ECJ-0EB1H331K Equivalent & Substitute Parts

Part Overview

The ECJ-0EB1H331K is a 330 pF ±10% 50V ceramic capacitor in X7R temperature coefficient, manufactured by Panasonic Electronic Components in 0402 (1005 Metric) surface mount package. This part is classified as Obsolete, making substitute components necessary for new designs and ongoing production support. The X7R dielectric provides stable capacitance across the -55°C to 125°C operating temperature range with ±10% tolerance, suitable for general-purpose applications including bypass and decoupling circuits.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for ECJ-0EB1H331K is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 330 pF (exact match required)
Voltage Rating: 50V minimum (equal or higher acceptable)
Temperature Coefficient: X7R (maintains capacitance stability across operating range)
Package: 0402 (1005 Metric) (physical and electrical compatibility)
Mounting Type: Surface Mount, MLCC (assembly compatibility)
Operating Temperature: -55°C to 125°C (functional range)

Secondary Considerations:

Tolerance: ±10% or tighter (±5% acceptable as upgrade)
Moisture Sensitivity: MSL 1 (standard for this category)
Physical dimensions: 0.039" L × 0.020" W, thickness ≤0.022"

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary criteria with X7R dielectric) and Upgrade Options (enhanced specifications such as tighter tolerance, higher voltage rating, or improved compliance status).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	RoHS Status
ECJ-0EB1H331K	Panasonic	330 pF	±10%	50V	X7R	0402	Obsolete	Not specified
04025C331KAJ2A	KYOCERA AVX	330 pF	±10%	50V	X7R	0402	Active	Non-compliant
GRM155R71H331KA01D	Murata Electronics	330 pF	±10%	50V	X7R	0402	Not For New Designs	ROHS3 Compliant
GRM155R71H331KA01J	Murata Electronics	330 pF	±10%	50V	X7R	0402	Not For New Designs	ROHS3 Compliant
VJ0402Y331KXACW1BC	Vishay Vitramon	330 pF	±10%	50V	X7R	0402	Active	ROHS3 Compliant
AC0402KPX7R9BB331	YAGEO	330 pF	±10%	50V	X7R	0402	Active	Not specified
AC0402KRX7R9BB331	YAGEO	330 pF	±10%	50V	X7R	0402	Active	ROHS3 Compliant
C0402C331J5RAC7867	KEMET	330 pF	±5%	50V	X7R	0402	Active	ROHS3 Compliant
C0402C331J1GAC7867	KEMET	330 pF	±5%	100V	C0G, NP0	0402	Active	ROHS3 Compliant
C0402C331J5GAC7867	KEMET	330 pF	±5%	50V	C0G, NP0	0402	Active	ROHS3 Compliant
C0402C331JAGAC7867	KEMET	330 pF	±5%	250V	C0G, NP0	0402	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (X7R, 50V, ±10% Tolerance):

For applications requiring exact electrical and thermal characteristics matching the ECJ-0EB1H331K, the following active parts provide direct substitution:

VJ0402Y331KXACW1BC (Vishay Vitramon): Active product status with ROHS3 compliance. Recommended for new designs requiring X7R stability and standard tolerance.
04025C331KAJ2A (KYOCERA AVX): Active product status. Note RoHS non-compliance status for applications with regulatory requirements.
AC0402KRX7R9BB331 (YAGEO): Active product with ROHS3 compliance and AEC-Q200 automotive rating. Suitable for automotive and industrial applications.

Upgrade Options (Enhanced Specifications):

C0402C331J5RAC7867 (KEMET): Active product with tighter ±5% tolerance, X7R dielectric, ROHS3 compliant. Provides improved capacitance accuracy for precision circuits.
C0402C331J5GAC7867 (KEMET): Active product with ±5% tolerance and C0G/NP0 dielectric offering superior temperature stability compared to X7R.
C0402C331J1GAC7867 (KEMET): Active product with 100V rating and C0G/NP0 dielectric, providing higher voltage margin and improved stability for demanding applications.
C0402C331JAGAC7867 (KEMET): Active product with 250V rating and C0G/NP0 dielectric for high-voltage circuit protection.

Legacy Status Parts (Not Recommended for New Designs):

GRM155R71H331KA01D and GRM155R71H331KA01J (Murata Electronics): Marked "Not For New Designs" despite ROHS3 compliance. Use only for legacy system maintenance or replacement in existing production lines.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with ±5% tolerance instead of ±10%?

A: Yes. Tighter tolerance (±5%) is electrically compatible and provides improved capacitance accuracy. The substitute will perform within the original circuit requirements while offering enhanced precision.

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

A: X7R provides ±15% capacitance change across -55°C to 125°C. C0G/NP0 provides superior stability with minimal capacitance change across temperature. C0G/NP0 is suitable for precision applications; X7R is adequate for general-purpose bypass and decoupling.

Q: Can I use a 100V or 250V rated part in place of the 50V original?

A: Yes. Higher voltage ratings are electrically compatible and provide additional safety margin. Physical dimensions may vary slightly; verify package thickness (max 0.024" for 250V variants) against PCB assembly constraints.

Q: Are all substitute parts RoHS compliant?

A: Most active substitutes are ROHS3 compliant. KYOCERA AVX 04025C331KAJ2A is marked RoHS non-compliant. Verify compliance requirements for your application before selection.

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 indicates the component requires no special moisture control during storage or handling. All listed parts carry MSL 1 rating, eliminating moisture-related assembly concerns.

Q: Which substitute is best for automotive applications?

A: AC0402KRX7R9BB331 (YAGEO) carries AEC-Q200 automotive qualification. For non-automotive general-purpose use, VJ0402Y331KXACW1BC (Vishay) or C0402C331J5RAC7867 (KEMET) are suitable active alternatives.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All listed substitutes meet identical electrical specifications (330 pF, 50V, X7R, 0402 package). Mixing manufacturers is acceptable from an electrical standpoint; verify procurement and supply chain requirements.

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