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Vishay General Semiconductor - Diodes Division SM6T36CAHE3_B/H
- Part No.:
- SM6T36CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36CAHE3_B/H.pdf
- Description:
- 600W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
SM6T36CAHE3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 600 W peak pulse power (10/1000 μs), and clamping voltage of 49.9 V at 12 A. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T36CAHE3_B/H datasheet, SM6T36CAHE3_B/H pinout, SM6T36CAHE3_B/H application, or SM6T36CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low-inductance SMB package, and compliance with IEC 61000-4-2 (±30 kV contact) and ISO 16750-2 surge requirements.
Technical Context
The SM6T36CAHE3_B/H operates as a symmetrical avalanche-clamped bidirectional TVS, delivering identical forward and reverse breakdown behavior per its CA suffix designation. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 μA at 30.8 V).
Designed for surface-mount automated assembly, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 (260 °C peak reflow). Thermal resistance is RθJA = 100 °C/W (typ.) on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise clamping onset threshold in both directions |
| VWM | 30.8 V - maximum continuous reverse stand-off voltage before leakage exceeds 1 μA |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - actual worst-case clamping voltage during surge events |
| PPPM | 600 W - peak transient power handling capacity under standardized 10/1000 μs waveform |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, and ESD stress testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band absent per bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (reverse bias) | Accepts surge current during negative transients; symmetric to Cathode in bidirectional operation |
| Cathode | Transient current entry point (forward bias) | Accepts surge current during positive transients; electrically identical to Anode due to CA symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates need for orientation-aware layout |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - supports Tier-1 BOM inclusion without additional qualification |
| Low clamping ratio (VC/VBR) | 1.46 (49.9 V / 34.2 V) - tight suppression window minimizes overvoltage stress on protected ICs |
| MSL Level 1 rating | 260 °C peak reflow compatibility - enables single-pass lead-free assembly without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller GPIOs in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Withstands 600 W surges while limiting voltage to ≤49.9 V, preserving integrity of 3.3 V/5 V logic and analog front-ends. | Use Scenario: Safeguarding RS-485/CAN FD physical layer receivers in factory automation PLCs subject to cable-induced lightning surges. IC Role / Device Role / Timing Role: Primary line-side TVS on differential bus pairs (CAN_H/CAN_L), mounted adjacent to connector with minimal trace length. Use Value: Low-inductance SMB package and symmetrical clamping ensure balanced protection without skewing differential signaling. |
| Consumer Power Adapter Input | Medical Diagnostic Equipment Signal Lines |
Use Scenario: Secondary-side overvoltage suppression on 12 V/24 V DC outputs of switched-mode power supplies in smart home hubs. IC Role / Device Role / Timing Role: Fast-response transient suppressor across output rails to prevent latch-up or damage during hot-plug or short-circuit recovery. Use Value: 150 °C TJ max and 5.0 W steady-state dissipation support continuous operation in enclosed enclosures. | Use Scenario: ESD protection for analog sensor inputs (e.g., ECG electrodes, temperature probes) in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) bidirectional clamp on high-impedance signal paths prior to instrumentation amplifiers. Use Value: Sub-1 μA leakage at 30.8 V prevents DC offset errors in precision biopotential measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VBR range (34.2–37.8 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Less robust for repeated 600 W surges; suitable only where peak energy is limited or board space is critical | Select SMAJ36CA only when PCB area is constrained and surge duty cycle is low. |
| 1.5KE36CA | Higher PPPM = 1500 W, axial DO-201 package; VC = 58.1 V at 25.9 A - looser clamping ratio (1.71) | Requires through-hole mounting; less suitable for automated SMT lines and high-density layouts | Choose 1.5KE36CA only for legacy through-hole designs needing higher surge margin and accepting higher clamping voltage. |
Compared with SMAJ36CA and 1.5KE36CA, SM6T36CAHE3_B/H delivers optimal balance of AEC-Q101 qualification, 600 W capability, SMB SMT compatibility, and tight 49.9 V clamping-making it the preferred choice for new automotive and industrial SMT designs requiring production-ready reliability.
Availability
SM6T36CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and medical diagnostic equipment signal lines requiring stable component supply and long-term lifecycle support.
Supply support for SM6T36CAHE3_B/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 robust transient suppression in automotive, industrial, and telecom systems-delivering AEC-Q101 qualified, high-power, low-inductance TVS solutions in compact SMB packages.
FAQ
What is the breakdown voltage tolerance of SM6T36CAHE3_B/H?
The SM6T36CAHE3_B/H has a specified breakdown voltage range of 34.2 V to 37.8 V at 1 mA test current, representing a ±5% tolerance around the nominal 36 V rating. This tight VBR distribution ensures consistent clamping performance across production lots and supports reliable design margining in safety-critical applications such as automotive ECUs where predictable overvoltage response is mandatory. The SM6T36CAHE3_B/H datasheet confirms this specification under Electrical Characteristics Table on page 2.
Is SM6T36CAHE3_B/H suitable for automotive applications?
Yes, SM6T36CAHE3_B/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix, indicating RoHS-compliant and automotive-grade qualification. It undergoes stress testing per AEC-Q101 including HTOL, temperature cycling, and ESD (HBM ≥8 kV, CDM ≥1 kV). The SM6T36CAHE3_B/H is deployed in engine control modules, body electronics, and ADAS sensor interfaces where sustained operation up to +150 °C and immunity to ISO 7637-2 pulses are required.
What is the clamping voltage of SM6T36CAHE3_B/H at rated peak pulse current?
The SM6T36CAHE3_B/H clamps to a maximum of 49.9 V at 12.0 A under the standard 10/1000 μs double-exponential surge waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay SM6T datasheet (Doc. #88385, Rev. 09-Jan-2024). The low clamping voltage-combined with its 30.8 V stand-off rating-provides a 19.1 V design margin, enabling effective protection of 3.3 V and 5 V ICs without external series impedance.
Does SM6T36CAHE3_B/H have polarity markings on the package?
No, SM6T36CAHE3_B/H does not feature polarity markings because it is a bidirectional TVS diode (indicated by the "CA" suffix). Unlike unidirectional variants (e.g., SM6T36A), the SM6T36CAHE3_B/H exhibits identical electrical characteristics in both forward and reverse directions, eliminating the need for orientation during placement. The SMB (DO-214AA) package is symmetric, with no cathode band or other visual polarity indicators-confirmed in the Mechanical Data section of the Vishay SM6T datasheet.
What is the thermal resistance of SM6T36CAHE3_B/H in standard mounting conditions?
The SM6T36CAHE3_B/H 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, as specified in the Thermal Characteristics table (page 2, Doc. #88385). This value assumes standard FR-4 PCB with 1 oz copper; adding internal ground/power planes or thermal vias can reduce RθJA by up to 30%. The SM6T36CAHE3_B/H's RθJL = 20 °C/W further supports efficient heat conduction to PCB traces.
SM6T36CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- 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)
SM6T36CAHE3_B/H FAQ
1.How can I place an order for SM6T36CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36CAHE3_B/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 SM6T36CAHE3_B/H reliable?
The price and inventory of SM6T36CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T36CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36CAHE3_B/H?
SM6T36CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36CAHE3_B/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 SM6T36CAHE3_B/H?
For technical support, including SM6T36CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36CAHE3_B/H requirements.
6.How does Aetrix verify that SM6T36CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T36CAHE3_B/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 SM6T36CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T36CAHE3_B/H?
All SM6T36CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36CAHE3_B/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 SM6T36CAHE3_B/H part is unused and in its original packaging.
Return procedure for SM6T36CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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