TMK042CG8R7CD-W Equivalent & Substitute Parts

Part Overview

The TMK042CG8R7CD-W is an 8.7 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 designated as Not For New Designs. Due to its obsolescence status, identification of equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this component is currently deployed.

Key Parameters

Parameter	Value
Capacitance	8.7 pF
Tolerance	±0.25 pF
Voltage Rating	25V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C to 125°C
Package / Case	01005 (0402 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.016" L x 0.008" W (0.40mm x 0.20mm)
Thickness (Max)	0.009" (0.22mm)
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TMK042CG8R7CD-W is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Capacitance value: 8.7 pF
Voltage rating: 25V minimum
Temperature coefficient: C0G/NP0
Package: 01005 (0402 Metric)
Mounting type: Surface Mount, MLCC
Operating temperature range: -55°C to 125°C
Moisture sensitivity level: 1 (Unlimited)
RoHS3 compliance

Secondary Considerations:

Tolerance specification (±0.25 pF or tighter)
Product status and availability
Series designation and base product number

Substitute parts are grouped into two categories:

Upgrade Substitutes: Parts with improved tolerance specifications (±0.1 pF) that provide enhanced precision while maintaining all primary electrical and mechanical parameters.

Parametric Equivalents: Parts with identical tolerance (±0.25 pF) and electrical specifications but different series designations, offering active product status and alternative sourcing options.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Packaging Type	Product Status	Applications
TMK042CG8R7CD-W	Taiyo Yuden	M	8.7 pF	±0.25 pF	25V	C0G, NP0	01005 (0402)	Tape & Reel	Not For New Designs	General Purpose
TMK042CG8R7BD-W	Taiyo Yuden	M	8.7 pF	±0.1 pF	25V	C0G, NP0	01005 (0402)	Cut Tape	Not For New Designs	General Purpose
TVS042CG8R7BC-W	Taiyo Yuden	V	8.7 pF	±0.1 pF	25V	C0G, NP0	01005 (0402)	Tape & Reel	Not For New Designs	RF, Microwave, High Frequency
MLAST042SCG8R7CWNA01	Taiyo Yuden	MLAS	8.7 pF	±0.25 pF	25V	C0G, NP0	01005 (0402)	Tape & Reel	Active	Medical, Non-Critical
MSART042SCG8R7CWRA01	Taiyo Yuden	MSAR	8.7 pF	±0.25 pF	25V	C0G, NP0	01005 (0402)	Tape & Reel	Active	General Purpose
MSAST042SCG8R7CWNA01	Taiyo Yuden	MSAS	8.7 pF	±0.25 pF	25V	C0G, NP0	01005 (0402)	Tape & Reel	Active	General Purpose

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

MLAST042SCG8R7CWNA01, MSART042SCG8R7CWRA01, and MSAST042SCG8R7CWNA01 are parametric equivalents with identical electrical and mechanical specifications to the TMK042CG8R7CD-W. These parts maintain ±0.25 pF tolerance, 25V rating, and C0G/NP0 temperature coefficient. All three are manufactured by Taiyo Yuden and carry Active product status, providing long-term availability. MLAST042SCG8R7CWNA01 and MSAST042SCG8R7CWNA01 are REACH Unaffected, offering additional regulatory compliance assurance.

For Enhanced Precision Applications:

TMK042CG8R7BD-W and TVS042CG8R7BC-W provide improved tolerance specifications at ±0.1 pF, delivering tighter capacitance control. Both maintain identical voltage rating, temperature coefficient, and package specifications. TMK042CG8R7BD-W is supplied in Cut Tape packaging, while TVS042CG8R7BC-W is supplied in Tape & Reel format. TVS042CG8R7BC-W is designated for RF, Microwave, and High Frequency applications, making it suitable for precision frequency-dependent circuits.

Compliance and Regulatory Status:

All substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All carry EAR99 ECCN classification and identical HTSUS code 8532.24.0020. Selection between active-status parametric equivalents should be based on application requirements and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can TMK042CG8R7BD-W be used as a direct replacement for TMK042CG8R7CD-W?

A: TMK042CG8R7BD-W is electrically compatible with improved tolerance (±0.1 pF versus ±0.25 pF). All critical parameters—capacitance value, voltage rating, temperature coefficient, package, and operating temperature range—are identical. The primary difference is packaging format (Cut Tape versus Tape & Reel) and tighter tolerance specification. It is a suitable upgrade substitute.

Q: What is the difference between the M series (TMK042C) and MLAS series (MLAST042S)?

A: Both series share identical electrical specifications for this 8.7 pF, 25V, C0G/NP0 capacitor. The primary differences are product status (M series is Not For New Designs; MLAS series is Active) and application designation (MLAS is specified for Medical, Non-Critical applications). The MLAS series provides active product support and longer availability.

Q: Is TVS042CG8R7BC-W suitable for general purpose applications?

A: TVS042CG8R7BC-W meets all electrical and mechanical requirements for general purpose use. It is designated for RF, Microwave, and High Frequency applications, indicating enhanced performance characteristics in those domains. The ±0.1 pF tolerance provides precision suitable for frequency-critical circuits. It is electrically compatible with general purpose applications.

Q: What packaging formats are available for substitutes?

A: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT). TMK042CG8R7BD-W is supplied in Cut Tape format. All parametric equivalents (MLAST042SCG8R7CWNA01, MSART042SCG8R7CWRA01, MSAST042SCG8R7CWNA01) and TVS042CG8R7BC-W are supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant. Additionally, MLAST042SCG8R7CWNA01 and MSAST042SCG8R7CWNA01 carry REACH Unaffected status, providing additional regulatory assurance for applications with stringent environmental compliance requirements.

Q: What is the inventory status of substitute parts?

A: TMK042CG8R7BD-W has 40,777 pieces in stock. TVS042CG8R7BC-W has 80,935 pieces in stock. Parametric equivalents have lower inventory: MLAST042SCG8R7CWNA01 (729 pieces), MSART042SCG8R7CWRA01 (1,037 pieces), and MSAST042SCG8R7CWNA01 (689 pieces). For high-volume requirements, TMK042CG8R7BD-W and TVS042CG8R7BC-W offer superior availability.

Q: Can tolerance differences affect circuit performance?

A: Tolerance differences between ±0.25 pF and ±0.1 pF are significant only in frequency-dependent or precision tuning applications. For general purpose circuits, both tolerance specifications are functionally equivalent. For RF, microwave, or high-frequency applications requiring precise capacitance values, the ±0.1 pF tolerance of TMK042CG8R7BD-W or TVS042CG8R7BC-W is preferred.

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