BA178M15FP-E2 Equivalent & Substitute Parts

Part Overview

The BA178M15FP-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed to deliver a fixed positive 15V output at 500mA. This surface-mount component operates across the industrial temperature range of -40°C to 85°C and is packaged in TO-252-3 (DPAK) configuration. The device is Active in product status and fully RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 15V linear regulation at 500mA output capacity.

Substiute Parts

BA178M15FP-E2

Rohm SemiconductorIn Stock: 17074BA178M15FP-E2 Datasheet

Current PartRFQ

L78M15ABDT-TR

STMicroelectronicsIn Stock: 17568L78M15ABDT-TR Datasheet

DirectRFQ

L78M15CDT-TR

STMicroelectronicsIn Stock: 95110L78M15CDT-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BA178M15FP-E2 are qualified based on the following critical parameters that determine functional equivalence:

• Fixed output voltage of 15V
• Output current capability of 500mA minimum
• Identical package configuration: TO-252-3 DPAK (2 Leads + Tab)
• Surface-mount technology compatibility
• Positive output configuration with single regulator
• RoHS3 compliance and REACH unaffected status
• Active product status

The identified substitutes (L78M15ABDT-TR and L78M15CDT-TR) from STMicroelectronics meet all core electrical and mechanical requirements. Both devices maintain the 15V fixed output and 500mA current rating in the same DPAK package, enabling direct board-level replacement without layout modification.

Parameter Comparison

Engineering Selection Recommendations

Both L78M15ABDT-TR and L78M15CDT-TR are qualified substitutes for the BA178M15FP-E2 based on electrical and mechanical compatibility. All three devices are Active in product status and ROHS3 compliant.

L78M15ABDT-TR supports the extended operating temperature range of -40°C to 125°C, matching the lower temperature limit of the BA178M15FP-E2 while extending the upper limit. This device is suitable for applications requiring broader thermal operation.

L78M15CDT-TR operates across 0°C to 125°C, with higher inventory availability (95,100 pcs). This variant is appropriate for applications where the 0°C minimum temperature threshold is acceptable.

Both STMicroelectronics substitutes feature integrated protection against over-current, over-temperature, and short-circuit conditions, providing enhanced reliability compared to the BA178M15FP-E2. The STMicroelectronics devices also accept higher maximum input voltage (35V vs. 30V), offering greater design margin in input supply applications.

Frequently Asked Questions (FAQ)

Q: Can L78M15ABDT-TR and L78M15CDT-TR be used interchangeably with BA178M15FP-E2?

A: Yes, both STMicroelectronics parts are direct substitutes at the board level. All three devices share identical output voltage (15V), output current (500mA), and package configuration (TO-252-3 DPAK). No PCB layout changes are required.

Q: What is the difference between L78M15ABDT-TR and L78M15CDT-TR?

A: The primary difference is operating temperature range. L78M15ABDT-TR operates from -40°C to 125°C, while L78M15CDT-TR operates from 0°C to 125°C. Select based on your application's minimum operating temperature requirement.

Q: Are the substitute parts pin-compatible with the BA178M15FP-E2?

A: Yes. All three devices use the TO-252-3 DPAK package with identical pin configuration: 2 leads plus tab. Direct PCB substitution is possible without rework.

Q: Do the substitute parts offer any advantages over the BA178M15FP-E2?

A: The STMicroelectronics substitutes include integrated protection features (over-current, over-temperature, short-circuit) and accept higher maximum input voltage (35V vs. 30V). Both are ROHS3 compliant and REACH unaffected, matching the BA178M15FP-E2 compliance profile.

Q: What packaging formats are available for the substitute parts?

A: L78M15ABDT-TR is supplied in Cut Tape (CT) & Digi-Reel® format. L78M15CDT-TR is also supplied in Cut Tape (CT) & Digi-Reel® format. The BA178M15FP-E2 is supplied in Tape & Reel (TR) format. All are surface-mount compatible.

Q: Are there any thermal or performance considerations when substituting?

A: The substitute parts have slightly lower PSRR (54dB vs. 60dB at 120Hz) and higher quiescent current (6mA vs. 4.5mA). For noise-sensitive or ultra-low-power applications, verify these parameters against your design specifications.