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ZR40402F41TC Equivalent & Substitute Parts
Part Overview
The ZR40402F41TC is a shunt voltage reference IC manufactured by Diodes Incorporated, providing a fixed 4.096V output with ±2% tolerance in a SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part delivers 15 mA output current and operates across the industrial temperature range of -40°C to 85°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Reference Type | Shunt |
| Output Voltage (Fixed) | 4.096V |
| Output Current | 15 mA |
| Tolerance | ±2% |
| Temperature Coefficient | 100 ppm/°C |
| Noise (10Hz to 10kHz) | 90 µVrms |
| Cathode Current | 60 µA |
| Operating Temperature | -40°C to 85°C |
| Package | SOT-23-3 (TO-236-3, SC-59) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the ZR40402F41TC is determined by strict electrical and mechanical compatibility across the following parameters:
Critical Matching Parameters:
- Output voltage: 4.096V fixed
- Package type: SOT-23-3 surface mount
- Output current capability: 15 mA minimum
- Cathode current: 60 µA nominal
- Mounting type: Surface mount
Acceptable Variation Parameters:
- Tolerance: May be equal or tighter (±2% or better)
- Temperature coefficient: May be equal or lower
- Noise specifications: May be equal or lower
- Operating temperature range: May be equal or extended
- Product status: Active or discontinued parts with available inventory
Substitute parts are grouped by manufacturer and tolerance grade. All listed substitutes maintain the 4.096V output voltage, SOT-23-3 package, and 15 mA output current specification. Tolerance improvements and extended temperature ranges represent functional enhancements suitable for direct replacement.
Parameter Comparison
| Part Number | Manufacturer | Output Voltage | Tolerance | Temp Coeff (ppm/°C) | Noise 10Hz-10kHz (µVrms) | Cathode Current (µA) | Operating Temp (°C) | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|
| ZR40402F41TC | Diodes Inc. | 4.096V | ±2% | 100 | 90 | 60 | -40 to 85 | Obsolete | 688 Pcs |
| ADR5044ARTZ-REEL7 | Analog Devices | 4.096V | ±0.2% | 100 | 240 | 60 | -40 to 125 | Active | 23107 Pcs |
| ADR5044BRTZ-R2 | Analog Devices | 4.096V | ±0.1% | 75 | 240 | 60 | -40 to 125 | Discontinued | 1006 Pcs |
| ADR5044BRTZ-REEL7 | Analog Devices | 4.096V | ±0.1% | 75 | 240 | 60 | -40 to 125 | Active | 22995 Pcs |
| ADR5044WARTZ-R7 | Analog Devices | 4.096V | ±0.2% | 100 | 240 | 60 | -40 to 125 | Active | 1430 Pcs |
| ADR5044WBRTZ-R7 | Analog Devices | 4.096V | ±0.1% | 75 | 240 | 60 | -40 to 125 | Active | 27042 Pcs |
| LM4040A41IDBZR | Texas Instruments | 4.096V | ±0.1% | 100 | 80 | 88 | -40 to 85 | Active | 7200 Pcs |
| LM4040A41IDBZT | Texas Instruments | 4.096V | ±0.1% | 100 | 80 | 88 | -40 to 85 | Active | 2350 Pcs |
| LM4040AEM3-4.1+T | Analog Devices/Maxim | 4.096V | ±0.1% | 100 | 64 | 73 | -40 to 125 | Active | 954 Pcs |
| LM4040AIM3-4.1+T | Analog Devices/Maxim | 4.096V | ±0.1% | 100 | 64 | 73 | -40 to 85 | Active | 15400 Pcs |
| LM4040AIM3-4.1/NOPB | Texas Instruments | 4.096V | ±0.1% | 100 | 80 | 73 | -40 to 85 | Active | 44900 Pcs |
Engineering Selection Recommendations
All listed substitute parts maintain electrical and mechanical compatibility with the ZR40402F41TC through identical output voltage, package type, and output current specifications. Selection should prioritize active product status for long-term supply assurance.
Analog Devices ADR5044 Series (ADR5044BRTZ-REEL7, ADR5044WBRTZ-R7): These parts offer ±0.1% tolerance with extended operating temperature to 125°C and are actively manufactured. The ADR5044BRTZ-REEL7 provides the highest inventory availability (22995 Pcs) with standard reel packaging. The automotive-grade ADR5044WBRTZ-R7 variant (27042 Pcs) is suitable for applications requiring automotive qualification.
Texas Instruments LM4040 Series (LM4040AIM3-4.1/NOPB, LM4040A41IDBZR): These parts deliver ±0.1% tolerance with active production status. The LM4040AIM3-4.1/NOPB offers the largest inventory (44900 Pcs) and maintains the original -40°C to 85°C temperature range. Both variants are ROHS3 compliant with MSL 1 rating.
Analog Devices/Maxim LM4040 Series (LM4040AIM3-4.1+T, LM4040AEM3-4.1+T): These parts provide ±0.1% tolerance with lower noise specifications (64 µVrms) and extended temperature range to 125°C. The LM4040AIM3-4.1+T maintains the original temperature range with 15400 Pcs inventory.
All substitute parts carry ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the original part's environmental certifications.
Frequently Asked Questions (FAQ)
Q: Can ADR5044 series parts directly replace the ZR40402F41TC?
A: Yes. The ADR5044 series maintains the 4.096V output voltage, 15 mA output current, SOT-23-3 package, and 60 µA cathode current. The ±0.1% tolerance represents an improvement over the original ±2% specification. Extended operating temperature to 125°C provides additional design margin.
Q: What is the difference between ADR5044BRTZ-REEL7 and ADR5044WBRTZ-R7?
A: Both parts share identical electrical specifications (±0.1% tolerance, 4.096V output, 15 mA current). The ADR5044WBRTZ-R7 carries automotive-grade qualification and is supplied on tape and reel. The ADR5044BRTZ-REEL7 is standard industrial grade on cut tape and digi-reel. Selection depends on application requirements and packaging preference.
Q: Are LM4040 parts suitable for the original application?
A: Yes. LM4040A41IDBZR and LM4040AIM3-4.1/NOPB maintain ±0.1% tolerance, 4.096V output, and SOT-23-3 package compatibility. The LM4040 series operates within the original -40°C to 85°C range. Cathode current is slightly higher (73-88 µA versus 60 µA), which is acceptable for shunt reference applications.
Q: What packaging options are available?
A: Substitute parts are supplied in cut tape (CT) & digi-reel, tape and reel (TR), or standard packaging. All maintain SOT-23-3 surface mount configuration. Packaging selection affects handling and assembly processes but does not impact electrical performance.
Q: Which substitute offers the best long-term availability?
A: LM4040AIM3-4.1/NOPB (Texas Instruments) with 44900 Pcs inventory and active production status provides the strongest supply position. ADR5044BRTZ-REEL7 (Analog Devices) with 22995 Pcs also offers robust availability with active status.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the original ZR40402F41TC environmental certifications.
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