BA18BC0FP-E2 Equivalent & Substitute Parts

Part Overview

The BA18BC0FP-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed to deliver a fixed 1.8V output at 1A current capacity. This positive fixed output regulator operates across an input voltage range up to 16V and includes integrated over-current and over-temperature protection. The device is housed in a TO-252-3 (DPAK) surface mount package and maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility requires alternative packaging or performance characteristics while maintaining functional compatibility.

Substiute Parts

BA18BC0FP-E2

Rohm SemiconductorIn Stock: 36377BA18BC0FP-E2 Datasheet

Current PartRFQ

LF18ABDT-TR

STMicroelectronicsIn Stock: 10140LF18ABDT-TR Datasheet

SimilarRFQ

LF18CDT-TR

STMicroelectronicsIn Stock: 105197LF18CDT-TR Datasheet

SimilarRFQ

LP38691DT-1.8/NOPB

National SemiconductorIn Stock: 776LP38691DT-1.8/NOPB Datasheet

SimilarRFQ

LP38691DTX-1.8/NOPB

National SemiconductorIn Stock: 1370LP38691DTX-1.8/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Output Voltage: Must be fixed at 1.8V
• Output Configuration: Must be positive fixed output
• Package Type: Must be TO-252-3 (DPAK) surface mount
• Protection Features: Must include over-current and over-temperature protection
• Compliance: Must maintain RoHS3 compliance

The substitute parts listed below meet these core requirements. However, output current capacity varies among substitutes. The BA18BC0FP-E2 delivers 1A, while STMicroelectronics parts (LF18ABDT-TR and LF18CDT-TR) deliver 500mA, and National Semiconductor parts (LP38691DT-1.8/NOPB and LP38691DTX-1.8/NOPB) also deliver 500mA. Input voltage maximum ratings differ: BA18BC0FP-E2 and STMicroelectronics parts support 16V, while National Semiconductor parts support 10V maximum.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and are available in the same TO-252-3 (DPAK) package footprint, ensuring mechanical compatibility with existing PCB designs.

STMicroelectronics LF18ABDT-TR and LF18CDT-TR: These parts are direct functional equivalents for applications requiring 500mA or less output current. Both support the full 16V input voltage range and include over-current protection. LF18CDT-TR offers significantly higher inventory availability (105,100 pcs) compared to LF18ABDT-TR (10,100 pcs). Both maintain RoHS3 compliance and extended operating temperature range (-40°C ~ 125°C).

National Semiconductor LP38691DT-1.8/NOPB and LP38691DTX-1.8/NOPB: These parts are suitable for applications requiring 500mA or less output current and input voltages not exceeding 10V. The primary advantage is substantially lower quiescent current (55 µA versus 0.5-1 mA), beneficial for battery-powered or low-power standby applications. Over-current protection is not specified for these parts. LP38691DTX-1.8/NOPB offers higher inventory (1,360 pcs) than LP38691DT-1.8/NOPB (677 pcs).

Applications requiring the full 1A output current of the BA18BC0FP-E2 cannot use the 500mA-rated substitutes without thermal and reliability concerns.

Frequently Asked Questions (FAQ)

Q: Can LF18ABDT-TR or LF18CDT-TR replace BA18BC0FP-E2 in all applications?

A: These STMicroelectronics parts are compatible only for applications requiring 500mA output current or less. If your circuit draws the full 1A capacity of the BA18BC0FP-E2, these substitutes are not suitable. Both parts share identical output voltage (1.8V), package type (TO-252-3), and protection features (over-current and over-temperature).

Q: What is the difference between LF18ABDT-TR and LF18CDT-TR?

A: Both parts are electrically identical with the same electrical specifications. The primary difference is packaging format: LF18ABDT-TR is supplied in Cut Tape (CT) & Digi-Reel format with 10,100 pcs inventory, while LF18CDT-TR is also supplied in Cut Tape & Digi-Reel format with significantly higher inventory of 105,100 pcs. Selection should be based on procurement volume and lead time requirements.

Q: Can National Semiconductor LP38691 parts be used if input voltage exceeds 10V?

A: No. The LP38691DT-1.8/NOPB and LP38691DTX-1.8/NOPB are rated for maximum input voltage of 10V, while the BA18BC0FP-E2 supports 16V. Using these parts in circuits with input voltages between 10V and 16V will exceed device ratings and cause failure.

Q: What is the difference between LP38691DT-1.8/NOPB and LP38691DTX-1.8/NOPB?

A: These parts are electrically identical. The difference is packaging: LP38691DT-1.8/NOPB is supplied in standard packaging, while LP38691DTX-1.8/NOPB is supplied in Bulk packaging. Inventory availability differs: LP38691DTX-1.8/NOPB has 1,360 pcs versus 677 pcs for LP38691DT-1.8/NOPB.

Q: Do all substitute parts include over-current protection?

A: No. STMicroelectronics parts (LF18ABDT-TR and LF18CDT-TR) include both over-current and over-temperature protection. National Semiconductor parts (LP38691DT-1.8/NOPB and LP38691DTX-1.8/NOPB) include only over-temperature protection. If over-current protection is required for your application, use STMicroelectronics substitutes.

Q: Are all parts RoHS3 compliant?

A: STMicroelectronics parts (LF18ABDT-TR and LF18CDT-TR) are confirmed RoHS3 compliant. RoHS compliance status is not specified for National Semiconductor parts in the available data.