REF102CUG4 Equivalent & Substitute Parts

Part Overview

The REF102CUG4 is a series voltage reference IC manufactured by Texas Instruments, designed to provide a fixed 10V output with ±0.025% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in an 8-SOIC surface mount configuration. The REF102CUG4 is currently listed as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across output voltage, current capacity, tolerance specifications, and physical packaging standards.

Substiute Parts

REF102CUG4

Texas InstrumentsIn Stock: 16181REF102CUG4 Datasheet

Current PartRFQ

REF102CU

Texas InstrumentsIn Stock: 1386REF102CU Datasheet

MFR RecommendedRFQ

AD587JRZ

Analog Devices Inc.In Stock: 3900AD587JRZ Datasheet

MFR RecommendedRFQ

AD587JRZ-REEL

Analog Devices Inc.In Stock: 10014AD587JRZ-REEL Datasheet

MFR RecommendedRFQ

AD587JRZ-REEL7

Analog Devices Inc.In Stock: 1213AD587JRZ-REEL7 Datasheet

MFR RecommendedRFQ

AD587KRZ

Analog Devices Inc.In Stock: 1924AD587KRZ Datasheet

MFR RecommendedRFQ

AD587KRZ-REEL

Analog Devices Inc.In Stock: 10348AD587KRZ-REEL Datasheet

MFR RecommendedRFQ

AD587KRZ-REEL7

Analog Devices Inc.In Stock: 2728AD587KRZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REF102CUG4 are grouped based on the following critical electrical and mechanical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Fixed 10V output voltage
• 10 mA output current capacity
• 8-SOIC surface mount package (0.154", 3.90mm Width)
• Input voltage range compatibility (minimum 11.4V supply capability)
• RoHS3 compliance

Tolerance and Performance Tiers: Substitutes are available across three tolerance grades. The REF102CUG4 operates at ±0.025% tolerance with 2.5 ppm/°C temperature coefficient. Substitute parts from Texas Instruments (REF102CU) maintain identical electrical specifications. Analog Devices AD587 series parts provide functional equivalence with relaxed tolerance specifications (±0.1% and ±0.05% grades available), different temperature coefficients, and modified operating temperature ranges.

Packaging Variants: Substitute parts are available in Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® packaging configurations. These packaging differences do not affect electrical performance but impact procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

REF102CU (Texas Instruments) REF102CU is the direct Texas Instruments equivalent to the obsolete REF102CUG4. It maintains identical electrical specifications including ±0.025% tolerance, 2.5 ppm/°C temperature coefficient, and -25°C to 85°C operating temperature range. The only difference is packaging format (Tube vs. original configuration). This part is currently in active production status and carries ROHS3 compliance with MSL 2 rating. Selection of REF102CU is appropriate for applications requiring the original performance characteristics without tolerance relaxation.

AD587KRZ and AD587KRZ-REEL (Analog Devices Inc.) The AD587K grade from Analog Devices provides ±0.05% tolerance with 10 ppm/°C temperature coefficient, representing a middle-ground performance tier between the original REF102CUG4 and the lower-grade AD587J. These parts are active production items with superior MSL 1 (Unlimited) moisture sensitivity rating. The input voltage minimum is 14.6V (versus 11.4V for REF102CUG4), and supply current is 4 mA (versus 1.4 mA). Operating temperature range is 0°C to 70°C. AD587KRZ-REEL provides Tape & Reel packaging for high-volume assembly; AD587KRZ provides Tube packaging for lower-volume applications.

AD587JRZ and AD587JRZ-REEL (Analog Devices Inc.) The AD587J grade offers ±0.1% tolerance with 20 ppm/°C temperature coefficient, suitable for applications where tolerance relaxation is acceptable. These parts share the same input voltage minimum (14.6V), supply current (4 mA), and operating temperature range (0°C to 70°C) as the AD587K grade. AD587JRZ-REEL provides Tape & Reel packaging; AD587JRZ provides Tube packaging. MSL 1 (Unlimited) rating applies to both variants.

AD587KRZ-REEL7 and AD587JRZ-REEL7 (Analog Devices Inc.) These Cut Tape (CT) & Digi-Reel® packaging variants provide identical electrical specifications to their standard Tape & Reel counterparts (AD587KRZ-REEL and AD587JRZ-REEL respectively). Selection between standard Tape & Reel and Digi-Reel® packaging depends on assembly equipment compatibility and procurement workflow requirements.

Compliance and Regulatory Status All substitute parts maintain ROHS3 compliance and REACH Unaffected status, consistent with the original REF102CUG4. Moisture sensitivity levels differ: REF102CU retains MSL 2 (1 Year) rating, while all Analog Devices AD587 variants provide superior MSL 1 (Unlimited) rating, reducing moisture-related handling constraints during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can REF102CU directly replace REF102CUG4 in existing designs? A: Yes. REF102CU maintains identical electrical specifications (±0.025% tolerance, 2.5 ppm/°C temperature coefficient, -25°C to 85°C operating range, 10V fixed output, 10 mA output current). The only difference is packaging format. Both are ROHS3 compliant. REF102CU is the recommended direct substitute for the obsolete REF102CUG4.

Q: What are the key differences between AD587K and AD587J grades? A: AD587K provides ±0.05% tolerance with 10 ppm/°C temperature coefficient. AD587J provides ±0.1% tolerance with 20 ppm/°C temperature coefficient. Both share identical output voltage (10V), output current (10 mA), input voltage range (14.6V ~ 36V), supply current (4 mA), and operating temperature (0°C ~ 70°C). Selection depends on tolerance and temperature stability requirements of the application.

Q: Are there operating temperature limitations when using AD587 series parts? A: Yes. AD587 series parts operate from 0°C to 70°C, compared to REF102CUG4 and REF102CU which operate from -25°C to 85°C. Applications requiring operation below 0°C or above 70°C must use REF102CU. Applications within the 0°C to 70°C range can use AD587 series parts.

Q: What is the minimum input voltage requirement for each part? A: REF102CUG4 and REF102CU require minimum 11.4V input. AD587 series parts (all grades and packaging variants) require minimum 14.6V input. Circuit designs must provide adequate input voltage headroom for the selected part.

Q: How do packaging variants (Tube, Tape & Reel, Cut Tape & Digi-Reel) affect electrical performance? A: Packaging variants do not affect electrical performance. All variants of a given part number (e.g., AD587KRZ, AD587KRZ-REEL, AD587KRZ-REEL7) provide identical electrical specifications. Packaging selection is determined by assembly equipment compatibility, procurement volume, and supply chain requirements.

Q: What is the difference in supply current consumption between parts? A: REF102CUG4 and REF102CU consume 1.4 mA supply current. All AD587 series parts consume 4 mA supply current. Applications with strict power budget constraints should account for this 2.6 mA difference when evaluating AD587 substitutes.

Q: Are all substitute parts ROHS3 compliant? A: Yes. REF102CUG4, REF102CU, and all AD587 series variants are ROHS3 compliant. All parts are REACH Unaffected. Regulatory compliance is maintained across all substitute options.

Q: What is the moisture sensitivity level (MSL) difference, and does it matter? A: REF102CUG4 and REF102CU carry MSL 2 (1 Year) rating, requiring controlled storage conditions. AD587 series parts carry MSL 1 (Unlimited) rating, allowing indefinite storage without moisture control. For applications with extended storage or humid environments, AD587 series parts provide superior moisture tolerance.