REF02APG4 Equivalent & Substitute Parts

Part Overview

The REF02APG4 is a Series Voltage Reference IC manufactured by Texas Instruments, designed to provide a fixed 5V output with ±0.3% tolerance. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The REF02APG4 operates across an input voltage range of 8V to 40V and delivers 21 mA output current, suitable for precision voltage reference applications in power management circuits.

Substiute Parts

REF02APG4

Texas InstrumentsIn Stock: 694REF02APG4 Datasheet

Current PartRFQ

REF02AU

Texas InstrumentsIn Stock: 27401REF02AU 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 REF02APG4 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 ~ 85°C minimum
• Input voltage range: Must accommodate 8V ~ 40V

Substitution Categories:

Category 1: Direct Electrical Equivalents (Through Hole, ±0.3% Tolerance) Parts meeting all primary criteria with identical tolerance and temperature range specifications. These provide direct replacement capability without design modification.

Category 2: Functional Equivalents (Through Hole, Relaxed Tolerance) Parts with Through Hole mounting and 8-DIP package but with tolerance specifications of ±0.5% or ±1%. These maintain package compatibility and mounting type but with reduced precision specifications.

Category 3: Surface Mount Alternative (Active Status) The REF02AU provides an active-status alternative with identical electrical specifications but requires PCB redesign due to Surface Mount packaging (8-SOIC).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required):

REF02EN8#PBF is the primary recommended substitute. It maintains Through Hole 8-DIP packaging, ±0.3% tolerance specification, and -40°C ~ 85°C operating temperature range. This part is manufactured by Analog Devices Inc. with Active product status and ROHS3 compliance. The input voltage range extends to 7V minimum (versus 8V for the main part), providing broader input compatibility. Supply current and output current specifications are equivalent.

REF02CPZ provides an alternative with identical tolerance and temperature range but delivers 10 mA output current versus 21 mA. This part is suitable only for applications requiring lower output current. It maintains Through Hole 8-DIP packaging and Active product status.

For Surface Mount Applications:

REF02AU offers Active product status with identical electrical specifications (±0.3% tolerance, 21 mA output, -40°C ~ 85°C operating range) but requires PCB redesign due to 8-SOIC Surface Mount packaging. This part is recommended only when PCB layout modifications are acceptable.

For Relaxed Tolerance Applications:

REF02HN8#PBF and REF02HPZ provide ±0.5% tolerance with Through Hole 8-DIP packaging and Active status. These parts are suitable for applications where ±0.3% precision is not required. REF02HN8#PBF delivers 20 mA output current; REF02HPZ delivers 10 mA.

REF02CN8#PBF and REF02CPZ offer ±1% tolerance specifications. These parts are suitable only for applications with relaxed precision requirements and operate within 0°C ~ 70°C temperature range, which does not cover the full -40°C ~ 85°C specification of the main part.

REF02DN8#PBF provides ±2% tolerance and is suitable only for applications with minimal precision requirements. Operating temperature range is limited to 0°C ~ 70°C.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. MSL ratings vary; parts with MSL 1 (Unlimited) are preferred for applications with extended storage or high-humidity environments.

Frequently Asked Questions (FAQ)

Q: Can REF02EN8#PBF directly replace REF02APG4 without PCB modifications?

A: Yes. REF02EN8#PBF maintains identical Through Hole 8-DIP packaging, ±0.3% tolerance, and -40°C ~ 85°C operating temperature range. No PCB layout changes are required. The part is manufactured by Analog Devices Inc. with Active product status.

Q: What is the difference between REF02CPZ and REF02EN8#PBF?

A: Both parts maintain ±0.3% tolerance and Through Hole 8-DIP packaging. The primary difference is output current: REF02CPZ delivers 10 mA while REF02EN8#PBF delivers 20 mA. REF02EN8#PBF is the appropriate choice for applications requiring 21 mA output current from the original REF02APG4.

Q: Why is REF02AU not recommended as a direct replacement?

A: REF02AU uses 8-SOIC Surface Mount packaging, whereas REF02APG4 uses Through Hole 8-DIP packaging. While electrical specifications are identical, this packaging difference requires PCB redesign and is not a direct replacement.

Q: Can I use REF02DN8#PBF as a substitute?

A: REF02DN8#PBF is not recommended for applications requiring ±0.3% tolerance. This part specifies ±2% tolerance and operates only within 0°C ~ 70°C, which does not cover the full -40°C ~ 85°C operating range of REF02APG4. Use only if your application permits ±2% tolerance and operates within the narrower temperature range.

Q: What does MSL rating mean for this component?

A: MSL (Moisture Sensitivity Level) indicates the component's sensitivity to moisture during storage and handling. MSL 1 (Unlimited) means the part has no moisture sensitivity restrictions. MSL 3 (168 Hours) means the part must be used within 168 hours of package opening. For applications with extended storage, select parts with MSL 1 rating.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitutes except REF02DN8#PBF explicitly specify ROHS3 compliance. REF02DN8#PBF does not include RoHS status in the provided specifications.

Q: What is the input voltage range difference between REF02EN8#PBF and REF02APG4?

A: REF02APG4 specifies 8V ~ 40V input range. REF02EN8#PBF specifies 7V ~ 40V input range. REF02EN8#PBF provides broader low-voltage compatibility, accepting inputs as low as 7V versus 8V for the original part.