LM329CZ Equivalent & Substitute Parts Reference

Part Overview

The LM329CZ is a shunt buried zener voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 6.9V with a tolerance of -4.35% to +5.07%, a temperature coefficient of 100ppm/°C, and a maximum output current of 15 mA. Packaged in a TO-226-3, TO-92-3 (TO-226AA) case, this device is categorized under Power Management ICs (PMIC). The part status for the LM329CZ is Obsolete, creating the necessity to identify functionally equivalent or substitutable models for designs requiring continued support or maintenance.

Substiute Parts

LM329CZ

Texas InstrumentsIn Stock: 5284LM329CZ Datasheet

Current PartRFQ

LM329AZ#PBF

Analog Devices Inc.In Stock: 1151LM329AZ#PBF Datasheet

MFR RecommendedRFQ

LM329BZ#PBF

Analog Devices Inc.In Stock: 5855LM329BZ#PBF Datasheet

MFR RecommendedRFQ

LM329CZ#PBF

Analog Devices Inc.In Stock: 2794LM329CZ#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM329CZ are selected based on strict electrical and mechanical compatibility within the Power Management (PMIC) voltage reference category. The substitution logic requires that the device matches the following critical parameters: reference type (shunt, buried zener), output type (fixed), output voltage (6.9V), output current (15 mA), package type (TO-226-3, TO-92-3), mounting type (through hole), and compatible temperature range. Only devices with equivalent or better tolerance and temperature coefficient are considered. Other factors such as RoHS and REACH status are included for compliance purposes.

Parameter Comparison

Engineering Selection Recommendations

The LM329CZ is designated as obsolete; substitute models LM329AZ#PBF, LM329BZ#PBF, and LM329CZ#PBF from Analog Devices Inc. are all active and maintain identical key parameters within the power management (PMIC) voltage reference IC category. Substitute parts offer improved tolerance and temperature coefficient values and maintain full RoHS and REACH environmental compliance. Select substitutes based on specified compliance requirements and availability.

Frequently Asked Questions (FAQ)

Q1: What determines if a substitute part is equivalent to the LM329CZ?
A1: Substitution is determined by matching reference type, output type, fixed output voltage, output and cathode current, temperature range, mounting and package type, and compliance status.

Q2: Are LM329AZ#PBF, LM329BZ#PBF, and LM329CZ#PBF directly interchangeable with LM329CZ in circuit designs?
A2: All substitute parts share the same fixed output voltage, output current rating, package (TO-226-3, TO-92-3), and mounting type as the LM329CZ.

Q3: How does tolerance and temperature coefficient affect substitution?
A3: Substitutes meet or exceed the LM329CZ's tolerance and temperature coefficient specifications, ensuring functional compatibility within the allowed parameters.

Q4: Do substitute parts offer improved compliance?
A4: All substitute Analog Devices Inc. parts listed are ROHS3 compliant and REACH unaffected, in contrast to the RoHS non-compliant status of the original LM329CZ.

Q5: What package types are supported for substitutions in this group?
A5: All substitutes utilize the TO-226-3, TO-92-3 (TO-226AA) through-hole package, matching the LM329CZ mechanical profile.