XC6501A18AMR-G Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The XC6501A18AMR-G is an active linear voltage regulator IC manufactured by Torex Semiconductor Ltd, designed for positive fixed output applications. This Surface Mount device delivers 200mA output current at a fixed 1.85V output voltage with a maximum dropout voltage of 0.47V at full load. The regulator features enable control and over-current protection, operating across the industrial temperature range of -40°C to 85°C. The device is housed in an SOT-25 package (SC-74A, SOT-753) and is ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent substitute parts are identified when they maintain identical electrical performance specifications across critical parameters including output voltage, output current capacity, dropout voltage characteristics, and control features, while accommodating standard package variations within the same mechanical footprint classification.

Substiute Parts

XC6501A18AMR-G

Torex Semiconductor LtdIn Stock: 819XC6501A18AMR-G Datasheet

Current PartRFQ

S-1315A1J-M5T1U3

ABLIC Inc.In Stock: 992S-1315A1J-M5T1U3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XC6501A18AMR-G are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Critical Matching Parameters:

• Output voltage fixed at 1.85V
• Output current capacity of 200mA
• Positive output configuration with single regulator
• Maximum input voltage tolerance (6V or higher)
• Dropout voltage performance at rated load (≤0.47V @ 200mA or equivalent)
• Enable control feature and over-current protection
• Operating temperature range -40°C to 85°C
• Surface mount technology with compatible package footprint (SOT-25 or SOT-23-5)
• ROHS3 compliance and MSL Level 1 rating

The S-1315A1J-M5T1U3 from ABLIC Inc. qualifies as a parametric equivalent based on these criteria. While packaging differs between tape & reel (TR) and cut tape (CT) formats, both devices utilize compatible SOT-format packages (SOT-753 classification) suitable for identical PCB footprints.

Parameter Comparison

Engineering Selection Recommendations

XC6501A18AMR-G Selection Criteria:

• Primary choice when maximum input voltage tolerance of 6V is required
• Preferred for applications requiring standard quiescent current specifications
• Suitable for designs with existing Torex component qualification
• Tape & reel packaging appropriate for high-volume automated assembly

S-1315A1J-M5T1U3 Selection Criteria:

• Suitable for applications with maximum input voltage of 5.5V or lower
• Preferred for battery-powered or low-power applications due to 1µA quiescent current versus 18µA
• Superior PSRR performance (60dB vs 50dB at 1kHz) benefits noise-sensitive analog circuits
• Cut tape packaging appropriate for lower-volume or mixed-component procurement
• Identical compliance certifications (ROHS3, REACH Unaffected) ensure regulatory equivalence

Both devices maintain identical output voltage, output current, control features, protection features, operating temperature range, and package footprint. Selection between these parts depends on input voltage requirements and quiescent current performance needs within the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the S-1315A1J-M5T1U3 directly replace the XC6501A18AMR-G in all applications?

A: The S-1315A1J-M5T1U3 is electrically equivalent for applications where the input voltage does not exceed 5.5V. The XC6501A18AMR-G supports up to 6V input, so substitution is not appropriate for circuits requiring the full 6V input tolerance. Both devices are mechanically compatible with identical SOT-753 package footprints.

Q: What is the significance of the quiescent current difference between these parts?

A: The XC6501A18AMR-G draws 18µA quiescent current while the S-1315A1J-M5T1U3 draws 1µA. In battery-powered applications or designs with strict power budget constraints, the lower quiescent current of the ABLIC device provides measurable power savings. For line-powered applications, this difference is typically negligible.

Q: Are the packaging formats interchangeable?

A: Both devices use compatible SOT-25 package formats (SC-74A, SOT-753 classification) with identical PCB footprints. The XC6501A18AMR-G is supplied in tape & reel format suitable for automated pick-and-place assembly, while the S-1315A1J-M5T1U3 is supplied in cut tape format. The physical component dimensions and pin configuration are identical.

Q: Does the PSRR difference affect circuit performance?

A: The S-1315A1J-M5T1U3 provides 60dB PSRR at 1kHz compared to 50dB for the XC6501A18AMR-G. This 10dB improvement in power supply rejection ratio benefits applications requiring superior noise filtering, particularly in audio, precision measurement, or RF circuits. For general-purpose applications, both specifications are adequate.

Q: Are both parts compliant with current environmental regulations?

A: Both the XC6501A18AMR-G and S-1315A1J-M5T1U3 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations. Both devices carry MSL Level 1 (unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Q: What is the dropout voltage performance difference?

A: The XC6501A18AMR-G exhibits 0.47V dropout at 200mA load, while the S-1315A1J-M5T1U3 exhibits 0.486V dropout at the same load. This 0.016V difference is negligible for most applications. Both devices maintain adequate headroom for typical 1.85V output regulation with standard input voltage supplies.