BTS133BKSA1 Equivalent & Substitute Parts

Part Overview

The BTS133BKSA1 is a Power Switch/Driver IC featuring 1:1 N-Channel configuration with 7A maximum output current in TO-220-3 through-hole packaging. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part operates across -40°C to 150°C junction temperature range with integrated fault protection including current limiting, over-temperature, and over-voltage protection.

Substiute Parts

BTS133BKSA1

Infineon TechnologiesIn Stock: 1939BTS133BKSA1 Datasheet

Current PartRFQ

BTS3018TCATMA1

Infineon TechnologiesIn Stock: 2225BTS3018TCATMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BTS133BKSA1 is determined by the following critical electrical and mechanical parameters:

• Voltage Rating: Maximum load voltage of 60V must be maintained or exceeded
• Output Current: Substitute must support minimum 6A output current (BTS133BKSA1 rated at 7A)
• Switch Configuration: 1:1 N-Channel low-side output configuration required
• Fault Protection: Current limiting, over-temperature, and over-voltage protection mandatory
• Operating Temperature Range: -40°C to 150°C junction temperature compatibility
• RoHS Compliance: ROHS3 compliance required for regulatory alignment

The BTS3018TCATMA1 qualifies as a manufacturer-recommended substitute based on identical electrical specifications within acceptable tolerances, matching fault protection features, and equivalent temperature operating range. The primary distinction is packaging format (surface mount TO-263-3 versus through-hole TO-220-3) and output current rating (6A versus 7A), with the substitute providing lower on-resistance (18mOhm versus 40mOhm).

Parameter Comparison

Engineering Selection Recommendations

The BTS3018TCATMA1 is the manufacturer-recommended substitute for the obsolete BTS133BKSA1. Selection of this substitute is supported by:

• Active Product Status: BTS3018TCATMA1 maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements
• Electrical Equivalence: Identical 60V load voltage rating, matching fault protection architecture, and equivalent operating temperature range ensure functional compatibility
• Performance Enhancement: The substitute provides improved on-resistance (18mOhm versus 40mOhm), resulting in reduced power dissipation and improved thermal performance

Substitution requires PCB layout modification to accommodate the TO-263-3 surface-mount package format in place of the through-hole TO-220-3 configuration. The 1A reduction in maximum output current (6A versus 7A) must be evaluated against application load requirements.

Frequently Asked Questions (FAQ)

Q: Can BTS3018TCATMA1 directly replace BTS133BKSA1 in existing through-hole designs?

A: Direct PCB replacement is not possible due to package format differences. BTS133BKSA1 uses through-hole TO-220-3 mounting, while BTS3018TCATMA1 requires surface-mount TO-263-3 footprint. PCB redesign is necessary for substitution.

Q: What is the impact of the 1A current rating difference between these parts?

A: BTS133BKSA1 is rated at 7A maximum output current, while BTS3018TCATMA1 is rated at 6A. Applications requiring sustained output current above 6A must retain the original part or identify alternative solutions. Applications operating below 6A are unaffected.

Q: Are there thermal performance differences between these substitutes?

A: BTS3018TCATMA1 provides lower on-resistance (18mOhm versus 40mOhm), resulting in reduced power dissipation and improved thermal efficiency. Both components operate across identical -40°C to 150°C junction temperature range.

Q: What packaging considerations apply to this substitution?

A: BTS133BKSA1 uses through-hole TO-220-3 packaging suitable for through-hole assembly. BTS3018TCATMA1 uses surface-mount TO-263-3 (D2PAK) packaging requiring SMT assembly processes. Thermal management characteristics differ between packages due to different lead configurations and mounting methods.

Q: Are both parts compliant with current regulatory standards?

A: Both BTS133BKSA1 and BTS3018TCATMA1 maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for electronic component manufacturing and distribution.