CK06BX103K Equivalent & Substitute Parts Reference

Part Overview

The CK06BX103K is a 10000 pF ceramic capacitor rated at 200V with BX temperature coefficient, manufactured by Cornell Dubilier Electronics (CDE) as part of the Military MIL-C-11015 CK06 series. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The part features radial through-hole mounting with formed leads and operates across the temperature range of -55°C to 125°C. Due to its obsolete status, equivalent substitutes from active manufacturers are required to maintain design continuity and ensure supply chain reliability.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Voltage Rating	200V
Tolerance	±10%
Temperature Coefficient	BX
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.200" (5.08mm)
Lead Style	Formed Leads

Substitute Part Grouping Explanation

Substitution of the CK06BX103K is determined by strict equivalence of the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Capacitance value: 10000 pF (exact match required)
Voltage rating: 200V minimum (higher ratings acceptable for derating applications)
Tolerance: ±10% (tighter tolerances acceptable)
Mounting type: Through Hole radial configuration
Lead spacing: 0.200" (5.08mm) pitch
Operating temperature range: -55°C to 125°C minimum

Temperature Coefficient Consideration: The original BX temperature coefficient is a military-grade specification. Active substitutes employ C0G/NP0 or X7R temperature coefficients, which provide superior stability and are standard in modern ceramic capacitor manufacturing. Both C0G/NP0 and X7R dielectrics meet or exceed the temperature stability requirements of the BX specification across the -55°C to 125°C operating range.

Voltage Rating Flexibility: Substitute parts rated at 250V, 500V, or 630V are functionally equivalent for 200V applications, as higher voltage ratings provide additional safety margin and derating capability.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Size (L x W)	Height Max	Product Status	RoHS Status
CK06BX103K	CDE	10000 pF	200V	±10%	BX	0.290" x 0.090"	0.290"	Obsolete	Non-compliant
C322C103K2G5TA	KEMET	10000 pF	200V	±10%	C0G/NP0	0.200" x 0.125"	0.260"	Active	ROHS3 Compliant
C322C103K2R5TA	KEMET	10000 pF	200V	±10%	X7R	0.200" x 0.125"	0.260"	Active	ROHS3 Compliant
C322C103KAG5TA	KEMET	10000 pF	250V	±10%	C0G/NP0	0.200" x 0.125"	0.260"	Active	ROHS3 Compliant
C322C103KBR5TA	KEMET	10000 pF	630V	±10%	X7R	0.200" x 0.150"	0.260"	Active	ROHS3 Compliant
C323C103K2G5TA	KEMET	10000 pF	200V	±10%	C0G/NP0	0.200" x 0.125"	0.300"	Active	ROHS3 Compliant
C323C103KAG5TA	KEMET	10000 pF	250V	±10%	C0G/NP0	0.200" x 0.125"	0.300"	Active	ROHS3 Compliant
C323C103KCR5TA	KEMET	10000 pF	500V	±10%	X7R	0.200" x 0.200"	0.300"	Active	ROHS3 Compliant
C328C103J2G5TA	KEMET	10000 pF	200V	±5%	C0G/NP0	0.200" x 0.125"	0.300"	Active	ROHS3 Compliant
C328C103JAG5TA	KEMET	10000 pF	250V	±5%	C0G/NP0	0.200" x 0.125"	0.300"	Active	ROHS3 Compliant
C328C103K2G5TA	KEMET	10000 pF	200V	±10%	C0G/NP0	0.200" x 0.125"	0.300"	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Electrical Equivalents at 200V):

The following parts provide direct electrical substitution with identical capacitance, voltage rating, and tolerance specifications:

C322C103K2G5TA (KEMET GoldMax 300 Comm C0G): Active status, ROHS3 compliant, C0G/NP0 dielectric with low ESL characteristics. Compact footprint (0.260" height) suitable for space-constrained applications.
C322C103K2R5TA (KEMET GoldMax 300 Comm X7R): Active status, ROHS3 compliant, X7R dielectric providing broader temperature stability. Identical electrical specifications to CK06BX103K.
C323C103K2G5TA (KEMET GoldMax 300 Comm C0G): Active status, ROHS3 compliant, C0G/NP0 dielectric. Slightly taller profile (0.300" height) with identical electrical performance.
C328C103K2G5TA (KEMET GoldMax 300 Comm C0G): Active status, ROHS3 compliant, C0G/NP0 dielectric with ±10% tolerance. Tighter tolerance variant available as C328C103J2G5TA (±5%).

Secondary Substitutes (Higher Voltage Ratings for Derating):

C322C103KAG5TA (250V rating): Provides 25% voltage derating margin for enhanced reliability in marginal voltage conditions.
C323C103KAG5TA (250V rating): Taller profile variant with 25% voltage derating capability.
C323C103KCR5TA (500V rating): X7R dielectric with 150% voltage derating margin for high-reliability applications. Larger footprint (0.200" x 0.200").
C322C103KBR5TA (630V rating): Extreme voltage derating (215% margin) for specialized high-reliability military or aerospace applications. Widest footprint (0.200" x 0.150").

Compliance Considerations:

All KEMET substitutes are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements. The original CK06BX103K is RoHS non-compliant, making active substitutes mandatory for new designs and updated production runs.

Frequently Asked Questions (FAQ)

Q: Can C322C103K2G5TA directly replace CK06BX103K in existing PCB layouts?

A: C322C103K2G5TA provides electrical equivalence but has different physical dimensions. The original CK06BX103K measures 0.290" L x 0.090" W with 0.290" height, while C322C103K2G5TA measures 0.200" L x 0.125" W with 0.260" height. PCB footprint verification is required. The lead spacing remains identical at 0.200" (5.08mm), but the body dimensions differ, potentially affecting board layout compatibility.

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

A: Both C0G/NP0 and X7R dielectrics meet the -55°C to 125°C operating range of the original BX specification. C0G/NP0 provides superior temperature stability with minimal capacitance variation across temperature extremes, suitable for precision timing and filtering applications. X7R offers broader temperature stability with slightly higher capacitance variation, appropriate for general-purpose filtering and coupling applications. Both are functionally equivalent for the CK06BX103K application.

Q: Why do some substitutes have higher voltage ratings (250V, 500V, 630V)?

A: Higher voltage ratings provide derating margin, improving component reliability and lifespan in 200V applications. A 250V-rated capacitor operating at 200V provides 20% voltage derating. A 500V-rated capacitor provides 150% derating. Higher voltage ratings typically result in larger physical dimensions and may not fit existing PCB layouts without modification.

Q: Are KEMET GoldMax 300 series capacitors suitable for military applications?

A: KEMET GoldMax 300 series capacitors are active commercial-grade components with ROHS3 compliance. The original CK06BX103K is a military-grade MIL-C-11015 component. For military or aerospace applications requiring MIL-spec certification, alternative military-qualified suppliers should be consulted. For commercial and industrial applications, GoldMax 300 series substitutes provide equivalent electrical performance with modern compliance certifications.

Q: What is the inventory availability of these substitutes?

A: Current inventory levels are: C322C103K2G5TA (817 pcs), C322C103K2R5TA (1400 pcs), C322C103KAG5TA (960 pcs), C322C103KBR5TA (854 pcs), C323C103K2G5TA (939 pcs), C323C103KAG5TA (766 pcs), C323C103KCR5TA (2917 pcs), C328C103J2G5TA (658 pcs), C328C103JAG5TA (932 pcs), C328C103K2G5TA (910 pcs). All substitutes are active production items with continuous availability.

Q: Can tolerance differences affect circuit performance?

A: The original CK06BX103K specifies ±10% tolerance. Most substitutes maintain ±10% tolerance. Tighter tolerance variants (±5%) are available as C328C103J2G5TA and C328C103JAG5TA. Tighter tolerances improve circuit predictability in precision applications but are not required for general-purpose filtering and coupling functions. Circuit design margins should accommodate ±10% capacitance variation.

Q: What is the lead spacing requirement for PCB compatibility?

A: All listed substitutes maintain 0.200" (5.08mm) lead spacing, identical to the original CK06BX103K. This ensures compatibility with existing PCB hole patterns. However, body dimensions vary between parts, requiring verification of available board space before substitution.

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