REF5050IDR Equivalent & Substitute Parts

Part Overview

The REF5050IDR is a series voltage reference IC manufactured by Texas Instruments, delivering a fixed 5V output with ±0.05% tolerance. This precision voltage reference is designed for applications requiring stable reference voltages in power management circuits. The part is currently in active production status with 17,618 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this product category.

Key Parameters

Parameter	REF5050IDR
Manufacturer	Texas Instruments
Output Voltage	5V (Fixed)
Output Current	10 mA
Tolerance	±0.05%
Temperature Coefficient	3 ppm/°C
Input Voltage Range	5.2V ~ 18V
Operating Temperature	-40°C ~ 125°C
Package	8-SOIC
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the REF5050IDR is determined by the following critical parameters:

Output Voltage: Must be fixed at 5V
Output Current: Must support minimum 10 mA
Package Type: Must be 8-SOIC form factor
Mounting Type: Must be Surface Mount
Compliance: Must maintain ROHS3 compliance
Tolerance & Temperature Coefficient: Substitute parts may have equal or tighter (lower) tolerance and temperature coefficient values

Five substitute parts meet these criteria: ADR02WARZ-REEL7, LTC1798CS8-5#PBF, MAX875AESA+, MAX875BESA+, and MAX875BESA+T. All maintain the 5V fixed output, 10 mA output current capability, 8-SOIC package, and surface mount configuration. Tolerance and temperature coefficient specifications vary across substitutes, with some offering superior performance characteristics.

Parameter Comparison

Parameter	REF5050IDR	ADR02WARZ-REEL7	LTC1798CS8-5#PBF	MAX875AESA+	MAX875BESA+	MAX875BESA+T
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Output Voltage	5V	5V	5V	5V	5V	5V
Output Current	10 mA	10 mA	10 mA	10 mA	10 mA	10 mA
Tolerance	±0.05%	±0.1%	±0.15%	±0.04%	±0.06%	±0.06%
Temperature Coefficient	3 ppm/°C	10 ppm/°C	40 ppm/°C	7 ppm/°C	20 ppm/°C	20 ppm/°C
Input Voltage Range	5.2V ~ 18V	7V ~ 26V	5.2V ~ 12.6V	7V ~ 18V	7V ~ 18V	7V ~ 18V
Supply Current	1.2 mA	1 mA	8.5 µA	700 µA	700 µA	700 µA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

REF5050IDR (Primary Part): Active production status with highest inventory availability (17,618 units). Maintains ±0.05% tolerance and 3 ppm/°C temperature coefficient. Supports full -40°C to 125°C operating range. ROHS3 compliant.

MAX875AESA+ (Superior Performance Alternative): Offers tighter ±0.04% tolerance and 7 ppm/°C temperature coefficient. Active production status. ROHS3 compliant. Operating range -40°C to 85°C. Inventory: 1,466 units.

MAX875BESA+ and MAX875BESA+T (Balanced Alternative): Both provide ±0.06% tolerance and 20 ppm/°C temperature coefficient. Active production status. ROHS3 compliant. Operating range -40°C to 85°C. Combined inventory: 5,712 units.

ADR02WARZ-REEL7 (Extended Input Range): Supports 7V to 26V input voltage range. ±0.1% tolerance and 10 ppm/°C temperature coefficient. Active production status. ROHS3 compliant. Full -40°C to 125°C operating range. Automotive grade. Inventory: 1,115 units.

LTC1798CS8-5#PBF (Low Supply Current): Minimal supply current of 8.5 µA. ±0.15% tolerance and 40 ppm/°C temperature coefficient. Active production status. ROHS3 compliant. Operating range 0°C to 70°C. Inventory: 2,300 units.

Frequently Asked Questions (FAQ)

Q: Can MAX875AESA+ directly replace REF5050IDR? A: Yes. Both parts deliver 5V fixed output at 10 mA in 8-SOIC package. MAX875AESA+ offers superior ±0.04% tolerance versus ±0.05%. Operating temperature range differs: MAX875AESA+ supports -40°C to 85°C versus REF5050IDR's -40°C to 125°C. Verify application temperature requirements before substitution.

Q: What is the key difference between MAX875BESA+ and MAX875BESA+T? A: Both parts are electrically identical with ±0.06% tolerance and 20 ppm/°C temperature coefficient. The suffix "+T" indicates tape packaging, while MAX875BESA+ uses tube packaging. Electrical performance and pin configuration are identical.

Q: Is LTC1798CS8-5#PBF suitable for high-temperature applications? A: No. LTC1798CS8-5#PBF operates from 0°C to 70°C, which is narrower than REF5050IDR's -40°C to 125°C range. This part is suitable only for applications within its specified temperature window.

Q: Why does ADR02WARZ-REEL7 have a wider input voltage range? A: ADR02WARZ-REEL7 accepts 7V to 26V input versus REF5050IDR's 5.2V to 18V. This extended range provides flexibility for systems with variable supply voltages. Both maintain identical 5V output and 10 mA current capability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the REF5050IDR's regulatory status.

Q: Which substitute offers the best tolerance specification? A: MAX875AESA+ provides the tightest tolerance at ±0.04%, compared to REF5050IDR's ±0.05%. This represents superior output voltage accuracy.

Q: Can I use LTC1798CS8-5#PBF in a -40°C application? A: No. LTC1798CS8-5#PBF minimum operating temperature is 0°C. Applications requiring -40°C operation must use REF5050IDR, ADR02WARZ-REEL7, MAX875AESA+, MAX875BESA+, or MAX875BESA+T.

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