_A/I?
All SM6T36AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36AHM3_A/I, 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 SM6T36AHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T36AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36AHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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