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Vishay General Semiconductor - Diodes Division SM6T36CAHM3_B/I
- Part No.:
- SM6T36CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36CAHM3_B/I.pdf
- Description:
- 600W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
SM6T36CAHM3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 36 V standoff voltage (VWM), 49.9 V max clamping voltage at 12 A IPPM (10/1000 μs), 600 W peak pulse power, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T36CAHM3_B/I datasheet, SM6T36CAHM3_B/I pinout, SM6T36CAHM3_B/I application, or SM6T36CAHM3_B/I equivalent, key selection factors include bidirectional clamping capability, low clamping ratio (1.39), halogen-free RoHS compliance, MSL Level 1 rating, and suitability for CAN/LIN bus protection in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 34.2 V / 37.8 V at 1 mA) and clamping behavior. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and robust surge handling up to 12 A peak pulse current under 10/1000 μs waveform.
Thermal design relies on RθJA = 100 °C/W and RθJL = 20 °C/W, enabling operation from −65 °C to +150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and is qualified per AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for 36 V nominal systems. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - Confirmed symmetric breakdown threshold in both directions; ensures predictable turn-on. |
| VC (Clamping Voltage) | 49.9 V at 12 A (10/1000 μs) - Limits transient voltage seen by protected ICs; clamping ratio = 1.39. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when mounted per recommended pad layout. |
| ID (Reverse Leakage) | <1 μA at 30.8 V - Negligible standby current; avoids signal distortion or battery drain in always-on circuits. |
| TJ Range | −65 °C to +150 °C - Supports under-hood automotive deployment and industrial ambient extremes. |
| Package | SMB (DO-214AA) - Surface-mount footprint (5.21 mm × 4.57 mm × 2.20 mm); compatible with automated pick-and-place. |
Pinout & Package
SMB (DO-214AA) package: cathode/anode terminals are non-polarized for bidirectional operation; no marking on body per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Surge current path | Interchangeable terminals; conducts equally in either direction during overvoltage events. |
| Case (Anode-Cathode Junction) | Transient energy dissipation node | Thermally coupled to PCB copper pads; requires 5.0 mm × 5.0 mm copper per terminal for rated PPPM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21; eliminates brominated flame retardants while maintaining UL 94 V-0 flammability rating. |
| Low clamping inductance | Minimizes voltage overshoot during fast transients (e.g., EFT 5/50 ns), critical for protecting high-speed interfaces. |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects CANH/CANL differential pair against ISO 7637-2 load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface before CAN transceiver. Use Value: Maintains signal integrity below 50 V clamping threshold while surviving 600 W surge pulses without degradation. |
Use Scenario: Shields analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-leakage TVS shunting transients induced by nearby motor switching or relay bounce. Use Value: Sub-1 μA leakage prevents output offset errors; SMB footprint enables compact placement near sensor connectors. |
| Automotive LIN Bus Protection | Consumer Appliance Motor Control Board |
Use Scenario: Safeguards single-wire LIN transceivers against battery connection reversal and electrostatic discharge. IC Role / Device Role / Timing Role: Symmetric clamp between LIN line and ground, leveraging bidirectional response for polarity-agnostic protection. Use Value: Matches LIN's 12 V nominal supply with 30.8 V VWM and withstands repeated 12 A surge events per AEC-Q101 lifetime testing. |
Use Scenario: Suppresses inductive kickback from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp flyback voltage spikes during PWM commutation. Use Value: 600 W rating handles repetitive 10/1000 μs surges; halogen-free construction complies with appliance safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM/VBR/VC specs but SMA package (smaller footprint, higher RθJA = 140 °C/W); lower PPPM derating above 25 °C. | Limited to lower-power or space-constrained designs where thermal margin allows reduced copper area. | Select SMAJ36CA only if board space is critical and peak surge duty cycle is low. |
| 1.5KE36CA | Through-hole DO-201 package; same electrical specs but higher mechanical robustness and better thermal dissipation (RθJL = 10 °C/W). | Suitable for prototyping, high-reliability industrial modules, or legacy through-hole assemblies. | Choose 1.5KE36CA when manual assembly, serviceability, or elevated thermal performance is prioritized over SMT automation. |
Compared with SMAJ36CA and 1.5KE36CA, SM6T36CAHM3_B/I delivers optimal balance of AEC-Q101 qualification, halogen-free compliance, SMB manufacturability, and validated 600 W surge handling-making it the preferred choice for volume automotive and industrial SMT production.
Availability
SM6T36CAHM3_B/I is available at Aetrix Electronics and suitable for automotive CAN/LIN bus protection, industrial sensor interface hardening, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SM6T36CAHM3_B/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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for robust transient suppression in automotive, industrial, and consumer systems-designed to meet stringent AEC-Q101, RoHS, and UL safety requirements while supporting high-volume SMT manufacturing.
FAQ
What is the clamping voltage of SM6T36CAHM3_B/I at its rated peak pulse current?
The SM6T36CAHM3_B/I has a maximum clamping voltage (VC) of 49.9 V at 12 A peak pulse current using the 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88385 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping ratio (VC/VWM = 1.39) confirms efficient transient suppression without excessive overvoltage.
Is SM6T36CAHM3_B/I suitable for automotive applications?
Yes, SM6T36CAHM3_B/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly listed in Vishay's ordering table for automotive use (base P/NHM3_X), and its thermal, surge, and reliability specifications align with under-hood and ECU-level deployment requirements.
What does the "CA" suffix indicate in SM6T36CAHM3_B/I?
The "CA" suffix in SM6T36CAHM3_B/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., SM6T36AHM3_B/I), this part has no polarity marking and functions identically regardless of voltage polarity applied across its terminals.
What is the recommended PCB pad layout for SM6T36CAHM3_B/I to achieve full 600 W rating?
To sustain the full 600 W peak pulse power rating, SM6T36CAHM3_B/I must be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay Document 88385. Smaller pads reduce thermal dissipation and cause premature failure under repeated surges; the SMB outline drawing on page 4 confirms minimum pad dimensions of 0.086" (2.18 mm) width.
How does the MSL Level 1 rating affect the handling of SM6T36CAHM3_B/I?
SM6T36CAHM3_B/I is rated MSL Level 1 per J-STD-020, meaning it may be exposed indefinitely to ambient conditions without moisture sensitivity concerns. No baking or dry-packaging is required prior to reflow soldering, and the device supports peak reflow temperatures up to 260 °C-enabling direct placement into standard lead-free assembly processes.
SM6T36CAHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T36CAHM3_B/I FAQ
1.How can I place an order for SM6T36CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36CAHM3_B/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 SM6T36CAHM3_B/I reliable?
The price and inventory of SM6T36CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T36CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36CAHM3_B/I?
SM6T36CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36CAHM3_B/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 SM6T36CAHM3_B/I?
For technical support, including SM6T36CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36CAHM3_B/I requirements.
6.How does Aetrix verify that SM6T36CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T36CAHM3_B/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 SM6T36CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T36CAHM3_B/I?
All SM6T36CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36CAHM3_B/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 SM6T36CAHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T36CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36CAHM3_B/I Tags
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