0603J1000331MXT Equivalent & Substitute Parts

Part Overview

The 0603J1000331MXT is a 330 pF ±20% 100V ceramic capacitor manufactured by Knowles Syfer in 0603 (1608 Metric) surface mount package. This X7R temperature coefficient component is designed for general purpose applications requiring stable capacitance across the -55°C to 125°C operating range. The part is ROHS3 compliant with MSL 1 rating and is currently active in production. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, or meet specific application requirements for tolerance, voltage rating, or temperature coefficient specifications.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±20%
Voltage Rating	100V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.063" L x 0.031" W (1.60mm x 0.80mm)
Thickness (Max)	0.031" (0.80mm)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters: capacitance value (330 pF), package type (0603/1608 Metric), mounting method (Surface Mount MLCC), operating temperature range (-55°C to 125°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99). Substitute parts are grouped into three categories based on manufacturer recommendation status and electrical parameter variations:

MFR Recommended Substitutes maintain identical capacitance, voltage rating, and package specifications while offering improved tolerance (±1% or ±5%) or alternative temperature coefficients (C0G/NP0) from the original manufacturer Knowles Syfer.

Upgrade Substitutes provide equivalent or enhanced electrical performance from alternative manufacturers (KEMET, YAGEO, KYOCERA AVX) with identical or higher voltage ratings, tighter tolerances, and X7R temperature coefficient matching the original specification.

Legacy/Alternative Substitutes include parts from TDK Corporation marked as "Not For New Designs" but remain electrically compatible for existing applications requiring C0G/NP0 temperature coefficient with 100V or 250V ratings.

All substitute parts maintain identical package dimensions, surface mount compatibility, and environmental compliance ratings as the primary part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Product Status
0603J1000331MXT	Knowles Syfer	330 pF	±20%	100V	X7R	0603 (1608 Metric)	0.031" (0.80mm)	Active
0603J1000331FCT	Knowles Syfer	330 pF	±1%	100V	C0G, NP0 (1B)	0603 (1608 Metric)	0.031" (0.80mm)	Active
0603J1000331JCT	Knowles Syfer	330 pF	±5%	100V	C0G, NP0 (1B)	0603 (1608 Metric)	0.031" (0.80mm)	Active
C0603C331K1RAC7867	KEMET	330 pF	±10%	100V	X7R	0603 (1608 Metric)	0.034" (0.87mm)	Active
C0603C331K2RAC7867	KEMET	330 pF	±10%	200V	X7R	0603 (1608 Metric)	0.034" (0.87mm)	Active
CC0603KRX7R0BB331	YAGEO	330 pF	±10%	100V	X7R	0603 (1608 Metric)	0.035" (0.90mm)	Active
KGM15AR72A331JT	KYOCERA AVX	330 pF	±5%	100V	X7R	0603 (1608 Metric)	0.035" (0.90mm)	Active
C0603C331J1GAC7867	KEMET	330 pF	±5%	100V	C0G, NP0	0603 (1608 Metric)	0.034" (0.87mm)	Active
C0603C331JAGAC7867	KEMET	330 pF	±5%	250V	C0G, NP0	0603 (1608 Metric)	0.034" (0.87mm)	Active
C1608C0G2A331K080AA	TDK Corporation	330 pF	±10%	100V	C0G, NP0	0603 (1608 Metric)	0.035" (0.90mm)	Not For New Designs
C1608C0G2E331K080AA	TDK Corporation	330 pF	±10%	250V	C0G, NP0	0603 (1608 Metric)	0.035" (0.90mm)	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (X7R Temperature Coefficient): Select C0603C331K1RAC7867 (KEMET) or CC0603KRX7R0BB331 (YAGEO) when X7R temperature coefficient performance is required. Both parts maintain 100V rating, 330 pF capacitance, and 0603 package compatibility. KEMET part offers tighter thickness tolerance (0.034" vs 0.035"), while YAGEO provides higher inventory availability.

For Enhanced Tolerance Requirements: Choose KGM15AR72A331JT (KYOCERA AVX) for ±5% tolerance with X7R coefficient, or 0603J1000331JCT (Knowles Syfer) for ±5% tolerance with C0G/NP0 coefficient. The Knowles Syfer option maintains original manufacturer continuity.

For Improved Stability (C0G/NP0 Temperature Coefficient): Select 0603J1000331FCT (Knowles Syfer, ±1%) for maximum capacitance stability, or C0603C331J1GAC7867 (KEMET, ±5%) for alternative manufacturer sourcing. Both provide superior temperature coefficient performance compared to X7R.

For Elevated Voltage Applications: Use C0603C331K2RAC7867 (KEMET, 200V) or C0603C331JAGAC7867 (KEMET, 250V) when circuit requirements exceed 100V rating. These parts maintain 330 pF capacitance and 0603 package while providing voltage margin.

For Legacy System Support: TDK parts C1608C0G2A331K080AA (100V) and C1608C0G2E331K080AA (250V) remain available but are marked "Not For New Designs." Use only for existing production or maintenance applications.

All recommended substitutes are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating matching the original part.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0603J1000331MXT with a part having different tolerance?

A: Yes. Tolerance differences do not affect package compatibility or mounting. Select based on circuit accuracy requirements. ±1% tolerance (0603J1000331FCT) provides tighter capacitance control; ±10% tolerance parts (KEMET, YAGEO, KYOCERA AVX) offer cost optimization for general purpose applications.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients?

A: X7R provides ±15% capacitance variation across -55°C to 125°C operating range, suitable for bypass and decoupling. C0G/NP0 provides ±30 ppm/°C stability, suitable for precision timing and filtering circuits. Select based on application sensitivity to temperature-induced capacitance drift.

Q: Are all substitute parts physically interchangeable?

A: All parts use identical 0603 (1608 Metric) package and surface mount configuration. Maximum thickness varies between 0.031" and 0.035" depending on manufacturer. Verify PCB clearance for parts with 0.035" thickness if original design used 0.031" maximum.

Q: Can I use a 200V or 250V rated part in place of the 100V original?

A: Yes. Higher voltage ratings provide design margin and are electrically compatible in 100V circuits. C0603C331K2RAC7867 (200V) and C0603C331JAGAC7867 (250V) are direct substitutes with no functional degradation. Verify PCB layout accommodates slightly increased thickness (0.034" to 0.035").

Q: Which substitute offers the best inventory availability?

A: KEMET C0603C331K1RAC7867 (102,053 pcs) and YAGEO CC0603KRX7R0BB331 (27,730 pcs) provide highest stock levels. Knowles Syfer 0603J1000331MXT maintains 847 pcs original inventory.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed parts carry ROHS3 compliance, REACH unaffected status, and EAR99 export classification. MSL 1 rating applies to all parts, indicating unlimited shelf life under controlled storage.

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