ZRC500F01TC Equivalent & Substitute Parts

Part Overview

The ZRC500F01TC is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 5V output with ±1% tolerance in a compact SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part delivers 5 mA output current with a temperature coefficient of 90 ppm/°C and operates across the industrial temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Fixed
Voltage - Output (Min/Fixed)	5V
Current - Output	5 mA
Tolerance	±1%
Temperature Coefficient	90 ppm/°C
Noise - 10Hz to 10kHz	105 µVrms
Current - Cathode	25 µA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the ZRC500F01TC is determined by the following critical parameters: fixed 5V output voltage, SOT-23-3 package compatibility, ±1% tolerance, and surface mount capability. All substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Parametric Equivalent (Direct Replacement): ZRC500F01TA maintains identical electrical specifications to the main part, including 5 mA output current and 90 ppm/°C temperature coefficient. This part differs only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Manufacturer Recommended Alternatives: LM4040DIM3-5.0+T, LM4040DIM3-5.0/NOPB, LM4040DIM3X-5.0/NOPB, and LM4040DYM3-5.0-TR are functionally compatible alternatives from different manufacturers. These parts share the same 5V output, ±1% tolerance, SOT-23-3 package, and operating temperature range. However, they feature enhanced specifications: 15 mA output current (versus 5 mA), 150 ppm/°C temperature coefficient (versus 90 ppm/°C), and 80 µVrms noise (versus 105 µVrms).

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Output	Current Output	Tolerance	Temp Coefficient	Noise (10Hz-10kHz)	Cathode Current	Package	RoHS Status
ZRC500F01TC	Diodes Incorporated	Obsolete	5V	5 mA	±1%	90 ppm/°C	105 µVrms	25 µA	SOT-23-3	ROHS3 Compliant
ZRC500F01TA	Diodes Incorporated	Active	5V	5 mA	±1%	90 ppm/°C	105 µVrms	25 µA	SOT-23-3	ROHS3 Compliant
LM4040DIM3-5.0+T	Analog Devices Inc./Maxim Integrated	Active	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	SOT-23-3	ROHS3 Compliant
LM4040DIM3-5.0/NOPB	Texas Instruments	Active	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	SOT-23-3	ROHS3 Compliant
LM4040DIM3X-5.0/NOPB	National Semiconductor	Active	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	SOT-23-3	Not Specified
LM4040DYM3-5.0-TR	Microchip Technology	Active	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	SOT-23-3	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement: ZRC500F01TA is the optimal choice when maintaining identical electrical performance is required. This part is manufactured by the same supplier (Diodes Incorporated), carries Active product status, and is available in higher inventory quantities (3,398 pcs). It maintains the original 5 mA output current and 90 ppm/°C temperature coefficient while offering ROHS3 compliance and unlimited moisture sensitivity rating.

For Enhanced Performance Applications: The LM4040 series (LM4040DIM3-5.0+T, LM4040DIM3-5.0/NOPB, LM4040DIM3X-5.0/NOPB, and LM4040DYM3-5.0-TR) provides superior specifications with 15 mA output current capacity, improved noise performance (80 µVrms), and Active product status from established manufacturers. These parts are suitable for applications requiring higher output current or lower noise characteristics while maintaining the same 5V output and ±1% tolerance.

All substitute parts maintain SOT-23-3 package compatibility, surface mount capability, and -40°C to 85°C operating temperature range. Selection should be based on application current requirements, noise specifications, and manufacturer availability.

Frequently Asked Questions (FAQ)

Q: Can ZRC500F01TA be used as a direct replacement for ZRC500F01TC?

A: Yes. ZRC500F01TA is a parametric equivalent with identical electrical specifications: 5V output, 5 mA current, ±1% tolerance, 90 ppm/°C temperature coefficient, and SOT-23-3 package. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel).

Q: What are the key differences between the ZRC500F01TC and LM4040 series substitutes?

A: The LM4040 series provides higher output current (15 mA vs. 5 mA), lower noise (80 µVrms vs. 105 µVrms), and higher temperature coefficient (150 ppm/°C vs. 90 ppm/°C). All maintain 5V output, ±1% tolerance, and SOT-23-3 package compatibility. These differences make LM4040 parts suitable for applications requiring higher current capacity or lower noise performance.

Q: Are all substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts use the SOT-23-3 package (TO-236-3, SC-59), ensuring mechanical and electrical pin compatibility with the original ZRC500F01TC footprint.

Q: Which substitute part offers the best availability?

A: LM4040DYM3-5.0-TR from Microchip Technology has the highest inventory (12,279 pcs), followed by LM4040DIM3-5.0+T from Analog Devices (15,200 pcs). ZRC500F01TA from Diodes Incorporated offers 3,398 pcs.

Q: Do all substitute parts meet RoHS compliance requirements?

A: ZRC500F01TA, LM4040DIM3-5.0+T, LM4040DIM3-5.0/NOPB, and LM4040DYM3-5.0-TR are ROHS3 compliant. LM4040DIM3X-5.0/NOPB does not specify RoHS status in available documentation.

Q: What is the moisture sensitivity level for these parts?

A: ZRC500F01TA, LM4040DIM3-5.0+T, LM4040DIM3-5.0/NOPB, and LM4040DYM3-5.0-TR all carry MSL 1 (Unlimited). LM4040DIM3X-5.0/NOPB does not specify MSL in available documentation.

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