LM2931Z-5.0 Equivalent & Substitute Parts

Part Overview

The LM2931Z-5.0 is a linear voltage regulator IC from onsemi, delivering a fixed positive 5V output at 100mA in a TO-92-3 package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The LM2931Z-5.0 provides regulated power supply functionality with integrated over-current and over-temperature protection across an operating range of -40°C to 125°C.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	100mA
Input Voltage (Max)	26V
Voltage Dropout (Max)	0.6V @ 100mA
Quiescent Current	1 mA
Operating Temperature	-40°C ~ 125°C
Package / Case	TO-226-3, TO-92-3 Long Body
Mounting Type	Through Hole
Protection Features	Over Current, Over Temperature

Substitute Part Grouping Explanation

Substitute parts for the LM2931Z-5.0 are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Output voltage: 5V fixed
Output current capability: 100mA minimum
Input voltage rating: 26V maximum
Package type: TO-92-3 (TO-226-3)
Mounting: Through Hole
Output configuration: Positive fixed regulator

Substitution Categories:

Direct Equivalent (Identical Specifications): LM2931Z-5.0G from onsemi matches all electrical and mechanical parameters of the main part, with the distinction of active product status and RoHS3 compliance.

Compatible Substitutes (Same Core Function, Allowable Parameter Variations): LM2931AZ-5.0/NOPB, LM2931AZ50R, LM2931Z-5.0/NOPB, TL750L05CLP, and TL750L05CLPE3 provide equivalent 5V fixed output regulation in TO-92-3 packages. These parts maintain the same output voltage and package form factor while operating within the same input voltage range. Variations in quiescent current, dropout voltage, PSRR, and operating temperature ranges are within acceptable tolerances for linear regulator substitution.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Operating Temperature	Package	Product Status	RoHS Status
LM2931Z-5.0	onsemi	5V	100mA	26V	0.6V @ 100mA	1 mA	-40°C ~ 125°C	TO-92-3	Obsolete	RoHS non-compliant
LM2931Z-5.0G	onsemi	5V	100mA	26V	0.6V @ 100mA	1 mA	-40°C ~ 125°C	TO-92-3	Active	RoHS3 Compliant
LM2931AZ-5.0/NOPB	Texas Instruments	5V	100mA	26V	0.3V @ 100mA	15 mA	-40°C ~ 85°C	TO-92-3	Last Time Buy	RoHS3 Compliant
LM2931AZ50R	STMicroelectronics	5V	100mA	26V	0.6V @ 100mA	1 mA	-40°C ~ 125°C	TO-92-3	Active	RoHS3 Compliant
LM2931Z-5.0/NOPB	Texas Instruments	5V	100mA	26V	0.3V @ 100mA	1 mA	-40°C ~ 85°C	TO-92-3	Last Time Buy	RoHS3 Compliant
TL750L05CLP	Texas Instruments	5V	150mA	26V	0.6V @ 150mA	2 mA	0°C ~ 125°C	TO-92-3	Active	RoHS3 Compliant
TL750L05CLPE3	Texas Instruments	5V	150mA	26V	0.6V @ 150mA	2 mA	0°C ~ 125°C	TO-92-3	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: LM2931Z-5.0G (onsemi) is the direct equivalent with identical electrical specifications. This part is currently active and RoHS3 compliant, addressing the obsolescence of the original LM2931Z-5.0 while maintaining full compatibility.

Secondary Recommendations for Active Procurement:

LM2931AZ50R (STMicroelectronics) is an active product with RoHS3 compliance and matches the original part's quiescent current (1 mA) and operating temperature range (-40°C ~ 125°C). This part provides continuity for designs requiring the full temperature range.

TL750L05CLP and TL750L05CLPE3 (Texas Instruments) are active products with higher output current capability (150mA vs. 100mA), providing design margin for applications requiring additional current headroom. Both are RoHS3 compliant. The TL750L05CLPE3 variant offers the same functionality with alternative packaging designation.

Avoid for New Designs: LM2931AZ-5.0/NOPB and LM2931Z-5.0/NOPB (Texas Instruments) are classified as Last Time Buy, indicating discontinued production. These parts should not be selected for new designs despite RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can LM2931Z-5.0G be used as a direct replacement for LM2931Z-5.0?

A: Yes. LM2931Z-5.0G is a direct equivalent with identical output voltage (5V), output current (100mA), input voltage rating (26V), dropout voltage (0.6V @ 100mA), quiescent current (1 mA), operating temperature range (-40°C ~ 125°C), and TO-92-3 package. The primary difference is product status (active vs. obsolete) and RoHS3 compliance.

Q: What is the difference between LM2931AZ50R and LM2931Z-5.0?

A: Both deliver 5V at 100mA in TO-92-3 packages with 26V maximum input voltage. LM2931AZ50R is manufactured by STMicroelectronics and is currently active. Both share identical quiescent current (1 mA) and operating temperature range (-40°C ~ 125°C). The

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message