REF102BP Equivalent & Substitute Parts

Part Overview

The REF102BP is a series voltage reference IC manufactured by Texas Instruments, designed to provide a fixed 10V output with ±0.05% tolerance. This through-hole 8-DIP package component is classified as a Power Management (PMIC) device and is currently listed as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning. Substitute parts must maintain the same output voltage, tolerance specifications, and electrical performance characteristics while accommodating different packaging formats or enhanced specifications.

Substiute Parts

REF102BP

Texas InstrumentsIn Stock: 2853REF102BP Datasheet

Current PartRFQ

REF102BU

Texas InstrumentsIn Stock: 1438REF102BU Datasheet

MFR RecommendedRFQ

AD587JNZ

Analog Devices Inc.In Stock: 1412AD587JNZ Datasheet

MFR RecommendedRFQ

AD587KNZ

Analog Devices Inc.In Stock: 1396AD587KNZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REF102BP are selected based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Fixed output voltage of 10V
• Output current capability of 10 mA
• Tolerance specification of ±0.05% or better
• Input voltage range compatibility (minimum 11.4V to 36V)
• Reference type classification as series voltage reference

Grouping Logic:

Group 1 - Direct Package Equivalent (Active Status): REF102BU maintains identical electrical specifications to REF102BP but differs in mounting technology (surface mount 8-SOIC versus through-hole 8-DIP) and product status (active). This part is the manufacturer's recommended successor for the obsolete REF102BP when PCB layout permits surface-mount assembly.

Group 2 - Alternative Manufacturer with Matching Tolerance (Through-Hole): AD587KNZ (Analog Devices Inc.) provides ±0.05% tolerance matching with 8-DIP through-hole packaging, maintaining form-factor compatibility. This part operates within a narrower input voltage range (14.6V ~ 36V) and narrower temperature range (0°C ~ 70°C) compared to REF102BP.

Group 3 - Alternative Manufacturer with Relaxed Tolerance (Through-Hole): AD587JNZ (Analog Devices Inc.) offers ±0.1% tolerance with 8-DIP through-hole packaging. This part is suitable for applications where the relaxed tolerance specification is acceptable and operates within the same input and temperature ranges as AD587KNZ.

Parameter Comparison

Engineering Selection Recommendations

REF102BU Selection Criteria: REF102BU is the manufacturer-recommended substitute when design specifications permit surface-mount assembly. This part maintains all electrical parameters of REF102BP while offering active product status and extended availability. Selection of REF102BU requires PCB redesign to accommodate 8-SOIC surface-mount footprint and reflow soldering processes.

AD587KNZ Selection Criteria: AD587KNZ is suitable for through-hole designs requiring ±0.05% tolerance specification. This Analog Devices part maintains the 8-DIP package format, eliminating PCB layout modifications. However, the narrower input voltage range (14.6V ~ 36V versus 11.4V ~ 36V) and operating temperature range (0°C ~ 70°C versus -25°C ~ 85°C) must be verified against circuit requirements. The higher supply current (4 mA versus 1.4 mA) impacts power budget calculations.

AD587JNZ Selection Criteria: AD587JNZ is applicable when tolerance specification can be relaxed to ±0.1%. This part offers identical package compatibility with REF102BP and active product status. The same input voltage and temperature range limitations as AD587KNZ apply. Selection is appropriate for applications where the relaxed tolerance does not compromise system performance.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with REF102BP regulatory requirements. Moisture sensitivity levels vary (REF102BP and AD587 series: MSL 1; REF102BU: MSL 2), affecting storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can REF102BU directly replace REF102BP in existing designs? A: REF102BU provides electrical equivalence but requires PCB redesign due to package format change from 8-DIP through-hole to 8-SOIC surface-mount. Electrical performance is identical; assembly process and board layout differ.

Q: What are the key differences between AD587KNZ and AD587JNZ? A: Both parts use 8-DIP through-hole packaging and are manufactured by Analog Devices. AD587KNZ specifies ±0.05% tolerance with 10 ppm/°C temperature coefficient, while AD587JNZ specifies ±0.1% tolerance with 20 ppm/°C temperature coefficient. Selection depends on tolerance requirements of the application.

Q: Are there input voltage range limitations with Analog Devices substitutes? A: Yes. AD587KNZ and AD587JNZ require minimum input voltage of 14.6V, compared to 11.4V for REF102BP. Applications operating below 14.6V input voltage cannot use these Analog Devices parts.

Q: Do operating temperature ranges differ between substitutes? A: Yes. REF102BP and REF102BU operate from -25°C to 85°C, while AD587KNZ and AD587JNZ operate from 0°C to 70°C. Applications requiring extended low-temperature operation below 0°C must use REF102BU or verify AD587 series performance at lower temperatures.

Q: What is the impact of higher supply current in AD587 parts? A: AD587KNZ and AD587JNZ draw 4 mA supply current versus 1.4 mA for REF102BP. In battery-powered or power-constrained applications, this 2.86× increase affects total system power consumption and must be evaluated against power budget constraints.

Q: Are all substitute parts RoHS compliant? A: Yes. REF102BP, REF102BU, AD587KNZ, and AD587JNZ are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute offers the best noise performance? A: AD587KNZ and AD587JNZ both specify 4 µVp-p noise (0.1Hz to 10Hz), compared to 5 µVp-p for REF102BP and REF102BU. The Analog Devices parts provide marginally lower noise characteristics.