S-1112B43PI-L7CTFG Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The S-1112B43PI-L7CTFG is a linear voltage regulator IC from ABLIC Inc. designed for positive fixed output applications. This device delivers 150mA output current at a fixed 4.3V output voltage with a maximum dropout voltage of 0.26V at 100mA. The part is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. Alternative parts must maintain electrical compatibility across critical parameters including output voltage, current capacity, and thermal performance.

Substiute Parts

S-1112B43PI-L7CTFG

ABLIC Inc.In Stock: 1060S-1112B43PI-L7CTFG Datasheet

Current PartRFQ

S-1112B43PI-L7CTFU

ABLIC Inc.In Stock: 857S-1112B43PI-L7CTFU Datasheet

DirectRFQ

S-1167B43-I6T2U

ABLIC Inc.In Stock: 1272S-1167B43-I6T2U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S-1112B43PI-L7CTFG are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Critical Matching Parameters:

• Output voltage: 4.3V fixed
• Output current capacity: 150mA minimum
• Input voltage maximum: 6.5V
• Package type: 6-SMD, Flat Leads (SNT-6A)
• Operating temperature range: -40°C to 85°C
• Control features: Enable function
• Protection features: Over Current protection

Substitution Categories:

Direct Packaging Substitute: S-1112B43PI-L7CTFU differs from the main part only in packaging format (Tape & Reel vs. standard packaging). All electrical specifications remain identical, making this a direct functional equivalent.

Parametric Equivalent: S-1167B43-I6T2U represents a newer series device with improved electrical characteristics. While belonging to a different base series (S-1167 vs. S-1112), it maintains all critical electrical parameters and package compatibility. This part demonstrates enhanced performance in quiescent current and dropout voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Electrical Performance): Select S-1112B43PI-L7CTFU when the main part S-1112B43PI-L7CTFG is unavailable. This part maintains identical electrical specifications and package compatibility. The only difference is the packaging format (Tape & Reel), which does not affect circuit performance. This part is currently in active production status with 824 units in stock.

For Enhanced Performance Alternative: Select S-1167B43-I6T2U when improved power efficiency is beneficial. This parametric equivalent offers superior performance characteristics including lower dropout voltage (0.21V vs. 0.26V), reduced quiescent current (900nA vs. 1µA), and significantly lower supply current (16µA vs. 90µA). All critical electrical parameters remain compatible with the original design. This part is in active production status with 1231 units in stock.

Both substitute parts maintain full ROHS3 compliance and identical thermal operating ranges, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can S-1112B43PI-L7CTFU be used as a direct replacement for S-1112B43PI-L7CTFG? A: Yes. Both parts are electrically identical with matching output voltage (4.3V), output current (150mA), dropout voltage (0.26V @ 100mA), and package type (SNT-6A). The only difference is packaging format. No circuit modifications are required.

Q: What are the advantages of using S-1167B43-I6T2U instead of the original part? A: The S-1167B43-I6T2U offers improved power efficiency with lower dropout voltage (0.21V vs. 0.26V), reduced quiescent current (900nA vs. 1µA), and significantly lower supply current (16µA vs. 90µA). These improvements reduce power dissipation and heat generation while maintaining full electrical compatibility.

Q: Are all substitute parts available in the same package? A: Yes. All three parts use the 6-SMD, Flat Leads package (SNT-6A), ensuring identical PCB footprint and mounting compatibility. No layout modifications are necessary.

Q: Do the substitute parts meet the same compliance standards? A: Yes. Both S-1112B43PI-L7CTFU and S-1167B43-I6T2U are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status.

Q: What is the difference between the S-1112 and S-1167 series? A: The S-1167 series represents a newer generation with improved electrical characteristics, particularly in quiescent current and supply current performance. Both series maintain identical output voltage, current capacity, and package compatibility for this 4.3V 150mA regulator configuration.

Q: Can I use S-1167B43-I6T2U in a design originally specified for S-1112B43PI-L7CTFG? A: Yes. The S-1167B43-I6T2U maintains all critical electrical parameters and package compatibility. The improved performance characteristics (lower dropout voltage and reduced quiescent current) are beneficial and do not introduce compatibility issues.