0603J0630331MXT Equivalent & Substitute Parts

Part Overview

The 0603J0630331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated for 63V with X7R temperature coefficient in 0603 (1608 Metric) surface mount package. This part is Active status and widely used in general purpose applications. Substitute parts are identified to provide design flexibility, accommodate supply chain variations, or meet specific performance requirements such as higher voltage ratings, improved tolerance specifications, or alternative temperature coefficients.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±20%
Voltage Rating	63V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Size	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 Compatibility Parameters:

Capacitance: 330 pF (exact match required)
Package / Case: 0603 (1608 Metric) (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)
Operating Temperature Range: -55°C to 125°C minimum (equal or extended range acceptable)
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level: 1 (Unlimited) (required)

Allowable Variation Parameters:

Voltage Rating: 63V or higher (higher voltage provides design margin)
Tolerance: ±20% or tighter (tighter tolerance acceptable)
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)
Thickness: Up to 0.035" (0.90mm) acceptable within 0603 package constraints

Substitute parts are grouped by manufacturer recommendation status (MFR Recommended or Upgrade) and organized by temperature coefficient type to facilitate selection based on application requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Status
0603J0630331MXT	Knowles Syfer	330 pF	±20%	63V	X7R	0603	0.031" (0.80mm)	Active
0603J1000331FCT	Knowles Syfer	330 pF	±1%	100V	C0G/NP0	0603	0.031" (0.80mm)	Active
0603J1000331JCT	Knowles Syfer	330 pF	±5%	100V	C0G/NP0	0603	0.031" (0.80mm)	Active
C0603C331K1RAC7867	KEMET	330 pF	±10%	100V	X7R	0603	0.034" (0.87mm)	Active
CC0603KRX7R0BB331	YAGEO	330 pF	±10%	100V	X7R	0603	0.035" (0.90mm)	Active
KGM15AR72A331JT	KYOCERA AVX	330 pF	±5%	100V	X7R	0603	0.035" (0.90mm)	Active
C0603C331J1GAC7867	KEMET	330 pF	±5%	100V	C0G/NP0	0603	0.034" (0.87mm)	Active
C1608C0G2A331K080AA	TDK Corporation	330 pF	±10%	100V	C0G/NP0	0603	0.035" (0.90mm)	Not For New Designs
C1608NP02A331J080AA	TDK Corporation	330 pF	±5%	100V	C0G/NP0	0603	0.035" (0.90mm)	Active
KGM15ACG2A331FT	KYOCERA AVX	330 pF	±1%	100V	C0G/NP0	0603	0.035" (0.90mm)	Active
KGM15ACG2A331KT	KYOCERA AVX	330 pF	±10%	100V	C0G/NP0	0603	0.035" (0.90mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Characteristics): Select from MFR Recommended parts with matching or superior voltage ratings and tolerance specifications. Parts 0603J1000331FCT and 0603J1000331JCT from Knowles Syfer maintain manufacturer continuity while providing 100V rating and improved tolerance (±1% and ±5% respectively).

For Upgraded Performance (Higher Voltage, Tighter Tolerance): Parts with 100V rating provide additional design margin over the original 63V specification. KEMET C0603C331K1RAC7867 and KYOCERA AVX KGM15AR72A331JT maintain X7R temperature coefficient while offering 100V and ±10% or ±5% tolerance respectively.

For Precision Applications (C0G/NP0 Temperature Coefficient): C0G/NP0 temperature coefficient provides superior stability across temperature range compared to X7R. KEMET C0603C331J1GAC7867, TDK C1608NP02A331J080AA, and KYOCERA AVX KGM15ACG2A331FT and KGM15ACG2A331KT offer C0G/NP0 with 100V rating and tolerance from ±1% to ±10%.

Compliance and Status Considerations: All recommended substitutes are ROHS3 Compliant and MSL 1 (Unlimited). Avoid C1608C0G2A331K080AA (TDK) which carries "Not For New Designs" status. All other listed parts maintain Active product status.

Frequently Asked Questions (FAQ)

Q: Can I use a 100V rated capacitor in place of the 63V original? A: Yes. Higher voltage rating provides design margin and is electrically compatible. The capacitor will function correctly in circuits designed for 63V operation.

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 superior stability with minimal capacitance change across temperature. C0G/NP0 is preferred for precision timing and filtering circuits; X7R is suitable for general purpose bypass and decoupling applications.

Q: Are tighter tolerance parts (±1%, ±5%) direct substitutes for ±20% tolerance? A: Yes. Tighter tolerance parts are fully compatible and provide improved capacitance accuracy. They are suitable for applications requiring precise capacitance values.

Q: Does package thickness variation affect PCB assembly? A: All listed parts use 0603 (1608 Metric) package with thickness ranging from 0.031" to 0.035". These variations are within standard 0603 package specifications and do not affect PCB assembly or reflow processes.

Q: Can I mix manufacturers in the same circuit? A: Yes. All listed parts meet identical electrical specifications, package dimensions, and compliance requirements. Mixing manufacturers is acceptable from an electrical and mechanical standpoint.

Q: Why is C1608C0G2A331K080AA marked "Not For New Designs"? A: This TDK part carries legacy status. While electrically compatible, it should not be selected for new circuit designs. Use active status alternatives instead.

Q: What packaging options are available? A: Most parts are supplied in Tape & Reel (TR) format. KGM15ACG2A331FT is available in Cut Tape (CT) & Digi-Reel® format. Verify packaging availability with supplier for production requirements.

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