REF3020AIDBZRG4 Equivalent & Substitute Parts

Part Overview

The REF3020AIDBZRG4 is a series voltage reference IC from Texas Instruments, delivering a fixed 2.048V output with ±0.2% tolerance in a SOT-23-3 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The REF3020AIDBZRG4 serves applications requiring precision voltage references with low noise and stable temperature performance across industrial temperature ranges.

Substiute Parts

REF3020AIDBZRG4

Texas InstrumentsIn Stock: 6649REF3020AIDBZRG4 Datasheet

Current PartRFQ

REF3020AIDBZR

Texas InstrumentsIn Stock: 50130REF3020AIDBZR Datasheet

MFR RecommendedRFQ

REF3020AIDBZT

Texas InstrumentsIn Stock: 1575REF3020AIDBZT Datasheet

Parametric EquivalentRFQ

ISL21010CFH320Z-TK

Renesas Electronics CorporationIn Stock: 1973ISL21010CFH320Z-TK Datasheet

MFR RecommendedRFQ

ISL21080CIH315Z-TK

Renesas Electronics CorporationIn Stock: 64777ISL21080CIH315Z-TK Datasheet

MFR RecommendedRFQ

ISL21080CIH320Z-TK

Renesas Electronics CorporationIn Stock: 1694ISL21080CIH320Z-TK Datasheet

MFR RecommendedRFQ

ISL60002BIH320Z-T7A

Renesas Electronics CorporationIn Stock: 1463ISL60002BIH320Z-T7A Datasheet

MFR RecommendedRFQ

MAX6018AEUR21+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3442MAX6018AEUR21+T Datasheet

MFR RecommendedRFQ

MAX6018BEUR21+T

Analog Devices Inc./Maxim IntegratedIn Stock: 5222MAX6018BEUR21+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the REF3020AIDBZRG4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Output voltage: 2.048V fixed
• Package type: SOT-23-3 (TO-236-3, SC-59)
• Tolerance: ±0.2% or better
• Output current capability: minimum 25 mA
• Input voltage range: compatible with 2.098V ~ 5.5V
• Operating temperature: -40°C ~ 125°C or wider
• Surface mount mounting type

Substitution Categories:

Direct Equivalents (Identical Parameters): Parts matching all critical specifications including 2.048V output, ±0.2% tolerance, 25 mA output current, and full temperature range support.

Parametric Equivalents (Functional Compatibility): Parts with 2.048V output and SOT-23-3 package but with variations in tolerance, output current, temperature coefficient, or operating temperature range. These parts function as voltage references in the same applications but may have different performance characteristics.

Cross-Manufacturer Alternatives (Different Manufacturers): Parts from Renesas Electronics Corporation and Analog Devices Inc./Maxim Integrated offering 2.048V output in SOT-23-3 package with comparable electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement: REF3020AIDBZR and REF3020AIDBZT from Texas Instruments are direct parametric equivalents to the obsolete REF3020AIDBZRG4. Both parts are active products with identical electrical specifications, including 2.048V output, ±0.2% tolerance, 25 mA output current, and full -40°C to 125°C operating temperature range. Both are ROHS3 compliant and maintain the same SOT-23-3 package. REF3020AIDBZR is available in Cut Tape and Digi-Reel packaging with higher inventory (50,100 pcs), while REF3020AIDBZT is available in Cut Tape and Digi-Reel packaging with lower inventory (1,543 pcs).

Cross-Manufacturer Alternative - Renesas ISL21010CFH320Z-TK: The ISL21010CFH320Z-TK from Renesas Electronics Corporation provides functional equivalence with 2.048V output and ±0.2% tolerance in SOT-23-3 package. This part supports the full -40°C to 125°C operating temperature range required by the original specification. The ISL21010CFH320Z-TK has a lower temperature coefficient (50ppm/°C versus 75ppm/°C) and higher supply current (100µA versus 50µA). This part is active and ROHS3 compliant.

Alternative for Lower Power Applications: ISL21080CIH320Z-TK from Renesas Electronics offers 2.048V output with ±0.3% tolerance and significantly reduced supply current (1.5µA). However, this part has reduced output current capability (7 mA versus 25 mA) and operates only to -40°C to 85°C. This part is suitable only for applications not requiring the full 25 mA output current or extended upper temperature operation.

High-Precision Alternative: ISL60002BIH320Z-T7A from Renesas Electronics provides superior tolerance (±0.05%) and lower temperature coefficient (20ppm/°C) with 2.048V output. This part is limited to 7 mA output current and -40°C to 85°C operating range, making it suitable for precision reference applications with lower current requirements.

Low-Current Alternative: MAX6018AEUR21+T and MAX6018BEUR21+T from Analog Devices/Maxim Integrated provide 2.048V output in SOT-23-3 package with significantly reduced output current (1 mA) and supply current (6µA). These parts operate to -40°C to 85°C and are suitable for low-power applications. MAX6018AEUR21+T maintains ±0.2% tolerance, while MAX6018BEUR21+T has ±0.4% tolerance.

Compliance and Availability: All recommended substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating. Selection should prioritize active products with adequate inventory and packaging options suitable for production requirements.

Frequently Asked Questions (FAQ)

Q: Can REF3020AIDBZR directly replace REF3020AIDBZRG4? A: Yes. REF3020AIDBZR is a direct parametric equivalent with identical electrical specifications, including 2.048V output, ±0.2% tolerance, 25 mA output current, and -40°C to 125°C operating temperature. The primary difference is product status: REF3020AIDBZRG4 is obsolete while REF3020AIDBZR is active. Both use SOT-23-3 packaging.

Q: What is the difference between REF3020AIDBZR and REF3020AIDBZT? A: Both parts are parametrically identical with 2.048V output, ±0.2% tolerance, and 25 mA output current. The difference is in packaging format: REF3020AIDBZR is available in Cut Tape and Digi-Reel, while REF3020AIDBZT is available in Cut Tape and Digi-Reel. REF3020AIDBZR has significantly higher inventory availability.

Q: Can ISL21010CFH320Z-TK replace REF3020AIDBZRG4 in all applications? A: ISL21010CFH320Z-TK provides functional equivalence with 2.048V output, ±0.2% tolerance, and full -40°C to 125°C temperature range. However, it has higher supply current (100µA versus 50µA) and lower temperature coefficient (50ppm/°C versus 75ppm/°C). Verify that the higher supply current is acceptable for your application before substitution.

Q: Why do some substitute parts have lower output current ratings? A: ISL21080CIH320Z-TK, ISL60002BIH320Z-T7A, and MAX6018 series parts are designed for different application requirements. These parts provide 7 mA or 1 mA output current instead of 25 mA. Use these parts only if your application requires less than their rated output current. If your circuit requires 25 mA output current, select REF3020AIDBZR, REF3020AIDBZT, or ISL21010CFH320Z-TK.

Q: What is the impact of operating temperature range differences? A: REF3020AIDBZRG4 operates from -40°C to 125°C. ISL21080CIH320Z-TK, ISL21080CIH315Z-TK, ISL60002BIH320Z-T7A, MAX6018AEUR21+T, and MAX6018BEUR21+T operate only to -40°C to 85°C. If your application requires operation above 85°C, use REF3020AIDBZR, REF3020AIDBZT, or ISL21010CFH320Z-TK.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile.

Q: What packaging options are available for the recommended substitutes? A: REF3020AIDBZR is available in Cut Tape (CT) and Digi-Reel packaging. REF3020AIDBZT is available in Cut Tape and Digi-Reel packaging. ISL21010CFH320Z-TK is available in Cut Tape and Digi-Reel. ISL21080CIH320Z-TK and ISL60002BIH320Z-T7A are available in Tape & Reel (TR). MAX6018AEUR21+T is available in Cut Tape and Digi-Reel. MAX6018BEUR21+T is available in Tape & Reel (TR). Verify packaging compatibility with your assembly process requirements.

Q: Which substitute offers the best tolerance specification? A: ISL60002BIH320Z-T7A offers the tightest tolerance at ±0.05%, compared to ±0.2% for the original part. However, this part is limited to 7 mA output current and -40°C to 85°C operating range. For applications requiring both tight tolerance and 25 mA output current across the full temperature range, REF3020AIDBZR or ISL21010CFH320Z-TK are appropriate selections.

Q: Can ISL21080CIH315Z-TK be used as a substitute? A: ISL21080CIH315Z-TK is not a suitable substitute. This part outputs 1.5V instead of 2.048V, making it incompatible with circuits designed for 2.048V reference voltage. This part is listed in the original substitute list but does not meet the primary substitution criteria.