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Vishay General Semiconductor - Diodes Division SM6T36AHE3/5B
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- Part No.:
- SM6T36AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36AHE3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,122
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Product details
Overview
SM6T36AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 34.2 V minimum breakdown voltage (VBR), 30.8 V stand-off voltage (VWM), 49.9 V maximum clamping voltage (VC) at 12.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform - deployed for overvoltage protection of automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T36AHE3/5B datasheet, SM6T36AHE3/5B pinout, SM6T36AHE3/5B application, or SM6T36AHE3/5B equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 100 °C/W) on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ns) to ESD and surge events. Its 30.8 V stand-off voltage ensures compatibility with 24 V automotive supply rails while maintaining low leakage (<1.0 μA).
The device sustains 600 W peak pulse power under standardized 10/1000 μs waveform and exhibits 49.9 V clamping at 12.0 A IPPM - enabling robust protection of downstream ICs without exceeding safe voltage thresholds during load dump or inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum reverse working voltage before significant leakage; compatible with 24 V system nominal rails |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - ensures reliable triggering above normal operating voltage with margin |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - limits transient voltage seen by protected circuitry |
| PPPM | 600 W - peak surge handling capability per industry-standard waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on recommended 5.0 mm × 5.0 mm pad layout |
| TJ max | +150 °C - maximum junction temperature supports under-hood automotive operation |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., sensor output or MOSFET gate); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1 and Pulse 2a/b surges in 24 V automotive systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 30 kV contact discharge) |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay environments subject to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤49.9 V during 12.0 A surges, preserving ADC integrity and preventing latch-up in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp protector on 24 V DC input terminals upstream of optocoupler or Schmitt trigger interface. Use Value: Maintains 30.8 V stand-off while clamping to 49.9 V, ensuring clean signal recognition and eliminating false triggering during 600 W transients. |
| MOSFET Gate Driver Protection | Telecom Power Supply Clamp |
Use Scenario: Shielding high-side N-channel MOSFET gates from voltage spikes caused by inductive switching in motor drive half-bridges. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp connected between gate and source, referenced to driver IC ground. Use Value: Responds in <1 ns to limit gate-source voltage to ≤49.9 V, preventing oxide breakdown and ensuring 150 °C junction survival during repetitive switching events. | Use Scenario: Suppressing lightning-induced surges on -48 V telecom power distribution boards feeding remote radio units. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail, coordinated with upstream MOVs and fuses. Use Value: Delivers 600 W pulse handling with 49.9 V clamping, reducing stress on downstream DC/DC converters rated for ≤53 V absolute maximum input. |
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-E3/5B | Same SMB package, but 36 V VWM = 30.8 V, VBR min = 40.0 V, VC = 58.1 V at 10.3 A - higher clamping voltage and lower IPPM | Less effective clamping headroom for 24 V systems; suitable where higher VC is acceptable | Select SMAJ36A-E3/5B only if board-level layout constraints require identical footprint and higher VBR margin is prioritized over clamping tightness |
| 1.5SMC36A | Higher-power SMC package (1500 W), same VWM/VBR range, VC = 49.9 V at 30.1 A - larger footprint, higher thermal mass | Used where surge energy exceeds 600 W or PCB layout allows larger case | Choose 1.5SMC36A when system-level testing reveals repeated failure of SM6T36AHE3/5B under multi-pulse stress or elevated ambient temperatures |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, the SM6T36AHE3/5B offers tighter clamping (49.9 V vs. 58.1 V) in a smaller SMB footprint and delivers AEC-Q101 qualification - making it optimal for space-constrained, automotive-grade 24 V signal line protection where precise voltage limiting is critical.
Availability
SM6T36AHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power supply clamping requiring stable component supply, AEC-Q101 compliance, and consistent 600 W surge handling.
Supply support for SM6T36AHE3/5B 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 validation.
The SM6T Series is designed specifically for surface-mount transient voltage suppression in automotive, industrial, and telecom systems - balancing low clamping voltage, AEC-Q101 qualification, and compact SMB packaging for automated assembly.
FAQ
What is the clamping voltage of SM6T36AHE3/5B and under what test condition is it specified?
The SM6T36AHE3/5B has a maximum clamping voltage (VC) of 49.9 V, measured at a peak pulse current (IPPM) of 12.0 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by protected circuitry during surge events.
Is SM6T36AHE3/5B qualified for automotive applications?
Yes, SM6T36AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code. It meets all stress tests defined in the AEC-Q101 standard for discrete semiconductors, including temperature cycling, humidity bias HAST, and mechanical shock - making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "5B" in SM6T36AHE3/5B indicate?
The "5B" denotes the preferred package code specifying 13-inch diameter plastic tape and reel delivery, with a base quantity of 3200 units per reel. This format supports high-volume SMT placement and is compatible with standard pick-and-place equipment used in automotive and industrial manufacturing.
How does the thermal resistance of SM6T36AHE3/5B affect its derating in real-world PCB layouts?
The SM6T36AHE3/5B has a typical RθJA of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Derating begins above 25 °C ambient: at 85 °C ambient, its peak pulse power must be reduced to ~360 W to maintain TJ ≤ 150 °C - requiring careful thermal pad design in high-temperature environments.
Can SM6T36AHE3/5B be used in bidirectional configurations?
No, SM6T36AHE3/5B is a unidirectional TVS diode, identified by its cathode band marking. For bidirectional protection, Vishay specifies the CA-suffix variant (e.g., SM6T36CA). Using SM6T36AHE3/5B in reverse-biased AC applications would result in forward conduction and potential failure.
SM6T36AHE3/5B 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):
- 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 (SMBJ)
SM6T36AHE3/5B FAQ
1.How can I place an order for SM6T36AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36AHE3/5B 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 SM6T36AHE3/5B reliable?
The price and inventory of SM6T36AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36AHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T36AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36AHE3/5B?
SM6T36AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36AHE3/5B 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 SM6T36AHE3/5B?
For technical support, including SM6T36AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36AHE3/5B requirements.
6.How does Aetrix verify that SM6T36AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T36AHE3/5B 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 SM6T36AHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T36AHE3/5B?
All SM6T36AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36AHE3/5B, 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 SM6T36AHE3/5B part is unused and in its original packaging.
Return procedure for SM6T36AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36AHE3/5B Tags
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