STK621-140C Equivalent & Substitute Parts

Part Overview

The STK621-140C is a motor driver integrated circuit manufactured by onsemi, classified as a Power Management (PMIC) component. This device is designated as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design considerations. The motor driver function requires careful evaluation of electrical and mechanical compatibility when selecting alternative components.

Substiute Parts

STK621-140C

onsemiIn Stock: 1204STK621-140C Datasheet

Current PartRFQ

STK541UC62K-E

onsemiIn Stock: 1454STK541UC62K-E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STK621-140C is based on the following criteria derived from the provided parameters:

• Manufacturer Continuity: onsemi as the original manufacturer
• Functional Category: Power driver and motor control applications
• Regulatory Compliance: REACH Unaffected status and EAR99 ECCN classification
• Tariff Classification: HTSUS code 8542.39.0001 alignment

The identified substitute part STK541UC62K-E represents a power driver module within the onsemi product family, sharing the same regulatory and compliance framework as the original STK621-140C.

Parameter Comparison

Engineering Selection Recommendations

Selection between the STK621-140C and STK541UC62K-E must account for the following factors:

• Product Status Consideration: The STK621-140C is obsolete, while the STK541UC62K-E is designated "Not For New Designs." Both components are outside active production cycles and should be evaluated based on existing inventory requirements and system constraints.

• Regulatory Alignment: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring equivalent compliance posture for export and environmental regulations.

• Tariff Classification: Identical HTSUS coding (8542.39.0001) confirms both components fall within the same customs classification framework.

• Physical Form Factor: The STK541UC62K-E specifies through-hole mounting in a 23-PowerSIP Module package with 19 leads and formed leads. Mechanical compatibility with existing PCB designs must be verified independently.

Frequently Asked Questions (FAQ)

Q: Can the STK541UC62K-E directly replace the STK621-140C in existing designs?

A: Direct substitution requires verification of electrical specifications, pin configuration, and mechanical form factor compatibility. The provided parameters confirm regulatory and compliance alignment but do not establish functional equivalence for all application requirements.

Q: What is the significance of the "Not For New Designs" status of the STK541UC62K-E?

A: This designation indicates the component is outside the manufacturer's active product development cycle. It may be available from existing inventory but should not be selected for new system designs without documented justification.

Q: Are there packaging differences between these parts?

A: The STK621-140C packaging is not specified in the provided data. The STK541UC62K-E is supplied in tube packaging with through-hole mounting configuration. Physical compatibility must be confirmed for your specific application.

Q: Do both parts share the same regulatory compliance framework?

A: Yes. Both the STK621-140C and STK541UC62K-E maintain REACH Unaffected status, EAR99 ECCN classification, and identical HTSUS tariff coding (8542.39.0001), confirming equivalent regulatory treatment.

Q: What is the moisture sensitivity level difference between these parts?

A: The STK621-140C specifies MSL 1 (Unlimited), indicating no moisture sensitivity constraints. The STK541UC62K-E lists MSL as Not Applicable, which is typical for module-level assemblies. Storage and handling requirements should be confirmed with the manufacturer.