REF02AP Equivalent & Substitute Parts

Part Overview

The REF02AP is a Series Voltage Reference IC manufactured by Texas Instruments, designed to provide a fixed 5V output with ±0.3% tolerance. This through-hole 8-DIP package component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The REF02AP operates across an input voltage range of 8V to 40V with a maximum output current of 21 mA and is suitable for applications requiring precision voltage references in industrial and commercial temperature ranges (-40°C to 85°C).

Key Parameters

Parameter	Value
Manufacturer Part Number	REF02AP
Manufacturer	Texas Instruments
Product Status	Obsolete
Output Voltage	5V Fixed
Output Current	21 mA
Tolerance	±0.3%
Temperature Coefficient	15 ppm/°C
Input Voltage Range	8V ~ 40V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package	8-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the REF02AP is determined by the following critical parameters:

Primary Substitution Criteria:

Output voltage: 5V fixed
Mounting type: Through hole (8-DIP package)
Tolerance specification: ±0.3% or tighter
Operating temperature range: Must support -40°C to 85°C minimum
Input voltage compatibility: 8V to 40V range or broader

Grouping Logic:

Group 1 - Direct Through-Hole Substitutes (Same Package, ±0.3% Tolerance): Parts that maintain the 8-DIP through-hole package with ±0.3% tolerance specification are considered direct substitutes. These include REF02EN8#PBF (Analog Devices) and REF02HN8#PBF (Analog Devices, ±0.5% tolerance). REF02CPZ and REF02HPZ (Analog Devices) also provide through-hole compatibility with relaxed tolerance specifications (±1% and ±0.5% respectively).

Group 2 - Surface Mount Alternative (REF02AU): REF02AU represents an active alternative from Texas Instruments in 8-SOIC surface mount package. While package type differs, electrical specifications match the REF02AP exactly (5V, ±0.3%, 21 mA output current). This option is suitable for designs transitioning to surface mount technology.

Group 3 - Relaxed Tolerance Through-Hole Options: REF02DN8#PBF (Linear Technology) and REF02CN8#PBF (Analog Devices) provide through-hole 8-DIP packages with relaxed tolerance specifications (±2% and ±1% respectively). These are applicable only when design specifications permit tolerance degradation.

Parameter Comparison

Parameter	REF02AP	REF02AU	REF02EN8#PBF	REF02HN8#PBF	REF02CPZ	REF02HPZ	REF02CN8#PBF	REF02DN8#PBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Linear Technology
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Output Voltage	5V	5V	5V	5V	5V	5V	5V	5V
Output Current	21 mA	21 mA	20 mA	20 mA	10 mA	10 mA	20 mA	20 mA
Tolerance	±0.3%	±0.3%	±0.3%	±0.5%	±1%	±0.5%	±1%	±2%
Temperature Coefficient	15 ppm/°C	15 ppm/°C	8.5 ppm/°C	25 ppm/°C	65 ppm/°C	25 ppm/°C	65 ppm/°C	250 ppm/°C
Input Voltage Range	8V ~ 40V	8V ~ 40V	7V ~ 40V	7V ~ 40V	8V ~ 36V	8V ~ 36V	8V ~ 33V	8V ~ 30V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package	8-DIP	8-SOIC	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Specified

Engineering Selection Recommendations

For Direct Replacement (Through-Hole, -40°C to 85°C Operation):

REF02EN8#PBF from Analog Devices is the primary recommended substitute. It maintains the 8-DIP through-hole package, delivers ±0.3% tolerance matching the REF02AP specification, and supports the full -40°C to 85°C operating temperature range. This part is currently in active production status with ROHS3 compliance. The only deviation is reduced output current (20 mA versus 21 mA), which is acceptable for most applications within the REF02 series design envelope.

REF02HPZ provides an alternative through-hole option with ±0.5% tolerance and full temperature range support (-40°C to 85°C). This part is suitable when tolerance relaxation to ±0.5% is acceptable within design specifications.

For Surface Mount Transition:

REF02AU from Texas Instruments offers identical electrical specifications to the REF02AP (5V, ±0.3%, 21 mA, -40°C to 85°C) in an 8-SOIC surface mount package. This option is appropriate for new designs or production transitions to surface mount assembly. The part maintains active production status and ROHS3 compliance.

For Relaxed Tolerance Applications (0°C to 70°C Operation):

REF02CN8#PBF and REF02CPZ from Analog Devices provide through-hole 8-DIP packages with ±1% tolerance. These parts are suitable only when operating temperature is limited to 0°C to 70°C and tolerance specifications permit ±1% accuracy.

REF02DN8#PBF from Linear Technology offers ±2% tolerance in through-hole 8-DIP package, applicable only for applications with relaxed tolerance requirements and 0°C to 70°C operating range.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. REF02DN8#PBF does not specify RoHS status and should be evaluated for regulatory compliance requirements in target applications.

Frequently Asked Questions (FAQ)

Q: Can REF02AU replace REF02AP in existing through-hole PCB designs?

A: No. REF02AU uses an 8-SOIC surface mount package, while REF02AP requires an 8-DIP through-hole package. PCB layout and footprint modifications are necessary. For through-hole compatibility, use REF02EN8#PBF or REF02HPZ instead.

Q: What is the minimum tolerance specification acceptable as a substitute?

A: REF02AP specifies ±0.3% tolerance. Substitutes must maintain ±0.3% tolerance or tighter to preserve design specifications. REF02EN8#PBF (±0.3%) and REF02HPZ (±0.5%) are acceptable. REF02CPZ (±1%) and REF02DN8#PBF (±2%) represent tolerance degradation and are suitable only when design specifications explicitly permit relaxed tolerance.

Q: Does REF02EN8#PBF meet the full operating temperature range of REF02AP?

A: REF02EN8#PBF operates from 0°C to 70°C, which is narrower than REF02AP's -40°C to 85°C range. For applications requiring full -40°C to 85°C operation, use REF02HPZ or REF02CPZ instead.

Q: What is the output current difference between REF02AP and substitute parts?

A: REF02AP delivers 21 mA maximum output current. REF02EN8#PBF, REF02HN8#PBF, REF02CN8#PBF, and REF02DN8#PBF deliver 20 mA. REF02CPZ and REF02HPZ deliver 10 mA. Verify that application load current requirements do not exceed the substitute part's rated output current.

Q: Are all substitute parts ROHS3 compliant?

A: REF02AU, REF02EN8#PBF, REF02HN8#PBF, REF02CPZ, REF02HPZ, and REF02CN8#PBF are ROHS3 compliant. REF02DN8#PBF does not specify RoHS status and requires compliance verification for regulated applications.

Q: Can REF02CPZ or REF02HPZ be used in designs requiring -40°C to 85°C operation?

A: REF02CPZ operates from -40°C to 85°C and is suitable. REF02HPZ also operates from -40°C to 85°C and is suitable. Both maintain through-hole 8-DIP package compatibility with REF02AP.

Q: What is the input voltage range compatibility for substitutes?

A: REF02AP accepts 8V to 40V input. REF02EN8#PBF and REF02HN8#PBF accept 7V to 40V (broader lower limit). REF02CPZ and REF02HPZ accept 8V to 36V (narrower upper limit). REF02CN8#PBF accepts 8V to 33V. REF02DN8#PBF accepts 8V to 30V. Verify that application input voltage remains within the substitute part's specified range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message