BU45L334G-TL Equivalent & Substitute Parts

Part Overview

The BU45L334G-TL is a voltage supervisor IC from Rohm Semiconductor designed for single-channel voltage monitoring applications. This device functions as a voltage detector with open drain or open collector output, providing active low reset functionality. The part is classified as not for new designs, making identification of equivalent alternatives essential for ongoing production support and design continuity.

Substiute Parts

BU45L334G-TL

Rohm SemiconductorIn Stock: 885BU45L334G-TL Datasheet

Current PartRFQ

BU45K334G-TL

Rohm SemiconductorIn Stock: 3760BU45K334G-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The BU45K334G-TL qualifies as a parametric equivalent to the BU45L334G-TL based on the following critical substitution criteria:

• Single-channel voltage monitoring architecture
• Identical 3.3V voltage threshold specification
• Matching open drain or open collector output configuration
• Identical active low reset function with 240ms minimum timeout
• Identical operating temperature range (-40°C ~ 105°C)
• Identical package specification (TO-236-3, SC-59, SOT-23-3 / 3-SSOP)
• Surface mount mounting type
• Equivalent RoHS3 compliance and MSL rating

Both parts belong to the Rohm Semiconductor supervisor IC family and maintain functional and electrical compatibility within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the BU45L334G-TL and BU45K334G-TL maintain identical electrical and mechanical specifications across all monitored parameters. Selection between these parts should be based on inventory availability and supply chain considerations. The BU45K334G-TL currently maintains higher inventory levels (3750 pcs vs. 839 pcs), which may provide supply continuity advantages for ongoing production requirements.

Both parts carry equivalent compliance certifications including ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings. The identical package specification (3-SSOP / TO-236-3) ensures direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the BU45K334G-TL directly replace the BU45L334G-TL in existing designs?

A: Yes. Both parts share identical electrical specifications including voltage threshold (3.3V), output type (open drain or open collector), reset function (active low with 240ms minimum timeout), and operating temperature range (-40°C ~ 105°C). Package specifications are identical (3-SSOP / TO-236-3, SC-59, SOT-23-3), requiring no PCB modifications.

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

A: No. Both parts maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity level (MSL 3, 168 hours). Regulatory and environmental compliance requirements are equivalent.

Q: What is the primary difference between these supervisor ICs?

A: The parts differ only in their internal series designation (BU45L vs. BU45K) and current inventory availability. All functional, electrical, and mechanical parameters remain identical.

Q: Are both parts suitable for new design applications?

A: Both parts carry "Not For New Designs" product status. For new applications, consultation with Rohm Semiconductor regarding current-generation supervisor IC alternatives is recommended.

Q: What packaging considerations apply to these parts?

A: Both parts utilize surface mount technology in the 3-SSOP package format. Moisture sensitivity level 3 requires storage conditions of 168 hours maximum at specified humidity levels prior to reflow soldering.