BTS736L2 Equivalent & Substitute Parts

Part Overview

The BTS736L2 is a Power Switch/Driver IC from Infineon Technologies' PROFET® series, designed for high-side N-channel switching applications. This component operates as a 1:1 power switch with integrated fault protection, supporting load voltages from 4.75V to 43V and delivering up to 4.4A output current. The device is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

BTS736L2

Infineon TechnologiesIn Stock: 1297BTS736L2 Datasheet

Current PartRFQ

BTS740S2XUMA1

Infineon TechnologiesIn Stock: 1709BTS740S2XUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BTS736L2 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Output configuration (High Side, N-Channel, 1:1 ratio)
• Number of outputs (2)
• Interface type (On/Off)
• Package compatibility (20-SOIC form factor)
• Fault protection features (Current Limiting, Open Load Detect, Over Temperature, Over Voltage)
• Operating temperature range (-40°C ~ 150°C)

Allowable Parameter Variations:

• Load voltage range may differ if the substitute supports the required operating window
• Output current capacity may be equal or higher
• On-resistance (Rds On) may be equal or lower
• RoHS compliance and product status may differ

The BTS740S2XUMA1 qualifies as a direct substitute based on matching output configuration, interface type, package form factor, and comprehensive fault protection feature set.

Parameter Comparison

Engineering Selection Recommendations

The BTS740S2XUMA1 is the manufacturer-recommended substitute for the obsolete BTS736L2. Selection of this substitute is supported by the following factors:

Functional Equivalence: Both devices share identical output configuration (High Side N-Channel), interface type (On/Off), number of outputs (2), and comprehensive fault protection architecture. Pin-to-pin compatibility is maintained within the 20-SOIC package.

Performance Enhancement: The BTS740S2XUMA1 provides improved electrical characteristics with lower on-resistance (27mOhm vs. 36mOhm) and higher maximum output current (4.9A vs. 4.4A), resulting in reduced power dissipation and increased design margin.

Compliance Status: The BTS740S2XUMA1 is actively manufactured and ROHS3 compliant, addressing regulatory requirements for new designs and long-term supply continuity. The BTS736L2's obsolete status necessitates transition to an active product line.

Voltage Range Consideration: The substitute operates within a narrower load voltage range (5V ~ 34V) compared to the original (4.75V ~ 43V). Applications requiring operation below 5V or above 34V must evaluate alternative solutions.

Automotive Qualification: The BTS740S2XUMA1 carries AEC-Q100 automotive qualification, providing additional reliability assurance for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the BTS740S2XUMA1 directly replace the BTS736L2 in existing designs?

A: Yes, for applications operating within the 5V to 34V load voltage range. The substitute maintains pin-to-pin compatibility, identical output configuration, and matching fault protection features. No PCB layout modifications are required. Applications requiring operation outside this voltage window must be evaluated separately.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), on-resistance (36mOhm vs. 27mOhm), maximum output current (4.4A vs. 4.9A), and load voltage range (4.75V~43V vs. 5V~34V). The substitute offers improved electrical performance and regulatory compliance.

Q: Are there any package or pinout differences?

A: No. Both devices use the 20-SOIC (0.295", 7.50mm Width) package with identical pinout. Surface mount assembly processes remain unchanged.

Q: Why is the BTS736L2 obsolete?

A: The BTS736L2 has been discontinued by Infineon Technologies. The BTS740S2XUMA1 represents the active product line continuation within the PROFET® series.

Q: What is the impact of the lower on-resistance in the substitute?

A: Lower on-resistance (27mOhm vs. 36mOhm) reduces power dissipation during operation, resulting in lower junction temperatures and improved thermal performance. This is a beneficial characteristic for thermal management.

Q: Does the substitute support the same fault protection features?

A: Yes. Both devices include Current Limiting (Fixed), Open Load Detect, Over Temperature, and Over Voltage protection. Fault protection functionality is identical.

Q: Is the BTS740S2XUMA1 suitable for automotive applications?

A: Yes. The BTS740S2XUMA1 carries AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. The original BTS736L2 does not carry this qualification.

Q: What should I verify before implementing the substitute?

A: Confirm that your application operates within the 5V to 34V load voltage range. Verify that the improved electrical characteristics (lower on-resistance, higher current capacity) are compatible with your thermal design. No other verification is required for functional compatibility.