REF02BP Equivalent & Substitute Parts

Part Overview

The REF02BP is a Series Voltage Reference IC manufactured by Texas Instruments, delivering a fixed 5V output with ±0.2% tolerance and 21 mA output current in an 8-PDIP through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The REF02BP belongs to the REF02 series of precision voltage reference ICs used in power management and analog signal conditioning applications. Substitution is driven by product availability and application-specific performance requirements.

Substiute Parts

REF02BP

Texas InstrumentsIn Stock: 1634REF02BP Datasheet

Current PartRFQ

REF02BU

Texas InstrumentsIn Stock: 9129REF02BU Datasheet

MFR RecommendedRFQ

REF02CN8#PBF

Analog Devices Inc.In Stock: 851REF02CN8#PBF Datasheet

MFR RecommendedRFQ

REF02CPZ

Analog Devices Inc.In Stock: 1429REF02CPZ Datasheet

MFR RecommendedRFQ

REF02DN8#PBF

Linear TechnologyIn Stock: 1314REF02DN8#PBF Datasheet

MFR RecommendedRFQ

REF02EN8#PBF

Analog Devices Inc.In Stock: 742REF02EN8#PBF Datasheet

MFR RecommendedRFQ

REF02HN8#PBF

Analog Devices Inc.In Stock: 1275REF02HN8#PBF Datasheet

MFR RecommendedRFQ

REF02HPZ

Analog Devices Inc.In Stock: 1739REF02HPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF02BP is determined by the following critical parameters:

• Output Voltage: All substitutes maintain 5V fixed output
• Package Type: Primary substitutes retain 8-DIP through-hole mounting for direct PCB compatibility
• Tolerance & Accuracy: Substitutes range from ±0.2% to ±2%, affecting precision requirements
• Output Current Capability: Substitutes provide 10 mA to 21 mA, determining load-driving capability
• Temperature Coefficient: Ranges from 8.5 ppm/°C to 250 ppm/°C, affecting thermal stability
• Operating Temperature Range: Extended range (-40°C ~ 85°C) available in select substitutes
• Input Voltage Range: Varies from 7V ~ 40V to 8V ~ 33V depending on manufacturer
• Product Status: Active substitutes ensure long-term availability

Substitutes are grouped into two categories: same-package through-hole alternatives (8-DIP) and surface-mount alternative (8-SOIC). Selection depends on tolerance requirements, thermal performance needs, and PCB assembly method.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Same Package, Active Status):

REF02BU is the primary substitute when surface-mount assembly is acceptable. It maintains identical electrical performance (±0.2% tolerance, 10 ppm/°C temperature coefficient, 4 µVp-p noise) and extended operating temperature range (-40°C ~ 85°C) as the REF02BP, with ROHS3 compliance and active product status ensuring long-term availability.

Through-Hole Alternatives (8-DIP Package):

For applications requiring through-hole mounting and extended temperature operation (-40°C ~ 85°C), REF02CPZ and REF02HPZ are active substitutes. REF02CPZ offers ±1% tolerance with 65 ppm/°C temperature coefficient, suitable for less stringent precision applications. REF02HPZ provides ±0.5% tolerance with 25 ppm/°C temperature coefficient, offering improved thermal stability.

REF02EN8#PBF delivers superior thermal performance with 8.5 ppm/°C temperature coefficient and ±0.3% tolerance, though operating temperature is limited to 0°C ~ 70°C.

Lower Precision Alternatives:

REF02CN8#PBF and REF02DN8#PBF are suitable only for applications where ±1% and ±2% tolerance respectively are acceptable. REF02DN8#PBF exhibits significantly higher temperature coefficient (250 ppm/°C) and higher supply current (2 mA), making it suitable only for non-critical reference applications.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. REF02BU, REF02CPZ, REF02EN8#PBF, REF02HN8#PBF, and REF02HPZ are confirmed ROHS3 compliant with active product status, ensuring regulatory compliance and procurement continuity.

Frequently Asked Questions (FAQ)

Q: Can REF02BU replace REF02BP directly on the PCB?

A: REF02BU is electrically equivalent but uses 8-SOIC surface-mount packaging instead of 8-DIP through-hole. Direct PCB replacement requires redesign of the footprint and assembly method. Electrical performance is identical.

Q: Which substitute maintains the lowest tolerance?

A: REF02BP and REF02BU both maintain ±0.2% tolerance. REF02EN8#PBF offers ±0.3% tolerance as the next tightest specification among through-hole alternatives.

Q: What is the impact of temperature coefficient differences?

A: Temperature coefficient determines output voltage drift across operating temperature range. REF02BP has 10 ppm/°C; REF02EN8#PBF has 8.5 ppm/°C (better stability); REF02DN8#PBF has 250 ppm/°C (significantly higher drift). Selection depends on application temperature range and acceptable voltage variation.

Q: Are all substitutes RoHS compliant?

A: REF02BU, REF02CPZ, REF02EN8#PBF, REF02HN8#PBF, and REF02HPZ are confirmed ROHS3 compliant. REF02CN8#PBF and REF02DN8#PBF compliance status is confirmed as ROHS3 compliant based on available data.

Q: Which substitute supports the full -40°C ~ 85°C operating range?

A: REF02BU, REF02CPZ, and REF02HPZ maintain the full -40°C ~ 85°C operating temperature range. Other through-hole alternatives are limited to 0°C ~ 70°C.

Q: What is the difference between 20 mA and 21 mA output current?

A: REF02BP provides 21 mA output current. Most substitutes provide 20 mA. This 1 mA difference is negligible for most applications. REF02CPZ and REF02HPZ provide only 10 mA, suitable for lower-current reference applications.

Q: Can I use REF02DN8#PBF as a cost-effective alternative?

A: REF02DN8#PBF is the lowest-cost option with ±2% tolerance and 250 ppm/°C temperature coefficient. It is suitable only for applications where voltage reference precision is not critical and operating temperature is limited to 0°C ~ 70°C.