REF3330AIDBZR Equivalent & Substitute Parts

Part Overview

The REF3330AIDBZR is a series voltage reference IC manufactured by Texas Instruments, designed for precision power management applications. This fixed 3V output reference operates with ±0.15% tolerance and delivers 5 mA output current in a compact SOT-23-3 surface mount package. The device is classified as Active product status and maintains full ROHS3 compliance with REACH unaffected designation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges. Alternative sources provide design flexibility, supply chain redundancy, and performance optimization for specific application requirements.

Key Parameters

Parameter	REF3330AIDBZR
Reference Type	Series
Output Type	Fixed
Voltage - Output (Min/Fixed)	3V
Current - Output	5 mA
Tolerance	±0.15%
Temperature Coefficient	30ppm/°C
Voltage - Input	3.2V ~ 5.5V
Current - Supply	8.5µA
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Output voltage: 3V fixed
Package type: SOT-23-3 surface mount
Input voltage range: 3.2V ~ 5.5V minimum compatibility
Reference type: Series configuration
Output type: Fixed voltage
RoHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical specifications across all key parameters, differing only in packaging format (Cut Tape vs. Tape & Reel).

Manufacturer Recommended Alternatives: Parts from alternative manufacturers meeting the core electrical requirements with variations in tolerance, temperature coefficient, noise characteristics, or supply current that remain within acceptable substitution boundaries for the 3V fixed reference application.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Tolerance	Temperature Coefficient	Current - Output	Current - Supply	Noise 0.1Hz-10Hz	Operating Temperature	Packaging	RoHS Status
REF3330AIDBZR	Texas Instruments	±0.15%	30ppm/°C	5 mA	8.5µA	84µVp-p	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
REF3330AIDBZT	Texas Instruments	±0.15%	30ppm/°C	5 mA	8.5µA	84µVp-p	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
ISL60002BIH330Z-TK	Renesas Electronics Corporation	±0.03%	20ppm/°C	7 mA	900nA	30µVp-p	-40°C ~ 85°C	Tape & Reel (TR)	ROHS3 Compliant
ISL60002CIH330Z-TK	Renesas Electronics Corporation	±0.08%	20ppm/°C	7 mA	900nA	30µVp-p	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
ISL60002DIH330Z-TK	Renesas Electronics Corporation	±0.17%	20ppm/°C	7 mA	900nA	30µVp-p	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
MAX6010AEUR+T	Analog Devices Inc./Maxim Integrated	±0.2%	50ppm/°C	7 mA	6µA	100µVp-p	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
MAX6063AEUR+T	Analog Devices Inc./Maxim Integrated	±0.2%	20ppm/°C	5 mA	125µA	35µVp-p	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant
MAX6063BEUR+T	Analog Devices Inc./Maxim Integrated	±0.4%	30ppm/°C	5 mA	125µA	35µVp-p	-40°C ~ 85°C	Tape & Reel (TR)	ROHS3 Compliant
MAX6103EUR+T	Analog Devices Inc./Maxim Integrated	±0.4%	75ppm/°C	5 mA	125µA	35µVp-p	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance with REACH unaffected designation, meeting regulatory requirements equivalent to the REF3330AIDBZR.

REF3330AIDBZT provides direct parametric equivalence with identical electrical specifications and differs only in packaging format designation. This part is suitable for direct replacement in applications where packaging format flexibility is acceptable.

ISL60002 Series (Renesas Electronics Corporation) offers enhanced performance characteristics with improved tolerance (±0.03% to ±0.17%), lower temperature coefficient (20ppm/°C), and significantly reduced supply current (900nA). The ISL60002CIH330Z-TK variant provides the closest tolerance match to the original specification at ±0.08% with Cut Tape packaging. Operating temperature range extends to -40°C minimum but limits to 85°C maximum, requiring verification for applications requiring 125°C operation.

MAX6010AEUR+T (Analog Devices Inc./Maxim Integrated) delivers 7 mA output current with ±0.2% tolerance and maintains the full input voltage range. This part is suitable for applications requiring higher output current capacity.

MAX6063 Series (Analog Devices Inc./Maxim Integrated) matches the 5 mA output current specification with ±0.2% to ±0.4% tolerance range. The MAX6063AEUR+T variant provides optimal tolerance performance at ±0.2%. Input voltage range extends to 12.6V maximum, supporting broader supply voltage applications. Supply current requirement of 125µA exceeds the original specification and requires circuit design consideration.

MAX6103EUR+T provides 5 mA output current with ±0.4% tolerance and extended input voltage range to 12.6V. Higher temperature coefficient (75ppm/°C) and elevated supply current (125µA) require application-specific evaluation.

Frequently Asked Questions (FAQ)

Q: Can REF3330AIDBZT replace REF3330AIDBZR directly?

A: Yes. REF3330AIDBZT is a parametric equivalent with identical electrical specifications. The designation difference reflects packaging format variation (Cut Tape & Digi-Reel® designation). Both parts are functionally interchangeable in circuit design.

Q: What are the key differences between Texas Instruments and Renesas alternatives?

A: Renesas ISL60002 series parts offer superior tolerance accuracy (±0.03% to ±0.17%), lower temperature coefficient (20ppm/°C), and significantly reduced supply current (900nA vs. 8.5µA). Operating temperature range is limited to -40°C ~ 85°C, compared to the original -40°C ~ 125°C specification. These characteristics make ISL60002 variants suitable for precision applications where supply current minimization is critical.

Q: Are Maxim Integrated MAX6063 and MAX6103 parts suitable substitutes?

A: MAX6063 and MAX6103 parts maintain the 5 mA output current and 3V fixed output voltage. Tolerance specifications range from ±0.2% to ±0.4%, which is broader than the original ±0.15%. Supply current requirement increases to 125µA, requiring circuit design verification. Input voltage range extends to 12.6V, supporting broader supply applications. Operating temperature is limited to -40°C ~ 85°C.

Q: What packaging formats are available?

A: Substitute parts are available in Cut Tape (CT) & Digi-Reel® format and Tape & Reel (TR) format. All parts maintain SOT-23-3 package type. Packaging format selection depends on procurement and assembly process requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the REF3330AIDBZR.

Q: Which substitute part offers the best tolerance performance?

A: ISL60002BIH330Z-TK provides the tightest tolerance specification at ±0.03%, representing a significant improvement over the original ±0.15%. This part is suitable for applications requiring maximum output voltage accuracy.

Q: What is the impact of supply current differences on circuit design?

A: The original REF3330AIDBZR requires 8.5µA supply current. Renesas ISL60002 series parts reduce this to 900nA, improving overall circuit efficiency. Maxim Integrated MAX6063 and MAX6103 parts increase supply current to 125µA, requiring verification that the power supply can accommodate this additional load.

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