LMK042B7331KC-W Equivalent & Substitute Parts

Part Overview

The LMK042B7331KC-W is a 330 pF ceramic capacitor manufactured by Taiyo Yuden, rated for 10V operation with X7R temperature coefficient characteristics. This surface mount multilayer ceramic capacitor (MLCC) is designed in the 01005 (0402 metric) package for SMPS filtering applications. The part carries a "Not For New Designs" product status, indicating that Taiyo Yuden has discontinued active development and support for this component. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

LMK042B7331KC-W

Taiyo YudenIn Stock: 804LMK042B7331KC-W Datasheet

Current PartRFQ

GRM022R71A331KA01L

Murata ElectronicsIn Stock: 841GRM022R71A331KA01L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMK042B7331KC-W are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic requires exact matching of the following parameters:

Mandatory Matching Parameters:

• Capacitance value: 330 pF
• Tolerance: ±10%
• Voltage rating: 10V (minimum)
• Temperature coefficient: X7R
• Operating temperature range: -55°C to 125°C
• Package designation: 01005 (0402 Metric)
• Mounting type: Surface Mount, MLCC
• Physical dimensions: 0.016" L × 0.008" W (0.40mm × 0.20mm)
• Maximum thickness: 0.009" (0.22mm)
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Substitute parts must satisfy all parameters listed above to ensure direct functional and physical compatibility without circuit redesign or PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

The GRM022R71A331KA01L manufactured by Murata Electronics is a direct parametric equivalent to the LMK042B7331KC-W. All critical electrical specifications, physical dimensions, and regulatory compliance requirements are identical between the two parts.

Selection Basis:

The substitute part maintains full compatibility across all mandatory parameters: identical capacitance, tolerance, voltage rating, temperature coefficient, operating temperature range, package dimensions, and mounting characteristics. Both parts are ROHS3 compliant and carry MSL rating 1 (Unlimited), ensuring equivalent handling and storage requirements.

A significant advantage of the GRM022R71A331KA01L is its "Active" product status, indicating that Murata Electronics continues to support this component with ongoing manufacturing, quality assurance, and supply chain availability. This contrasts with the LMK042B7331KC-W's "Not For New Designs" status, which signals end-of-life management by Taiyo Yuden.

The substitute part is suitable for direct replacement in existing designs without circuit modification, PCB layout changes, or performance degradation. Current inventory availability of 733 pieces supports production continuity.

Frequently Asked Questions (FAQ)

Q: Can the GRM022R71A331KA01L be used as a direct replacement for the LMK042B7331KC-W without PCB modifications?

A: Yes. Both parts share identical package dimensions (01005/0402 metric), footprint, and mounting characteristics. No PCB layout changes are required for substitution.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Capacitance (330 pF), tolerance (±10%), voltage rating (10V), temperature coefficient (X7R), and operating temperature range (-55°C to 125°C) are identical. Circuit performance remains unchanged.

Q: What is the significance of the "Not For New Designs" status on the LMK042B7331KC-W?

A: This status indicates that Taiyo Yuden has discontinued active development and support for this component. While existing inventory may be available, long-term supply cannot be guaranteed. The GRM022R71A331KA01L, with "Active" status, provides assured future availability.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the LMK042B7331KC-W and GRM022R71A331KA01L are ROHS3 compliant and carry identical MSL rating 1 (Unlimited), ensuring equivalent regulatory and environmental compliance.

Q: Are there any differences in moisture sensitivity or storage requirements?

A: No. Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions and identical storage requirements.

Q: What is the primary reason to transition from the LMK042B7331KC-W to the GRM022R71A331KA01L?

A: Supply chain continuity. The substitute part's "Active" product status ensures ongoing manufacturing support, quality assurance, and long-term availability, whereas the original part's "Not For New Designs" status signals potential supply constraints.

Q: Can the GRM022R71A331KA01L be used in SMPS filtering applications?

A: Yes. The substitute part meets all electrical and thermal specifications required for SMPS filtering. The X7R temperature coefficient and 10V rating provide stable performance across the full operating temperature range.