NCP334FCT2G Equivalent & Substitute Parts

Part Overview

The NCP334FCT2G is a Power Switch/Driver IC manufactured by onsemi, designed as a 1:1 P-Channel high-side load switch with 2A output capability in a 4-WLCSP (0.76x0.76) package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates across a load voltage range of 1.2V to 5.5V with slew rate control features and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

NCP334FCT2G

onsemiIn Stock: 1336NCP334FCT2G Datasheet

Current PartRFQ

NCP335FCT2G

onsemiIn Stock: 42282NCP335FCT2G Datasheet

DirectRFQ

BUS1DJC0GWZ-E2

Rohm SemiconductorIn Stock: 7889BUS1DJC0GWZ-E2 Datasheet

SimilarRFQ

BUS1DJC3GWZ-E2

Rohm SemiconductorIn Stock: 12393BUS1DJC3GWZ-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the NCP334FCT2G is determined by the following critical parameters: output type (P-Channel high-side), maximum output current (2A), input:output ratio (1:1), load voltage range compatibility (1.2V ~ 5.5V minimum), and surface mount packaging. Parts are grouped into two categories based on these criteria:

Direct Substitute (Same Manufacturer): NCP335FCT2G maintains identical electrical specifications and functional characteristics with the same manufacturer (onsemi), differing only in package dimensions (0.96x0.96 vs 0.76x0.76) and product status (Active vs Obsolete).

Similar Substitutes (Alternative Manufacturer): BUS1DJC0GWZ-E2 and BUS1DJC3GWZ-E2 from Rohm Semiconductor provide equivalent P-Channel 2A high-side switching functionality with compatible load voltage ranges, though with variations in on-resistance, operating temperature range, and fault protection features.

Parameter Comparison

Engineering Selection Recommendations

NCP335FCT2G is the primary substitute for the NCP334FCT2G. Both parts are manufactured by onsemi with identical electrical specifications, RoHS3 compliance, and unlimited MSL rating. The NCP335FCT2G is currently in active production status, addressing the obsolescence of the original part. Package dimension differences (0.96x0.96 vs 0.76x0.76) require PCB layout verification but do not affect electrical compatibility.

BUS1DJC0GWZ-E2 from Rohm Semiconductor provides an alternative with superior on-resistance performance (58mOhm vs 38Ohm) and maintains RoHS3 compliance with unlimited MSL rating. This part is suitable for applications where the narrower operating temperature range (-30°C to 85°C) and different package footprint (UCSP30L1) are acceptable.

BUS1DJC3GWZ-E2 from Rohm Semiconductor includes short-circuit fault protection and operates within the same temperature and voltage parameters as BUS1DJC0GWZ-E2. The higher on-resistance (140mOhm) and MSL-3 rating (168 hours) require evaluation against specific application thermal and moisture exposure requirements.

Frequently Asked Questions (FAQ)

Q: Can NCP335FCT2G directly replace NCP334FCT2G without PCB modifications?

A: Electrical substitution is direct. However, the package dimension change from 0.76x0.76 to 0.96x0.96 requires PCB footprint verification. Pin-to-pin compatibility exists, but land pattern adjustments may be necessary depending on layout constraints.

Q: What are the key differences between onsemi and Rohm Semiconductor substitutes?

A: onsemi substitutes (NCP335FCT2G) maintain identical electrical performance and temperature range. Rohm substitutes (BUS1DJC0GWZ-E2, BUS1DJC3GWZ-E2) operate within a narrower temperature range (-30°C to 85°C ambient vs -40°C to 125°C junction) and use different package types (UCSP30L1 vs WLCSP). On-resistance values differ across all alternatives.

Q: Which substitute is recommended for high-temperature applications?

A: NCP335FCT2G maintains the original -40°C to 125°C (TJ) operating range. Rohm alternatives are limited to -30°C to 85°C (TA) and are not suitable for extended high-temperature operation.

Q: Does BUS1DJC3GWZ-E2 short-circuit protection affect circuit design?

A: Short-circuit fault protection is an additional feature that does not require circuit modifications. It provides enhanced protection without changing the basic switching functionality or pin configuration.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitutes are RoHS3 compliant. MSL ratings differ: NCP335FCT2G and BUS1DJC0GWZ-E2 have MSL-1 (unlimited), while BUS1DJC3GWZ-E2 has MSL-3 (168 hours), affecting moisture exposure handling during assembly.

Q: What is the impact of on-resistance differences on circuit performance?

A: On-resistance affects power dissipation and voltage drop across the switch. NCP334FCT2G and NCP335FCT2G both specify 38Ohm typical. BUS1DJC0GWZ-E2 (58mOhm) and BUS1DJC3GWZ-E2 (140mOhm) have lower on-resistance values, resulting in reduced power loss and heat generation at 2A output current.