ZXRE4041ERSTOA Equivalent & Substitute Parts

Part Overview

The ZXRE4041ERSTOA is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 1.225V output with ±2% tolerance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across an industrial temperature range of -40°C to 125°C and is packaged in an E-Line (TO-92 compatible) configuration with through-hole mounting.

Substiute Parts

ZXRE4041ERSTOA

Diodes IncorporatedIn Stock: 722ZXRE4041ERSTOA Datasheet

Current PartRFQ

LM4041C12ILPR

Texas InstrumentsIn Stock: 3582LM4041C12ILPR Datasheet

MFR RecommendedRFQ

LM4041D12ILPR

Texas InstrumentsIn Stock: 3173LM4041D12ILPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ZXRE4041ERSTOA is determined by strict equivalence in the following critical parameters:

• Fixed output voltage of 1.225V
• Output current capability of 12 mA
• Through-hole mounting in TO-92-compatible packaging
• Shunt reference topology
• Operating temperature range compatibility
• RoHS3 compliance and regulatory alignment

The identified substitute parts (LM4041C12ILPR and LM4041D12ILPR) from Texas Instruments maintain identical output voltage and current specifications. Both substitutes are active products with improved tolerance specifications (±0.5% and ±1% respectively, compared to ±2% of the original part) and lower noise performance. Package compatibility is maintained through TO-92-3 (TO-226AA) formed leads configuration, which is mechanically and electrically compatible with the original E-Line packaging for through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both LM4041C12ILPR and LM4041D12ILPR are active products from Texas Instruments and represent direct functional equivalents to the obsolete ZXRE4041ERSTOA. Selection between the two substitutes depends on tolerance and temperature coefficient requirements:

LM4041C12ILPR provides superior tolerance specification at ±0.5% with a 100ppm/°C temperature coefficient, matching the original part's thermal performance while delivering tighter output voltage accuracy.

LM4041D12ILPR offers ±1% tolerance with a 150ppm/°C temperature coefficient, representing a middle ground between the original specification and the tighter tolerance option.

Both substitutes demonstrate improved noise performance (20µVrms versus 60µVrms) and are fully RoHS3 compliant. The operating temperature range of -40°C to 85°C covers standard industrial applications; designs requiring operation above 85°C must retain the original ZXRE4041ERSTOA specification or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can LM4041C12ILPR and LM4041D12ILPR be used interchangeably with ZXRE4041ERSTOA?

A: Yes, both parts are functionally equivalent for applications requiring a 1.225V, 12 mA shunt reference. The primary differences are tolerance, noise, and temperature coefficient specifications. Selection should be based on circuit accuracy requirements.

Q: What is the package compatibility between E-Line-3 and TO-92-3?

A: Both packages are through-hole, three-lead configurations with compatible pin spacing and mechanical form factors. TO-92-3 (TO-226AA) formed leads are directly compatible with E-Line-3 footprints in PCB designs.

Q: Why do the substitute parts have higher cathode current (80 µA vs. 30 µA)?

A: Cathode current specification reflects the quiescent current draw of the reference circuit. The higher value in the substitutes does not affect functional compatibility but should be considered in power budget calculations for battery-powered or low-power applications.

Q: Are there temperature range limitations when substituting?

A: The substitute parts operate to 85°C maximum, compared to 125°C for the original part. Applications requiring operation above 85°C cannot use these substitutes without design modification or alternative component selection.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes, both LM4041C12ILPR and LM4041D12ILPR are ROHS3 compliant, matching the regulatory status of the original ZXRE4041ERSTOA.