LP2950CDT-3.0G Equivalent & Substitute Parts

Part Overview

The LP2950CDT-3.0G is a linear voltage regulator IC from onsemi, designed to deliver a fixed 3V output at 100mA in a surface-mount DPAK package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across an industrial temperature range of -40°C to 125°C and includes integrated over-current and over-temperature protection.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3V
Output Current	100mA
Input Voltage (Max)	30V
Voltage Dropout (Max)	0.45V @ 100mA
Quiescent Current	120 µA
Operating Temperature	-40°C to 125°C
Package Type	TO-252-3 (DPAK)
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the LP2950CDT-3.0G is determined by the following critical parameters: fixed 3V output voltage, surface-mount TO-252-3 package compatibility, positive output configuration, and operating temperature range of -40°C to 125°C. All substitute parts listed maintain these core electrical and mechanical specifications. The grouping distinguishes between direct parametric equivalents and similar devices with enhanced current capability.

Direct Parametric Equivalents share identical output current (100mA), quiescent current (120 µA), and maximum input voltage (30V) specifications.

Similar Devices provide higher output current capability (1A) while maintaining the same output voltage, package, and temperature range, suitable for applications requiring additional current headroom.

Parameter Comparison

Parameter	LP2950CDT-3.0G (onsemi)	LP2950CDT-3.0/NOPB (TI)	LP2950CDTX-3.0/NOPB (TI)	BA03CC0FP-E2 (Rohm)
Output Voltage	3V	3V	3V	3V
Output Current	100mA	100mA	100mA	1A
Input Voltage (Max)	30V	30V	30V	25V
Voltage Dropout (Max)	0.45V @ 100mA	0.6V @ 100mA	0.6V @ 100mA	—
Quiescent Current	120 µA	120 µA	120 µA	2.5 mA
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package	TO-252-3 (DPAK)	TO-252-3 (DPAK)	TO-252-3 (DPAK)	TO-252-3 (DPAK)
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

LP2950CDT-3.0/NOPB (Texas Instruments) is the primary parametric equivalent, offering identical electrical specifications to the LP2950CDT-3.0G with active product status. This part is available in Tube packaging and maintains full compatibility with existing designs. Both devices share the same base product number (LP2950) and are ROHS3 compliant.

LP2950CDTX-3.0/NOPB (Texas Instruments) provides an alternative from the same manufacturer with identical electrical performance. This variant is supplied in Tape & Reel packaging and carries MSL-2 moisture sensitivity rating, suitable for automated assembly environments.

BA03CC0FP-E2 (Rohm Semiconductor) functions as a pin-compatible substitute with enhanced current capability (1A versus 100mA). This device is appropriate for applications requiring additional output current margin while maintaining the same 3V output and TO-252-3 package. The maximum input voltage is reduced to 25V, which must be verified against circuit requirements. This part is supplied in Tape & Reel packaging and includes over-voltage protection in addition to over-current and over-temperature protection.

All substitute parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original device.

Frequently Asked Questions (FAQ)

Q: Can LP2950CDT-3.0/NOPB directly replace LP2950CDT-3.0G in existing designs?

A: Yes. Both devices share identical output voltage (3V), output current (100mA), maximum input voltage (30V), quiescent current (120 µA), and operating temperature range (-40°C to 125°C). The TO-252-3 package pinout is identical. The primary difference is product status: the original is obsolete while the substitute is active.

Q: What is the difference between LP2950CDT-3.0/NOPB and LP2950CDTX-3.0/NOPB?

A: Both are Texas Instruments LP2950 variants with identical electrical specifications. The primary differences are packaging format (Tube versus Tape & Reel) and moisture sensitivity level (MSL-2 for the CDTX variant). Select based on assembly process requirements.

Q: When should BA03CC0FP-E2 be selected instead of the LP2950 variants?

A: BA03CC0FP-E2 is suitable when output current requirements exceed 100mA, as it provides 1A capability. However, verify that the maximum input voltage of 25V is compatible with your circuit, as this is lower than the 30V specification of LP2950 devices. Pin compatibility with TO-252-3 package is maintained.

Q: Are all substitute parts RoHS compliant?

A: Yes. LP2950CDT-3.0/NOPB, LP2950CDTX-3.0/NOPB, and BA03CC0FP-E2 are all ROHS3 compliant and REACH unaffected, matching the regulatory status of the original LP2950CDT-3.0G.

Q: What packaging options are available for these substitutes?

A: LP2950CDT-3.0/NOPB is supplied in Tube packaging. LP2950CDTX-3.0/NOPB and BA03CC0FP-E2 are supplied in Tape & Reel format, suitable for high-volume automated assembly.

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