MIC5239-1.5BS TR Equivalent & Substitute Parts

Part Overview

The MIC5239-1.5BS TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 1.5V output at 500mA in SOT-223-3 surface mount packaging. This device provides regulated power with integrated protection features including over-current, over-temperature, over-voltage, and reverse polarity protection. The part is currently listed as obsolete, making identification of active equivalent alternatives essential for ongoing production and design continuity.

Substiute Parts

MIC5239-1.5BS TR

Microchip TechnologyIn Stock: 785MIC5239-1.5BS TR Datasheet

Current PartRFQ

MIC5239-1.5YS-TR

Microchip TechnologyIn Stock: 3252MIC5239-1.5YS-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MIC5239-1.5YS-TR qualifies as a parametric equivalent based on the following criteria:

Matching Electrical Parameters:

• Output voltage: 1.5V fixed
• Output current: 500mA
• Input voltage maximum: 30V
• Voltage dropout: 0.35V @ 500mA (Typ)
• Quiescent current: 45 µA
• Operating temperature range: -40°C to 125°C
• Control features: Enable function
• Protection features: Over Current, Over Temperature, Over Voltage, Reverse Polarity

Matching Mechanical Parameters:

• Package type: SOT-223-3
• Mounting type: Surface Mount
• Packaging format: Tape & Reel (TR)

Key Difference:

• Product status: MIC5239-1.5YS-TR is Active (vs. Obsolete for MIC5239-1.5BS TR)
• RoHS compliance: MIC5239-1.5YS-TR is ROHS3 Compliant (vs. RoHS non-compliant for MIC5239-1.5BS TR)

Parameter Comparison

Engineering Selection Recommendations

The MIC5239-1.5YS-TR is the direct active equivalent for the obsolete MIC5239-1.5BS TR. All electrical and mechanical parameters are identical, ensuring functional compatibility in existing circuit designs without modification.

The primary advantages of selecting MIC5239-1.5YS-TR are:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance meets current environmental and regulatory requirements
• Identical electrical performance and package footprint enable direct substitution
• Higher inventory availability (3157 Pcs vs. 770 Pcs) supports production schedules

No design changes, PCB modifications, or firmware updates are required when transitioning from MIC5239-1.5BS TR to MIC5239-1.5YS-TR.

Frequently Asked Questions (FAQ)

Q: Can MIC5239-1.5YS-TR be used as a direct replacement for MIC5239-1.5BS TR?

A: Yes. All electrical specifications, output voltage, current ratings, protection features, and SOT-223-3 package dimensions are identical. No circuit modifications are necessary.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). The electrical and mechanical performance are equivalent.

Q: Are there any PCB layout considerations when switching to MIC5239-1.5YS-TR?

A: No. Both parts use the same SOT-223-3 package with identical pin configuration and footprint. Existing PCB designs require no modification.

Q: Does the MSL rating differ between these parts?

A: No. Both parts have MSL rating 3 (168 Hours), requiring identical moisture control and handling procedures.

Q: Which part should be specified for new designs?

A: MIC5239-1.5YS-TR should be specified for all new designs due to its active product status and ROHS3 compliance.