S-T111B17MC-OGCTFG Equivalent & Substitute Parts

Part Overview

The S-T111B17MC-OGCTFG is a linear voltage regulator IC from ABLIC Inc. designed for positive fixed output applications. This Surface Mount device delivers 150mA output current at a fixed 1.7V output voltage in a compact SOT-23-5 package. The part is classified as Not For New Designs, making identification of active equivalent alternatives essential for ongoing production and new project implementations.

Key Parameters

Parameter	Value
Manufacturer	ABLIC Inc.
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.7V
Output Current	150mA
Input Voltage (Max)	6.5V
Voltage Dropout (Max)	0.47V @ 100mA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature	-40°C ~ 85°C
Control Features	Enable
Protection Features	Over Current
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the S-T111B17MC-OGCTFG are classified based on strict electrical and mechanical parameter alignment:

Primary Substitutes (ABLIC Inc. Series): Parts S-1112B17MC-L6CTFU, S-1122B17MC-L8CTFU, S-T111B17MC-OGCTFU, and S-1167B17-M5T1U share identical output voltage (1.7V), output current (150mA), input voltage maximum (6.5V), package type (SOT-23-5), operating temperature range (-40°C ~ 85°C), and control/protection features. These parts maintain full electrical and mechanical compatibility with the original design.

Secondary Substitute (Cross-Manufacturer): RP130N171D-TR-FE from Nisshinbo Micro Devices Inc. matches all critical parameters including output voltage, current, input voltage, package, and temperature range, with minor differences in quiescent current and dropout voltage specifications.

Alternative Substitute (Different Manufacturer): XC6504A171MR-G from Torex Semiconductor Ltd provides equivalent output voltage and current specifications but operates at a reduced maximum input voltage (6V vs. 6.5V) and exhibits higher dropout voltage (1.47V @ 150mA vs. 0.47V @ 100mA).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	Package	Product Status
S-T111B17MC-OGCTFG	ABLIC Inc.	1.7V	150mA	6.5V	0.47V @ 100mA	1 µA	SOT-23-5	Not For New Designs
S-1112B17MC-L6CTFU	ABLIC Inc.	1.7V	150mA	6.5V	0.47V @ 100mA	1 µA	SOT-23-5	Active
S-1122B17MC-L8CTFU	ABLIC Inc.	1.7V	150mA	6.5V	0.47V @ 100mA	1 µA	SOT-23-5	Active
S-T111B17MC-OGCTFU	ABLIC Inc.	1.7V	150mA	6.5V	0.47V @ 100mA	1 µA	SOT-23-5	Active
S-1167B17-M5T1U	ABLIC Inc.	1.7V	150mA	6.5V	0.58V @ 100mA	900 nA	SOT-23-5	Active
RP130N171D-TR-FE	Nisshinbo Micro Devices Inc.	1.7V	150mA	6.5V	0.68V @ 150mA	58 µA	SOT-23-5	Active
XC6504A171MR-G	Torex Semiconductor Ltd	1.7V	150mA	6V	1.47V @ 150mA	1.27 µA	SOT-25	Active

Engineering Selection Recommendations

For direct replacement of the S-T111B17MC-OGCTFG in existing designs, S-1112B17MC-L6CTFU, S-1122B17MC-L8CTFU, and S-T111B17MC-OGCTFU are preferred selections. All three maintain identical electrical specifications and Active product status, ensuring long-term availability and supply chain continuity.

S-1167B17-M5T1U offers an Active alternative with marginally higher dropout voltage (0.58V vs. 0.47V) but reduced quiescent current (900 nA vs. 1 µA), suitable for applications where lower standby power consumption is beneficial.

RP130N171D-TR-FE from Nisshinbo Micro Devices Inc. provides cross-manufacturer compatibility with equivalent core specifications. Higher quiescent current (58 µA) and increased dropout voltage (0.68V @ 150mA) may impact power efficiency in low-input-voltage or high-current scenarios.

XC6504A171MR-G from Torex Semiconductor Ltd operates at reduced maximum input voltage (6V) and exhibits significantly higher dropout voltage (1.47V @ 150mA). This part is suitable only for applications with input voltage limited to 6V or lower and where higher dropout voltage is acceptable.

All substitute parts maintain ROHS3 compliance and SOT-23-5 package compatibility with the original design, except XC6504A171MR-G which uses SOT-25 packaging.

Frequently Asked Questions (FAQ)

Q: Can S-1167B17-M5T1U be used as a direct replacement for S-T111B17MC-OGCTFG?

A: Yes. Both parts deliver 1.7V at 150mA with identical input voltage maximum (6.5V), operating temperature range (-40°C ~ 85°C), and SOT-23-5 packaging. The S-1167B17-M5T1U exhibits slightly higher dropout voltage (0.58V vs. 0.47V @ 100mA) and lower quiescent current (900 nA vs. 1 µA). Verify that the application's input voltage margin accommodates the additional 0.11V dropout before implementation.

Q: What is the key difference between ABLIC Inc. substitutes and the Nisshinbo RP130N171D-TR-FE?

A: All parts share identical output voltage, current, and package specifications. The RP130N171D-TR-FE exhibits higher quiescent current (58 µA vs. 1 µA for ABLIC parts) and increased dropout voltage (0.68V @ 150mA). For applications sensitive to standby power consumption or operating near minimum input voltage, ABLIC alternatives are preferred.

Q: Why is XC6504A171MR-G listed as a substitute if it has different specifications?

A: XC6504A171MR-G maintains the core functional requirements: 1.7V fixed output, 150mA current capacity, and SOT-23-5 package compatibility. However, its reduced maximum input voltage (6V vs. 6.5V) and significantly higher dropout voltage (1.47V @ 150mA) restrict its use to applications with input voltage ≤6V and where higher voltage drop is acceptable.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original S-T111B17MC-OGCTFG specification.

Q: What packaging consideration applies to XC6504A171MR-G?

A: XC6504A171MR-G uses SOT-25 packaging, while all other substitutes use SOT-23-5. Verify PCB layout and footprint compatibility before selection. SOT-25 and SOT-23-5 are not pin-compatible without design modification.

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