RT9741DGV Equivalent & Substitute Parts

Part Overview

The RT9741DGV is a Power Management IC (PMIC) functioning as an N-Channel power switch with 1:1 input-output ratio in a SOT-23-3 surface mount package. Designed for USB switching applications, this component operates across a 2.7V to 5.5V load voltage range with high-side output configuration and on/off interface control.

The RT9741DGV has reached obsolete product status. Identifying functionally equivalent substitute components is necessary to maintain design continuity and ensure supply chain availability for new production runs and legacy system support.

Substiute Parts

RT9741DGV

Richtek USA Inc.In Stock: 1158RT9741DGV Datasheet

Current PartRFQ

RT9742SNGV

Richtek USA Inc.In Stock: 155156RT9742SNGV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9741DGV is determined by strict alignment across the following critical parameters:

• Switch Type: USB Switch
• Number of Outputs: 1
• Input:Output Ratio: 1:1
• Output Configuration: High Side
• Output Type: N-Channel
• Interface: On/Off
• Package / Case: SOT-23-3 (TO-236-3, SC-59)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C (TA)
• RoHS Compliance: ROHS3 Compliant
• MSL Rating: 3 (168 Hours)

The RT9742SNGV meets all substitution criteria. Both components share identical core functional specifications, package geometry, and environmental compliance ratings. The primary distinction is product status: RT9742SNGV maintains active production status with enhanced feature set and improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The RT9742SNGV is the direct substitute for the obsolete RT9741DGV. Both components maintain identical package geometry (SOT-23-3), thermal operating range (-40°C to 85°C), and regulatory compliance (ROHS3 Compliant, MSL 3). The RT9742SNGV carries active product status with current manufacturing support and documented availability.

Selection of RT9742SNGV eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing PCB designs. The component is available in standard packaging formats (Cut Tape and Digi-Reel) suitable for both prototype and production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can RT9742SNGV be used as a direct replacement for RT9741DGV without PCB modification?

A: Yes. Both components share identical SOT-23-3 package geometry and pinout configuration. No PCB layout changes are required for substitution.

Q: What is the primary reason for substituting RT9741DGV?

A: RT9741DGV has reached obsolete product status. RT9742SNGV provides equivalent functionality with active manufacturing support and documented long-term availability.

Q: Are there differences in operating voltage ranges between these components?

A: RT9742SNGV supports a slightly extended load voltage range (2.7V ~ 6V) compared to RT9741DGV (2.7V ~ 5.5V). This represents an enhancement and does not restrict compatibility in applications designed for the original component.

Q: Do both components meet the same environmental compliance standards?

A: Yes. Both RT9741DGV and RT9742SNGV are ROHS3 Compliant with MSL Rating 3 (168 Hours), ensuring equivalent environmental qualification and handling requirements.

Q: What packaging options are available for RT9742SNGV?

A: RT9742SNGV is supplied in Cut Tape (CT) and Digi-Reel packaging formats, supporting both prototype development and high-volume production workflows.