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Semtech Corporation SC310BSKTRT
- Part No.:
- SC310BSKTRT
- Manufacturer:
- Semtech Corporation
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
SC310BSKTRT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,723
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Product details
Overview
SC310BSKTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS/ESD protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range - enabling robust USB Type-C PD bus protection in industrial and portable systems.
For engineers reviewing the SC310BSKTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF), DFN-6 package footprint, and compatibility with load switch input protection architectures.
Technical Context
The SC310BSKTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates over –40°C to +125°C, supports unsymmetrical line surge testing per IEC 61000-4-5 (±1kV, 1.2/50μs), and maintains <600 nA reverse leakage at 22V. Its functional architecture separates trigger threshold (≈27.9V VBR) from clamping behavior (27.5–28V at 24–40A), decoupling protection performance from temperature drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 24–40A (1.2/50μs + 8/20μs combo wave) - stays below typical 30V load switch damage thresholds. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds USB-IF and IEC 61000-4-2 Class 4 requirements. |
| Dynamic Resistance | 20 mΩ - enables low-voltage overshoot during fast transients and minimizes power dissipation in FET channel. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - suitable for DC/low-speed power rails; not intended for high-speed data lines. |
| Package | DFN-6 (1.6 × 1.6 × 0.55 mm) - saves >50% board area vs. SO-8 TVS solutions while supporting high-current PCB routing. |
Pinout & Package
SC310BSKTRT is housed in a Pb-free, RoHS-compliant 6-pin DFN package (1.6 mm × 1.6 mm × 0.55 mm) with exposed thermal pad-less construction. All pins require connection for full 40A surge rating: three GND pins (1–3) must be tied to solid ground plane via multiple vias; three IN pins (4–6) connect in parallel to the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common return path for surge current; all three must be connected to minimize inductance and maximize current sharing. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected bus; equal current division ensures rated 40A handling and thermal balance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28 V across 24–40A and –40°C to +125°C - eliminates design margin inflation needed with TVS diodes. |
| Surge-rated FET protection | Replaces PN-junction TVS with low-RDS(on) shunt switch - reduces thermal stress and improves reliability under repeated surges. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 100 kHz & 5 kHz bursts) - protects against switching noise in motor drives and PLCs. |
| Low leakage | <600 nA at 22 V - avoids system standby current degradation in battery-powered IoT devices. |
| UL 94V-0 molding compound | Flame-retardant encapsulation - satisfies safety requirements for industrial and medical end equipment. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD events during hot-plug and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS suppressor placed between connector and PD controller or buck converter input. Use Value: Maintains 27.5–28V clamping at full 40A surge - prevents overvoltage damage to downstream 30V-rated controllers and e-fuses. |
Use Scenario: Securing input rails of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation where 22V supply lines face repetitive surge exposure. IC Role / Device Role / Timing Role: Front-end transient shunt that diverts energy before it reaches the load switch's internal FET gate oxide. Use Value: Clamping stability across temperature prevents thermal runaway during sustained 85°C ambient operation in enclosed enclosures. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC Input Protection |
|
Use Scenario: Safeguarding 22V auxiliary rails in battery-backed smart sensors and gateway modules deployed in uncontrolled environments (e.g., outdoor gateways). IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, upstream of PMIC and battery charging ICs. Use Value: 175 pF capacitance avoids signal integrity issues on low-frequency power paths while delivering ±30kV ESD robustness. |
Use Scenario: Protecting 20V DC-in ports on ultrabooks and tablets subjected to user-handled ESD and accidental AC adapter transients. IC Role / Device Role / Timing Role: Compact, low-profile suppressor mounted adjacent to barrel jack or USB-C port. Use Value: 1.6 × 1.6 mm DFN footprint enables placement within tight mechanical constraints without sacrificing 40A surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs, same DFN-6 package, identical marking code T22 - direct Semtech manufacturing variant with 3,000-unit reel packaging. | No functional difference; used interchangeably in production BOMs where tape-and-reel quantity aligns with assembly volume. | Select TDS2211P.C when sourcing from Semtech-authorized distributors with standard 7″ reels; SC310BSKTRT may reflect alternate branding or distribution channel labeling. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping, no current-dependent flat response; 200W PPPK. | Limited to lower-energy surges; clamping rises to ~42V at 40A and increases with temperature - insufficient for 30V-tolerance systems. | Choose SMAJ22A only for cost-sensitive, non-critical 22V rails where 35–42V clamping is acceptable and surge repetition is infrequent. |
Compared with SC310BSKTRT, TDS2211P.C offers identical protection performance and form factor, while SMAJ22A trades clamping stability and surge capacity for lower unit cost and wider distributor availability - making SC310BSKTRT optimal for high-reliability USB PD and industrial load switch inputs.
Availability
SC310BSKTRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and verified surge compliance.
Supply support for SC310BSKTRT 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and connectivity.
The SC310BSKTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where clamping voltage stability and temperature independence are critical.
FAQ
What is the maximum operating temperature for SC310BSKTRT?
The SC310BSKTRT is rated for continuous operation from –40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range, with test data confirming consistent 27.5–28V performance at both extremes - critical for automotive under-hood or industrial enclosure deployments where thermal management is constrained.
Does SC310BSKTRT require a thermal pad on the PCB?
No, SC310BSKTRT does not require a thermal pad. Its DFN-6 package dissipates surge energy through conduction into the PCB ground plane via pins 1–3, and the datasheet explicitly states "no thermal pad is needed" because transient energy is handled dynamically in the FET channel rather than thermally accumulated in a junction. Proper grounding with multiple vias is essential instead.
Can SC310BSKTRT protect high-speed data lines like USB SS or PCIe?
No, SC310BSKTRT is not suitable for high-speed data lines. With 175 pF junction capacitance at 22 V, it would severely degrade signal integrity on SuperSpeed (5+ Gbps), DisplayPort, or PCIe lanes. It is specifically designed for DC or low-frequency power and control lines - use low-capacitance devices like RClamp3371ZC (<0.25 pF) for those interfaces.
How does SC310BSKTRT differ from standard TVS diodes in surge response?
SC310BSKTRT uses an active FET-based shunt architecture triggered by a precision circuit, resulting in near-constant clamping voltage (27.5–28V) across 24–40A and temperature. Standard TVS diodes exhibit linear clamping rise (VC = VBR + IPP × RDYN) and degrade with temperature - SC310BSKTRT avoids both limitations, offering predictable protection margins.
Is SC310BSKTRT RoHS and REACH compliant?
Yes, SC310BSKTRT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin - confirmed in Semtech's official datasheet Rev 2.5 and material declarations.
SC310BSKTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.4 MHz
- Current - Input Bias:
- 150 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 270µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 25 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SC310BSKTRT FAQ
1.How can I place an order for SC310BSKTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC310BSKTRT 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 SC310BSKTRT reliable?
The price and inventory of SC310BSKTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC310BSKTRT is usually 5 days.
3.What payment methods are accepted for SC310BSKTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC310BSKTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC310BSKTRT?
SC310BSKTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC310BSKTRT 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 SC310BSKTRT?
For technical support, including SC310BSKTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC310BSKTRT requirements.
6.How does Aetrix verify that SC310BSKTRT is sourced from the original manufacturer or authorized distributors?
All SC310BSKTRT 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 SC310BSKTRT meets industry standards.
7.What is the process for return or replacement of SC310BSKTRT?
All SC310BSKTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC310BSKTRT, 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 SC310BSKTRT part is unused and in its original packaging.
Return procedure for SC310BSKTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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