S-T111B20MC-OGFTFU Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The S-T111B20MC-OGFTFU is an active linear voltage regulator IC manufactured by ABLIC Inc., designed for positive fixed output applications. This Surface Mount Device (SMD) delivers 150mA output current at a fixed 2V output with a maximum dropout voltage of 0.35V at 100mA. The device operates across the industrial temperature range of -40°C to 85°C and includes integrated over-current protection and enable control features. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory optimization, and maintain design continuity when the primary component becomes unavailable.

Substiute Parts

S-T111B20MC-OGFTFU

ABLIC Inc.In Stock: 945S-T111B20MC-OGFTFU Datasheet

Current PartRFQ

XC6504A201MR-G

Torex Semiconductor LtdIn Stock: 1000XC6504A201MR-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S-T111B20MC-OGFTFU are identified based on strict parametric equivalence across the following critical criteria:

• Fixed output voltage of 2V
• Output current capability of 150mA
• Surface mount packaging in SOT-23-5 or compatible footprint
• Positive output configuration with single regulator
• Enable control and over-current protection features
• Operating temperature range of -40°C to 85°C
• Active product status with current manufacturing availability
• ROHS3 compliance and equivalent regulatory certifications

The XC6504A201MR-G from Torex Semiconductor Ltd meets these core substitution parameters and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the S-T111B20MC-OGFTFU and XC6504A201MR-G are active products with current manufacturing status and ROHS3 compliance. Selection between these parts should be based on the following engineering considerations:

The S-T111B20MC-OGFTFU offers superior dropout voltage performance at 0.35V compared to the XC6504A201MR-G at 1.2V, making it preferable for applications with tight input voltage margins or low headroom requirements. The S-T111B20MC-OGFTFU also provides specified PSRR of 80dB at 1kHz, which is relevant for noise-sensitive applications.

The XC6504A201MR-G presents a viable alternative when the primary part is unavailable, provided the application can tolerate the higher dropout voltage and slightly elevated quiescent current. Both devices maintain identical output voltage and current specifications, identical operating temperature range, and equivalent protection features.

Inventory availability should also factor into selection: the S-T111B20MC-OGFTFU has 875 pieces in stock, while the XC6504A201MR-G has 910 pieces available.

Frequently Asked Questions (FAQ)

Q: Can the XC6504A201MR-G directly replace the S-T111B20MC-OGFTFU in all applications?

A: The XC6504A201MR-G is a parametric equivalent for applications where the higher dropout voltage of 1.2V (versus 0.35V) is acceptable. Applications requiring minimal voltage headroom or operating near the input voltage limit may require the lower dropout voltage of the S-T111B20MC-OGFTFU.

Q: Are the package footprints identical between these two parts?

A: Both parts use SC-74A package designation. The S-T111B20MC-OGFTFU is specified as SOT-23-5, while the XC6504A201MR-G is specified as SOT-25. Verify footprint compatibility with your PCB design before substitution.

Q: Do both parts support the same control and protection features?

A: Yes. Both the S-T111B20MC-OGFTFU and XC6504A201MR-G include Enable control functionality and Over Current protection features.

Q: What is the significance of the PSRR specification difference?

A: The S-T111B20MC-OGFTFU specifies PSRR of 80dB at 1kHz. The XC6504A201MR-G does not provide PSRR specification in the available data. For applications requiring specified power supply rejection ratio performance, the S-T111B20MC-OGFTFU is the appropriate choice.

Q: Are both parts RoHS compliant?

A: Yes. Both the S-T111B20MC-OGFTFU and XC6504A201MR-G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.