LM337KTPRG3 Equivalent & Substitute Parts

Part Overview

The LM337KTPRG3 is a linear voltage regulator IC designed for negative adjustable output applications. It delivers 1.5A output current in a TO-252-3 surface mount package. This part is classified as Obsolete, making identification of compatible substitutes essential for ongoing design support and procurement planning. The LM337KTPRG3 maintains the same functional specifications as its substitute counterparts while differing in product status and compliance certifications.

Substiute Parts

LM337KTPRG3

Texas InstrumentsIn Stock: 1112LM337KTPRG3 Datasheet

Current PartRFQ

LM337KVURG3

Texas InstrumentsIn Stock: 30062LM337KVURG3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LM337KVURG3 qualifies as a parametric equivalent to the LM337KTPRG3 based on the following criteria:

Electrical Specifications Match:

• Identical output configuration (Negative)
• Identical output type (Adjustable)
• Identical voltage input maximum (-40V)
• Identical voltage output range (-1.2V to -37V)
• Identical output current (1.5A)
• Identical PSRR performance (77dB at 120Hz)
• Identical protection features (Over Temperature, Short Circuit)
• Identical operating temperature range (0°C ~ 125°C)

Package Compatibility:

• Identical package designation (TO-252-3, DPAK with 2 Leads + Tab, SC-63)
• Identical supplier device package (TO-252-3)
• Surface mount mounting type

Manufacturer Consistency:

• Both parts manufactured by Texas Instruments
• Both parts share the same base product number (LM337)

Substitution is valid when electrical performance, thermal characteristics, and physical package compatibility are maintained across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM337KVURG3 is the appropriate substitute for the obsolete LM337KTPRG3 in new designs and ongoing production. The substitute part maintains full electrical and mechanical compatibility while offering improved compliance status.

Product Status Consideration: The LM337KTPRG3 is classified as Obsolete, whereas the LM337KVURG3 carries Last Time Buy status, indicating extended availability for transition planning.

Compliance Advantage: The LM337KVURG3 achieves ROHS3 compliance, compared to the non-compliant status of the LM337KTPRG3. This compliance improvement supports regulatory requirements in manufacturing and distribution.

Moisture Sensitivity: The LM337KVURG3 specifies MSL 3 (168 Hours), requiring controlled storage conditions during handling. The LM337KTPRG3 specifies MSL 1 (Unlimited), indicating less stringent moisture control. Storage and assembly procedures must account for this difference.

Functional Equivalence: All electrical parameters, output specifications, protection features, and thermal characteristics are identical between the two parts, ensuring direct functional substitution in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the LM337KVURG3 directly replace the LM337KTPRG3 in existing designs?

A: Yes. The LM337KVURG3 maintains identical electrical specifications, output characteristics, and package configuration. No circuit modifications are required for functional substitution.

Q: What is the significance of the product status difference?

A: The LM337KTPRG3 is Obsolete and no longer manufactured. The LM337KVURG3 is Last Time Buy, indicating limited future availability. Designs should transition to the LM337KVURG3 for continued supply assurance.

Q: Are there packaging differences between these parts?

A: Both parts use the TO-252-3 package (DPAK with 2 Leads + Tab, SC-63). Physical dimensions, pin configuration, and PCB footprint are identical.

Q: What does the MSL 3 rating on the LM337KVURG3 mean for handling?

A: MSL 3 specifies a 168-hour moisture absorption limit. The component must be stored in controlled humidity conditions and used within the specified timeframe after opening. The LM337KTPRG3 with MSL 1 has no such restriction.

Q: Are both parts RoHS compliant?

A: The LM337KTPRG3 is RoHS non-compliant. The LM337KVURG3 is ROHS3 compliant. For applications requiring RoHS compliance, the LM337KVURG3 is the required choice.

Q: Do the electrical performance characteristics match exactly?

A: Yes. Input voltage range, output voltage range, output current, PSRR, protection features, and operating temperature range are identical across both parts.