BU2090 Equivalent & Substitute Parts

Part Overview

The BU2090 is a 1/0 Driver IC manufactured by Rohm Semiconductor in a 16-DIP through-hole package. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The BU2090 operates across a supply voltage range of 2.7V to 5.5V and maintains an operating temperature range of -25°C to 75°C, making it suitable for standard industrial and consumer applications requiring driver functionality.

Substiute Parts

BU2090

Rohm SemiconductorIn Stock: 2710BU2090 Datasheet

Current PartRFQ

BU2090F-E2

Rohm SemiconductorIn Stock: 3965BU2090F-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BU2090 is determined by strict equivalence across the following critical parameters:

• Functional Equivalence: Number of Drivers/Receivers (1/0)
• Electrical Compatibility: Voltage supply range (2.7V ~ 5.5V) and operating temperature range (-25°C ~ 75°C)
• Base Product Number: Both parts share the BU2090 base product number, confirming functional identity
• Regulatory Compliance: RoHS3 compliance, REACH status, and MSL rating must remain consistent

The BU2090F-E2 qualifies as a direct substitute based on these parameters. The primary difference is the package format: the BU2090F-E2 uses a 16-SOP surface-mount package instead of the through-hole 16-DIP configuration of the original part. This packaging difference does not affect electrical or functional performance when appropriate PCB layout and assembly methods are employed.

Parameter Comparison

Engineering Selection Recommendations

The BU2090F-E2 is the qualified substitute for the obsolete BU2090. Selection between these parts depends on PCB design constraints:

Through-Hole Requirement: If the existing PCB design mandates through-hole mounting, the BU2090 remains the only option. However, given its obsolete status, design migration to surface-mount technology using the BU2090F-E2 is recommended for long-term supply chain stability.

Surface-Mount Design: The BU2090F-E2 is the preferred choice for new designs or PCB revisions. It maintains active product status with Rohm Semiconductor, ensuring continued availability and supply chain reliability. The smaller 16-SOIC package reduces PCB footprint and supports modern manufacturing processes.

Compliance Assurance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and consumer applications. MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can the BU2090F-E2 directly replace the BU2090 on existing PCBs?

A: Direct PCB replacement is not possible due to different mounting technologies. The BU2090 uses through-hole mounting (16-DIP), while the BU2090F-E2 uses surface-mount technology (16-SOIC). PCB redesign is required to accommodate the BU2090F-E2.

Q: Are the electrical specifications identical between BU2090 and BU2090F-E2?

A: Yes. Both parts share identical supply voltage range (2.7V ~ 5.5V), operating temperature range (-25°C ~ 75°C), and functional driver configuration (1/0). Electrical performance is equivalent.

Q: Why is the BU2090 listed as obsolete?

A: The BU2090 is obsolete due to market transition toward surface-mount technology. The BU2090F-E2 represents the active product line continuation from Rohm Semiconductor.

Q: What are the package dimension differences?

A: The BU2090 uses a 16-DIP package with 0.300" (7.62mm) pitch for through-hole insertion. The BU2090F-E2 uses a 16-SOIC package with 0.173" (4.40mm) width for surface mounting. The SOIC package is significantly smaller, reducing PCB area requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the BU2090 and BU2090F-E2 are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards for industrial applications.

Q: What is the MSL rating, and does it affect handling?

A: Both parts have MSL rating 1 (Unlimited), indicating no moisture sensitivity. Standard handling and storage procedures apply without special moisture control requirements.