ZR40401R41STOB Equivalent & Substitute Parts

Part Overview

The ZR40401R41STOB is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 4.096V output with ±1% tolerance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 85°C and is suitable for applications requiring precision voltage reference functionality in through-hole configurations.

Substiute Parts

ZR40401R41STOB

Diodes IncorporatedIn Stock: 939ZR40401R41STOB Datasheet

Current PartRFQ

LM4040C41ILPR

Texas InstrumentsIn Stock: 2736LM4040C41ILPR Datasheet

MFR RecommendedRFQ

LM4040D41ILPR

Texas InstrumentsIn Stock: 2716LM4040D41ILPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ZR40401R41STOB are qualified based on the following critical parameters:

• Fixed output voltage of 4.096V
• Output current capability of 15 mA
• Through-hole mounting configuration
• Operating temperature range of -40°C to 85°C
• Shunt reference type with fixed output
• ROHS3 compliance and REACH unaffected status

The LM4040C41ILPR and LM4040D41ILPR from Texas Instruments meet these core substitution criteria. Both parts maintain the same output voltage, current rating, and operating temperature specifications. Package compatibility is achieved through TO-92-3 configuration, which is mechanically and electrically compatible with the E-Line-3 package in through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both LM4040C41ILPR and LM4040D41ILPR are active products from Texas Instruments and represent direct functional replacements for the obsolete ZR40401R41STOB. Selection between the two substitute options depends on tolerance requirements:

The LM4040D41ILPR maintains the ±1% tolerance specification of the original part, making it the primary substitute for applications where tolerance matching is required. The LM4040C41ILPR offers improved ±0.5% tolerance, providing enhanced accuracy for precision applications at the cost of tighter specifications.

Both substitutes are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part. Active product status ensures long-term availability and supply chain continuity compared to the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can LM4040C41ILPR and LM4040D41ILPR be used interchangeably with ZR40401R41STOB?

A: Both parts are functionally equivalent for applications requiring a 4.096V fixed shunt reference with 15 mA output current and -40°C to 85°C operating range. The primary difference is tolerance specification: LM4040D41ILPR matches the original ±1% tolerance, while LM4040C41ILPR provides ±0.5% tolerance.

Q: Are there package compatibility concerns when substituting TO-92-3 for E-Line-3?

A: Both packages are three-lead through-hole configurations with compatible pin spacing and electrical characteristics. TO-92-3 is mechanically and electrically suitable for applications originally designed for E-Line-3 packages.

Q: What is the impact of the higher cathode current in the substitute parts?

A: The LM4040C41ILPR and LM4040D41ILPR specify 88 µA cathode current compared to 60 µA in the original part. This difference is within acceptable operating margins for shunt reference applications and does not affect functional compatibility.

Q: How do the noise specifications compare?

A: The substitute parts (LM4040C41ILPR and LM4040D41ILPR) specify 80µVrms noise in the 10Hz to 10kHz band, compared to 90µVrms for the original ZR40401R41STOB. This represents improved noise performance in the substitute options.

Q: Are regulatory certifications maintained with these substitutes?

A: Yes. Both LM4040C41ILPR and LM4040D41ILPR maintain ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original ZR40401R41STOB.