LM385Z-2.5RPG Equivalent & Substitute Parts

Part Overview

The LM385Z-2.5RPG is a shunt voltage reference IC manufactured by onsemi, delivering a fixed 2.5V output with ±3% tolerance. This through-hole component operates across 0°C to 70°C and is classified as Active product status. Shunt voltage references are essential in precision analog circuits for establishing stable reference voltages, bias networks, and calibration points. Finding equivalent parts becomes necessary when managing supply chain continuity, optimizing cost structures, or accommodating specific manufacturing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

LM385Z-2.5RPG

onsemiIn Stock: 2209LM385Z-2.5RPG Datasheet

Current PartRFQ

LM385LPR-2-5

Texas InstrumentsIn Stock: 12799LM385LPR-2-5 Datasheet

DirectRFQ

LM285Z-2.5/LFT7

National SemiconductorIn Stock: 18907LM285Z-2.5/LFT7 Datasheet

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LM385BLPR-2-5

Texas InstrumentsIn Stock: 12281LM385BLPR-2-5 Datasheet

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LM385BZ-2.5/LFT7

Texas InstrumentsIn Stock: 2348LM385BZ-2.5/LFT7 Datasheet

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LM385Z-2.5/LFT1

National SemiconductorIn Stock: 3062LM385Z-2.5/LFT1 Datasheet

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LM385Z-2.5/LFT2

Texas InstrumentsIn Stock: 3546LM385Z-2.5/LFT2 Datasheet

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LM385Z-2.5/NOPB

Texas InstrumentsIn Stock: 18933LM385Z-2.5/NOPB Datasheet

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LT1004CZ-2.5#TRPBF

Analog Devices Inc.In Stock: 2780LT1004CZ-2.5#TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM385Z-2.5RPG is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

• Reference Type: Shunt
• Output Type: Fixed
• Voltage - Output: 2.5V
• Current - Output: 20 mA
• Package / Case: TO-92-3 (TO-226AA)
• Mounting Type: Through Hole

Allowable Variation Parameters:

• Tolerance: ±3% or tighter (±1.5%, ±0.8%)
• Temperature Coefficient: May vary (80ppm/°C, 20ppm/°C, 150ppm/°C)
• Current - Cathode: May vary (20 µA, 30 µA)
• Operating Temperature: May extend beyond 0°C ~ 70°C range
• Noise - 10Hz to 10kHz: Consistent at 120µVrms across all parts

All substitute parts listed maintain identical output voltage, current rating, and physical package specifications, ensuring direct functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Tolerance ±3%): LM385LPR-2-5, LM385Z-2.5/LFT1, LM385Z-2.5/LFT2, and LM385Z-2.5/NOPB maintain the same ±3% tolerance specification as the LM385Z-2.5RPG. These parts are suitable for applications where the original tolerance specification is a design requirement. All Texas Instruments variants carry ROHS3 compliance matching the original part.

Enhanced Tolerance Substitutes (±1.5%): LM285Z-2.5/LFT7 and LM385BLPR-2-5 offer tighter ±1.5% tolerance, providing improved output voltage accuracy. LM385BLPR-2-5 maintains the 0°C ~ 70°C operating range and ROHS3 compliance. LM285Z-2.5/LFT7 extends the operating temperature range to -40°C ~ 85°C, suitable for wider environmental applications.

Premium Tolerance Substitute (±0.8%): LT1004CZ-2.5#TRPBF from Analog Devices delivers the tightest tolerance at ±0.8%, with low temperature coefficient of 20ppm/°C and ROHS3 compliance. This part is appropriate for precision reference applications requiring superior voltage stability.

All listed substitutes maintain Active product status and identical TO-92-3 package specifications, ensuring mechanical and electrical compatibility without circuit board redesign.

Frequently Asked Questions (FAQ)

Q: Can I substitute LM385Z-2.5RPG with any part from this list? A: All listed parts are electrically and mechanically compatible substitutes. Selection depends on your application's tolerance and temperature requirements. Parts with ±3% tolerance are direct replacements; tighter tolerance variants (±1.5%, ±0.8%) provide enhanced accuracy.

Q: What is the difference between ±3%, ±1.5%, and ±0.8% tolerance? A: Tolerance specifies the maximum deviation of output voltage from the nominal 2.5V value. ±3% allows ±75mV deviation; ±1.5% allows ±37.5mV; ±0.8% allows ±20mV. Tighter tolerances suit precision analog circuits; looser tolerances are acceptable for general reference applications.

Q: Does temperature coefficient affect my circuit? A: Temperature coefficient (ppm/°C) indicates voltage drift per degree Celsius change. Lower values (20ppm/°C) provide better stability across temperature variations. Higher values (150ppm/°C) may require compensation in temperature-sensitive applications. Select based on your operating environment and accuracy requirements.

Q: Are all substitutes ROHS3 compliant? A: Texas Instruments and Analog Devices variants are ROHS3 compliant. National Semiconductor parts (LM285Z-2.5/LFT7, LM385Z-2.5/LFT1) do not specify RoHS status in provided data. Verify compliance requirements with your procurement specifications.

Q: Can I use LT1004CZ-2.5#TRPBF as a drop-in replacement? A: Yes. LT1004CZ-2.5#TRPBF is mechanically and electrically compatible with identical TO-92-3 package and 2.5V/20mA specifications. Its superior ±0.8% tolerance and 20ppm/°C temperature coefficient make it suitable for applications requiring enhanced precision.

Q: What is the difference between Cut Tape and Bulk packaging? A: Cut Tape (CT) and Tape & Reel (TR) are automated assembly formats; Bulk packaging is for manual handling. All listed parts use TO-92-3 through-hole packages compatible with standard PCB assembly. Packaging format does not affect electrical performance or circuit compatibility.

Q: Which substitute offers the best temperature stability? A: LM385LPR-2-5 and LT1004CZ-2.5#TRPBF both feature 20ppm/°C temperature coefficient, the lowest among all listed parts. These provide superior voltage stability across temperature variations compared to parts with 80ppm/°C or 150ppm/°C coefficients.