BD49L44G-TL Equivalent & Substitute Parts

Part Overview

The BD49L44G-TL is a voltage supervisor IC from Rohm Semiconductor's BD49Lxx series, designed for single-channel voltage monitoring applications. This component functions as a voltage detector with push-pull totem pole output configuration and active-low reset functionality. The BD49L44G-TL is classified as not for new designs, making identification of suitable alternatives essential for ongoing production and maintenance applications. The part operates across an industrial temperature range of -40°C to 105°C and is housed in a compact 3-SSOP surface mount package.

Substiute Parts

BD49L44G-TL

Rohm SemiconductorIn Stock: 3749BD49L44G-TL Datasheet

Current PartRFQ

BD49K44G-TL

Rohm SemiconductorIn Stock: 1083BD49K44G-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BD49L44G-TL is determined by strict alignment of the following critical parameters:

• Voltage threshold: 4.4V
• Output type: Push-Pull, Totem Pole configuration
• Reset polarity: Active Low
• Number of monitored channels: 1
• Package type: 3-SSOP (TO-236-3, SC-59, SOT-23-3)
• Operating temperature range: -40°C ~ 105°C minimum
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

The BD49K44G-TL qualifies as a parametric equivalent substitute because it maintains identical electrical specifications and mechanical compatibility across all critical parameters. The primary distinction lies in product lifecycle status: the BD49L44G-TL belongs to the BD49Lxx series (not for new designs), while the BD49K44G-TL belongs to the BD49Kxx series (active product status).

Parameter Comparison

Engineering Selection Recommendations

The BD49K44G-TL serves as the direct parametric equivalent for the BD49L44G-TL. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The BD49K44G-TL is classified as an active product, whereas the BD49L44G-TL is designated not for new designs. For applications requiring ongoing component procurement or design refresh cycles, the BD49K44G-TL is the appropriate selection. Both parts maintain identical electrical performance and mechanical compatibility, ensuring direct substitution without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the BD49K44G-TL replace the BD49L44G-TL in existing designs?

A: Yes. The BD49K44G-TL is a parametric equivalent with identical voltage threshold (4.4V), output configuration (push-pull totem pole), reset polarity (active low), package type (3-SSOP), and operating temperature range (-40°C to 105°C). Direct substitution is possible without circuit modification.

Q: What is the primary difference between these two parts?

A: The BD49L44G-TL belongs to the BD49Lxx series and carries a "not for new designs" status. The BD49K44G-TL belongs to the BD49Kxx series and maintains active product status. Electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level (MSL 3, 168 hours) and packaging specifications are identical.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both components use the same 3-SSOP surface mount package (TO-236-3, SC-59, SOT-23-3). No footprint or layout changes are required for substitution.

Q: Why would I choose the BD49K44G-TL over the BD49L44G-TL?

A: The BD49K44G-TL is the recommended choice for new procurement due to its active product status. The BD49L44G-TL should be reserved for legacy system maintenance where existing inventory is available.