Equivalent & Substitute Parts for 0603J0250331MXT

Part Overview

The 0603J0250331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated at 25V with X7R temperature coefficient in 0603 (1608 Metric) surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same package footprint and capacitance value, with allowable variations in voltage rating, tolerance, and temperature coefficient within standard industrial parameters.

Key Parameters

Parameter	Value
Capacitance	330 pF
Voltage Rating	25V
Tolerance	±20%
Temperature Coefficient	X7R
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature Range	-55°C ~ 125°C
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)
Thickness (Max)	0.031" (0.80mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Requirements:

Capacitance: 330 pF (exact match)
Package / Case: 0603 (1608 Metric) (exact match)
Mounting Type: Surface Mount, MLCC (exact match)
Operating Temperature Range: -55°C ~ 125°C (exact match)
Moisture Sensitivity Level: 1 (Unlimited) (exact match)

Allowable Variations:

Voltage Rating: Equal to or greater than 25V
Tolerance: ±1%, ±5%, ±10%, or ±20%
Temperature Coefficient: X7R or C0G/NP0 (1B)
Thickness: Up to 0.035" (0.90mm)
RoHS Status: ROHS3 Compliant or RoHS non-compliant (functional equivalence maintained)

Substitute parts are grouped by voltage rating upgrade level and tolerance specification, reflecting design margin improvements while maintaining footprint and thermal performance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Temperature Coefficient	Package	Thickness (Max)	RoHS Status
0603J0250331MXT	Knowles Syfer	330 pF	25V	±20%	X7R	0603 (1608 Metric)	0.031" (0.80mm)	ROHS3 Compliant
0603J1000331FCT	Knowles Syfer	330 pF	100V	±1%	C0G, NP0 (1B)	0603 (1608 Metric)	0.031" (0.80mm)	ROHS3 Compliant
0603J1000331JCT	Knowles Syfer	330 pF	100V	±5%	C0G, NP0 (1B)	0603 (1608 Metric)	0.031" (0.80mm)	ROHS3 Compliant
KGM15AR71E331MT	KYOCERA AVX	330 pF	25V	±20%	X7R	0603 (1608 Metric)	0.035" (0.90mm)	ROHS3 Compliant
C0603C331J5RAC7867	KEMET	330 pF	50V	±5%	X7R	0603 (1608 Metric)	0.034" (0.87mm)	ROHS3 Compliant
C0603C331K1RAC7867	KEMET	330 pF	100V	±10%	X7R	0603 (1608 Metric)	0.034" (0.87mm)	ROHS3 Compliant
C0603C331K3RAC7867	KEMET	330 pF	25V	±10%	X7R	0603 (1608 Metric)	0.034" (0.87mm)	ROHS3 Compliant
C0603C331K5RAL7867	KEMET	330 pF	50V	±10%	X7R	0603 (1608 Metric)	0.034" (0.87mm)	RoHS non-compliant
CC0603JRX7R9BB331	YAGEO	330 pF	50V	±5%	X7R	0603 (1608 Metric)	0.035" (0.90mm)	ROHS3 Compliant
CC0603KRX7R0BB331	YAGEO	330 pF	100V	±10%	X7R	0603 (1608 Metric)	0.035" (0.90mm)	ROHS3 Compliant
CC0603KRX7R8BB331	YAGEO	330 pF	25V	±10%	X7R	0603 (1608 Metric)	0.035" (0.90mm)	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Same Voltage Rating - 25V): KGM15AR71E331MT (KYOCERA AVX) and CC0603KRX7R8BB331 (YAGEO) maintain the 25V rating with identical capacitance and X7R temperature coefficient. KGM15AR71E331MT matches the ±20% tolerance specification. CC0603KRX7R8BB331 provides ±10% tolerance with improved accuracy. Both are ROHS3 compliant and mechanically compatible within the 0603 footprint.

Voltage Upgrade Options (50V Rating): C0603C331J5RAC7867 (KEMET) and CC0603JRX7R9BB331 (YAGEO) provide 50V rating with ±5% tolerance, offering increased design margin. Both maintain X7R temperature coefficient and ROHS3 compliance. Thickness specifications (0.034" and 0.035" respectively) remain within acceptable PCB assembly parameters.

High Voltage Upgrade Options (100V Rating): 0603J1000331FCT and 0603J1000331JCT (Knowles Syfer) provide 100V rating with C0G/NP0 temperature coefficient, delivering superior voltage margin and temperature stability. C0603C331K1RAC7867 (KEMET) and CC0603KRX7R0BB331 (YAGEO) provide 100V rating with X7R temperature coefficient, maintaining consistency with the original part's thermal characteristics.

Compliance Considerations: All recommended substitutes are ROHS3 compliant except C0603C331K5RAL7867 (KEMET), which is RoHS non-compliant. Selection should align with end-product regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating than the original 0603J0250331MXT? A: Yes. Higher voltage ratings (50V or 100V) are functionally compatible and provide increased design margin. The 330 pF capacitance and 0603 package footprint remain unchanged. Verify circuit design does not require the specific voltage derating characteristics of the original 25V part.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance change across -55°C to 125°C operating range. C0G/NP0 provides ±30 ppm/°C, delivering superior temperature stability. Both are suitable for general purpose and bypass/decoupling applications. Selection depends on circuit tolerance requirements.

Q: Are tolerance variations (±1%, ±5%, ±10%, ±20%) interchangeable? A: Tighter tolerances (±1%, ±5%, ±10%) are functionally compatible with ±20% specifications. Tighter tolerance parts provide improved capacitance accuracy. Circuit design must accommodate the original ±20% tolerance specification; tighter tolerance substitutes do not require design changes.

Q: Does thickness variation affect PCB assembly compatibility? A: The original part specifies 0.031" (0.80mm) maximum thickness. Substitute parts with up to 0.035" (0.90mm) thickness remain compatible with standard 0603 PCB assembly processes. Verify with assembly partner if height-constrained applications exist.

Q: Can I substitute a ROHS3 compliant part with a RoHS non-compliant part? A: RoHS non-compliant parts (such as C0603C331K5RAL7867) are functionally equivalent but do not meet ROHS3 regulatory requirements. Selection depends on end-product regulatory compliance obligations. Verify customer and regional requirements before substitution.

Q: Which substitute offers the best balance of voltage margin and tolerance accuracy? A: C0603C331K1RAC7867 (KEMET) and CC0603KRX7R0BB331 (YAGEO) provide 100V rating with ±10% tolerance, delivering both increased voltage design margin and improved capacitance accuracy compared to the original ±20% specification. Both are ROHS3 compliant and mechanically compatible.

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