ECJ-1VC1H181J Equivalent & Substitute Parts

Part Overview

The ECJ-1VC1H181J is a 180 pF ±5% 50V ceramic capacitor in C0G/NP0 temperature coefficient, 0603 (1608 Metric) package, manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications (capacitance, voltage rating, tolerance, temperature coefficient) and mechanical compatibility (package size, mounting type) to ensure direct replacement without circuit redesign.

Key Parameters

Parameter	Value
Capacitance	180 pF
Tolerance	±5%
Voltage Rating	50V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C ~ 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Equivalent Specifications) Parts meeting all key parameters: 180 pF capacitance, ±5% tolerance, 50V voltage rating, C0G/NP0 temperature coefficient, 0603 package, and MSL 1 rating. These parts are electrically and mechanically interchangeable with the ECJ-1VC1H181J without circuit modification.

Upgrade Substitute (Enhanced Tolerance) Parts with tighter tolerance specifications (±1% instead of ±5%) at the same voltage and capacitance. These provide improved precision for applications requiring tighter component tolerances while maintaining full backward compatibility.

Non-Equivalent Part (Higher Voltage Rating) KGM15ACG2A181JT operates at 100V rating instead of 50V. While mechanically compatible, this part is not a direct substitute due to different voltage specification and should only be used when circuit design permits higher voltage components.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	RoHS Status
ECJ-1VC1H181J	Panasonic	180 pF	±5%	50V	C0G/NP0	0603	Obsolete	Not specified
06035A181JAJ2A	KYOCERA AVX	180 pF	±5%	50V	C0G/NP0	0603	Active	Non-compliant
0603N181J500CT	Walsin Technology	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
C0603C181J5GAC7867	KEMET	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
C1608NP01H181J080AA	TDK Corporation	180 pF	±5%	50V	C0G/NP0	0603	Last Time Buy	ROHS3 Compliant
KGM15ACG1H181JM	KYOCERA AVX	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
KGM15ACG1H181JT	KYOCERA AVX	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
KGM15ACG2A181JT	KYOCERA AVX	180 pF	±5%	100V	C0G/NP0	0603	Active	ROHS3 Compliant
VJ0603A181JXACW1BC	Vishay Vitramon	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
VJ0603A181JXAPW1BC	Vishay Vitramon	180 pF	±5%	50V	C0G/NP0	0603	Active	ROHS3 Compliant
06035A181FA12A	KYOCERA AVX	180 pF	±1%	50V	C0G/NP0	0603	Active	Non-compliant

Engineering Selection Recommendations

For Active Production (RoHS3 Compliant) 0603N181J500CT (Walsin Technology), C0603C181J5GAC7867 (KEMET), KGM15ACG1H181JT (KYOCERA AVX), VJ0603A181JXACW1BC (Vishay Vitramon), and VJ0603A181JXAPW1BC (Vishay Vitramon) are all active products with ROHS3 compliance and REACH unaffected status. These parts are suitable for new designs and ongoing production requiring regulatory compliance.

For Legacy System Maintenance C1608NP01H181J080AA (TDK Corporation) is classified as Last Time Buy with ROHS3 compliance. This part remains available for existing system support but should not be selected for new designs.

For Enhanced Tolerance Requirements 06035A181FA12A (KYOCERA AVX) provides ±1% tolerance specification while maintaining 50V rating and 0603 package compatibility. This upgrade substitute is suitable for applications requiring tighter capacitance tolerance than the standard ±5%.

For Higher Voltage Applications KGM15ACG2A181JT (KYOCERA AVX) operates at 100V rating. This part is mechanically and electrically compatible with the 0603 package but is not a direct substitute for 50V-rated circuits. Use only when circuit design permits higher voltage components.

Avoid for New Designs 06035A181JAJ2A (KYOCERA AVX) is RoHS non-compliant and REACH affected. This part should not be selected for new production designs subject to regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use KGM15ACG2A181JT (100V) as a direct replacement for ECJ-1VC1H181J (50V)? A: KGM15ACG2A181JT is mechanically compatible (0603 package, 180 pF, ±5%, C0G/NP0) but operates at 100V instead of 50V. It is not a direct substitute. Use only if your circuit design permits higher voltage components. The higher voltage rating does not affect capacitance or temperature coefficient performance.

Q: What is the difference between KGM15ACG1H181JM and KGM15ACG1H181JT? A: Both parts are identical in electrical specifications (180 pF, ±5%, 50V, C0G/NP0, 0603 package, ROHS3 compliant). The difference is packaging: KGM15ACG1H181JM is supplied in Tape & Reel (TR) format, while KGM15ACG1H181JT is also Tape & Reel. Both are active products suitable for production use.

Q: Are Vishay Vitramon VJ0603A181JXACW1BC and VJ0603A181JXAPW1BC interchangeable? A: Yes. Both parts share identical electrical specifications (180 pF, ±5%, 50V, C0G/NP0) and mechanical compatibility (0603 package, ROHS3 compliant). Both are active products. The part number suffix indicates internal design variations that do not affect electrical performance or substitutability.

Q: Should I use 06035A181FA12A for general-purpose applications? A: 06035A181FA12A offers ±1% tolerance instead of ±5%, providing tighter capacitance accuracy. This upgrade substitute is suitable for applications requiring precision capacitance values. However, it is RoHS non-compliant, making it unsuitable for designs subject to regulatory requirements. For compliant alternatives with standard ±5% tolerance, use ROHS3-compliant parts listed above.

Q: What is MSL 1 (Unlimited) and why does it matter? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture baking requirements. All listed substitute parts maintain MSL 1 rating, ensuring consistent handling and storage procedures with the original ECJ-1VC1H181J.

Q: Can I mix different manufacturers' parts in the same circuit board? A: Yes. All listed direct substitutes (0603N181J500CT, C0603C181J5GAC7867, KGM15ACG1H181JT, VJ0603A181JXACW1BC, VJ0603A181JXAPW1BC) meet identical electrical and mechanical specifications. Mixing manufacturers is acceptable for production flexibility and supply chain continuity, provided all parts maintain the same capacitance, voltage, tolerance, and package specifications.

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