LM2598T-12 Equivalent & Substitute Parts

Part Overview

The LM2598T-12 is a buck switching regulator IC from the SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 12V output and 1A current capacity. This component operates across a wide input voltage range of 4.5V to 40V and is housed in a TO-220-7 package with formed leads for through-hole mounting.

The LM2598T-12 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring this specific buck regulator topology and output specifications.

Substiute Parts

LM2598T-12

Texas InstrumentsIn Stock: 3139LM2598T-12 Datasheet

Current PartRFQ

LM2598T-12/NOPB

National SemiconductorIn Stock: 1430LM2598T-12/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2598T-12 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 12V fixed
• Output current rating: 1A minimum
• Input voltage range: 4.5V to 40V minimum
• Switching topology: Buck converter
• Package type: TO-220-7 Formed Leads
• Mounting configuration: Through Hole
• Switching frequency: 150kHz
• Operating temperature range: -40°C to 125°C

The LM2598T-12/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2598T-12/NOPB is the direct equivalent substitute for the obsolete LM2598T-12. Both components share identical electrical specifications, package configuration, and functional characteristics. The LM2598T-12/NOPB carries Active product status, ensuring ongoing availability and supply chain support.

Both parts are classified as EAR99 under export control regulations and are unaffected by REACH compliance requirements. The "/NOPB" designation on the substitute indicates lead-free plating, reflecting modern manufacturing standards while maintaining electrical and mechanical compatibility.

Selection between these parts should prioritize the LM2598T-12/NOPB due to its active status and current market availability. The LM2598T-12 should be considered only for legacy system maintenance where original component specifications are mandated.

Frequently Asked Questions (FAQ)

Q: Can the LM2598T-12/NOPB be used as a direct replacement for the LM2598T-12?

A: Yes. Both components are electrically and mechanically identical. They share the same 12V fixed output, 1A current rating, 4.5V to 40V input range, TO-220-7 package, and operating temperature specifications. The primary difference is product status and packaging format.

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" designation specifies lead-free plating on the component leads, reflecting RoHS-compliant manufacturing. This does not affect electrical performance or mechanical compatibility.

Q: Are there any compliance differences between these parts?

A: Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The LM2598T-12 is RoHS non-compliant, while the LM2598T-12/NOPB reflects current manufacturing standards. Both are unaffected by REACH regulations.

Q: Why is the LM2598T-12 classified as obsolete?

A: Obsolete status indicates the component is no longer in active production. The LM2598T-12/NOPB remains in active production and is the recommended choice for new designs and ongoing supply requirements.

Q: Are the TO-220-7 packages physically identical?

A: Yes. Both components use TO-220-7 Formed Leads packages with identical pin configurations and through-hole mounting specifications, ensuring direct PCB compatibility.