SR155C223MAT Equivalent & Substitute Parts

Part Overview

The SR155C223MAT is a 0.022 µF ceramic capacitor rated at 50V with X7R temperature coefficient, manufactured by KYOCERA AVX under the SkyCap® SR series. This radial through-hole component is designed for general-purpose applications requiring stable capacitance across the -55°C to 125°C operating range. The part maintains Active product status with full ROHS3 compliance and REACH unaffected certification. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

SR155C223MAT

KYOCERA AVXIn Stock: 1115SR155C223MAT Datasheet

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K223K15X7RF5UL2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 18660K223K15X7RF5UL2 Datasheet

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K223K15X7RH53L2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 14063K223K15X7RH53L2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SR155C223MAT is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 0.022 µF (exact match required)
• Temperature Coefficient: X7R (ensures stable performance across operating range)
• Mounting Type: Through Hole (mechanical compatibility)
• Package Type: Radial (footprint compatibility)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 50V (higher ratings provide design margin)
• Tolerance: ±10% or ±20% (tighter tolerance acceptable as upgrade)
• Lead Spacing: Within mechanical assembly tolerance
• Physical Dimensions: Minor variations acceptable if lead spacing and mounting compatibility maintained

Two substitute parts meet these criteria with differing voltage ratings and tolerances, enabling selection based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

K223K15X7RF5UL2 Selection Criteria: This substitute maintains the 50V voltage rating of the original part while offering improved tolerance at ±10%. Lead spacing of 0.098" (2.50mm) is mechanically compatible with standard 0.100" (2.54mm) pitch through-hole layouts. ROHS3 compliance and Active product status ensure regulatory alignment and long-term availability. This part is suitable for applications where the original 50V rating is sufficient and tighter capacitance tolerance provides performance benefit.

K223K15X7RH53L2 Selection Criteria: This substitute provides elevated voltage rating at 100V, delivering additional design margin for circuits operating near the 50V specification limit. Tolerance improvement to ±10% and identical X7R temperature coefficient ensure stable performance. Lead spacing compatibility and ROHS3 compliance maintain mechanical and regulatory requirements. This part is suitable for applications requiring higher voltage headroom or where 100V rated components are preferred for circuit reliability.

Both substitutes are Active products with full compliance certifications, supporting immediate procurement and deployment.

Frequently Asked Questions (FAQ)

Q: Can K223K15X7RF5UL2 be used as a direct replacement for SR155C223MAT? A: Yes. Both parts share identical capacitance (0.022 µF), voltage rating (50V), temperature coefficient (X7R), and mounting configuration (Through Hole Radial). The ±10% tolerance of the substitute is tighter than the ±20% of the original, providing improved capacitance accuracy. Lead spacing difference of 0.002" (0.04mm) is within standard assembly tolerance for through-hole applications.

Q: What is the advantage of using K223K15X7RH53L2 over the original SR155C223MAT? A: The 100V voltage rating provides 2x design margin compared to the 50V original specification. This elevated rating reduces stress on the dielectric and extends component life in circuits operating near maximum voltage limits. The ±10% tolerance also improves capacitance stability. Use this substitute when circuit design allows higher voltage components or when additional reliability margin is required.

Q: Are there mechanical compatibility concerns with the lead spacing difference? A: Lead spacing differs by 0.002" (0.04mm) between the original (0.100"/2.54mm) and substitutes (0.098"/2.50mm). This variation is within standard PCB through-hole tolerance and does not prevent mechanical insertion or soldering. Verify PCB pad spacing accommodates the substitute lead diameter and spacing before production implementation.

Q: Do all three parts meet the same regulatory requirements? A: Yes. SR155C223MAT, K223K15X7RF5UL2, and K223K15X7RH53L2 are all ROHS3 compliant and REACH unaffected. All three maintain Active product status with equivalent compliance certifications, supporting use in regulated applications without additional qualification.

Q: Which substitute should be selected for new designs? A: Selection depends on circuit voltage requirements. If the design operates safely at 50V, K223K15X7RF5UL2 provides equivalent performance with improved tolerance. If design margin or component reliability is prioritized, K223K15X7RH53L2 offers the 100V rating advantage. Both are valid engineering choices based on application-specific requirements.