Infineon 98-0268 Power Switch N-Channel Equivalent & Substitute Parts

Part Overview

The Infineon 98-0268 is a power management integrated circuit (PMIC) functioning as an N-channel power switch/driver with 1:1 configuration in D2PAK surface mount packaging. This component is designed for high-side switching applications with a maximum output current of 23A and load voltage range of 6V to 28V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

98-0268

Infineon TechnologiesIn Stock: 1035898-0268 Datasheet

Current PartRFQ

BTS441RGATMA1

Infineon TechnologiesIn Stock: 7487BTS441RGATMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Infineon 98-0268 is determined by the following critical parameters:

• Output Configuration & Type: High-side N-channel switching topology
• Ratio Configuration: 1:1 input-to-output ratio
• Interface Type: On/Off control (non-inverting input)
• Package Compatibility: TO-263-5 / D2PAK surface mount form factor
• Thermal Operating Range: -40°C to 150°C junction temperature
• Load Voltage Range: Minimum 6V to 28V compatibility
• Current Handling: Output current capability of 23A or greater
• On-Resistance: Rds On specification of 5.5mOhm or lower

The BTS441RGATMA1 qualifies as a substitute based on matching these core electrical and mechanical parameters, with the exception of reduced maximum output current (17A versus 23A) and increased on-resistance (15mOhm versus 5.5mOhm). This substitution is valid only for applications where the lower current rating and higher on-resistance are acceptable within the design margin.

Parameter Comparison

Engineering Selection Recommendations

The BTS441RGATMA1 serves as the primary substitute for the obsolete Infineon 98-0268 based on the following engineering criteria:

Product Status & Availability: The 98-0268 is classified as obsolete, whereas the BTS441RGATMA1 maintains active manufacturing status with documented inventory availability. This ensures long-term supply chain continuity and access to technical support.

Regulatory Compliance: The BTS441RGATMA1 is ROHS3 compliant, meeting current environmental and regulatory requirements. The original 98-0268 is RoHS non-compliant, making the substitute preferable for new designs and compliance-sensitive applications.

Electrical Performance Trade-offs: The BTS441RGATMA1 exhibits reduced maximum output current (17A versus 23A) and increased on-resistance (15mOhm versus 5.5mOhm). These parameters must be evaluated against application requirements. The substitute is suitable for applications where the 17A current rating and associated thermal dissipation are within acceptable design margins.

Enhanced Protection Features: The BTS441RGATMA1 incorporates additional fault protection mechanisms including open load detection and over-voltage protection, compared to the adjustable current limiting and over-temperature protection of the 98-0268. These enhancements provide improved system reliability.

Package Compatibility: Both components utilize identical TO-263-5 / D2PAK surface mount packaging, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the BTS441RGATMA1 directly replace the 98-0268 without PCB modifications?

A: Yes, the BTS441RGATMA1 is pin-compatible with the 98-0268 in TO-263-5 / D2PAK packaging. No PCB layout changes are required. However, circuit validation is necessary to confirm that the reduced current rating (17A) and increased on-resistance (15mOhm) are acceptable for your specific application.

Q: What is the impact of the higher on-resistance (15mOhm vs. 5.5mOhm) on thermal performance?

A: The increased on-resistance results in higher power dissipation during switching operation. Thermal analysis must be performed to ensure the junction temperature remains within the -40°C to 150°C operating range under worst-case load conditions. Thermal management solutions such as increased copper area or heat sinking may be required.

Q: Is the BTS441RGATMA1 suitable for applications requiring 23A continuous current?

A: No. The BTS441RGATMA1 is rated for a maximum output current of 17A. Applications requiring 23A continuous current cannot use this substitute without exceeding the component's electrical ratings. Alternative components with higher current ratings must be evaluated.

Q: What are the differences in fault protection between the two parts?

A: The 98-0268 provides adjustable current limiting and over-temperature protection. The BTS441RGATMA1 provides fixed current limiting, open load detection, over-temperature protection, and over-voltage protection. The BTS441RGATMA1 offers enhanced protection coverage, which may improve system reliability in fault conditions.

Q: Does the BTS441RGATMA1 meet current regulatory requirements?

A: Yes. The BTS441RGATMA1 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The 98-0268 is RoHS non-compliant, making the substitute preferable for applications subject to regulatory compliance requirements.

Q: Are there any differences in the load voltage operating range?

A: The BTS441RGATMA1 supports a wider load voltage range (4.75V to 43V) compared to the 98-0268 (6V to 28V). This expanded range provides greater design flexibility and is fully compatible with the original part's voltage specifications.

Q: What is the moisture sensitivity level for the BTS441RGATMA1?

A: Both the 98-0268 and BTS441RGATMA1 are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.