LM237KC Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM237KC is a linear voltage regulator IC manufactured by Texas Instruments, designed for negative adjustable output applications. This device delivers 1.5A output current in a TO-220-3 package configuration and is classified as obsolete. The LM237KC requires identification of equivalent substitute parts due to its obsolete status and limited availability for new designs or production continuity planning.

Substiute Parts

LM237KC

Texas InstrumentsIn Stock: 1192LM237KC Datasheet

Current PartRFQ

LM237KCSE3

Texas InstrumentsIn Stock: 1906LM237KCSE3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM237KC is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Output configuration: Negative polarity
• Output type: Adjustable voltage regulation
• Current capacity: 1.5A minimum
• Input voltage range: -40V maximum
• Output voltage range: -1.2V to -37V
• Protection features: Over current and over temperature protection

Physical & Environmental Specifications:

• Package: TO-220-3 through-hole mounting
• Operating temperature range: -25°C to 150°C
• RoHS compliance: ROHS3 Compliant

The LM237KCSE3 meets all specified electrical and mechanical parameters and qualifies as a direct substitute based on identical output configuration, current rating, voltage specifications, protection features, and package type.

Parameter Comparison

Engineering Selection Recommendations

The LM237KCSE3 is the direct substitute for the LM237KC based on complete electrical and mechanical parameter equivalence. Both devices are manufactured by Texas Instruments and share identical specifications across all critical performance parameters including negative adjustable output configuration, 1.5A current capacity, voltage range, protection features, and TO-220-3 package type.

The LM237KC is classified as obsolete, while the LM237KCSE3 carries a Last Time Buy status, indicating limited future availability. Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for new applications and production continuity.

For applications currently using the LM237KC, direct substitution with LM237KCSE3 requires no circuit modifications or design changes due to identical pinout, electrical characteristics, and thermal performance specifications.

Frequently Asked Questions (FAQ)

Q: Can the LM237KCSE3 replace the LM237KC in existing designs?

A: Yes. The LM237KCSE3 is electrically and mechanically equivalent to the LM237KC. Both devices feature identical output configuration (negative adjustable), current rating (1.5A), voltage specifications (-1.2V to -37V), protection features, and TO-220-3 package type. No circuit modifications are required.

Q: What is the difference between LM237KC and LM237KCSE3?

A: The primary difference is part status. The LM237KC is obsolete, while the LM237KCSE3 is Last Time Buy. All electrical specifications, performance parameters, and package configurations are identical.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Compliance status is equivalent for regulatory purposes.

Q: What does "Last Time Buy" status mean for the LM237KCSE3?

A: Last Time Buy indicates that the manufacturer will continue production for a limited period before discontinuation. This status provides a defined window for procurement before the part becomes unavailable.

Q: Is the TO-220-3 package the same for both parts?

A: Yes. Both the LM237KC and LM237KCSE3 use the TO-220-3 through-hole package with identical pinout and thermal characteristics.

Q: Can these parts be used in new designs?

A: The LM237KCSE3 is suitable for new designs within its Last Time Buy window. The LM237KC, being obsolete, is not recommended for new designs. Long-term production planning should account for the Last Time Buy status of the LM237KCSE3.