LM4040D10ILPR Equivalent & Substitute Parts

Part Overview

The LM4040D10ILPR is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage reference applications requiring a fixed 10V output. This component operates as a fixed output type shunt reference with ±1% tolerance and is housed in a TO-92-3 package with through-hole mounting. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

LM4040D10ILPR

Texas InstrumentsIn Stock: 936LM4040D10ILPR Datasheet

Current PartRFQ

LM4040C10ILPR

Texas InstrumentsIn Stock: 1963LM4040C10ILPR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM4040D10ILPR is determined by the following critical parameters that must remain compatible:

• Reference Type: Must be Shunt
• Output Voltage: Must be 10V Fixed
• Output Current: Must be 15 mA
• Package Type: Must be TO-92-3
• Mounting Type: Must be Through Hole
• Operating Temperature Range: Must support -40°C to 85°C

The LM4040C10ILPR qualifies as a direct substitute based on these core parameters. While the substitute exhibits improved electrical characteristics (±0.5% tolerance versus ±1%, and 100 ppm/°C temperature coefficient versus 150 ppm/°C), it maintains functional compatibility with the original design. The substitute is available in Cut Tape packaging versus the original Tape & Reel format, which affects procurement and handling but not electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The LM4040C10ILPR is a direct functional substitute for the LM4040D10ILPR. Both components are manufactured by Texas Instruments and maintain identical electrical specifications for the critical parameters governing shunt voltage reference operation: 10V fixed output, 15 mA output current, TO-92-3 package, and -40°C to 85°C operating range.

The LM4040C10ILPR offers improved performance characteristics with tighter tolerance (±0.5% versus ±1%) and lower temperature coefficient (100 ppm/°C versus 150 ppm/°C), making it suitable for applications requiring enhanced precision. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

The primary distinction is product status: the original part is obsolete while the substitute is designated Last Time Buy, indicating limited future availability. For new designs or production continuity, the LM4040C10ILPR is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the LM4040C10ILPR be used as a direct replacement for the LM4040D10ILPR in existing designs?

A: Yes. Both components share identical output voltage (10V), output current (15 mA), package type (TO-92-3), and operating temperature range (-40°C to 85°C). The substitute requires no circuit modifications and is pin-compatible.

Q: What are the differences between these two parts?

A: The LM4040C10ILPR provides tighter tolerance (±0.5% versus ±1%) and lower temperature coefficient (100 ppm/°C versus 150 ppm/°C). Cathode current is also lower (125 µA versus 135 µA). These represent performance improvements rather than incompatibilities.

Q: Does packaging format affect compatibility?

A: The original part is supplied in Tape & Reel format while the substitute is available in Cut Tape format. Both contain identical components in TO-92-3 packages. Packaging format affects procurement and handling procedures but not electrical performance or circuit compatibility.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the LM4040D10ILPR and LM4040C10ILPR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the original part listed as obsolete?

A: The LM4040D10ILPR is classified as obsolete by Texas Instruments, indicating it is no longer in active production. The LM4040C10ILPR, designated Last Time Buy, represents the current available alternative from the same manufacturer for this voltage reference specification.