SR155A331KAR Equivalent & Substitute Parts

Part Overview

The SR155A331KAR is a 330 pF ceramic capacitor manufactured by KYOCERA AVX in 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 (capacitance, voltage rating, temperature coefficient) and mechanical specifications (package type, lead spacing, mounting style) align with application requirements.

Substiute Parts

SR155A331KAR

KYOCERA AVXIn Stock: 780SR155A331KAR Datasheet

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SR151A331JAR

KYOCERA AVXIn Stock: 2831SR151A331JAR Datasheet

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SR151A331JARTR1

KYOCERA AVXIn Stock: 4551SR151A331JARTR1 Datasheet

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SR151A331KAR

KYOCERA AVXIn Stock: 1683SR151A331KAR Datasheet

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K331J15C0GF53L2

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SR155A331KAR is determined by the following criteria:

Primary Electrical Parameters: Capacitance value (330 pF) and temperature coefficient (C0G/NP0) must match exactly. Voltage rating must equal or exceed the original 50V specification.

Tolerance Consideration: Tolerance values of ±5% or ±10% are acceptable substitutes, as both fall within standard ceramic capacitor specifications for this value range.

Mechanical Compatibility: Lead spacing (0.100" / 2.54mm), mounting type (through hole), and package style (radial) must remain consistent for PCB layout compatibility.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and active product status.

Four substitute parts meet these criteria: three from KYOCERA AVX with upgraded 100V ratings (SR151A331JAR, SR151A331JARTR1, SR151A331KAR), and one from Vishay Beyschlag/Draloric/BC Components (K331J15C0GF53L2) with matching 50V rating.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements for general-purpose applications.

KYOCERA AVX SR151 Series (100V Rating): SR151A331JAR, SR151A331JARTR1, and SR151A331KAR provide elevated voltage margin above the original 50V specification. These parts share identical lead spacing and radial package configuration. Selection between these three depends on packaging requirements: bulk packaging (SR151A331JAR, SR151A331KAR) or cut tape format (SR151A331JARTR1). Tolerance selection between ±5% (SR151A331JAR, SR151A331JARTR1) and ±10% (SR151A331KAR) depends on circuit precision requirements.

Vishay Beyschlag K331J15C0GF53L2: This part maintains the original 50V voltage rating and ±5% tolerance. Lead spacing measures 0.098" (2.50mm), which differs marginally from the 0.100" (2.54mm) specification of the SR155A331KAR. Physical dimensions are slightly larger (0.157" L x 0.102" W versus 0.150" L x 0.100" W), and seated height reaches 0.220" compared to 0.150" for the original part. PCB layout verification is necessary when considering this substitute.

Frequently Asked Questions (FAQ)

Q: Can SR151A331JAR replace SR155A331KAR directly?

A: Yes. Both parts share 330 pF capacitance, C0G/NP0 temperature coefficient, identical lead spacing (0.100" / 2.54mm), and radial through-hole configuration. The SR151A331JAR operates at 100V versus the original 50V, providing additional voltage margin. Tolerance improves to ±5% from ±10%.

Q: What is the difference between SR151A331JAR and SR151A331JARTR1?

A: These parts are electrically identical (330 pF, 100V, ±5%, C0G/NP0). The difference is packaging format: SR151A331JAR is supplied in bulk, while SR151A331JARTR1 is supplied in cut tape format. Selection depends on assembly process requirements.

Q: Is K331J15C0GF53L2 a direct substitute?

A: K331J15C0GF53L2 matches the electrical specification (330 pF, 50V, C0G/NP0) and improves tolerance to ±5%. However, lead spacing is 0.098" (2.50mm) versus 0.100" (2.54mm), and physical dimensions are slightly larger. PCB layout compatibility must be confirmed before selection.

Q: Why would I choose a 100V-rated part over the original 50V?

A: Higher voltage-rated capacitors provide additional safety margin in circuits subject to voltage transients or overshoot conditions. The 100V variants (SR151 series) maintain identical physical footprint and lead spacing while offering this enhanced specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and active product status, meeting regulatory requirements for current manufacturing and deployment.