REF5050IDRG4 Equivalent & Substitute Parts

Part Overview

The REF5050IDRG4 is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 5V output with ±0.05% tolerance. This precision reference is designed for applications requiring stable voltage references in power management circuits. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts maintain the core electrical specifications while offering improved availability and, in some cases, enhanced performance characteristics.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	10 mA
Tolerance	±0.05%
Temperature Coefficient	3 ppm/°C
Input Voltage Range	5.2V ~ 18V
Supply Current	1.2 mA
Operating Temperature	-40°C ~ 125°C
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the REF5050IDRG4 is determined by the following critical parameters:

Output Voltage: All substitutes must deliver fixed 5V output
Output Current: Minimum 10 mA capability required
Package Type: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting: Surface mount technology
Operating Temperature Range: -40°C to 125°C minimum
Input Voltage Compatibility: 5.2V to 18V minimum range

Substitute parts are grouped into two categories based on tolerance and performance characteristics:

Category 1 - Direct Parametric Equivalents (±0.05% tolerance): REF5050IDR maintains identical electrical specifications with improved availability and active product status.

Category 2 - Functional Equivalents (±0.1% to ±0.06% tolerance): ADR02WARZ-REEL, ADR02WARZ-REEL7, MAX875AESA+, MAX875AESA+T, MAX875BESA+, and MAX875BESA+T provide compatible 5V fixed output with relaxed tolerance specifications suitable for applications where ±0.05% precision is not mandatory.

Category 3 - Extended Operating Range (±0.15% tolerance): LTC1798CS8-5#PBF and LTC1798CS8-5#TRPBF offer lower supply current (8.5µA) but operate within 0°C to 70°C temperature range, suitable for limited-temperature applications.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Tolerance	Temp Coeff (ppm/°C)	Input Range	Supply Current	Operating Temp	Product Status
REF5050IDRG4	Texas Instruments	5V	±0.05%	3	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	Obsolete
REF5050IDR	Texas Instruments	5V	±0.05%	3	5.2V ~ 18V	1.2 mA	-40°C ~ 125°C	Active
ADR02WARZ-REEL	Analog Devices Inc.	5V	±0.1%	10	7V ~ 26V	1 mA	-40°C ~ 125°C	Active
ADR02WARZ-REEL7	Analog Devices Inc.	5V	±0.1%	10	7V ~ 26V	1 mA	-40°C ~ 125°C	Active
MAX875AESA+	Analog Devices Inc./Maxim Integrated	5V	±0.04%	7	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875AESA+T	Analog Devices Inc./Maxim Integrated	5V	±0.04%	7	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875BESA+	Analog Devices Inc./Maxim Integrated	5V	±0.06%	20	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
MAX875BESA+T	Analog Devices Inc./Maxim Integrated	5V	±0.06%	20	7V ~ 18V	700 µA	-40°C ~ 85°C	Active
LTC1798CS8-5#PBF	Analog Devices Inc.	5V	±0.15%	40	5.2V ~ 12.6V	8.5 µA	0°C ~ 70°C	Active
LTC1798CS8-5#TRPBF	Analog Devices Inc.	5V	±0.15%	40	5.2V ~ 12.6V	8.5 µA	0°C ~ 70°C	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): REF5050IDR is the primary substitute, offering identical electrical performance to the obsolete REF5050IDRG4 while maintaining active product status. Both parts are manufactured by Texas Instruments with ±0.05% tolerance, 3 ppm/°C temperature coefficient, and -40°C to 125°C operating range. REF5050IDR is available in higher quantities (17,618 units in stock) and supports both Cut Tape and Digi-Reel packaging options.

For Automotive and Extended Reliability Applications: ADR02WARZ-REEL and ADR02WARZ-REEL7 (Analog Devices Inc.) are manufacturer-recommended alternatives with automotive-grade qualification. These parts feature ±0.1% tolerance and extended input voltage range (7V to 26V), providing broader system compatibility. MSL rating of 1 (Unlimited) indicates superior moisture resistance compared to the original part's MSL 2 rating.

For Superior Tolerance Performance: MAX875AESA+ and MAX875AESA+T deliver ±0.04% tolerance, exceeding the original ±0.05% specification. These parts offer lower temperature coefficient (7 ppm/°C) and reduced noise characteristics. Operating temperature is limited to -40°C to 85°C, requiring verification against system requirements.

For Cost-Optimized Applications: MAX875BESA+ and MAX875BESA+T provide ±0.06% tolerance with reduced supply current (700 µA vs. 1.2 mA), suitable for power-sensitive designs where the relaxed tolerance is acceptable.

For Ultra-Low Power Applications: LTC1798CS8-5#PBF and LTC1798CS8-5#TRPBF feature minimal supply current (8.5 µA) but operate within 0°C to 70°C range and narrower input voltage window (5.2V to 12.6V). These are suitable only for temperature-controlled environments.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can REF5050IDR be used as a direct drop-in replacement for REF5050IDRG4?

A: Yes. REF5050IDR is a parametric equivalent with identical output voltage (5V), tolerance (±0.05%), temperature coefficient (3 ppm/°C), input range (5.2V to 18V), and operating temperature (-40°C to 125°C). The primary difference is product status (Active vs. Obsolete) and packaging options. Pin configuration and electrical performance are identical.

Q: What is the key difference between ADR02WARZ-REEL and MAX875AESA+?

A: ADR02WARZ-REEL offers ±0.1% tolerance with extended input range (7V to 26V) and full -40°C to 125°C operating temperature. MAX875AESA+ provides superior ±0.04% tolerance but operates only to 85°C and accepts narrower input range (7V to 18V). Selection depends on system temperature requirements and tolerance criticality.

Q: Are the LTC1798 parts suitable for all applications requiring REF5050IDRG4?

A: No. LTC1798CS8-5#PBF and LTC1798CS8-5#TRPBF operate within 0°C to 70°C, which is narrower than the original -40°C to 125°C range. These parts are suitable only for applications with limited operating temperature requirements. Additionally, input voltage range is restricted to 5.2V to 12.6V.

Q: What packaging options are available for substitute parts?

A: REF5050IDR supports Cut Tape (CT) and Digi-Reel packaging. ADR02WARZ-REEL and ADR02WARZ-REEL7 differ in packaging designation. MAX875AESA+ is supplied in Tube, while MAX875AESA+T is Tape & Reel. LTC1798CS8-5#PBF is Tube packaging; LTC1798CS8-5#TRPBF is Tape & Reel. Verify packaging compatibility with assembly equipment before selection.

Q: Do all substitute parts meet the same compliance standards as REF5050IDRG4?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status. Moisture Sensitivity Level varies: REF5050IDRG4 and REF5050IDR are MSL 2 (1 Year), while ADR02 and MAX875 series are MSL 1 (Unlimited), indicating superior moisture resistance in the substitutes.

Q: Which substitute offers the best balance of performance and availability?

A: REF5050IDR provides identical electrical specifications with significantly higher inventory (17,618 units) and active product status. For applications requiring enhanced performance, MAX875AESA+T offers superior tolerance (±0.04%) with good availability (2,204 units) and Tape & Reel packaging suitable for automated assembly.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message