FDG6342L Equivalent & Substitute Parts

Part Overview

The FDG6342L is a power switch/driver IC featuring a single P-channel output configuration rated for 1.5A maximum output current. Designed for high-side switching applications, this component operates across a load voltage range of 2.5V to 8V with a typical on-resistance of 125mOhm. The device is packaged in a 6-TSSOP (SC-88/SOT-363) surface mount package and operates across an extended temperature range of -55°C to 150°C.

The FDG6342L has reached obsolete product status. Identifying equivalent substitute components is necessary to maintain design continuity and ensure supply chain availability for new production runs and legacy system support.

Substiute Parts

FDG6342L

onsemiIn Stock: 9468FDG6342L Datasheet

Current PartRFQ

NTJD1155LT1G

onsemiIn Stock: 41496NTJD1155LT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FDG6342L is determined by the following critical parameters:

• Package Compatibility: Identical 6-TSSOP/SC-88/SOT-363 surface mount package
• Voltage Rating: Load voltage range must encompass or exceed 2.5V ~ 8V
• Current Capability: Output current rating must meet or exceed 1.5A
• On-Resistance: Rds On performance must be compatible with the 125mOhm baseline
• Temperature Range: Operating temperature must span -55°C ~ 150°C
• Channel Configuration: P-channel output for high-side switching applications

The NTJD1155LT1G qualifies as a substitute based on matching package geometry, exceeding voltage and current specifications, and maintaining the required temperature operating range.

Parameter Comparison

Engineering Selection Recommendations

The NTJD1155LT1G is available as an active product from onsemi with confirmed inventory of 41,400 pieces. Both components share identical package specifications and thermal operating ranges, enabling direct PCB layout compatibility without redesign.

The NTJD1155LT1G exhibits a maximum continuous drain current of 1.3A, which is 0.2A lower than the FDG6342L specification. Applications requiring the full 1.5A output current must be evaluated against actual load requirements. The on-resistance specification of 175mOhm (maximum) at 1.2A and 4.5V represents a 40mOhm increase compared to the FDG6342L typical value, resulting in proportionally higher power dissipation under maximum load conditions.

Both components maintain REACH compliance and carry identical moisture sensitivity ratings, supporting equivalent handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the NTJD1155LT1G be used as a direct replacement for the FDG6342L?

A: Physical and electrical compatibility exists within the specified package and temperature range. However, the reduced maximum continuous drain current (1.3A versus 1.5A) and increased on-resistance (175mOhm maximum versus 125mOhm typical) require verification against actual circuit load requirements and thermal dissipation budgets.

Q: Are there any PCB layout modifications required when substituting the NTJD1155LT1G?

A: No PCB layout modifications are necessary. Both components use identical 6-TSSOP/SC-88/SOT-363 package geometry with matching pin configurations and footprints.

Q: What is the significance of the on-resistance difference between these parts?

A: On-resistance directly affects power dissipation and voltage drop across the switch. The NTJD1155LT1G's 175mOhm maximum specification results in higher I²R losses compared to the FDG6342L's 125mOhm typical value. Circuit designs operating near maximum current ratings must account for this increased thermal load.

Q: Do both components require identical handling and storage procedures?

A: Yes. Both components carry Moisture Sensitivity Level 1 (Unlimited) ratings, indicating no special moisture control requirements during storage or handling.

Q: What is the product availability status for each component?

A: The FDG6342L is obsolete with no active manufacturing. The NTJD1155LT1G is an active product with 41,400 pieces currently in stock, providing reliable supply chain availability.