LM4041CILPR Equivalent & Substitute Parts

Part Overview

The LM4041CILPR is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This adjustable reference provides a fixed output of 1.233V with a maximum output capability of 10V and supports a maximum cathode current of 80µA. The device is packaged in TO-92-3 (through-hole) configuration with ±0.5% tolerance and operates across the industrial temperature range of -40°C to 85°C.

The LM4041CILPR carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this part number. This status necessitates identifying functionally equivalent substitute components to maintain design continuity and ensure long-term supply chain reliability for applications currently utilizing this reference design.

Substiute Parts

LM4041CILPR

Texas InstrumentsIn Stock: 2609LM4041CILPR Datasheet

Current PartRFQ

LM4041CIDBZR

Texas InstrumentsIn Stock: 48201LM4041CIDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM4041CILPR is determined by electrical parameter equivalence across the following critical specifications:

• Reference Type: Shunt voltage reference topology
• Output voltage range: 1.233V minimum to 10V maximum
• Output current capability: 12mA
• Tolerance specification: ±0.5%
• Temperature coefficient: 100ppm/°C
• Noise performance: 20µVrms (10Hz to 10kHz)
• Cathode current: 80µA
• Operating temperature range: -40°C to 85°C
• RoHS3 compliance and REACH unaffected status

The LM4041CIDBZR qualifies as a direct electrical substitute, maintaining identical electrical specifications while differing only in packaging format (SOT-23-3 surface mount versus TO-92-3 through hole) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The LM4041CIDBZR is the primary substitute for the LM4041CILPR based on complete electrical parameter equivalence and active product status with Texas Instruments. Both devices maintain ROHS3 compliance and REACH unaffected certification, ensuring regulatory continuity.

The primary design consideration for substitution is the transition from through-hole (TO-92-3) to surface-mount (SOT-23-3) packaging. This change requires PCB layout modification and may necessitate updates to assembly processes. The electrical performance remains identical across all specified parameters, including voltage output range, tolerance, temperature coefficient, and noise characteristics.

The LM4041CIDBZR offers superior supply chain availability with 48,092 pieces in stock compared to the LM4041CILPR's 2,574 pieces, supporting long-term production requirements and reducing procurement risk.

Frequently Asked Questions (FAQ)

Q: Are the LM4041CILPR and LM4041CIDBZR electrically identical?

A: Yes. Both devices share identical electrical specifications including 1.233V to 10V output range, ±0.5% tolerance, 100ppm/°C temperature coefficient, 20µVrms noise performance, and 80µA cathode current across the -40°C to 85°C operating range.

Q: What is the primary difference between these two part numbers?

A: The LM4041CILPR uses through-hole packaging (TO-92-3), while the LM4041CIDBZR uses surface-mount packaging (SOT-23-3). Additionally, the LM4041CIDBZR maintains Active product status, whereas the LM4041CILPR is Last Time Buy.

Q: Can I use the LM4041CIDBZR as a direct replacement on existing PCBs designed for the LM4041CILPR?

A: No. The different package types (TO-92-3 through-hole versus SOT-23-3 surface-mount) require PCB redesign. Pin configurations differ in physical layout and mounting method, necessitating new PCB artwork and assembly process updates.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LM4041CILPR and LM4041CIDBZR are ROHS3 compliant and REACH unaffected, maintaining identical regulatory status.

Q: Which part should I select for new designs?

A: The LM4041CIDBZR is the appropriate choice for new designs, as it maintains Active product status and offers superior supply chain availability. The LM4041CILPR's Last Time Buy status indicates end-of-life status and should not be selected for new development.