SR155A331KAT Equivalent & Substitute Parts

Part Overview

The SR155A331KAT is a 330 pF ceramic capacitor manufactured by KYOCERA AVX from the SkyCap® SR series. This radial through-hole component operates at 50V with C0G/NP0 temperature coefficient and ±10% tolerance. The part maintains active product status and is ROHS3 compliant. Substitute parts are identified when electrical parameters remain within acceptable operating ranges while maintaining mechanical compatibility and regulatory compliance.

Substiute Parts

SR155A331KAT

KYOCERA AVXIn Stock: 1049SR155A331KAT Datasheet

Current PartRFQ

SR151A331JAR

KYOCERA AVXIn Stock: 2831SR151A331JAR Datasheet

UpgradeRFQ

SR151A331JARTR1

KYOCERA AVXIn Stock: 4551SR151A331JARTR1 Datasheet

UpgradeRFQ

SR151A331KAR

KYOCERA AVXIn Stock: 1683SR151A331KAR Datasheet

UpgradeRFQ

K331J15C0GF53L2

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2441K331J15C0GF53L2 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Electrical Parameters: Capacitance value (330 pF) and temperature coefficient (C0G/NP0) must remain constant across all substitutes.

Voltage Rating: Substitutes may operate at equal or higher voltage ratings. The SR155A331KAT operates at 50V; substitutes rated at 100V are acceptable as they provide enhanced voltage margin.

Tolerance: Substitutes with ±5% tolerance are acceptable as this represents improved precision compared to the original ±10% specification.

Mechanical Compatibility: Lead spacing (0.100" / 2.54mm) and radial through-hole mounting must be maintained. Minor dimensional variations in length and height are acceptable provided the component fits standard PCB hole patterns.

Regulatory Compliance: All substitutes must maintain ROHS3 compliance and REACH unaffected status.

Manufacturer Variants: KYOCERA AVX SkyCap® SR series parts with identical electrical specifications but different packaging formats (Bulk, Cut Tape) are direct substitutes. The Vishay Beyschlag Mono-Kap™ K series part meets electrical requirements with compatible mechanical footprint.

Parameter Comparison

Engineering Selection Recommendations

KYOCERA AVX SkyCap® SR Series Substitutes (SR151A331JAR, SR151A331JARTR1, SR151A331KAR): These parts maintain identical mechanical footprint and lead spacing with the original SR155A331KAT. The 100V rating provides increased voltage margin for applications requiring enhanced reliability. The ±5% tolerance variants (SR151A331JAR, SR151A331JARTR1) offer improved capacitance accuracy. Selection between Bulk and Cut Tape packaging depends on assembly process requirements. All variants maintain active product status and ROHS3 compliance.

Vishay Beyschlag Mono-Kap™ K Series (K331J15C0GF53L2): This cross-manufacturer substitute maintains 50V voltage rating and ±5% tolerance with identical capacitance and temperature coefficient. Lead spacing is 0.098" (2.50mm), representing a 0.002" (0.04mm) variation from the original specification. This minor dimensional difference remains within standard PCB tolerance ranges for radial through-hole components. The part is ROHS3 compliant and maintains active product status.

Frequently Asked Questions (FAQ)

Q: Can SR151A331JAR (100V) replace SR155A331KAT (50V) in my circuit?

A: Yes. The SR151A331JAR operates at 100V, which exceeds the original 50V requirement. Higher voltage rating provides additional safety margin and does not degrade circuit performance. Electrical characteristics (capacitance, temperature coefficient, tolerance) remain compatible.

Q: What is the difference between SR151A331JARTR1 and SR151A331JAR?

A: Both parts are electrically identical (330 pF, 100V, ±5%, C0G/NP0). The difference is packaging format: SR151A331JARTR1 is supplied in Cut Tape (CT) format for automated assembly, while SR151A331JAR is supplied in Bulk format. Select based on your assembly process requirements.

Q: Is the Vishay K331J15C0GF53L2 mechanically compatible with the original SR155A331KAT?

A: The K331J15C0GF53L2 maintains radial through-hole mounting with 0.098" lead spacing compared to the original 0.100" spacing. This 0.002" difference is within standard PCB hole tolerance and does not prevent installation. Verify PCB hole pattern specifications for your application.

Q: Why would I choose a substitute with higher voltage rating?

A: Higher voltage rating (100V vs. 50V) provides increased operational margin and improved reliability in applications subject to voltage transients or thermal stress. No performance degradation occurs in circuits designed for 50V operation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original SR155A331KAT.