BU2FSA4WGWL-E2 Equivalent & Substitute Parts

Part Overview

The BU2FSA4WGWL-E2 is a linear voltage regulator IC manufactured by ROHM Semiconductor, designed for positive fixed output regulation at 2.55V with 200mA output current capability. This device is classified as a Power Management PMIC and features a compact 4-UFBGA UCSP50L1 package for surface mount applications.

The BU2FSA4WGWL-E2 carries a "Not For New Designs" product status, indicating that ROHM Semiconductor has discontinued active development and support for this component. Organizations requiring this functionality for new or ongoing production must identify equivalent alternatives that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

BU2FSA4WGWL-E2

ROHM SemiconductorIn Stock: 1057BU2FSA4WGWL-E2 Datasheet

Current PartRFQ

BU2FSA4WGWL-E2

ROHM SemiconductorIn Stock: 1057BU2FSA4WGWL-E2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BU2FSA4WGWL-E2 requires strict alignment across the following critical parameters:

Electrical Parameters:

• Output voltage: 2.55V fixed
• Maximum input voltage: 5.5V
• Output current capability: 200mA minimum
• Voltage dropout: 0.15V @ 100mA maximum
• Quiescent current: 80 µA maximum
• PSRR: 70dB ~ 45dB (1kHz ~ 100kHz)
• Control features: Enable function required
• Protection: Over Current and Over Temperature protection required

Mechanical Parameters:

• Package type: 4-UFBGA or CSPBGA
• Supplier device package: UCSP50L1
• Mounting type: Surface Mount

Compliance Parameters:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Parameter Comparison

Engineering Selection Recommendations

The BU2FSA4WGWL-E2 is designated as "Not For New Designs" by ROHM Semiconductor. This status indicates the component is in end-of-life phase with no active development or long-term supply guarantees.

For applications currently using the BU2FSA4WGWL-E2, component selection must prioritize:

Compliance Verification: All substitute parts must maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating to ensure compatibility with existing manufacturing and storage protocols.

Electrical Equivalence: Substitute components must deliver identical output voltage (2.55V), input voltage rating (5.5V maximum), output current (200mA), and dropout voltage (0.15V @ 100mA) specifications. PSRR performance, quiescent current, and protection features must match or exceed the original specification.

Package Compatibility: The 4-UFBGA UCSP50L1 package footprint is mandatory for direct board-level substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the BU2FSA4WGWL-E2 be replaced with a different output voltage variant?

A: No. The fixed 2.55V output voltage is a core specification. Only parts with identical 2.55V output voltage meet substitution criteria. Different voltage variants are not compatible.

Q: What does "Not For New Designs" status mean for component sourcing?

A: This designation indicates ROHM Semiconductor has discontinued active support and development for this part. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. New designs should evaluate alternative components with active product status.

Q: Is the UCSP50L1 package interchangeable with other BGA packages?

A: No. The UCSP50L1 package is a specific ball grid array configuration. PCB footprints are designed for this exact package type. Alternative packages require PCB redesign and re-qualification.

Q: Are there any compliance considerations when substituting this part?

A: Yes. All substitute parts must maintain ROHS3 compliance and MSL Level 1 (Unlimited) rating. Compliance documentation must be verified with the component supplier before integration into production.

Q: What electrical parameters are non-negotiable for substitution?

A: Output voltage (2.55V), maximum input voltage (5.5V), output current (200mA), and dropout voltage (0.15V @ 100mA) are fixed specifications. Quiescent current, PSRR, and protection features must meet or exceed the original values.