BQ29411DCTRG4 Equivalent & Substitute Parts

Part Overview

The BQ29411DCTRG4 is a battery protection integrated circuit manufactured by Texas Instruments, designed for lithium-ion battery packs with 2 to 4 cells. This PMIC (Power Management IC) provides over-voltage fault protection in an 8-LSSOP/8-MSOP surface mount package. The part is currently discontinued at DiGi Electronics, with 708 units available in new original stock. Due to its discontinued status, equivalent and substitute parts from the active Texas Instruments BQ294xx battery protection family are necessary for ongoing production and design continuity.

Substiute Parts

BQ29411DCTRG4

Texas InstrumentsIn Stock: 798BQ29411DCTRG4 Datasheet

Current PartRFQ

BQ294704DSGR

Texas InstrumentsIn Stock: 25497BQ294704DSGR Datasheet

MFR RecommendedRFQ

BQ29410DCT3R

Texas InstrumentsIn Stock: 8039BQ29410DCT3R Datasheet

Parametric EquivalentRFQ

BQ29410DCTT

Texas InstrumentsIn Stock: 1368BQ29410DCTT Datasheet

Parametric EquivalentRFQ

BQ29411DCTT

Texas InstrumentsIn Stock: 1279BQ29411DCTT Datasheet

Parametric EquivalentRFQ

BQ29412DCT3R

Texas InstrumentsIn Stock: 6433BQ29412DCT3R Datasheet

Parametric EquivalentRFQ

BQ29412DCTR

Texas InstrumentsIn Stock: 41570BQ29412DCTR Datasheet

Parametric EquivalentRFQ

BQ29412DCTT

Texas InstrumentsIn Stock: 4583BQ29412DCTT Datasheet

Parametric EquivalentRFQ

BQ29413DCTR

Texas InstrumentsIn Stock: 1379BQ29413DCTR Datasheet

Parametric EquivalentRFQ

BQ29413DCTT

Texas InstrumentsIn Stock: 1056BQ29413DCTT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the BQ29411DCTRG4 is determined by strict alignment of the following parameters:

Primary Substitution Criteria:

• Battery Chemistry: Lithium Ion
• Number of Cells: 2 ~ 4
• Fault Protection: Over Voltage
• Operating Temperature Range: -40°C ~ 110°C (TA)
• Mounting Type: Surface Mount
• Package / Case: 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute Categories:

1. Parametric Equivalents (Same Package SM8): Parts sharing identical electrical specifications and the same 8-LSSOP/8-MSOP package footprint. These include BQ29410DCT3R, BQ29410DCTT, BQ29411DCTT, BQ29412DCT3R, BQ29412DCTR, BQ29412DCTT, BQ29413DCTR, and BQ29413DCTT. All maintain active product status except BQ29413DCTT (Not For New Designs).

2. Manufacturer Recommended Substitute (Package Variant): BQ294704DSGR represents a package variant upgrade to 8-WFDFN Exposed Pad (8-WSON 2x2), offering improved thermal performance while maintaining all core electrical parameters. This part is actively manufactured and widely available.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (Same Package):

Select from the parametric equivalents maintaining the 8-LSSOP/8-MSOP package: BQ29410DCT3R, BQ29410DCTT, BQ29411DCTT, BQ29412DCT3R, BQ29412DCTR, BQ29412DCTT, or BQ29413DCTR. All are ROHS3 compliant with active product status. BQ29412DCTR offers the highest inventory availability (41,550 units) for production volume requirements. Avoid BQ29413DCTT, which carries "Not For New Designs" status.

For Package Upgrade with Enhanced Thermal Performance:

BQ294704DSGR provides a manufacturer-recommended alternative with upgraded 8-WFDFN Exposed Pad packaging. This requires PCB layout modification but offers superior thermal dissipation. The part maintains all core electrical specifications and carries active product status with substantial inventory (25,400 units). ROHS3 compliance and REACH Unaffected status are maintained.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), REACH Unaffected status, and identical ECCN/HTSUS classifications, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BQ29411DCTRG4 be directly replaced with BQ29412DCTR?

A: Yes. Both parts share identical electrical specifications for lithium-ion battery protection (2-4 cells, over-voltage fault protection), operating temperature range (-40°C to 110°C), and package footprint (8-LSSOP/8-MSOP). BQ29412DCTR is actively manufactured with higher inventory availability.

Q: What is the difference between the SM8 package variants (DCT3R, DCTR, DCTT)?

A: All three designations refer to the same 8-LSSOP/8-MSOP (0.110", 2.80mm Width) package. The suffix indicates packaging format: DCT3R and DCTR are tape and reel configurations, while DCTT is also tape and reel. These are interchangeable from a PCB assembly perspective.

Q: Is BQ294704DSGR a direct replacement?

A: BQ294704DSGR is electrically equivalent but uses a different package (8-WFDFN Exposed Pad vs. 8-LSSOP/8-MSOP). PCB layout and footprint modifications are required. This upgrade offers improved thermal performance due to the exposed pad design.

Q: Why is BQ29413DCTT marked "Not For New Designs"?

A: This designation indicates the part is in mature/legacy phase. While functional and available in stock (1,045 units), Texas Instruments recommends using active alternatives for new product designs. BQ29413DCTR (active status) is the preferred variant.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, matching the original BQ29411DCTRG4 certifications.

Q: Which substitute offers the best inventory availability?

A: BQ29412DCTR provides the highest stock level at 41,550 units. For package-variant applications, BQ294704DSGR offers 25,400 units with active product status.