BD49L51G-TL Equivalent & Substitute Parts

Part Overview

The BD49L51G-TL is a voltage supervisor IC from Rohm Semiconductor designed for single-channel voltage monitoring applications. It functions as a voltage detector with push-pull, totem pole output configuration and active-low reset functionality. The device is classified as not for new designs, indicating its legacy status in the product portfolio. Finding equivalent substitute parts is necessary for applications requiring continued supply, design flexibility, or inventory optimization while maintaining identical electrical and mechanical specifications.

Substiute Parts

BD49L51G-TL

Rohm SemiconductorIn Stock: 3869BD49L51G-TL Datasheet

Current PartRFQ

BD49K51G-TL

Rohm SemiconductorIn Stock: 3321BD49K51G-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BD49L51G-TL are determined by strict equivalence across the following critical parameters:

• Voltage threshold: 5.1V
• Output configuration: Push-Pull, Totem Pole
• 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
• Mounting type: Surface Mount
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

The BD49K51G-TL meets all these criteria and is classified as a parametric equivalent. Both parts belong to the Rohm Semiconductor supervisor IC family and share identical electrical specifications and mechanical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the BD49L51G-TL and BD49K51G-TL are classified as not for new designs. Selection between these parts should be based on inventory availability and supply chain considerations rather than performance differentiation, as they are electrically and mechanically identical.

The BD49K51G-TL currently maintains higher inventory availability (3290 pcs) compared to the BD49L51G-TL (3797 pcs), though both are in stock. Both parts maintain full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can BD49K51G-TL be used as a direct replacement for BD49L51G-TL?

A: Yes. Both parts are parametric equivalents with identical voltage threshold (5.1V), output configuration (push-pull, totem pole), reset polarity (active low), package type (3-SSOP), and operating temperature range (-40°C ~ 105°C). No circuit modifications are required.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 hours). Regulatory and environmental compliance is equivalent.

Q: What is the significance of the series designation (BD49Lxx vs. BD49Kxx)?

A: The series designation indicates internal product line classification within Rohm Semiconductor's supervisor IC family. The different series letters do not reflect electrical or mechanical differences for these specific part numbers; both maintain identical specifications for voltage monitoring, output drive capability, and package configuration.

Q: Are both parts suitable for new designs?

A: Both parts carry a product status of "not for new designs." This designation indicates legacy status. New designs should evaluate current-generation supervisor ICs from Rohm Semiconductor or alternative manufacturers for enhanced features or improved availability.

Q: What are the package handling requirements?

A: Both parts are surface mount devices in 3-SSOP packaging with MSL 3 rating (168 hours). Standard moisture control procedures for MSL 3 components apply to both parts during storage and assembly.