LM237KCSE3 Equivalent & Substitute Parts

Part Overview

The LM237KCSE3 is a linear voltage regulator IC designed for negative adjustable output applications. This through-hole TO-220-3 packaged component delivers 1.5A output current with adjustable negative voltage regulation from -1.2V to -37V. The device is classified as Last Time Buy, indicating end-of-life status and limited availability. Identifying qualified substitute parts ensures design continuity and supply chain reliability for applications requiring negative voltage regulation.

Substiute Parts

LM237KCSE3

Texas InstrumentsIn Stock: 1906LM237KCSE3 Datasheet

Current PartRFQ

LM337KVURG3

Texas InstrumentsIn Stock: 30062LM337KVURG3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LM337KVURG3 qualifies as a direct functional substitute based on the following critical parameters:

• Output Configuration: Both parts deliver negative adjustable voltage regulation
• Output Type: Both provide adjustable output voltage
• Current Rating: Both support 1.5A output current
• Voltage Range: Both regulate from -1.2V to -37V with -40V maximum input
• PSRR Performance: Both achieve 77dB at 120Hz
• Manufacturer: Both are Texas Instruments products
• Compliance: Both are ROHS3 Compliant and REACH Unaffected

The primary difference is packaging: LM237KCSE3 uses through-hole TO-220-3, while LM337KVURG3 uses surface-mount TO-252-3 (DPAK). This substitution requires PCB layout modification but maintains electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The LM337KVURG3 provides electrical equivalence to the LM237KCSE3 for negative adjustable voltage regulation applications. Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements.

Selection between these parts depends on design constraints:

• Through-hole requirement: LM237KCSE3 is the only option
• Surface-mount requirement: LM337KVURG3 is the appropriate choice
• Operating temperature below 0°C: LM237KCSE3 supports -25°C minimum; LM337KVURG3 minimum is 0°C
• Operating temperature above 125°C: LM237KCSE3 supports up to 150°C; LM337KVURG3 maximum is 125°C

The LM337KVURG3 offers higher inventory availability (30,051 pcs vs. 1,839 pcs) and includes short-circuit protection in addition to over-temperature protection.

Frequently Asked Questions (FAQ)

Q: Can LM337KVURG3 directly replace LM237KCSE3 without circuit modification?

A: Electrical substitution is direct. Pin configuration and voltage regulation characteristics are identical. However, the different package form (TO-252-3 surface-mount vs. TO-220-3 through-hole) requires PCB layout redesign.

Q: What are the key differences between these parts?

A: The primary differences are mounting type and package form. LM237KCSE3 is through-hole; LM337KVURG3 is surface-mount. Operating temperature ranges differ: LM237KCSE3 operates from -25°C to 150°C, while LM337KVURG3 operates from 0°C to 125°C. LM337KVURG3 includes short-circuit protection.

Q: Are both parts suitable for the same negative voltage regulation range?

A: Yes. Both parts regulate adjustable negative output from -1.2V to -37V with identical -40V maximum input voltage and 1.5A output current.

Q: Which part should be selected for new designs?

A: LM337KVURG3 is recommended for new designs due to higher inventory availability and surface-mount packaging alignment with modern PCB assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected.

Q: What is the impact of the operating temperature range difference?

A: If your application requires operation below 0°C or above 125°C, verify the specific temperature requirements. LM237KCSE3 supports the wider range (-25°C to 150°C). LM337KVURG3 is limited to 0°C to 125°C.