SR155C103MAT Equivalent & Substitute Parts

Part Overview

The SR155C103MAT is a 10000 pF ceramic capacitor rated at 50V with X7R temperature coefficient, manufactured by KYOCERA AVX in the SkyCap® SR series. This radial through-hole component is designed for general-purpose applications and maintains active product status with ROHS3 compliance. Equivalent and substitute parts are identified based on matching capacitance, temperature coefficient, and mechanical compatibility while allowing for controlled variations in voltage rating and tolerance specifications.

Key Parameters

Parameter	SR155C103MAT
Capacitance	10000 pF
Voltage Rating	50V
Tolerance	±20%
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.100" (2.54mm)
Size / Dimension	0.150" L x 0.100" W (3.81mm x 2.54mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SR155C103MAT is determined by the following critical parameters:

Capacitance value must remain 10000 pF
Temperature coefficient must be X7R
Mounting type must be Through Hole with Radial package
Lead spacing must be 0.100" (2.54mm)
Physical dimensions must be compatible with 0.150" L x 0.100" W footprint

Voltage rating may be increased from 50V to 100V without functional degradation. Tolerance may be tightened from ±20% to ±10% or ±5%. Packaging format (Bulk or Cut Tape) does not affect electrical equivalence. Manufacturer substitution is permitted when all electrical and mechanical parameters align.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Lead Spacing	Size (L x W)	Packaging	Status
SR155C103MAT	KYOCERA AVX	10000 pF	50V	±20%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR155C103KAA	KYOCERA AVX	10000 pF	50V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR155C103KAR	KYOCERA AVX	10000 pF	50V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR155C103MAR	KYOCERA AVX	10000 pF	50V	±20%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR151C103JAR	KYOCERA AVX	10000 pF	100V	±5%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR151C103KAA	KYOCERA AVX	10000 pF	100V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR151C103KAR	KYOCERA AVX	10000 pF	100V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Bulk	Active
SR151C103KAATR1	KYOCERA AVX	10000 pF	100V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Cut Tape (CT)	Active
SR151C103KARTR1	KYOCERA AVX	10000 pF	100V	±10%	X7R	0.100" (2.54mm)	0.150" x 0.100" (3.81mm x 2.54mm)	Cut Tape (CT)	Active
K103M15X7RF53L2	Vishay Beyschlag/Draloric/BC Components	10000 pF	50V	±20%	X7R	0.098" (2.50mm)	0.157" x 0.102" (4.00mm x 2.60mm)	Bulk	Active
K103K10X7RF53L2	Vishay Beyschlag/Draloric/BC Components	10000 pF	50V	±10%	X7R	0.098" (2.50mm)	0.142" x 0.091" (3.60mm x 2.30mm)	Bulk	Active

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the SR155C103MAT. Selection between KYOCERA AVX SkyCap® SR series parts and Vishay Beyschlag Mono-Kap™ K series parts depends on application-specific requirements and PCB layout constraints.

KYOCERA AVX parts SR155C103KAA, SR155C103KAR, and SR155C103MAR provide direct mechanical and electrical compatibility with identical lead spacing and footprint dimensions. These parts differ only in tolerance specification, with ±10% tolerance options offering improved capacitance accuracy compared to the ±20% specification of the original part.

KYOCERA AVX parts SR151C103JAR, SR151C103KAA, SR151C103KAR, SR151C103KAATR1, and SR151C103KARTR1 provide voltage-upgraded alternatives at 100V rating while maintaining identical mechanical dimensions and lead spacing. These parts are suitable for applications requiring higher voltage margin or operating in elevated voltage environments.

Vishay Beyschlag parts K103M15X7RF53L2 and K103K10X7RF53L2 provide cross-manufacturer alternatives with comparable electrical specifications. Minor dimensional variations exist in lead spacing and physical size; PCB layout verification is required before implementation.

Frequently Asked Questions (FAQ)

Q: Can SR151C103JAR (100V) replace SR155C103MAT (50V)?

A: Yes. The SR151C103JAR maintains identical capacitance, temperature coefficient, mounting type, and lead spacing. The increased voltage rating of 100V provides additional design margin and does not degrade performance in 50V applications.

Q: What is the difference between SR155C103KAA and SR155C103KAR?

A: Both parts are electrically and mechanically identical 10000 pF 50V X7R capacitors with ±10% tolerance. The designation difference reflects internal KYOCERA AVX part numbering; both are suitable for direct substitution.

Q: Are Cut Tape (CT) packaged parts equivalent to Bulk packaged parts?

A: Yes. Packaging format does not affect electrical or mechanical performance. SR151C103KAATR1 and SR151C103KARTR1 in Cut Tape format are electrically equivalent to their Bulk counterparts. Selection depends on assembly process requirements and inventory management.

Q: Can Vishay K103M15X7RF53L2 be used as a direct replacement?

A: The Vishay part matches electrical specifications and maintains X7R temperature coefficient and 50V rating. Lead spacing is 0.098" (2.50mm) compared to 0.100" (2.54mm) on the KYOCERA part. Physical dimensions differ slightly. PCB layout compatibility must be verified before substitution.

Q: What tolerance improvement is available?

A: The original SR155C103MAT specifies ±20% tolerance. Substitute parts SR155C103KAA, SR155C103KAR, and all SR151 series parts offer ±10% or ±5% tolerance, providing tighter capacitance control for applications requiring improved accuracy.

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