S-T111B40MC-OGZTFU Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The S-T111B40MC-OGZTFU is an active linear voltage regulator IC from ABLIC Inc. designed for positive fixed output applications. This Surface Mount device delivers 150mA output current with a fixed 4V output and operates across the -40°C to 85°C temperature range. The part is ROHS3 compliant and currently in active production status with 866 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or when functionally identical alternatives from the same manufacturer are required for production flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	S-T111B40MC-OGZTFU
Manufacturer	ABLIC Inc.
Category	Power Management (PMIC)
Packaging	Cut Tape (CT)
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	4V
Voltage - Input (Max)	6.5V
Current - Output	150mA
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the S-T111B40MC-OGZTFU are identified based on strict electrical and mechanical parameter matching within the ABLIC Inc. product family. The substitution criteria are:

Primary Matching Parameters:

Output Configuration: Positive
Output Type: Fixed
Voltage - Output (Min/Fixed): 4V
Voltage - Input (Max): 6.5V
Current - Output: 150mA
Package / Case: SC-74A, SOT-753
Supplier Device Package: SOT-23-5
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C (TA)
RoHS Status: ROHS3 Compliant

All identified substitutes maintain these core electrical and mechanical specifications, ensuring direct functional equivalence in circuit applications. Variations in secondary parameters such as quiescent current, dropout voltage, and PSRR do not affect substitutability for applications designed around the primary specifications.

Parameter Comparison

Parameter	S-T111B40MC-OGZTFU	S-1122B40MC-L8ZTFU	S-1167B40-M5T1U
Manufacturer	ABLIC Inc.	ABLIC Inc.	ABLIC Inc.
Category	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)
Packaging	Cut Tape (CT)	Cut Tape (CT)	Cut Tape (CT)
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5
Output Configuration	Positive	Positive	Positive
Output Type	Fixed	Fixed	Fixed
Voltage - Output (Min/Fixed)	4V	4V	4V
Voltage - Input (Max)	6.5V	6.5V	6.5V
Current - Output	150mA	150mA	150mA
Voltage Dropout (Max)	0.26V @ 100mA	0.26V @ 100mA	0.21V @ 100mA
Current - Quiescent (Iq)	1 µA	1 µA	900 nA
Current - Supply (Max)	90 µA	90 µA	16 µA
PSRR	80dB (1kHz)	80dB (1kHz)	65dB (1kHz)
Control Features	Enable	Enable	Enable
Protection Features	Over Current	Over Current	Over Current
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Inventory (Pcs)	866	1101	3537

Engineering Selection Recommendations

All three parts—S-T111B40MC-OGZTFU, S-1122B40MC-L8ZTFU, and S-1167B40-M5T1U—are active products from ABLIC Inc. with identical compliance certifications: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited moisture sensitivity). All three are suitable for applications requiring a 4V fixed positive linear voltage regulator with 150mA output capacity in SOT-23-5 surface mount packaging.

Selection between these parts should be based on availability and supply chain requirements. The S-1167B40-M5T1U offers improved performance characteristics with lower quiescent current (900 nA vs. 1 µA) and reduced maximum supply current (16 µA vs. 90 µA), making it advantageous for battery-powered or low-power applications. The S-1122B40MC-L8ZTFU and S-T111B40MC-OGZTFU are electrically identical and interchangeable.

Frequently Asked Questions (FAQ)

Q: Can S-1122B40MC-L8ZTFU be used as a direct replacement for S-T111B40MC-OGZTFU?

A: Yes. Both parts are functionally identical across all primary electrical and mechanical parameters. They share the same 4V fixed output, 150mA current rating, 6.5V maximum input voltage, SOT-23-5 package, and operating temperature range. No circuit modifications are required.

Q: What are the differences between S-1167B40-M5T1U and the other two parts?

A: The S-1167B40-M5T1U maintains all primary electrical specifications but offers improved power efficiency characteristics. It features lower quiescent current (900 nA vs. 1 µA), reduced maximum supply current (16 µA vs. 90 µA), lower dropout voltage (0.21V vs. 0.26V at 100mA), and lower PSRR (65dB vs. 80dB at 1kHz). These differences do not affect substitutability but may provide advantages in low-power applications.

Q: Are all three parts available in the same packaging format?

A: Yes. All three parts use SC-74A, SOT-753 package / case designation with SOT-23-5 supplier device package. They are all surface mount components suitable for automated assembly processes.

Q: Do all parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity level ratings. They are suitable for applications with identical regulatory and environmental requirements.

Q: Which part should be selected for lowest power consumption?

A: The S-1167B40-M5T1U is the appropriate choice for applications prioritizing low power consumption. It provides the lowest quiescent current (900 nA) and maximum supply current (16 µA) among the three options.

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