BA7810CP-E2 Equivalent & Substitute Parts

Part Overview

The BA7810CP-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed to provide a fixed positive 10V output at 1A current capacity in a TO-220CP-3 package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity. The BA7810CP-E2 serves applications requiring stable 10V regulation with through-hole mounting in legacy and current production environments.

Key Parameters

Parameter	BA7810CP-E2
Manufacturer	Rohm Semiconductor
Output Voltage (Fixed)	10V
Output Current	1A
Input Voltage (Max)	25V
Voltage Dropout (Max)	2V @ 1A
Quiescent Current	8 mA
Operating Temperature Range	-40°C to 85°C
Package Type	TO-220-3 Cropped Leads
Protection Features	Over Current, Over Temperature
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BA7810CP-E2 is determined by the following critical parameters:

Fixed output voltage of 10V
Output current capability of 1A minimum
Through-hole mounting configuration
TO-220 package family compatibility
Input voltage rating of 25V or higher
Operating temperature range support of -40°C minimum and 85°C maximum
Over current and over temperature protection

The LM2940T-10.0/NOPB from Texas Instruments meets all substitution criteria. Both devices provide identical fixed 10V output, 1A current capacity, and through-hole TO-220 mounting. The substitute part exceeds the original specifications in input voltage rating (26V vs 25V), dropout voltage performance (1V vs 2V), and operating temperature range (-40°C to 125°C vs -40°C to 85°C), while maintaining full functional compatibility.

Parameter Comparison

Parameter	BA7810CP-E2	LM2940T-10.0/NOPB	Compatibility
Output Voltage (Fixed)	10V	10V	Identical
Output Current	1A	1A	Identical
Input Voltage (Max)	25V	26V	Substitute exceeds
Voltage Dropout (Max)	2V @ 1A	1V @ 1A	Substitute superior
Quiescent Current	8 mA	10 mA	Substitute slightly higher
Operating Temperature (Min)	-40°C	-40°C	Identical
Operating Temperature (Max)	85°C	125°C	Substitute exceeds
Package Type	TO-220-3 Cropped Leads	TO-220-3	Compatible
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature, Reverse Polarity, Short Circuit	Substitute includes additional protection
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Product Status	Obsolete	Active	Substitute actively supported

Engineering Selection Recommendations

The LM2940T-10.0/NOPB is the primary substitute for the obsolete BA7810CP-E2. Selection is justified by:

Functional equivalence in output voltage (10V fixed) and current rating (1A)
Full compatibility with TO-220-3 through-hole mounting
Superior electrical performance in dropout voltage and operating temperature range
Enhanced protection features including reverse polarity and short circuit protection
Active product status with ongoing manufacturer support and availability
ROHS3 compliance matching the original device
Identical compliance certifications (REACH Unaffected, EAR99 classification)

The substitute part is suitable for direct replacement in existing designs and new production applications requiring 10V linear regulation at 1A output.

Frequently Asked Questions (FAQ)

Q: Can the LM2940T-10.0/NOPB directly replace the BA7810CP-E2 in existing PCB designs?

A: Yes. Both devices use the TO-220-3 package with identical pin configuration and electrical characteristics for the 10V fixed output and 1A current rating. PCB layout and circuit connections require no modification.

Q: What is the significance of the cropped leads designation on the BA7810CP-E2?

A: The cropped leads variant (TO-220CP-3) is a mechanical packaging option that reduces lead length. The LM2940T-10.0/NOPB in standard TO-220-3 package is mechanically compatible and functionally equivalent. Verify mounting hole spacing and lead length requirements for your specific application.

Q: Why is the BA7810CP-E2 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The LM2940T-10.0/NOPB, with active product status, provides continued availability and manufacturer support for equivalent functionality.

Q: Are there differences in quiescent current between these devices?

A: The LM2940T-10.0/NOPB draws 10 mA quiescent current compared to 8 mA for the BA7810CP-E2. This 2 mA difference is negligible in most applications and does not affect functional compatibility.

Q: What additional protection does the LM2940T-10.0/NOPB provide?

A: The substitute includes reverse polarity and short circuit protection in addition to the over current and over temperature protection present in the original device. These features enhance circuit robustness without affecting pin compatibility or normal operation.

Q: Are both devices RoHS compliant?

A: Yes. Both the BA7810CP-E2 and LM2940T-10.0/NOPB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

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