REF102AU/2K5 Equivalent & Substitute Parts

Part Overview

The REF102AU/2K5 is a series voltage reference IC manufactured by Texas Instruments, designed for precision power management applications requiring fixed 10V output with ±0.1% tolerance. This active product operates across a wide input voltage range of 11.4V to 36V and delivers 10 mA output current with low noise characteristics. The device is housed in an 8-SOIC surface mount package and is RoHS3 compliant with MSL 2 rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter tolerances for this voltage reference category.

Key Parameters

Parameter	REF102AU/2K5
Manufacturer	Texas Instruments
Reference Type	Series
Output Type	Fixed
Voltage - Output	10V
Current - Output	10 mA
Tolerance	±0.1%
Temperature Coefficient	10 ppm/°C
Noise (0.1Hz to 10Hz)	5 µVp-p
Voltage - Input Range	11.4V ~ 36V
Current - Supply	1.4 mA
Operating Temperature	-25°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant
MSL Rating	2 (1 Year)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the REF102AU/2K5 are qualified based on the following electrical and mechanical criteria:

Core Compatibility Parameters:

Reference Type: Series
Output Type: Fixed
Voltage - Output: 10V
Current - Output: 10 mA
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: RoHS3 Compliant

Tolerance Considerations: Parts with ±0.1% tolerance (matching the main part) or tighter tolerance (±0.05%) are acceptable substitutes. Parts with looser tolerance specifications are not qualified.

Electrical Performance Variations: Substitute parts from Analog Devices Inc. (AD587 series) maintain the core 10V fixed output and 10 mA current specifications. Variations in temperature coefficient, noise characteristics, input voltage range, supply current, and operating temperature range are documented in the parameter comparison table below.

Packaging Variants: Substitute parts are available in three packaging configurations: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®. All maintain identical electrical performance and mechanical compatibility.

Parameter Comparison

Parameter	REF102AU/2K5	AD587JRZ	AD587JRZ-REEL	AD587JRZ-REEL7	AD587KRZ	AD587KRZ-REEL7
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Reference Type	Series	Series	Series	Series	Series	Series
Output Type	Fixed	Fixed	Fixed	Fixed	Fixed	Fixed
Voltage - Output	10V	10V	10V	10V	10V	10V
Current - Output	10 mA	10 mA	10 mA	10 mA	10 mA	10 mA
Tolerance	±0.1%	±0.1%	±0.1%	±0.1%	±0.05%	±0.05%
Temperature Coefficient	10 ppm/°C	20 ppm/°C	20 ppm/°C	20 ppm/°C	10 ppm/°C	10 ppm/°C
Noise (0.1Hz to 10Hz)	5 µVp-p	4 µVp-p	4 µVp-p	4 µVp-p	4 µVp-p	4 µVp-p
Voltage - Input Range	11.4V ~ 36V	14.6V ~ 36V	14.6V ~ 36V	14.6V ~ 36V	14.6V ~ 36V	14.6V ~ 36V
Current - Supply	1.4 mA	4 mA	4 mA	4 mA	4 mA	4 mA
Operating Temperature	-25°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
MSL Rating	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain active product status and RoHS3 compliance, ensuring long-term availability and regulatory alignment with the REF102AU/2K5.

AD587JRZ Series (±0.1% Tolerance): The AD587JRZ, AD587JRZ-REEL, and AD587JRZ-REEL7 variants provide equivalent tolerance performance to the main part. These parts differ in packaging configuration only and are functionally identical. Selection between these three variants depends on procurement and assembly requirements: Tube packaging for manual handling, Tape & Reel for standard automated assembly, or Cut Tape & Digi-Reel® for mixed-volume production.

AD587KRZ Series (±0.05% Tolerance): The AD587KRZ and AD587KRZ-REEL7 offer tighter tolerance specifications (±0.05%) compared to the REF102AU/2K5 (±0.1%), providing enhanced output voltage accuracy. These parts are suitable for applications requiring superior precision. Temperature coefficient performance matches the main part at 10 ppm/°C.

Input Voltage Range Consideration: Substitute parts specify a minimum input voltage of 14.6V compared to the REF102AU/2K5 minimum of 11.4V. Applications operating below 14.6V input voltage require the REF102AU/2K5 or equivalent Texas Instruments parts.

Operating Temperature Range Consideration: The REF102AU/2K5 operates across -25°C to 85°C, while all Analog Devices substitutes operate across 0°C to 70°C. Applications requiring operation below 0°C or above 70°C require the REF102AU/2K5.

Moisture Sensitivity: Substitute parts carry MSL 1 (Unlimited) rating compared to the main part's MSL 2 (1 Year), indicating superior moisture resistance for long-term storage and humid environments.

Frequently Asked Questions (FAQ)

Q: Can AD587JRZ variants be used interchangeably with the REF102AU/2K5?

A: AD587JRZ variants are electrically equivalent in tolerance (±0.1%) and output specifications (10V, 10 mA). However, the minimum input voltage requirement differs: AD587JRZ requires 14.6V minimum input, while REF102AU/2K5 operates from 11.4V. Verify your circuit's input voltage range before substitution. Operating temperature ranges also differ: REF102AU/2K5 supports -25°C to 85°C, while AD587JRZ supports 0°C to 70°C.

Q: What is the difference between AD587JRZ, AD587JRZ-REEL, and AD587JRZ-REEL7?

A: These three part numbers are electrically identical. The differences are packaging only: AD587JRZ is supplied in Tube packaging, AD587JRZ-REEL is supplied in Tape & Reel format, and AD587JRZ-REEL7 is supplied in Cut Tape & Digi-Reel® format. Selection depends on your assembly process and volume requirements.

Q: Should I use AD587KRZ instead of AD587JRZ?

A: AD587KRZ offers tighter tolerance (±0.05% versus ±0.1%) and identical temperature coefficient (10 ppm/°C). Choose AD587KRZ if your application requires higher output voltage accuracy. Both parts maintain the same 10V output, 10 mA current, and 8-SOIC package compatibility.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: All parts listed are RoHS3 compliant and carry Active product status. Substitute parts from Analog Devices Inc. feature superior moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1 Year), providing better protection in humid storage and operational environments.

Q: What are the key parameters that determine substitution compatibility?

A: Core compatibility is determined by: fixed 10V output, 10 mA output current, ±0.1% or tighter tolerance, 8-SOIC surface mount package, and RoHS3 compliance. Secondary parameters including temperature coefficient, noise, input voltage range, supply current, and operating temperature range must be evaluated against your specific application requirements.

Q: Can I use these parts in applications requiring extended temperature operation?

A: The REF102AU/2K5 supports -25°C to 85°C operation. All Analog Devices substitutes (AD587 series) support only 0°C to 70°C. For applications requiring operation outside the 0°C to 70°C range, the REF102AU/2K5 is required.

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