BD49L49G-TL Equivalent & Substitute Parts

Part Overview

The BD49L49G-TL is a voltage supervisor IC from Rohm Semiconductor designed for single-channel voltage monitoring applications. This component functions as a voltage detector with push-pull totem pole output and active low reset capability. The BD49L49G-TL is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity.

Substiute Parts

BD49L49G-TL

Rohm SemiconductorIn Stock: 1118BD49L49G-TL Datasheet

Current PartRFQ

BD49E49G-TR

Rohm SemiconductorIn Stock: 789BD49E49G-TR Datasheet

MFR RecommendedRFQ

BD49K49G-TL

Rohm SemiconductorIn Stock: 3765BD49K49G-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BD49L49G-TL are identified based on the following critical parameters that determine functional compatibility:

• Single-channel voltage monitoring capability
• 4.9V voltage threshold setting
• Push-pull totem pole output configuration
• Active low reset logic
• Operating temperature range of -40°C to 105°C
• Surface mount technology
• RoHS3 compliance and REACH unaffected status

Two substitute parts are identified: BD49E49G-TR (MFR Recommended) and BD49K49G-TL (Parametric Equivalent). Both maintain the core electrical specifications and compliance requirements of the original part. The primary distinction between substitutes relates to product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

BD49E49G-TR (MFR Recommended Substitute): This part is the manufacturer-recommended alternative and carries Active product status, ensuring ongoing support and availability. It maintains all critical electrical parameters including the 4.9V threshold, push-pull totem pole output, and active low reset configuration. The primary design consideration is the package change from 3-SSOP to 5-SSOP, which requires PCB layout modification. This substitute is suitable for new designs and ongoing production requiring long-term component availability.

BD49K49G-TL (Parametric Equivalent): This part provides functional equivalence with identical package format (3-SSOP) to the original BD49L49G-TL, minimizing PCB redesign requirements. It maintains RoHS3 compliance and REACH unaffected status. However, its Not For New Designs status indicates limited future support. This substitute is appropriate for legacy system maintenance and repair applications where package compatibility is critical.

Frequently Asked Questions (FAQ)

Q: Can BD49E49G-TR be used as a direct replacement for BD49L49G-TL without PCB modifications?

A: No. While BD49E49G-TR maintains all electrical specifications, the package format differs (5-SSOP versus 3-SSOP). PCB layout modification is required to accommodate the different pin configuration and physical dimensions.

Q: What is the primary advantage of BD49K49G-TL over BD49E49G-TR?

A: BD49K49G-TL uses the identical 3-SSOP package format as the original BD49L49G-TL, eliminating the need for PCB redesign. This makes it suitable for direct replacement in existing designs where package compatibility is essential.

Q: Are both substitute parts RoHS3 compliant?

A: BD49K49G-TL is confirmed RoHS3 compliant. RoHS compliance status for BD49E49G-TR is not specified in the provided data.

Q: Which substitute should be selected for new product designs?

A: BD49E49G-TR is the manufacturer-recommended substitute with Active product status, making it the appropriate choice for new designs requiring long-term component availability and support.

Q: Do the substitute parts maintain the same voltage threshold and output characteristics?

A: Yes. Both BD49E49G-TR and BD49K49G-TL maintain the 4.9V voltage threshold, push-pull totem pole output configuration, and active low reset logic of the original BD49L49G-TL.