ZXRE4041DRSTZ Equivalent & Substitute Parts

Part Overview

The ZXRE4041DRSTZ is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 1.225V output with ±1% tolerance. This component is classified as obsolete, with 1,179 units currently in stock. The part operates across a temperature range of -40°C to 125°C and delivers 12 mA output current with a cathode current of 30 µA. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

ZXRE4041DRSTZ

Diodes IncorporatedIn Stock: 1234ZXRE4041DRSTZ Datasheet

Current PartRFQ

ZXRE4041DFTA

Diodes IncorporatedIn Stock: 28229ZXRE4041DFTA Datasheet

MFR RecommendedRFQ

LM4041C12ILPR

Texas InstrumentsIn Stock: 3582LM4041C12ILPR Datasheet

MFR RecommendedRFQ

LM4041D12ILPR

Texas InstrumentsIn Stock: 3173LM4041D12ILPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZXRE4041DRSTZ is determined by the following core electrical and mechanical parameters:

Critical Matching Parameters:

• Reference Type: Shunt
• Output Voltage: 1.225V (fixed)
• Output Current: 12 mA
• Tolerance: ±1% (or better)
• Temperature Coefficient: 100ppm/°C or lower
• Operating Temperature Range: Must support -40°C ~ 125°C minimum
• RoHS3 Compliance: Required

Packaging Consideration: The ZXRE4041DRSTZ uses E-Line (TO-92 compatible) through-hole packaging. Substitutes may employ different package types (SOT-23 surface mount or alternative through-hole variants) provided the electrical specifications remain compatible.

The substitute parts identified below meet or exceed the electrical specifications of the main part while maintaining functional equivalence for shunt voltage reference applications.

Parameter Comparison

Engineering Selection Recommendations

ZXRE4041DFTA (Diodes Incorporated): This part is the manufacturer-recommended direct substitute from Diodes Incorporated. It maintains identical electrical specifications (1.225V, ±1%, 12 mA, 100ppm/°C) and the same operating temperature range (-40°C ~ 125°C). The primary difference is packaging: ZXRE4041DFTA uses SOT-23-3 surface-mount technology versus the through-hole E-Line package of the main part. This substitute is active and ROHS3 compliant, making it suitable for new designs or PCB redesigns accommodating surface-mount assembly.

LM4041C12ILPR (Texas Instruments): This Texas Instruments part offers superior electrical performance with ±0.5% tolerance (tighter than the ±1% specification) and lower noise (20µVrms versus 60µVrms). It maintains the 1.225V output and 12 mA current rating. However, the operating temperature range is limited to -40°C ~ 85°C, which does not fully cover the original part's -40°C ~ 125°C range. This part is suitable for applications where the reduced temperature range is acceptable and improved accuracy is beneficial. Through-hole TO-92-3 packaging provides direct mechanical compatibility with the original part.

LM4041D12ILPR (Texas Instruments): This part matches the ±1% tolerance specification of the original ZXRE4041DRSTZ and provides the same 1.225V output and 12 mA current. It offers lower noise (20µVrms) and maintains through-hole TO-92-3 packaging for direct mechanical substitution. The temperature coefficient is 150ppm/°C (versus 100ppm/°C), and the operating temperature range is -40°C ~ 85°C. This part is active and ROHS3 compliant, making it a viable alternative where the reduced temperature range is acceptable.

All substitute parts are active products with established supply chains, addressing the obsolescence concern of the original ZXRE4041DRSTZ.

Frequently Asked Questions (FAQ)

Q: Can ZXRE4041DFTA be used as a direct replacement for ZXRE4041DRSTZ? A: ZXRE4041DFTA is electrically equivalent with identical voltage output (1.225V), tolerance (±1%), current rating (12 mA), and temperature coefficient (100ppm/°C). The primary difference is packaging: ZXRE4041DFTA uses surface-mount SOT-23-3 technology while ZXRE4041DRSTZ uses through-hole E-Line packaging. Direct PCB substitution requires design modification to accommodate surface-mount assembly.

Q: What is the key difference between LM4041C12ILPR and LM4041D12ILPR? A: Both parts use through-hole TO-92-3 packaging and provide 1.225V output at 12 mA. LM4041C12ILPR offers ±0.5% tolerance with 100ppm/°C temperature coefficient, while LM4041D12ILPR provides ±1% tolerance with 150ppm/°C temperature coefficient. LM4041C12ILPR delivers superior accuracy; LM4041D12ILPR matches the original part's tolerance specification.

Q: Are the Texas Instruments parts suitable for applications requiring -40°C ~ 125°C operation? A: No. Both LM4041C12ILPR and LM4041D12ILPR are rated for -40°C ~ 85°C operation, which does not cover the full -40°C ~ 125°C range of the original ZXRE4041DRSTZ. These parts are suitable only for applications where operation above 85°C is not required.

Q: What are the noise characteristics of each substitute? A: ZXRE4041DRSTZ and ZXRE4041DFTA both specify 60µVrms noise (10Hz to 10kHz). LM4041C12ILPR and LM4041D12ILPR both specify 20µVrms noise, providing superior noise performance for precision applications.

Q: Are all substitute parts RoHS3 compliant? A: Yes. ZXRE4041DFTA, LM4041C12ILPR, and LM4041D12ILPR are all ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original part.

Q: Which substitute is recommended for new designs? A: For new designs with surface-mount assembly capability, ZXRE4041DFTA is the manufacturer-recommended choice, providing identical electrical specifications and active product status. For through-hole designs, LM4041D12ILPR maintains the ±1% tolerance specification with active availability. LM4041C12ILPR is recommended where superior accuracy (±0.5%) is required and the reduced temperature range is acceptable.