TMK042CG080BD-W Equivalent & Substitute Parts

Part Overview

The TMK042CG080BD-W is an 8 pF ceramic capacitor manufactured by Taiyo Yuden, rated for 25V with C0G/NP0 temperature coefficient characteristics. This component is packaged in 01005 (0402 Metric) form factor and is designed for surface mount applications. The part carries a "Not For New Designs" product status, indicating that alternative solutions should be evaluated for new circuit implementations. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

TMK042CG080BD-W

Taiyo YudenIn Stock: 1891TMK042CG080BD-W Datasheet

Current PartRFQ

MLAST042SCG080BWNA01

Taiyo YudenIn Stock: 835MLAST042SCG080BWNA01 Datasheet

Parametric EquivalentRFQ

MSAST042SCG080BWNA01

Taiyo YudenIn Stock: 791MSAST042SCG080BWNA01 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMK042CG080BD-W is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 8 pF
• Tolerance: ±0.1pF
• Voltage rating: 25V
• Temperature coefficient: C0G, NP0
• Operating temperature range: -55°C ~ 125°C

Mechanical Parameters:

• Package type: 01005 (0402 Metric)
• Mounting type: Surface Mount, MLCC
• Physical dimensions: 0.016" L x 0.008" W (0.40mm x 0.20mm)
• Maximum thickness: 0.009" (0.22mm)

Compliance Parameters:

• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts identified below meet all electrical and mechanical specifications. Differences in packaging format (Cut Tape versus Tape & Reel) and product status do not affect functional equivalence but may impact procurement and supply chain considerations.

Parameter Comparison

Engineering Selection Recommendations

MLAST042SCG080BWNA01 is the primary substitute for new applications and ongoing production. This part carries Active product status and is manufactured by Taiyo Yuden under the MLAS series. It maintains full electrical and mechanical equivalence to the TMK042CG080BD-W while offering the advantage of active product support. The Tape & Reel packaging format is standard for high-volume manufacturing operations. ROHS3 compliance and unlimited moisture sensitivity rating ensure compatibility with modern assembly and environmental requirements.

MSAST042SCG080BWNA01 is an alternative substitute also carrying Active product status, manufactured under the MSAS series. This part provides identical electrical specifications and mechanical compatibility. The Tape & Reel packaging format supports automated assembly processes. Selection between MLAST042SCG080BWNA01 and MSAST042SCG080BWNA01 should be based on supply chain availability, lead time requirements, and procurement preferences, as both parts are functionally equivalent.

The TMK042CG080BD-W in Cut Tape packaging may be retained for low-volume or prototype applications where smaller quantities are required, but transition to active substitute parts is recommended for new designs and sustained production.

Frequently Asked Questions (FAQ)

Q: Can MLAST042SCG080BWNA01 or MSAST042SCG080BWNA01 be used as direct replacements for TMK042CG080BD-W in existing designs?

A: Yes. Both substitute parts meet all electrical parameters (8 pF capacitance, ±0.1pF tolerance, 25V rating, C0G/NP0 temperature coefficient, -55°C to 125°C operating range) and mechanical specifications (01005 package, surface mount MLCC, identical dimensions and thickness). The parts are functionally interchangeable at the circuit level.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for small-quantity orders and manual assembly. Tape & Reel (TR) packaging supplies components on continuous reels optimized for automated pick-and-place assembly equipment. Both formats contain the same component; packaging selection depends on production volume and assembly methodology.

Q: Why is TMK042CG080BD-W marked "Not For New Designs"?

A: This designation indicates the part is in mature or end-of-life status. While existing inventory remains available, Taiyo Yuden recommends using active alternatives (MLAST042SCG080BWNA01 or MSAST042SCG080BWNA01) for new circuit designs to ensure long-term supply continuity and manufacturer support.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: All three parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). The substitute parts carry REACH Unaffected status, providing additional regulatory documentation. No functional compliance differences exist that would affect circuit performance or environmental requirements.

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

A: MLAST042SCG080BWNA01 is specified for Medical and Non-Critical applications. MSAST042SCG080BWNA01 is specified for General Purpose applications. Application suitability should be confirmed against specific medical device requirements and regulatory classifications before implementation.

Q: What should be considered when transitioning from TMK042CG080BD-W to a substitute part?

A: Transition considerations include: (1) Packaging format compatibility with existing assembly equipment; (2) Supply chain lead times and availability; (3) Procurement cost differences; (4) Application-specific requirements (medical versus general purpose); (5) Inventory management of existing TMK042CG080BD-W stock. Electrical and mechanical compatibility requires no design changes.