NCP302LSN20T1G Equivalent & Substitute Parts

Part Overview

The NCP302LSN20T1G is a single-channel power management supervisor IC manufactured by onsemi, designed for reset and power-on reset applications. This device features push-pull, totem pole output configuration with a 2V voltage threshold and adjustable/selectable reset timeout. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

NCP302LSN20T1G

onsemiIn Stock: 20349NCP302LSN20T1G Datasheet

Current PartRFQ

BU4320G-TR

Rohm SemiconductorIn Stock: 18938BU4320G-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP302LSN20T1G is determined by strict equivalence across the following critical parameters:

• Functional Type: Simple Reset/Power-On Reset supervisor with single-channel voltage monitoring
• Voltage Threshold: 2V monitoring threshold
• Output Configuration: Push-Pull, Totem Pole output stage
• Reset Logic: Active Low reset signal
• Reset Timeout: Adjustable/Selectable timeout capability
• Operating Temperature Range: -40°C ~ 125°C (TA)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected
• Moisture Sensitivity: MSL 1 (Unlimited)

The BU4320G-TR from Rohm Semiconductor meets all these criteria and is classified as an active product, providing functional and electrical equivalence for the obsolete NCP302LSN20T1G.

Parameter Comparison

Engineering Selection Recommendations

The BU4320G-TR is the qualified substitute for the NCP302LSN20T1G based on functional and electrical parameter equivalence. The primary distinction is product status: the NCP302LSN20T1G is obsolete, while the BU4320G-TR is active and currently in production.

Both devices maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected) and moisture sensitivity ratings (MSL 1). The package form factors differ (5-TSOP versus 5-SSOP), requiring PCB layout verification to confirm mechanical compatibility. Both packages are surface-mount, five-pin configurations suitable for standard assembly processes.

The BU4320G-TR is available in Tape & Reel packaging format, supporting high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: What makes the BU4320G-TR a valid substitute for the NCP302LSN20T1G?

A: Both devices are single-channel power management supervisors with identical electrical specifications: 2V voltage threshold, push-pull totem pole output, active low reset logic, adjustable/selectable reset timeout, and -40°C to 125°C operating temperature range. Functional equivalence is established across all monitored parameters.

Q: Are there package compatibility considerations?

A: Yes. The NCP302LSN20T1G uses a 5-TSOP (SOT-23-5 Thin) package, while the BU4320G-TR uses a 5-SSOP (SC-74A, SOT-753) package. Although both are five-pin surface-mount packages, pin spacing and footprint dimensions differ. PCB layout and schematic verification is required before implementation.

Q: Why is the NCP302LSN20T1G classified as obsolete?

A: The product status reflects onsemi's discontinuation of this part number. The BU4320G-TR, maintained as an active product by Rohm Semiconductor, provides functional continuity for new designs and ongoing support.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the NCP302LSN20T1G and BU4320G-TR are ROHS3 Compliant and REACH Unaffected, with identical Moisture Sensitivity Level 1 (Unlimited) ratings.

Q: What is the inventory status of these parts?

A: The NCP302LSN20T1G has 20,304 pieces in stock as new original inventory. The BU4320G-TR has 18,915 pieces in stock as new original inventory, both available in standard packaging formats.