SR151C221KAATR1 Equivalent & Substitute Parts

Part Overview

The SR151C221KAATR1 is a 220 pF ceramic capacitor rated at 100V with X7R temperature coefficient, manufactured by KYOCERA AVX under the SkyCap® SR series. This through-hole radial component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant and currently in active production status. Equivalent and substitute parts are identified when identical electrical specifications and compatible mechanical parameters are available from alternative manufacturers.

Substiute Parts

SR151C221KAATR1

KYOCERA AVXIn Stock: 784SR151C221KAATR1 Datasheet

Current PartRFQ

K221K10X7RH5UH5

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 9352K221K10X7RH5UH5 Datasheet

MFR RecommendedRFQ

RDER72A221K0S1H03A

Murata ElectronicsIn Stock: 2951RDER72A221K0S1H03A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR151C221KAATR1 are qualified based on the following criteria:

• Identical capacitance value: 220 pF
• Identical tolerance: ±10%
• Identical voltage rating: 100V
• Identical temperature coefficient: X7R
• Identical operating temperature range: -55°C to 125°C
• Compatible mounting type: Through Hole
• Compatible package type: Radial
• Equivalent compliance status: ROHS3 Compliant

The two qualified substitutes meet all electrical specifications and are mechanically compatible for through-hole radial mounting applications. Variations in physical dimensions and lead spacing are within acceptable tolerances for general-purpose circuit board layouts.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SR151C221KAATR1, K221K10X7RH5UH5, and RDER72A221K0S1H03A—are functionally equivalent for applications requiring 220 pF, 100V, X7R ceramic capacitors. Selection among these parts should be based on:

• Availability and lead time requirements
• Packaging format preference (Cut Tape vs. alternative packaging)
• PCB layout constraints related to physical dimensions and lead spacing
• Supply chain and procurement policies
• All parts maintain ROHS3 compliance and REACH unaffected status

Frequently Asked Questions (FAQ)

Q: Can K221K10X7RH5UH5 be used as a direct replacement for SR151C221KAATR1?

A: Yes. Both parts share identical electrical specifications (220 pF, ±10%, 100V, X7R, -55°C to 125°C). Physical dimensions differ slightly, but both are through-hole radial packages suitable for standard PCB layouts.

Q: What is the difference between the lead styles of these substitutes?

A: SR151C221KAATR1 features straight leads, while K221K10X7RH5UH5 and RDER72A221K0S1H03A have formed leads. Formed leads may require different insertion techniques but do not affect electrical performance.

Q: Are there any compliance differences between these parts?

A: No. All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes.

Q: How do physical dimensions affect substitution?

A: Physical dimensions vary within the radial package category. Lead spacing differences (2.54mm, 5.00mm, and 2.50mm respectively) must be verified against PCB hole patterns to ensure mechanical compatibility.

Q: Which substitute offers the best availability?

A: K221K10X7RH5UH5 (Vishay) shows the highest inventory level at 9,322 pieces. RDER72A221K0S1H03A (Murata) provides 2,853 pieces. Availability should be confirmed with current suppliers.