LM2931AZ-5.0RP Equivalent & Substitute Parts

Part Overview

The LM2931AZ-5.0RP is a linear voltage regulator IC from onsemi, delivering a fixed 5V output at 100mA in a TO-92-3 package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides positive fixed output regulation with integrated over-current and over-temperature protection, suitable for applications requiring low-current 5V regulation from input sources up to 26V.

Substiute Parts

LM2931AZ-5.0RP

onsemiIn Stock: 942LM2931AZ-5.0RP Datasheet

Current PartRFQ

LM2931AZ-5.0RPG

onsemiIn Stock: 12943LM2931AZ-5.0RPG Datasheet

DirectRFQ

LM2931Z-5.0RPG

onsemiIn Stock: 3041LM2931Z-5.0RPG Datasheet

Parametric EquivalentRFQ

LM2931Z-5.0/NOPB

Texas InstrumentsIn Stock: 17845LM2931Z-5.0/NOPB Datasheet

SimilarRFQ

TL750L05CLPR

Texas InstrumentsIn Stock: 1503TL750L05CLPR Datasheet

SimilarRFQ

TL750L05CLPRE3

Texas InstrumentsIn Stock: 2655TL750L05CLPRE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2931AZ-5.0RP is determined by the following critical parameters:

• Fixed output voltage of 5V
• Output current capability of 100mA or greater
• Input voltage tolerance up to 26V
• TO-92-3 package compatibility
• Through-hole mounting configuration
• Operating temperature range support

Substitute parts are grouped into three categories:

Direct Manufacturer Equivalent: LM2931AZ-5.0RPG matches all electrical and mechanical specifications with identical output current (100mA) and identical package configuration. This part is from the same manufacturer (onsemi) and maintains full compatibility.

Parametric Equivalent: LM2931Z-5.0RPG provides identical electrical performance with the same output current (100mA) and package type, differing only in manufacturing code designation within the onsemi product line.

Similar Alternatives: LM2931Z-5.0/NOPB (Texas Instruments) and TL750L05CLPR/TL750L05CLPRE3 (Texas Instruments) provide functional equivalence with 5V fixed output and TO-92-3 packaging. These parts may have variations in output current capability, dropout voltage, or protection features that require design verification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: LM2931AZ-5.0RPG is the primary substitute, offering identical electrical specifications and active product status from onsemi. This part is ROHS3 compliant and maintains full backward compatibility with the obsolete LM2931AZ-5.0RP.

For Active Inventory: LM2931Z-5.0RPG provides equivalent performance with active status and higher inventory availability (2993 pcs). Both onsemi parts are ROHS3 compliant and suitable for new designs.

For Extended Current Capability: TL750L05CLPR and TL750L05CLPRE3 offer 150mA output current, exceeding the original 100mA specification. These parts are active and ROHS3 compliant but operate at a reduced minimum temperature (0°C vs. -40°C). Selection requires verification that the application does not require operation below 0°C.

For Legacy System Maintenance: LM2931Z-5.0/NOPB (Texas Instruments) provides functional equivalence with improved dropout voltage (0.3V vs. 0.6V). This part is classified as Last Time Buy, limiting availability for future procurement. Operating temperature range is reduced to -40°C ~ 85°C.

All substitute parts maintain TO-92-3 through-hole packaging and 5V fixed output voltage, ensuring mechanical and electrical compatibility within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can LM2931AZ-5.0RPG be used as a direct replacement for LM2931AZ-5.0RP?

A: Yes. LM2931AZ-5.0RPG is a direct equivalent with identical electrical specifications (5V output, 100mA current, 0.6V dropout), identical package (TO-92-3), and active product status. The primary difference is manufacturing code designation and RoHS3 compliance status.

Q: What is the difference between LM2931AZ-5.0RPG and LM2931Z-5.0RPG?

A: Both parts are onsemi products with identical electrical and mechanical specifications. The difference lies in manufacturing code designation (AZ vs. Z). Both are active, ROHS3 compliant, and suitable for new designs. LM2931Z-5.0RPG has higher inventory availability.

Q: Can TL750L05CLPR replace the LM2931AZ-5.0RP?

A: TL750L05CLPR provides functional equivalence with 5V output and TO-92-3 packaging. However, it delivers 150mA output current (vs. 100mA) and operates at 0°C ~ 125°C (vs. -40°C ~ 125°C). Use this part only if the application does not require operation below 0°C and the higher current capability is acceptable.

Q: Why is LM2931Z-5.0/NOPB classified as Last Time Buy?

A: Last Time Buy status indicates the manufacturer (Texas Instruments) has discontinued this product and will not accept new orders after a specified date. Existing inventory may be available, but this part should not be selected for new designs requiring long-term availability.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts (LM2931AZ-5.0RPG, LM2931Z-5.0RPG, TL750L05CLPR, TL750L05CLPRE3) are ROHS3 compliant. LM2931Z-5.0/NOPB is also ROHS3 compliant but has Last Time Buy status.

Q: What is the impact of different dropout voltages on circuit design?

A: Dropout voltage determines the minimum input-to-output voltage differential required for regulation. LM2931Z-5.0/NOPB has 0.3V dropout (lower), while other parts have 0.6V dropout (higher). Lower dropout voltage allows operation with lower input voltages. Verify your application's input voltage range supports the selected part's dropout specification.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, all substitute parts use identical TO-92-3 through-hole packaging with the same pin configuration and lead spacing. PCB layout compatibility is maintained across all listed alternatives.