RT9709GQW Equivalent & Substitute Parts

Part Overview

The RT9709GQW is a Battery Protection IC manufactured by Richtek USA Inc., designed for multi-cell battery pack applications. This Surface Mount device in 12-WDFN (4x3) packaging provides comprehensive fault protection including Over Current, Over Temperature, and Over/Under Voltage monitoring. The product is currently classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

RT9709GQW

Richtek USA Inc.In Stock: 3523RT9709GQW Datasheet

Current PartRFQ

BD6041GUL-E2

Rohm SemiconductorIn Stock: 65156BD6041GUL-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT9709GQW is based on the following critical parameters:

Primary Substitution Criteria:

• Function: Battery Protection IC
• Fault Protection Capabilities: Over Current and Over/Under Voltage protection (minimum requirement)
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required for regulatory alignment
• Operating Temperature Range: Compatibility within specified limits

Secondary Considerations:

• Package form factor and pin count differences require PCB layout evaluation
• Moisture Sensitivity Level variations affect storage and handling requirements
• Product Status: Active alternatives ensure long-term availability

The BD6041GUL-E2 qualifies as a functional substitute based on shared Battery Protection function, Over Current/Over/Under Voltage fault protection, Surface Mount technology, and ROHS3 compliance. Package differences (9-VCSP50L1 vs. 12-WDFN) and operating temperature range variation (-35°C ~ 85°C vs. -40°C ~ 85°C) require design verification.

Parameter Comparison

Engineering Selection Recommendations

RT9709GQW Status: Obsolete product with limited future availability. Existing inventory of 3,487 pieces supports near-term production requirements only.

BD6041GUL-E2 Recommendation: Active product status with substantial inventory (65,100 pieces) ensures supply chain continuity. ROHS3 compliance and REACH Unaffected status maintain regulatory alignment. Superior Moisture Sensitivity Level (MSL 1 vs. MSL 3) reduces handling and storage constraints.

Design Considerations: The transition from 12-WDFN to 9-VCSP50L1 packaging requires PCB layout modification and thermal management re-evaluation. The operating temperature minimum of -35°C (versus -40°C) must be assessed against application requirements. Over Temperature protection is not specified for BD6041GUL-E2; applications requiring this function require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can BD6041GUL-E2 directly replace RT9709GQW without PCB modification?

A: No. Package geometry differs significantly (12-WDFN 4x3 versus 9-VCSP50L1 1.6x1.6). PCB footprint redesign is required. Pin mapping and electrical interface must be verified against device datasheets.

Q: What is the impact of the -35°C minimum operating temperature on BD6041GUL-E2?

A: Applications requiring operation below -35°C cannot use BD6041GUL-E2. Verify your system's minimum operating temperature requirement against this specification.

Q: Why does BD6041GUL-E2 not specify Over Temperature protection?

A: The provided specifications indicate Over Current and Over/Under Voltage protection only. Over Temperature protection is not listed for this device. If thermal monitoring is critical, alternative parts must be evaluated.

Q: What does MSL 1 (Unlimited) mean compared to MSL 3 (168 Hours)?

A: MSL 1 allows unlimited shelf life without baking requirements. MSL 3 requires baking after 168 hours of exposure to ambient humidity. BD6041GUL-E2 offers superior storage flexibility.

Q: Are both parts ROHS3 compliant?

A: Yes. Both RT9709GQW and BD6041GUL-E2 are ROHS3 Compliant and REACH Unaffected, maintaining regulatory compliance for EU and similar markets.

Q: What inventory considerations apply to substitution?

A: RT9709GQW has 3,487 pieces available (Obsolete status). BD6041GUL-E2 has 65,100 pieces available (Active status). For production beyond current RT9709GQW inventory, BD6041GUL-E2 ensures supply continuity.