0603J0500331MXT Equivalent & Substitute Parts

Part Overview

The 0603J0500331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated for 50V with X7R temperature coefficient in 0603 (1608 Metric) surface mount package. This part is Active status and widely used in general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. Equivalent and substitute parts are identified based on matching capacitance value, package size, and electrical ratings, with allowances for improved voltage ratings, tighter tolerances, or alternative temperature coefficients where circuit requirements permit.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±20%
Voltage Rating	50V
Temperature Coefficient	X7R
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 0603J0500331MXT is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 330 pF (exact match required)
Package: 0603 (1608 Metric) surface mount (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variations:

Voltage Rating: Equal to or greater than 50V
Tolerance: Equal to or tighter than ±20%
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)
RoHS Compliance: ROHS3 Compliant or RoHS non-compliant (both acceptable)

Substitute parts are grouped by voltage rating and temperature coefficient to facilitate selection based on circuit requirements and design margins.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	RoHS Status	Inventory
0603J0500331MXT	Knowles Syfer	330 pF	±20%	50V	X7R	0603	ROHS3	803
0603J1000331FCT	Knowles Syfer	330 pF	±1%	100V	C0G/NP0	0603	ROHS3	8890
0603J1000331JCT	Knowles Syfer	330 pF	±5%	100V	C0G/NP0	0603	ROHS3	8839
KGM15AR71H331MT	KYOCERA AVX	330 pF	±20%	50V	X7R	0603	ROHS3	769
C0603C331J5RAC7867	KEMET	330 pF	±5%	50V	X7R	0603	ROHS3	1560
C0603C331K1RAC7867	KEMET	330 pF	±10%	100V	X7R	0603	ROHS3	102053
C0603C331K2RAC7867	KEMET	330 pF	±10%	200V	X7R	0603	ROHS3	11124
C0603C331K5RAL7867	KEMET	330 pF	±10%	50V	X7R	0603	RoHS non-compliant	934
CC0603JRX7R9BB331	YAGEO	330 pF	±5%	50V	X7R	0603	ROHS3	10083
CC0603KRX7R0BB331	YAGEO	330 pF	±10%	100V	X7R	0603	ROHS3	27730
CC0603KRX7R9BB331	YAGEO	330 pF	±10%	50V	X7R	0603	ROHS3	57272

Engineering Selection Recommendations

Direct Equivalents (50V X7R, ±20% Tolerance): KGM15AR71H331MT (KYOCERA AVX) provides direct electrical and mechanical equivalence to the 0603J0500331MXT with identical voltage, temperature coefficient, and tolerance specifications. Both parts are ROHS3 compliant and suitable for direct substitution in existing designs.

Improved Tolerance Alternatives (50V X7R): C0603C331J5RAC7867 (KEMET) and CC0603JRX7R9BB331 (YAGEO) offer tighter ±5% tolerance while maintaining 50V rating and X7R temperature coefficient. These parts are ROHS3 compliant and appropriate for applications requiring improved capacitance stability.

C0603C331K5RAL7867 (KEMET) provides ±10% tolerance at 50V X7R but is RoHS non-compliant. Selection of this part requires verification of end-product RoHS requirements.

CC0603KRX7R9BB331 (YAGEO) offers ±10% tolerance at 50V X7R in Cut Tape and Digi-Reel packaging with high inventory availability (57,272 pcs).

Higher Voltage Alternatives (100V and 200V): C0603C331K1RAC7867 (KEMET) and CC0603KRX7R0BB331 (YAGEO) provide 100V rating with X7R temperature coefficient, suitable for designs requiring increased voltage margin. Both are ROHS3 compliant.

C0603C331K2RAC7867 (KEMET) extends voltage rating to 200V with X7R temperature coefficient for applications requiring maximum voltage headroom.

C0G/NP0 Temperature Coefficient Alternatives (100V): 0603J1000331FCT (Knowles Syfer) and 0603J1000331JCT (Knowles Syfer) provide C0G/NP0 temperature coefficient at 100V rating. C0G/NP0 offers superior temperature stability compared to X7R. The FCT variant specifies ±1% tolerance; the JCT variant specifies ±5% tolerance. Both are ROHS3 compliant.

All substitute parts maintain identical operating temperature range (-55°C ~ 125°C), moisture sensitivity level (1 - Unlimited), and surface mount 0603 package configuration.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0603J0500331MXT with a higher voltage rated part? A: Yes. Parts rated for 100V or 200V are electrically compatible substitutes. Higher voltage ratings provide increased design margin and do not affect circuit operation at 50V or below. Physical dimensions remain identical within the 0603 package family.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R temperature coefficient specifies ±15% capacitance change across the -55°C to 125°C operating range. C0G/NP0 specifies ±30 ppm/°C, resulting in significantly lower capacitance drift. C0G/NP0 is preferred for precision timing and filtering applications; X7R is suitable for general purpose bypass and decoupling.

Q: Are tighter tolerance parts (±5% or ±10%) direct replacements? A: Yes. Tighter tolerance parts are direct replacements. They provide improved capacitance accuracy without affecting mechanical fit or electrical performance. Tolerance tightness does not impact circuit compatibility.

Q: Does RoHS compliance status affect substitution? A: RoHS compliance is a regulatory and supply chain consideration, not an electrical parameter. ROHS3 compliant parts are preferred for new designs and products destined for regulated markets. RoHS non-compliant parts remain electrically equivalent but may not be acceptable for end-product certification.

Q: Can I use Cut Tape (CT) packaging instead of Tape & Reel (TR)? A: Packaging format affects procurement and handling but not electrical or mechanical performance. Cut Tape and Digi-Reel formats are suitable for lower-volume applications or manual assembly. Tape & Reel format is standard for high-volume automated assembly.

Q: What inventory considerations apply to substitute selection? A: Inventory levels vary significantly across manufacturers and part numbers. CC0603KRX7R9BB331 (YAGEO) offers the highest inventory (57,272 pcs), while KGM15AR71H331MT (KYOCERA AVX) offers the lowest (769 pcs). Inventory availability may influence lead time and cost for procurement planning.

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