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Taiwan Semiconductor Corporation SK110B R5G
- Part No.:
- SK110B R5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK110B R5G.pdf
- Description:
- DIODE SCHOTTKY 100V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:480
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Product details
Overview
SK110B R5G from Taiwan Semiconductor is a 1A, 100V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, featuring 0.85V forward voltage at 1A and 100µA reverse leakage at 25°C, optimized for high-efficiency switching power supplies and lighting converters.
For engineers reviewing the SK110B R5G datasheet, SK110B R5G pinout, SK110B R5G application, or SK110B R5G equivalent, key selection criteria include its 100V VRRM, 30A IFSM surge rating, 125°C maximum junction temperature, and SMB package compatibility with automated SMT assembly.
Technical Context
The SK110B R5G implements a single-die Schottky junction structure with guard ring overvoltage protection, enabling fast recovery and low conduction loss. Its 10,000 V/µs dV/dt rating supports stable operation in high-frequency SMPS topologies.
Thermal performance is defined by a 25°C/W junction-to-lead thermal resistance and operation up to 125°C junction temperature, with moisture sensitivity level 1 per J-STD-020 - eliminating bake requirements prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage; defines usable input range in DC-DC converters and adapters |
| IF | 1 A continuous - rated average forward current; determines steady-state power handling capability |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush and transient overload events |
| VF | 0.85 V @ 1 A, 25°C - low forward drop improves system efficiency and reduces thermal load |
| IR | 100 µA @ 100 V, 25°C - low reverse leakage preserves standby power integrity in energy-sensitive designs |
| TJ max | 125°C - maximum operating junction temperature; enables use in compact, thermally constrained enclosures |
| RθJL | 25°C/W - junction-to-lead thermal resistance; informs heatsinking strategy for sustained 1A operation |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with matte tin-plated leads, cathode indicated by band, weight ≈0.093 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectification configuration |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connects to output rail in buck/flyback secondary-side rectification |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against voltage transients and improves reliability in noisy power environments |
| Moisture sensitivity level 1 | Eliminates pre-reflow baking; supports standard JEDEC-compliant SMT processes without special handling |
| UL 94V-0 molding compound | Meets flame-retardant safety requirements for industrial and consumer end equipment |
| RoHS & halogen-free compliance | Fulfills environmental regulations (IEC 61249-2-21) for global market access and green manufacturing |
Applications
| Switching Mode Power Supply (SMPS) | LED Lighting Driver |
|---|---|
Use Scenario: Secondary-side rectification in 12–48 V output flyback or forward converters delivering up to 12 W. IC Role / Device Role / Timing Role: Uncontrolled rectifier replacing slower PN diodes to reduce conduction loss and improve efficiency. Use Value: 0.85 V VF lowers power dissipation by ~35% vs. comparable 1A fast recovery diodes, reducing heatsink need. | Use Scenario: Constant-current LED string rectification in offline AC-DC drivers for commercial downlights. IC Role / Device Role / Timing Role: Output rectifier in isolated buck-boost or SEPIC-derived topologies operating at 25–100 kHz. Use Value: 100 µA IR at 25°C minimizes no-load leakage, improving standby power compliance (<0.5 W). |
| Laptop Adapter Secondary Rectifier | Industrial DC-DC Converter Input Protection |
Use Scenario: 19 V/2.1 A output rectification in compact external AC-DC adapters with tight thermal margins. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 1 A load with peak surges during plug-in events. Use Value: 30 A IFSM withstands repeated 100-ms inrush pulses without degradation, extending adapter lifetime. | Use Scenario: Reverse polarity and backfeed protection on 24 V input rails of programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Low-loss series blocking diode preventing damage from miswired field wiring or hot-swap events. Use Value: 100 V VRRM provides 2× margin over 24 V nominal, while SMB footprint fits dense control board layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS110H from Diodes Inc. | Same 100 V VRRM, 1 A IF, but VF = 0.82 V @ 1 A; SMB package, RoHS/halogen-free | Slightly lower VF improves efficiency marginally; identical thermal and surge specs support direct functional substitution | Preferred where sub-30 mV VF reduction justifies alternate sourcing |
| SB1100 from ON Semiconductor | 100 V VRRM, 1 A IF, VF = 0.87 V @ 1 A; DO-214AA package, but IR = 200 µA @ 25°C | Higher reverse leakage may impact ultra-low-power standby designs; otherwise matches mechanical and electrical envelope | Valid alternative when leakage tolerance >100 µA and supply chain diversification is required |
Compared with SS110H and SB1100, the SK110B R5G offers a balanced trade-off: lower leakage than SB1100 and tighter VF consistency across temperature, making it optimal for thermally constrained, efficiency-critical SMPS outputs.
Availability
SK110B R5G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial DC-DC converters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for SK110B R5G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power management and industrial markets since 1979.
The SK110B R5G belongs to TSC's SK1xB family of Schottky rectifiers designed specifically for high-efficiency, cost-sensitive AC-DC and DC-DC conversion in consumer, industrial, and lighting applications.
FAQ
What is the maximum junction temperature rating for the SK110B R5G?
The SK110B R5G has a maximum junction temperature (TJ) rating of 125°C under continuous operation. This specification allows reliable deployment in enclosed power supplies and LED drivers where ambient temperatures reach 85°C and PCB self-heating adds thermal margin pressure. The SK110B R5G must not exceed this limit to maintain long-term parametric stability and avoid accelerated degradation.
Does the SK110B R5G have a lead-free and halogen-free construction?
Yes, the SK110B R5G is fully RoHS compliant and halogen-free per IEC 61249-2-21. Its matte tin-plated leads meet J-STD-002 solderability standards, and the UL 94V-0 molding compound contains no brominated flame retardants. These attributes ensure compliance with EU, China RoHS, and Japan J-Moss regulations for global product certification.
What is the forward voltage of the SK110B R5G at 1 A and 125°C junction temperature?
The SK110B R5G datasheet specifies forward voltage only at 25°C (0.85 V max @ 1 A). While VF decreases slightly with rising temperature in Schottky diodes, no guaranteed value is published at 125°C. Designers should apply derating curves from Figure 4 and Figure 10 in the SK1xB datasheet to estimate VF at elevated TJ for the SK110B R5G.
Is the SK110B R5G suitable for use in automotive applications?
The SK110B R5G is not qualified to AEC-Q101 and is not recommended for automotive powertrain or safety-critical systems. It is rated for industrial and commercial temperature ranges (−55°C to +125°C), but lacks automotive-specific qualification testing such as HTOL, ESD, and vibration. For automotive body electronics with relaxed reliability requirements, engineering validation is required before using the SK110B R5G.
What packaging format is available for the SK110B R5G?
The SK110B R5G is supplied in tape-and-reel packaging: 3,000 units per reel, compatible with standard 8 mm wide SMT feeders. The DO-214AA (SMB) package features a cathode band marking and conforms to JEDEC DO-214 variation AA dimensions. Reel specifications follow EIA-481-D standards, ensuring seamless integration into high-volume automated assembly lines.
SK110B R5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK110B R5G FAQ
1.How can I place an order for SK110B R5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK110B R5G 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 SK110B R5G reliable?
The price and inventory of SK110B R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK110B R5G is usually 5 days.
3.What payment methods are accepted for SK110B R5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK110B R5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK110B R5G?
SK110B R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK110B R5G 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 SK110B R5G?
For technical support, including SK110B R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK110B R5G requirements.
6.How does Aetrix verify that SK110B R5G is sourced from the original manufacturer or authorized distributors?
All SK110B R5G 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 SK110B R5G meets industry standards.
7.What is the process for return or replacement of SK110B R5G?
All SK110B R5G units undergo pre-shipment inspection (PSI). If there is an issue with SK110B R5G, 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 SK110B R5G part is unused and in its original packaging.
Return procedure for SK110B R5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK110B R5G Tags
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