ECJ-2FB2D103K Equivalent & Substitute Parts

Part Overview

The Panasonic ECJ-2FB2D103K is a 10000 pF ceramic capacitor rated for 200V with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity. Direct replacements are available from multiple active manufacturers with identical electrical specifications and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Tolerance	±10%
Voltage Rating	200V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the ECJ-2FB2D103K is determined by strict equivalence across the following parameters:

Capacitance: 10000 pF (exact match required)
Tolerance: ±10% (direct equivalents) or ±5% (upgrades with improved tolerance)
Voltage Rating: 200V minimum (250V rated parts are upgrades)
Temperature Coefficient: X7R (maintains capacitance stability across operating range)
Package: 0805 (2012 Metric) (identical footprint and land pattern)
Mounting Type: Surface Mount, MLCC (same assembly process)
Moisture Sensitivity: MSL 1 (unlimited shelf life)

Direct equivalents maintain all electrical and mechanical specifications. Upgrade parts offer improved tolerance (±5%) or higher voltage ratings (250V) while maintaining full backward compatibility.

Parameter Comparison

Manufacturer	Part Number	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Product Status	RoHS Status
Panasonic	ECJ-2FB2D103K	10000 pF	±10%	200V	X7R	0805	0.055" (1.40mm)	Obsolete	—
KEMET	C0805C103K2RAC7800	10000 pF	±10%	200V	X7R	0805	0.035" (0.88mm)	Active	ROHS3 Compliant
KEMET	C0805C103K2RAL7800	10000 pF	±10%	200V	X7R	0805	0.035" (0.88mm)	Active	RoHS non-compliant
YAGEO	CC0805KKX7RABB103	10000 pF	±10%	200V	X7R	0805	0.037" (0.95mm)	Active	ROHS3 Compliant
Samsung Electro-Mechanics	CL21B103KDCNNNC	10000 pF	±10%	200V	X7R	0805	0.037" (0.95mm)	Active	ROHS3 Compliant
KYOCERA AVX	KGM21AR72D103KL	10000 pF	±10%	200V	X7R	0805	0.057" (1.45mm)	Active	ROHS3 Compliant
KYOCERA AVX	KGM21AR72D103KU	10000 pF	±10%	200V	X7R	0805	0.057" (1.45mm)	Active	ROHS3 Compliant
Vishay Vitramon	VJ0805Y103KXCMC	10000 pF	±10%	200V	X7R	0805	0.057" (1.45mm)	Active	ROHS3 Compliant
KYOCERA AVX	08052C103JAJ2A	10000 pF	±5%	200V	X7R	0805	0.037" (0.94mm)	Active	RoHS non-compliant
Knowles Syfer	0805J2000103JXT	10000 pF	±5%	200V	X7R	0805	0.051" (1.30mm)	Active	ROHS3 Compliant
Knowles Syfer	0805J2500103JXT	10000 pF	±5%	250V	X7R	0805	0.051" (1.30mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (±10% Tolerance, 200V Rating)

For applications requiring exact specification matching, the following active parts provide direct substitution:

C0805C103K2RAC7800 (KEMET): ROHS3 compliant, thinner profile (0.88mm), high inventory availability
CC0805KKX7RABB103 (YAGEO): ROHS3 compliant, standard thickness (0.95mm)
CL21B103KDCNNNC (Samsung Electro-Mechanics): ROHS3 compliant, standard thickness (0.95mm)
KGM21AR72D103KL or KGM21AR72D103KU (KYOCERA AVX): ROHS3 compliant, thicker profile (1.45mm)
VJ0805Y103KXCMC (Vishay Vitramon): ROHS3 compliant, extended operating temperature to 150°C, thicker profile (1.45mm)

Upgrade Options (±5% Tolerance)

For applications benefiting from tighter tolerance control:

08052C103JAJ2A (KYOCERA AVX): ±5% tolerance, 200V rating, RoHS non-compliant
0805J2000103JXT (Knowles Syfer): ±5% tolerance, 200V rating, ROHS3 compliant

Upgrade Option (250V Rating)

For applications requiring higher voltage margin:

0805J2500103JXT (Knowles Syfer): ±5% tolerance, 250V rating, ROHS3 compliant

All substitute parts maintain MSL 1 rating and identical 0805 package footprint. Selection should prioritize ROHS3 compliance for new designs unless legacy RoHS non-compliant specifications are required.

Frequently Asked Questions (FAQ)

Q: Can I use a 250V rated capacitor in place of the 200V ECJ-2FB2D103K?

A: Yes. The 0805J2500103JXT (Knowles Syfer) provides higher voltage rating while maintaining all other specifications. Higher voltage ratings provide additional safety margin and are electrically compatible with 200V circuit requirements.

Q: What is the difference between ±10% and ±5% tolerance parts?

A: Tolerance defines the allowable deviation from the nominal 10000 pF capacitance value. ±10% allows 9000–11000 pF; ±5% allows 9500–10500 pF. Tighter tolerance (±5%) is beneficial for precision filtering and timing circuits but not required for general-purpose applications.

Q: Are there thickness differences between substitute parts?

A: Yes. Thickness varies from 0.88mm (KEMET C0805C103K2RAC7800) to 1.45mm (KYOCERA AVX KGM series, Vishay VJ0805Y103KXCMC). All fit the 0805 package footprint. Verify PCB clearance if space is constrained.

Q: Which substitute offers the best RoHS compliance?

A: All ROHS3 compliant parts meet current environmental standards. KEMET C0805C103K2RAC7800, YAGEO CC0805KKX7RABB103, Samsung CL21B103KDCNNNC, KYOCERA AVX KGM series, Vishay VJ0805Y103KXCMC, and Knowles Syfer 0805J2000103JXT and 0805J2500103JXT are ROHS3 compliant.

Q: Can I substitute the ECJ-2FB2D103K with a different capacitance value?

A: No. Capacitance is the primary functional parameter. Only 10000 pF parts are substitutes. Different capacitance values require circuit redesign and validation.

Q: Is the ECJ-2FB2D103K still available?

A: The ECJ-2FB2D103K is classified as obsolete. 825 pieces remain in stock from original inventory. For new production, active substitute parts are recommended.

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