S-T111B35MC-OGUTFG Equivalent & Substitute Parts

Part Overview

The S-T111B35MC-OGUTFG is a linear voltage regulator IC from ABLIC Inc. designed for positive fixed 4.6V output at 150mA in SOT-23-5 surface mount packaging. This part is classified as Not For New Designs, making identification of active equivalent alternatives essential for ongoing production and maintenance applications. The device provides Enable control and Over Current protection features suitable for low-power supply regulation in compact form factors.

Key Parameters

Parameter	Value
Manufacturer	ABLIC Inc.
Part Number	S-T111B35MC-OGUTFG
Category	Power Management (PMIC)
Output Voltage (Fixed)	4.6V
Output Current	150mA
Input Voltage (Max)	6.5V
Voltage Dropout (Max)	0.26V @ 100mA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature	-40°C ~ 85°C
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Output voltage (4.6V fixed)
Output current capability (150mA minimum)
Input voltage range (6.5V maximum)
Package type (SOT-23-5 surface mount)
Control features (Enable function)
Protection features (Over Current)
Operating temperature range (-40°C ~ 85°C)
Compliance certifications (ROHS3, REACH Unaffected)

Substitute parts are grouped into two categories: ABLIC Inc. series variants with identical electrical specifications and active product status, and cross-manufacturer alternatives meeting the same functional requirements.

Parameter Comparison

Parameter	S-T111B35MC-OGUTFG	S-1112B35MC-L6UTFU	S-1122B35MC-L8UTFU	S-1167B35-M5T1U	S-T111B35MC-OGUTFU	XC6504A351MR-G
Manufacturer	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.	Torex Semiconductor Ltd
Output Voltage	4.6V	4.6V	4.6V	4.6V	4.6V	4.6V
Output Current	150mA	150mA	150mA	150mA	150mA	150mA
Input Voltage (Max)	6.5V	6.5V	6.5V	6.5V	6.5V	6V
Voltage Dropout (Max)	0.26V @ 100mA	0.26V @ 100mA	0.26V @ 100mA	0.21V @ 100mA	0.26V @ 100mA	0.59V @ 150mA
Quiescent Current	1 µA	1 µA	1 µA	900 nA	1 µA	1.5 µA
Package Type	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-25
Product Status	Not For New Designs	Active	Active	Active	Active	Active
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using S-T111B35MC-OGUTFG, the following substitution path is recommended based on product status and compliance:

Primary Substitutes (ABLIC Inc., Active Status): S-T111B35MC-OGUTFU, S-1112B35MC-L6UTFU, and S-1122B35MC-L8UTFU provide direct electrical equivalence with identical specifications and active product status. These parts maintain full compatibility with existing designs and offer continued supply availability.

Enhanced Performance Alternative (ABLIC Inc., Active Status): S-1167B35-M5T1U offers improved performance characteristics including lower voltage dropout (0.21V vs 0.26V) and reduced quiescent current (900nA vs 1µA), while maintaining all other functional parameters and active product status.

Cross-Manufacturer Alternative (Torex Semiconductor Ltd, Active Status): XC6504A351MR-G provides functional equivalence with identical output voltage, current, and operating temperature range. Note the reduced maximum input voltage (6V vs 6.5V) and increased voltage dropout (0.59V @ 150mA). Package variant is SOT-25 instead of SOT-23-5, requiring PCB layout modification.

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can S-1167B35-M5T1U replace S-T111B35MC-OGUTFG directly?

A: Yes. S-1167B35-M5T1U meets all functional requirements with improved dropout voltage and lower quiescent current. The part is pin-compatible in SOT-23-5 packaging and maintains identical output voltage, current rating, and operating temperature range.

Q: What is the key difference between ABLIC substitutes and the Torex XC6504A351MR-G?

A: The XC6504A351MR-G uses SOT-25 packaging instead of SOT-23-5, requiring PCB layout changes. Additionally, maximum input voltage is reduced to 6V and dropout voltage is higher at 0.59V @ 150mA. Select this part only if PCB redesign is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the original part.

Q: Why is S-T111B35MC-OGUTFG marked as Not For New Designs?

A: This designation indicates the part is in mature or end-of-life status. Active alternatives such as S-T111B35MC-OGUTFU and S-1112B35MC-L6UTFU should be used for new designs while maintaining supply for existing applications.

Q: Can I use XC6504A351MR-G in a space-constrained application?

A: XC6504A351MR-G uses SOT-25 packaging, which is larger than SOT-23-5. Verify PCB footprint compatibility before selection. If space is critical, maintain SOT-23-5 alternatives from ABLIC Inc.

Q: What is the inventory status of substitute parts?

A: S-1112B35MC-L6UTFU has 823 units, S-1122B35MC-L8UTFU has 1091 units, S-1167B35-M5T1U has 1117 units, S-T111B35MC-OGUTFU has 766 units, and XC6504A351MR-G has 1131 units available as new original stock.

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