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Semtech Corporation SC810ULTRT
- Part No.:
- SC810ULTRT
- Manufacturer:
- Semtech Corporation
- Category:
- Battery Chargers
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
SC810ULTRT.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 6MLP
- Quantity:
- Payment:
- Shipping:
Inventory:440
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Product details
Overview
SC810ULTRT from Semtech is a transient diverting suppressor designed for high-energy EOS protection on 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SC810ULTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior under surge conditions, and validated alternatives for 22V bus protection in compact, thermally robust designs.
Technical Context
The SC810ULTRT 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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing surge current.
It delivers 1120W peak pulse power (8/20μs), maintains ≤600nA reverse leakage at 22V, and exhibits only 20mΩ dynamic resistance across 1–40A, enabling consistent protection performance from −40°C to +125°C without thermal derating penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - sets maximum continuous DC operating voltage for protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements with 2Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and industrial ESD immunity mandates without external shielding. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection; not suitable for high-speed data lines (requires separate <0.25pF TVS). |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; eliminates voltage rise with increasing current unlike standard TVS diodes. |
| Operating Temp. | −40°C to +125°C - supports operation in automotive under-hood, industrial motor drives, and outdoor IoT enclosures. |
Pinout & Package
SC810ULTRT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. All six terminals are surface-mount; no thermal pad required - energy dissipation occurs within the integrated FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB-C); tied together internally - requires single-point connection to upstream connector for optimal ESD coupling control. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A (8/20μs), eliminating design margin inflation needed with conventional TVS. |
| FET-based shunt topology | Replaces junction-limited TVS with low-RDS(on) MOSFET, shifting energy dissipation from PN junction to channel - enabling higher surge endurance and stable tempco. |
| High EFT immunity | Withstands ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz bursts), critical for industrial PLCs and metering equipment exposed to switching noise. |
| Space-optimized footprint | 1.6mm × 1.6mm DFN saves >60% board area vs. SO-8 or SOT-23 TVS solutions rated for equivalent 40A surge capability. |
| Lead-free & halogen-free | Complies with RoHS/WEEE and IPC-J-STD-020 moisture sensitivity level 1 (MSL-1), enabling standard reflow without baking or special handling. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed immediately after the connector, before the PD controller and load switch. Use Value: Maintains 28V clamping at full 40A surge - prevents latch-up or gate oxide damage in 24V-tolerant PD controllers (e.g., STUSB4500, TUSB7320) even at 125°C ambient. |
Use Scenario: Safeguarding input terminals of industrial-grade e-fuses (e.g., TI TPS25940, ON Semi NIS5132) in remote meters and robotics. IC Role / Device Role / Timing Role: Transient shunt device placed between field wiring and load switch VIN pin to prevent overvoltage failure of internal FET. Use Value: Limits voltage seen by load switch to ≤28V during lightning-induced surges - avoids destructive avalanche or gate-source breakdown in integrated power switches. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and gateway modules deployed in uncontrolled environments. IC Role / Device Role / Timing Role: Standalone EOS protector on always-on backup supply lines feeding real-time clocks or secure elements. Use Value: Delivers 1120W peak power handling in <2.6mm² footprint - enables ruggedized enclosure designs without external MOVs or bulky varistors. |
Use Scenario: Protecting 22V hold-up capacitors and charge management ICs in NVMe SSDs and enterprise SAS storage controllers. IC Role / Device Role / Timing Role: Surge clamp on 22V auxiliary power input used for capacitor charging and firmware update retention. Use Value: 175pF capacitance avoids signal integrity impact on adjacent high-speed SerDes lanes while providing certified 40A surge immunity per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, same DFN-6 package, identical marking and reel packaging - confirmed second-source replacement per Semtech documentation. | No functional or layout change required; pin-to-pin and footprint compatible. | Select when dual-sourcing or extended lead time mitigation is required without redesign. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, 12pF capacitance - optimized for CC/SBU lines, not power rails. | Not suitable for 22V VBUS protection due to lower surge rating and different clamping profile; intended for low-capacitance signal line use. | Choose only for auxiliary signal lines (CC, SBU) in same USB-C system - never as direct SC810ULTRT substitute on power paths. |
Compared with SC810ULTRT, TDS2211P offers identical protection performance and drop-in compatibility, while uClamp2411ZA serves a distinct low-capacitance signal-line role - making SC810ULTRT the sole validated solution for 22V power rail surge suppression requiring 40A capability and flat clamping.
Availability
SC810ULTRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, IoT edge node power rails, and storage device backup supplies requiring stable component supply with guaranteed long-term manufacturability.
Supply support for SC810ULTRT 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 signal integrity.
SC810ULTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where flat clamping and temperature stability are mandatory.
FAQ
What is the maximum continuous operating voltage for SC810ULTRT?
The SC810ULTRT has a reverse stand-off voltage (VRWM) of 22V, meaning it can safely operate on DC power rails up to 22V without significant leakage or unintended conduction. This makes SC810ULTRT ideal for USB PD 20V–22V bus protection and industrial 24V nominal systems operating within derated limits.
Does SC810ULTRT require a thermal pad on the PCB?
No, SC810ULTRT does not require a thermal pad. Its DFN-6 package dissipates surge energy through the integrated FET channel rather than a PN junction, eliminating the need for additional copper thermal relief. Layout guidelines specify connecting all GND pins (1–3) and IN pins (4–6) directly to solid planes using multiple vias - not a thermal pad.
Can SC810ULTRT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, SC810ULTRT is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on differential pairs. SC810ULTRT is strictly intended for 22V power or low-frequency I/O lines; for SuperSpeed lanes, Semtech recommends RClamp3371ZC (<0.25pF) instead.
How does SC810ULTRT's clamping behavior differ from standard TVS diodes?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), SC810ULTRT maintains ~27.5–28V clamping from 24A to 40A due to its FET-based shunt architecture and decreasing RDS(on). This eliminates design margin inflation and ensures predictable protection across temperature and surge magnitude.
Is SC810ULTRT compliant with RoHS and REACH regulations?
Yes, SC810ULTRT 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 it conforms to IPC-J-STD-020 MSL-1 for standard reflow processing without preconditioning.
SC810ULTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 6-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max:
- 1A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 8.2V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MLPD-UT (2x2)
SC810ULTRT FAQ
1.How can I place an order for SC810ULTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC810ULTRT 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 SC810ULTRT reliable?
The price and inventory of SC810ULTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC810ULTRT is usually 5 days.
3.What payment methods are accepted for SC810ULTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC810ULTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC810ULTRT?
SC810ULTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC810ULTRT 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 SC810ULTRT?
For technical support, including SC810ULTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC810ULTRT requirements.
6.How does Aetrix verify that SC810ULTRT is sourced from the original manufacturer or authorized distributors?
All SC810ULTRT 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 SC810ULTRT meets industry standards.
7.What is the process for return or replacement of SC810ULTRT?
All SC810ULTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC810ULTRT, 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 SC810ULTRT part is unused and in its original packaging.
Return procedure for SC810ULTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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