K121J10C0GF53L2 Equivalent & Substitute Parts

Part Overview

The K121J10C0GF53L2 is a 120 pF ceramic capacitor manufactured by Vishay Beyschlag/Draloric/BC Components in the Mono-Kap™ K series. This radial through-hole component operates at 50V with C0G/NP0 temperature coefficient and ±5% tolerance, suitable for general-purpose applications across the -55°C to 125°C temperature range. The part is currently active and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

K121J10C0GF53L2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 864K121J10C0GF53L2 Datasheet

Current PartRFQ

FK28C0G1H121JN000

TDK CorporationIn Stock: 1418FK28C0G1H121JN000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the K121J10C0GF53L2 is determined by the following critical parameters:

• Capacitance value: 120 pF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage rating: 50V minimum (equal or higher acceptable)
• Temperature coefficient: C0G/NP0 (exact match required)
• Operating temperature range: -55°C ~ 125°C (equal or wider range acceptable)
• Mounting type: Through Hole (exact match required)
• Package type: Radial (exact match required)

The substitute part FK28C0G1H121JN000 meets all critical electrical parameters. Physical dimensions and lead spacing differ between the main part and substitute, which may affect board layout compatibility but does not impact electrical performance for general-purpose applications.

Parameter Comparison

Engineering Selection Recommendations

The K121J10C0GF53L2 is the preferred selection for new designs due to its active product status. The FK28C0G1H121JN000 substitute is electrically equivalent but carries a "Not For New Designs" status, indicating it may have limited long-term availability or support.

Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Selection between these parts should account for:

• Board layout constraints: The FK28C0G1H121JN000 has larger physical dimensions and different lead spacing (5.00mm vs. 2.50mm), requiring PCB footprint verification before substitution.
• Supply chain considerations: The K121J10C0GF53L2 has 756 units in stock; FK28C0G1H121JN000 has 1369 units available.
• Long-term availability: The main part's active status provides greater assurance of continued supply.

Frequently Asked Questions (FAQ)

Q: Can FK28C0G1H121JN000 be used as a direct replacement for K121J10C0GF53L2?

A: Electrically, yes. Both parts have identical capacitance (120 pF), tolerance (±5%), voltage rating (50V), and temperature coefficient (C0G/NP0). However, physical dimensions and lead spacing differ. PCB footprint compatibility must be confirmed before substitution.

Q: What is the significance of the "Not For New Designs" status on the FK28C0G1H121JN000?

A: This designation indicates the part may have limited future availability or manufacturer support. For new product development, the active K121J10C0GF53L2 is recommended to ensure long-term supply chain stability.

Q: Are there differences in lead style between these parts?

A: Yes. The K121J10C0GF53L2 has straight leads, while the FK28C0G1H121JN000 has formed leads with a kinked configuration. This affects insertion into PCB holes and may require different assembly handling.

Q: Do both parts meet current environmental compliance standards?

A: Yes. Both the K121J10C0GF53L2 and FK28C0G1H121JN000 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the primary reason to consider a substitute part?

A: Substitutes are considered when the primary part experiences supply constraints, extended lead times, or end-of-life conditions. In this case, both parts meet equivalent electrical specifications, but the main part's active status makes it the preferred choice for new designs.