MIC5238-1.0BM5-TR Equivalent & Substitute Parts

Part Overview

The MIC5238-1.0BM5-TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 1V output at 150mA in a SOT-23-5 surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The device provides regulated 1V output with integrated over-current and over-temperature protection, suitable for low-power applications requiring stable voltage regulation.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Output Voltage (Fixed)	1V
Output Current	150mA
Input Voltage (Max)	6V
Voltage Dropout (Max)	0.5V @ 150mA
Quiescent Current	20 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature
Control Features	Enable

Substitute Part Grouping Explanation

Substitution for the MIC5238-1.0BM5-TR is determined by the following critical parameters:

Fixed output voltage of 1V
Output current capability of 150mA
Maximum input voltage of 5.5V to 6V
SOT-23-5 package compatibility
Operating temperature range of -40°C to 125°C
Enable control feature
Over-current and over-temperature protection

The substitute parts listed maintain these core electrical specifications and package requirements. Variations in voltage dropout, quiescent current, and PSRR performance are secondary parameters that do not prevent functional substitution when the primary criteria are met.

Parameter Comparison

Parameter	MIC5238-1.0BM5-TR	MIC5238-1.0YM5-TR	MIC5317-1.0YM5-T5	MIC5317-1.0YM5-TR	LD39015M10R
Manufacturer	Microchip	Microchip	Microchip	Microchip	STMicroelectronics
Output Voltage	1V	1V	1V	1V	1V
Output Current	150mA	150mA	150mA	150mA	150mA
Input Voltage (Max)	6V	6V	6V	6V	5.5V
Voltage Dropout (Max)	0.5V @ 150mA	0.5V @ 150mA	0.38V @ 150mA	0.38V @ 150mA	0.1V @ 100mA
Quiescent Current	20 µA	20 µA	39 µA	39 µA	50 µA
Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Discontinued	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MIC5238-1.0YM5-TR is the primary direct substitute for the MIC5238-1.0BM5-TR. Both parts share identical electrical specifications and are from the same manufacturer base product line. The MIC5238-1.0YM5-TR is currently active and ROHS3 compliant, addressing the compliance gap of the discontinued original part. Packaging differs only in tape format (Tape & Reel vs. Cut Tape & Digi-Reel), which does not affect electrical performance.

MIC5317-1.0YM5-T5 and MIC5317-1.0YM5-TR are parametric equivalents from Microchip Technology with improved voltage dropout performance (0.38V vs. 0.5V) and higher quiescent current (39 µA vs. 20 µA). Both are active and ROHS3 compliant. These parts are suitable for applications where lower dropout voltage provides operational advantage.

LD39015M10R from STMicroelectronics meets all core substitution criteria with superior voltage dropout performance (0.1V @ 100mA) and is ROHS3 compliant. The maximum input voltage is 5.5V rather than 6V, which may be a limiting factor in applications requiring the full 6V input range. This part is active and available.

For new designs or production requiring compliance certification, select from the active, ROHS3-compliant alternatives. For direct pin-compatible replacement with minimal design impact, MIC5238-1.0YM5-TR is the optimal choice.

Frequently Asked Questions (FAQ)

Q: Can MIC5238-1.0YM5-TR directly replace MIC5238-1.0BM5-TR?

A: Yes. Both parts have identical electrical specifications, output voltage, current rating, and SOT-23-5 package. The only difference is packaging format (tape type), which does not affect circuit performance or PCB layout.

Q: What is the difference between MIC5238 and MIC5317 series?

A: Both series provide 1V fixed output at 150mA in SOT-23-5 packages. The MIC5317 offers lower voltage dropout (0.38V vs. 0.5V) but has higher quiescent current (39 µA vs. 20 µA). Selection depends on whether dropout voltage or quiescent current is more critical for the application.

Q: Is LD39015M10R compatible with designs using MIC5238-1.0BM5-TR?

A: LD39015M10R is pin-compatible and meets all core electrical requirements. However, the maximum input voltage is 5.5V instead of 6V. Verify that your input voltage does not exceed 5.5V before substitution.

Q: Why is the original MIC5238-1.0BM5-TR discontinued?

A: The part is discontinued at DiGi Electronics. Active alternatives from the same manufacturer (MIC5238-1.0YM5-TR) and related series (MIC5317) are available for production continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (MIC5238-1.0YM5-TR, MIC5317-1.0YM5-T5, MIC5317-1.0YM5-TR, and LD39015M10R) are ROHS3 compliant. The original MIC5238-1.0BM5-TR is not ROHS3 compliant.

Q: What packaging options are available for these substitutes?

A: MIC5238-1.0YM5-TR is available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats. MIC5317-1.0YM5-T5 is available in Cut Tape (CT). MIC5317-1.0YM5-TR is available in Tape & Reel (TR). LD39015M10R is available in Cut Tape (CT) & Digi-Reel format. All use SOT-23-5 package.

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