ZR40402R41STOB Equivalent & Substitute Parts

Part Overview

The ZR40402R41STOB is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 4.096V 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 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

ZR40402R41STOB

Diodes IncorporatedIn Stock: 770ZR40402R41STOB 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

Substitution of the ZR40402R41STOB is determined by the following critical parameters that must remain compatible:

• Fixed Output Voltage: 4.096V (exact match required)
• Output Current Capability: 15 mA (minimum requirement)
• Reference Type: Shunt configuration
• Mounting Type: Through Hole
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package Compatibility: TO-92-3 or E-Line equivalent form factors

The substitute parts identified—LM4040C41ILPR and LM4040D41ILPR—both satisfy these core requirements. These Texas Instruments components maintain the same output voltage, current rating, and operating temperature specifications. While tolerance and temperature coefficient specifications differ between candidates, both represent functionally equivalent alternatives for applications where the ZR40402R41STOB is no longer available.

Parameter Comparison

Engineering Selection Recommendations

Both LM4040C41ILPR and LM4040D41ILPR are active products from Texas Instruments and represent viable substitutes for the obsolete ZR40402R41STOB. Selection between these two options depends on application-specific tolerance and temperature stability requirements:

LM4040C41ILPR offers superior tolerance specification at ±0.5% compared to the original ±2%, with matching temperature coefficient of 100ppm/°C. This part is suitable for applications requiring tighter voltage accuracy.

LM4040D41ILPR provides intermediate tolerance at ±1% with a slightly higher temperature coefficient of 150ppm/°C. This part remains compatible with the original specifications while offering improved tolerance over the ZR40402R41STOB.

Both substitute parts are ROHS3 compliant and maintain the same operating temperature range. The TO-92-3 package is mechanically and electrically compatible with the original E-Line-3 configuration for through-hole mounting applications. Current inventory availability is confirmed for both alternatives.

Frequently Asked Questions (FAQ)

Q: Can LM4040C41ILPR and LM4040D41ILPR be used interchangeably with ZR40402R41STOB?

A: Both parts are functionally equivalent for applications requiring a 4.096V shunt reference with 15 mA output current and -40°C to 85°C operating range. Selection between them depends on tolerance and temperature coefficient requirements specific to your application.

Q: What is the difference between the two substitute parts?

A: LM4040C41ILPR provides ±0.5% tolerance with 100ppm/°C temperature coefficient. LM4040D41ILPR provides ±1% tolerance with 150ppm/°C temperature coefficient. The original ZR40402R41STOB specified ±2% tolerance with 100ppm/°C.

Q: Are the packages compatible?

A: The TO-92-3 package used by both Texas Instruments substitutes is mechanically and electrically compatible with the E-Line-3 package of the original part for through-hole mounting applications.

Q: Do the substitute parts meet compliance requirements?

A: Both LM4040C41ILPR and LM4040D41ILPR are ROHS3 compliant and REACH unaffected, matching the compliance status of the original ZR40402R41STOB.

Q: What is the cathode current difference?

A: The original part specifies 60 µA cathode current, while both substitutes specify 88 µA. This difference is within acceptable operating margins for shunt reference applications and does not affect functional compatibility.