MIC2550AYML-TR Equivalent & Substitute Parts

Part Overview

The MIC2550AYML-TR is a USB 2.0 half-duplex transceiver IC manufactured by Microchip Technology, designed for interface applications requiring single driver/receiver functionality. This component operates at 12 Mbps data rate with a supply voltage range of 4V to 5.25V and is housed in a 16-MLF® (4x4) surface mount package. The part maintains Active product status with full ROHS3 compliance and REACH unaffected classification.

Substitute parts become necessary when the primary part experiences inventory constraints, extended lead times, or when design flexibility permits selection from functionally equivalent alternatives within the same electrical and mechanical parameter set.

Substiute Parts

MIC2550AYML-TR

Microchip TechnologyIn Stock: 2383MIC2550AYML-TR Datasheet

Current PartRFQ

MIC2551AYML-TR

Microchip TechnologyIn Stock: 843MIC2551AYML-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC2550AYML-TR is determined by strict alignment with the following critical parameters:

• Protocol: USB 2.0
• Transceiver configuration: 1/1 (single driver/receiver)
• Duplex mode: Half
• Data rate: 12 Mbps
• Receiver hysteresis: 200 mV
• Supply voltage range: 4V ~ 5.25V
• Operating temperature range: -40°C ~ 85°C
• Package type: 16-MLF® (4x4) surface mount
• Electrical compliance: ROHS3 Compliant, REACH Unaffected

The MIC2551AYML-TR qualifies as a parametric equivalent substitute, meeting all electrical specifications and mechanical package requirements. Differences in product status, packaging format options, and moisture sensitivity classification do not affect functional interchangeability within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

The MIC2550AYML-TR is the preferred selection for new designs due to its Active product status and superior moisture sensitivity classification (MSL 2 vs. MSL 3). This provides extended shelf life and reduced risk of moisture-related failures during storage and handling.

The MIC2551AYML-TR remains functionally equivalent across all electrical and mechanical parameters but carries Obsolete product status. Selection of this substitute should be limited to applications where inventory availability is critical and design timelines do not permit sourcing the primary part. The higher moisture sensitivity level (MSL 3, 168 hours) requires stricter environmental controls during component storage and assembly operations.

Both parts maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected) and operate within the same electrical specifications, ensuring direct functional interchangeability at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can MIC2551AYML-TR be used as a direct replacement for MIC2550AYML-TR in production?

A: Yes, the MIC2551AYML-TR is electrically and mechanically equivalent. However, the Obsolete status of MIC2551AYML-TR and its higher moisture sensitivity level (MSL 3) require evaluation of supply chain risk and storage conditions before implementation.

Q: What is the significance of the different MSL ratings between these parts?

A: MSL 2 (1 Year) for MIC2550AYML-TR permits extended storage at room conditions without baking requirements. MSL 3 (168 Hours) for MIC2551AYML-TR requires component baking prior to reflow soldering if storage exceeds 168 hours in standard humidity conditions. This affects handling procedures and inventory management.

Q: Are the packaging formats interchangeable?

A: Both parts use identical 16-MLF® (4x4) surface mount packages. The MIC2550AYML-TR is supplied in Cut Tape (CT) format, while MIC2551AYML-TR is available in both Cut Tape (CT) and Digi-Reel® formats. Package footprints and pin configurations are identical, ensuring PCB design compatibility.

Q: What compliance certifications apply to both parts?

A: Both MIC2550AYML-TR and MIC2551AYML-TR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: Why would I select the substitute part if the primary part is available?

A: Selection of MIC2551AYML-TR is appropriate only when MIC2550AYML-TR experiences supply constraints, extended lead times, or inventory unavailability. The primary part's Active status and superior MSL rating make it the preferred choice for all new designs and production runs.