SR151A331KAA Equivalent & Substitute Parts

Part Overview

The SR151A331KAA is a 330 pF ceramic capacitor from KYOCERA AVX's SkyCap® SR series, rated for 100V with C0G/NP0 temperature coefficient and ±10% tolerance. 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 active in production. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this product category.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.100" (2.54mm)
Physical Dimensions	0.150" L x 0.100" W (3.81mm x 2.54mm)
Height - Seated (Max)	0.150" (3.81mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SR151A331KAA is determined by strict equivalence in the following electrical and mechanical parameters:

Capacitance Value: Must be 330 pF
Voltage Rating: Must be 100V or higher
Temperature Coefficient: Must be C0G/NP0
Operating Temperature Range: Must support -55°C to 125°C
Mounting Type: Must be Through Hole
Package Configuration: Must be Radial with 0.100" (2.54mm) lead spacing
Physical Dimensions: Must match 0.150" L x 0.100" W (3.81mm x 2.54mm) and 0.150" (3.81mm) maximum seated height

Tolerance variations (±10% vs. ±5%) and packaging formats (Bulk vs. Cut Tape) do not affect electrical or mechanical compatibility. Parts with tighter tolerance specifications (±5%) are classified as upgrades and provide enhanced precision without requiring circuit redesign.

Parameter Comparison

Parameter	SR151A331KAA	SR151A331KAR	SR151A331JAR	SR151A331JARTR1
Manufacturer	KYOCERA AVX	KYOCERA AVX	KYOCERA AVX	KYOCERA AVX
Series	SkyCap® SR	SkyCap® SR	SkyCap® SR	SkyCap® SR
Capacitance	330 pF	330 pF	330 pF	330 pF
Tolerance	±10%	±10%	±5%	±5%
Voltage Rating	100V	100V	100V	100V
Temperature Coefficient	C0G, NP0	C0G, NP0	C0G, NP0	C0G, NP0
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial	Radial	Radial	Radial
Lead Spacing	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Physical Dimensions	0.150" L x 0.100" W (3.81mm x 2.54mm)	0.150" L x 0.100" W (3.81mm x 2.54mm)	0.150" L x 0.100" W (3.81mm x 2.54mm)	0.150" L x 0.100" W (3.81mm x 2.54mm)
Height - Seated (Max)	0.150" (3.81mm)	0.150" (3.81mm)	0.150" (3.81mm)	0.150" (3.81mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Packaging Format	Bulk	Bulk	Bulk	Cut Tape (CT)

Engineering Selection Recommendations

All four parts are active products from KYOCERA AVX and maintain full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on tolerance requirements and packaging format:

SR151A331KAA and SR151A331KAR are direct equivalents with ±10% tolerance, differing only in packaging format (Bulk). These parts are suitable for applications where ±10% capacitance tolerance meets circuit specifications.

SR151A331JAR and SR151A331JARTR1 provide upgraded tolerance of ±5%, offering tighter capacitance control. SR151A331JAR is supplied in Bulk packaging, while SR151A331JARTR1 is supplied in Cut Tape format. These parts are electrically and mechanically interchangeable with the main part and may be selected when circuit design requires enhanced precision.

Packaging format selection (Bulk vs. Cut Tape) depends on assembly process requirements and does not affect electrical performance or mechanical fit.

Frequently Asked Questions (FAQ)

Q: Can SR151A331KAR be used as a direct replacement for SR151A331KAA?

A: Yes. Both parts have identical electrical specifications (330 pF, ±10%, 100V, C0G/NP0) and mechanical dimensions (0.150" L x 0.100" W, 0.100" lead spacing). The only difference is packaging format (Bulk). They are electrically and mechanically interchangeable.

Q: What is the difference between the ±10% and ±5% tolerance parts?

A: Tolerance defines the allowable deviation from the nominal 330 pF capacitance value. SR151A331KAA and SR151A331KAR allow ±10% deviation (297–363 pF), while SR151A331JAR and SR151A331JARTR1 allow ±5% deviation (314.6–346.5 pF). The ±5% parts provide tighter capacitance control for applications requiring higher precision.

Q: Are the Cut Tape (CT) and Bulk packaging parts electrically equivalent?

A: Yes. SR151A331JARTR1 (Cut Tape) and SR151A331JAR (Bulk) are electrically identical. Packaging format affects only the supply method and assembly process compatibility, not electrical performance or mechanical fit.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided the PCB footprint and assembly equipment accommodate the radial through-hole configuration with 0.100" (2.54mm) lead spacing. All four parts share identical mechanical dimensions and lead spacing.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—SR151A331KAA, SR151A331KAR, SR151A331JAR, and SR151A331JARTR1—are ROHS3 compliant and REACH unaffected.

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