S-8209BAP-I8T1U Equivalent & Substitute Parts

Part Overview

The S-8209BAP-I8T1U is a Battery Multi-Function Controller IC for Lithium Ion/Polymer applications manufactured by ABLIC Inc. This active product operates across the -40°C to 85°C temperature range and is packaged in 8-SMD, Flat Lead configuration. Multi-function battery controllers are essential in portable power systems where integrated management of charging, protection, and cell balancing functions reduces component count and design complexity. Substitute parts are identified to provide design flexibility, alternative sourcing options, and compatibility with different manufacturing workflows.

Substiute Parts

S-8209BAP-I8T1U

ABLIC Inc.In Stock: 744S-8209BAP-I8T1U Datasheet

Current PartRFQ

BQ29729DSER

Texas InstrumentsIn Stock: 6433BQ29729DSER Datasheet

SimilarRFQ

BQ29733DSET

Texas InstrumentsIn Stock: 6080BQ29733DSET Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S-8209BAP-I8T1U are identified based on the following critical parameters that determine functional compatibility:

• Battery Chemistry: Lithium Ion/Polymer support
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount
• Product Status: Active
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The identified substitutes (BQ29729DSER and BQ29733DSET) share the same battery chemistry, operating temperature range, mounting type, and compliance certifications. While the substitute parts function as Battery Protection ICs rather than multi-function controllers, they operate within the same thermal and regulatory framework, enabling their use in applications where dedicated protection functionality is required alongside external multi-function management circuitry.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status with ROHS3 compliance and REACH unaffected designation, ensuring regulatory alignment with the primary part. The S-8209BAP-I8T1U, BQ29729DSER, and BQ29733DSET operate within identical thermal specifications (-40°C ~ 85°C), supporting deployment across equivalent environmental conditions. Surface mount packaging and MSL 1 rating provide consistent manufacturing and storage requirements across all three components.

Selection between the primary part and substitutes should be based on functional requirements: the S-8209BAP-I8T1U provides integrated multi-function control, while BQ29729DSER and BQ29733DSET provide dedicated battery protection functionality. The choice between BQ29729DSER (Cut Tape & Digi-Reel packaging) and BQ29733DSET (Tape & Reel packaging) depends on procurement and assembly workflow preferences.

Frequently Asked Questions (FAQ)

Q: Can BQ29729DSER or BQ29733DSET directly replace the S-8209BAP-I8T1U in existing designs?

A: Direct replacement requires design evaluation. The S-8209BAP-I8T1U functions as a multi-function controller, while BQ29729DSER and BQ29733DSET provide battery protection only. Substitution is viable only if external multi-function management circuitry is available or if protection-only functionality meets application requirements.

Q: What are the key differences between BQ29729DSER and BQ29733DSET?

A: Both parts share identical electrical specifications and thermal ratings. The primary difference is packaging format: BQ29729DSER is supplied in Cut Tape & Digi-Reel format, while BQ29733DSET is supplied in Tape & Reel format. Selection depends on procurement volume and assembly line compatibility.

Q: Are all three parts suitable for the same operating temperature range?

A: Yes. The S-8209BAP-I8T1U, BQ29729DSER, and BQ29733DSET all operate across -40°C to 85°C (TA), enabling deployment in equivalent thermal environments.

Q: Do all parts meet the same regulatory requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent regulatory and manufacturing compliance.

Q: What is the significance of the package differences between these parts?

A: The S-8209BAP-I8T1U uses 8-SMD, Flat Lead packaging (SNT-8A), while BQ29729DSER and BQ29733DSET use 6-WFDFN packaging (6-WSON 1.5x1.5). Package differences affect PCB layout, footprint design, and assembly compatibility. Substitution requires PCB redesign to accommodate the different package geometry.