R1224N332L-TR-FE Equivalent & Substitute Parts

Part Overview

The R1224N332L-TR-FE is an 18.5V input PWM/VFM step-down DC-DC controller IC manufactured by Nisshinbo Micro Devices Inc. This buck regulator operates as a transistor driver with positive output configuration, designed for surface mount applications in the SOT-23-5 package. The device is currently active in production with 2610 units in stock. Alternative equivalent parts are necessary when primary inventory is unavailable or when design flexibility across compatible variants is required.

Substiute Parts

R1224N332L-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 2636R1224N332L-TR-FE Datasheet

Current PartRFQ

R1224N102M-TR-FE

Nisshinbo Micro Devices Inc.In Stock: 3820R1224N102M-TR-FE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the R1224N332L-TR-FE is determined by strict equivalence across the following critical parameters:

Topology & Function: Both the main part and substitute must operate as buck regulators with step-down functionality and positive output configuration.

Electrical Specifications: Supply voltage range (2.3V ~ 18.5V), switching frequency (180kHz), maximum duty cycle (100%), and control features (Enable) must be identical.

Output Characteristics: Single output, single phase, transistor driver output type, and absence of synchronous rectification and clock synchronization must be maintained.

Package & Mounting: Surface mount configuration in SOT-23-5 package (SC-74A, SOT-753 case) is required for mechanical compatibility.

Environmental & Compliance: Operating temperature range (-40°C ~ 85°C), RoHS compliance, MSL rating (1), ECCN (EAR99), and HTSUS classification must align.

Manufacturer & Series: Parts must originate from Nisshinbo Micro Devices Inc. and share the R1224 base product number.

The R1224N102M-TR-FE meets all substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The R1224N102M-TR-FE is a direct parametric equivalent to the R1224N332L-TR-FE. Both devices share identical electrical specifications, package configuration, and environmental operating parameters. The R1224N102M-TR-FE carries ROHS3 compliance status compared to the RoHS compliance of the primary part, representing an enhanced regulatory position. The substitute part has higher inventory availability (3773 units in stock versus 2610 units), making it suitable for high-volume production requirements. Selection between these parts should be based on inventory availability and compliance requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can the R1224N102M-TR-FE be used as a direct replacement for the R1224N332L-TR-FE?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, switching frequency, duty cycle, supply voltage range, output configuration, and package type. They are mechanically and electrically interchangeable in applications designed for the R1224N332L-TR-FE.

Q: Are there differences in RoHS compliance between these parts?

A: The R1224N332L-TR-FE carries RoHS Compliant status, while the R1224N102M-TR-FE carries ROHS3 Compliant status. ROHS3 represents a more recent compliance standard. Both meet RoHS requirements; the difference reflects the certification generation.

Q: Do both parts operate at the same switching frequency?

A: Yes. Both the R1224N332L-TR-FE and R1224N102M-TR-FE operate at 180kHz switching frequency with identical duty cycle specifications (100% maximum).

Q: Are the package dimensions identical?

A: Yes. Both parts use the SOT-23-5 package (SC-74A, SOT-753 case) with surface mount configuration. They are mechanically compatible and require identical PCB footprints.

Q: What is the supply voltage range for both parts?

A: Both parts accept supply voltage input from 2.3V to 18.5V, making them suitable for applications requiring wide input voltage range buck regulation.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Can these parts be used in applications requiring synchronous rectification?

A: No. Both the R1224N332L-TR-FE and R1224N102M-TR-FE do not include synchronous rectifier functionality. Applications requiring synchronous rectification require alternative controller designs.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the temperature range of -40°C to 85°C, suitable for industrial and commercial applications.