TMK042CG3R4CD-W Equivalent & Substitute Parts

Part Overview

The TMK042CG3R4CD-W is a 3.4 pF ceramic capacitor manufactured by Taiyo Yuden, rated for 25V with C0G/NP0 temperature coefficient characteristics. This surface mount multilayer ceramic capacitor (MLCC) is packaged in 01005 (0402 Metric) form factor and is supplied in Tape & Reel (TR) packaging. The part is designated as Not For New Designs, indicating its legacy status in the product portfolio. Alternative equivalent and substitute parts are available to support ongoing production requirements and design flexibility.

Substiute Parts

TMK042CG3R4CD-W

Taiyo YudenIn Stock: 1014TMK042CG3R4CD-W Datasheet

Current PartRFQ

TMK042CG3R4BD-W

Taiyo YudenIn Stock: 1099TMK042CG3R4BD-W Datasheet

UpgradeRFQ

MLAST042SCG3R4CWNA01

Taiyo YudenIn Stock: 955MLAST042SCG3R4CWNA01 Datasheet

Parametric EquivalentRFQ

MSAST042SCG3R4CWNA01

Taiyo YudenIn Stock: 978MSAST042SCG3R4CWNA01 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMK042CG3R4CD-W is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Capacitance: 3.4 pF
• Voltage Rating: 25V
• Temperature Coefficient: C0G, NP0
• Package / Case: 01005 (0402 Metric)
• Mounting Type: Surface Mount, MLCC
• Operating Temperature Range: -55°C ~ 125°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Tolerance: ±0.25pF or tighter (±0.1pF)
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT)
• Product Status: Active or Not For New Designs
• Series Designation: M, MLAS, or MSAS

Substitute parts must maintain identical electrical performance and physical dimensions while meeting or exceeding the original part's compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

TMK042CG3R4BD-W serves as an upgrade substitute with improved tolerance specification (±0.1pF versus ±0.25pF). This part maintains identical electrical and mechanical characteristics while offering tighter capacitance tolerance. Packaging is supplied in Cut Tape (CT) format rather than Tape & Reel (TR). Both parts retain Not For New Designs status.

MLAST042SCG3R4CWNA01 is a parametric equivalent with Active product status, indicating current manufacturing support. This part is designated for Medical and Non-Critical applications. It maintains identical capacitance, voltage rating, tolerance, and physical dimensions as the original part. Tape & Reel (TR) packaging is standard for this part number.

MSAST042SCG3R4CWNA01 is a parametric equivalent with Active product status and General Purpose application classification. This part provides identical electrical and mechanical specifications to the original TMK042CG3R4CD-W. Tape & Reel (TR) packaging is standard for this part number.

All substitute parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original part's compliance profile. Selection between substitutes should be based on application requirements, packaging format preference, and product lifecycle status.

Frequently Asked Questions (FAQ)

Q: Can TMK042CG3R4BD-W be used as a direct replacement for TMK042CG3R4CD-W?

A: Yes. Both parts share identical capacitance (3.4 pF), voltage rating (25V), temperature coefficient (C0G, NP0), package (01005), and operating temperature range (-55°C ~ 125°C). The primary difference is improved tolerance (±0.1pF versus ±0.25pF) and packaging format (Cut Tape versus Tape & Reel). Electrical performance is equivalent or superior.

Q: What is the difference between MLAST042SCG3R4CWNA01 and MSAST042SCG3R4CWNA01?

A: Both parts are parametric equivalents with identical electrical specifications and physical dimensions. The primary differences are series designation (MLAS versus MSAS) and application classification (Medical, Non-Critical versus General Purpose). Both parts have Active product status and are supplied in Tape & Reel (TR) packaging.

Q: Why is TMK042CG3R4CD-W marked as Not For New Designs?

A: This designation indicates the part is in legacy status. For new design implementations, MLAST042SCG3R4CWNA01 or MSAST042SCG3R4CWNA01 are recommended as both maintain Active product status with ongoing manufacturing support.

Q: Are all substitute parts ROHS3 Compliant?

A: Yes. All listed substitute parts (TMK042CG3R4BD-W, MLAST042SCG3R4CWNA01, and MSAST042SCG3R4CWNA01) are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original part's compliance certifications.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats do not affect electrical performance. Selection between formats is based on assembly process requirements and inventory management preferences.

Q: Can these parts be used interchangeably in medical applications?

A: MLAST042SCG3R4CWNA01 is specifically designated for Medical and Non-Critical applications. TMK042CG3R4CD-W, TMK042CG3R4BD-W, and MSAST042SCG3R4CWNA01 are classified for General Purpose applications. Application-specific requirements should be evaluated before substitution in medical contexts.

Q: What tolerance specification should be selected?

A: TMK042CG3R4CD-W and MLAST042SCG3R4CWNA01 and MSAST042SCG3R4CWNA01 offer ±0.25pF tolerance. TMK042CG3R4BD-W offers tighter ±0.1pF tolerance. Selection depends on circuit requirements for capacitance accuracy. Tighter tolerance provides improved performance in precision applications.