ECJ-2VB2A681K Equivalent & Substitute Parts

Part Overview

The ECJ-2VB2A681K is a 680 pF ±10% 100V ceramic capacitor in X7R dielectric, 0805 (2012 Metric) surface mount package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production support. The X7R temperature coefficient provides stable capacitance across the -55°C to 125°C operating range, suitable for general-purpose bypass and decoupling applications in consumer and industrial electronics.

Key Parameters

Parameter	Value
Capacitance	680 pF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance value (680 pF), tolerance (±10%), voltage rating (100V minimum), temperature coefficient (X7R), package type (0805), and operating temperature range (-55°C to 125°C). Parts meeting all these criteria are direct functional equivalents. Parts with higher voltage ratings (200V) or different temperature coefficients (C0G/NP0) are listed separately as upgrades or alternatives with modified electrical characteristics.

Parameter Comparison

Manufacturer	Part Number	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	RoHS Status
Panasonic Electronic Components	ECJ-2VB2A681K	680 pF	±10%	100V	X7R	0805	Obsolete	Not specified
KYOCERA AVX	08051C681KAJ2A	680 pF	±10%	100V	X7R	0805	Active	RoHS non-compliant
KEMET	C0805C681K1RAC7800	680 pF	±10%	100V	X7R	0805	Active	ROHS3 Compliant
YAGEO	CC0805KRX7R0BB681	680 pF	±10%	100V	X7R	0805	Active	ROHS3 Compliant
Murata Electronics	GRM2195C2A681JA01D	680 pF	±5%	100V	C0G/NP0	0805	Not For New Designs	ROHS3 Compliant
KYOCERA AVX	KGM21NR72A681KT	680 pF	±10%	100V	X7R	0805	Active	ROHS3 Compliant
KYOCERA AVX	KGM21NR72D681KT	680 pF	±10%	200V	X7R	0805	Active	ROHS3 Compliant
KYOCERA AVX	LD051C681KAB2A	680 pF	±10%	100V	X7R	0805	Active	RoHS non-compliant
Vishay Vitramon	VJ0805Y681KXBCW1BC	680 pF	±10%	100V	X7R	0805	Active	ROHS3 Compliant
Vishay Vitramon	VJ0805Y681KXBPW1BC	680 pF	±10%	100V	X7R	0805	Active	ROHS3 Compliant
KEMET	C0805C681J1GAC7800	680 pF	±5%	100V	C0G/NP0	0805	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (X7R, 100V, ±10% Tolerance)

For applications requiring exact electrical equivalence to the ECJ-2VB2A681K, the following active parts provide direct substitution:

C0805C681K1RAC7800 (KEMET): Active product status with ROHS3 compliance and high inventory availability (10,106 pcs). Suitable for new designs requiring RoHS certification.
CC0805KRX7R0BB681 (YAGEO): Active product with ROHS3 compliance and substantial inventory (6,620 pcs). Thinnest profile at 0.028" (0.70mm).
KGM21NR72A681KT (KYOCERA AVX): Active product with ROHS3 compliance and largest inventory (28,832 pcs). Highest availability for volume production.
VJ0805Y681KXBCW1BC and VJ0805Y681KXBPW1BC (Vishay Vitramon): Active products with ROHS3 compliance. Both available in Tape & Reel packaging.

Alternative with Enhanced Tolerance (C0G/NP0, 100V, ±5% Tolerance)

C0805C681J1GAC7800 (KEMET): Upgrade option with tighter ±5% tolerance and C0G/NP0 temperature coefficient, providing superior frequency and temperature stability. Active product with ROHS3 compliance. Recommended for precision applications where capacitance drift must be minimized.

Higher Voltage Option (X7R, 200V, ±10% Tolerance)

KGM21NR72D681KT (KYOCERA AVX): Rated for 200V operation while maintaining 680 pF capacitance and X7R characteristics. Active product with ROHS3 compliance. Suitable for applications requiring voltage margin or operating in elevated voltage environments.

Non-Compliant Legacy Options

08051C681KAJ2A (KYOCERA AVX) and LD051C681KAB2A (KYOCERA AVX): Both marked RoHS non-compliant. Not recommended for new designs subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can I use C0805C681J1GAC7800 as a direct replacement for ECJ-2VB2A681K?

A: C0805C681J1GAC7800 is functionally compatible but not electrically identical. It features ±5% tolerance and C0G/NP0 temperature coefficient versus the original's ±10% tolerance and X7R coefficient. This provides better stability but may alter circuit performance in applications sensitive to capacitance value. Verify circuit requirements before substitution.

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

A: X7R provides ±15% capacitance change across the -55°C to 125°C range. C0G/NP0 provides ±30 ppm/°C, resulting in minimal capacitance drift. X7R is suitable for general-purpose applications; C0G/NP0 is required for precision timing, filtering, and frequency-critical circuits.

Q: Can I substitute the 200V-rated KGM21NR72D681KT for the 100V ECJ-2VB2A681K?

A: Yes. The 200V part is electrically compatible and provides additional voltage margin. It maintains identical capacitance (680 pF), tolerance (±10%), and temperature coefficient (X7R). Use this part if your circuit operates near 100V or requires design headroom.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Most active substitutes are available in Tape & Reel (TR) packaging suitable for automated assembly. Verify packaging specifications with your supplier, as some parts may be available in alternative formats.

Q: Which substitute offers the best RoHS compliance and availability?

A: KGM21NR72A681KT (KYOCERA AVX) combines ROHS3 compliance with the highest inventory level (28,832 pcs), making it the optimal choice for volume production requiring regulatory certification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message