ECJ-1VF1H103Z Equivalent & Substitute Parts

Part Overview

The ECJ-1VF1H103Z is a 10000 pF ceramic capacitor rated at 50V with Y5V temperature coefficient in 0603 (1608 Metric) surface mount package, manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design updates. The Y5V temperature coefficient provides -20% to +80% capacitance tolerance across the operating temperature range of -30°C to 85°C, suitable for general-purpose applications where cost-effectiveness is prioritized over strict capacitance stability.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Tolerance	-20%, +80%
Voltage Rating	50V
Temperature Coefficient	Y5V (F)
Operating Temperature Range	-30°C ~ 85°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.063" L x 0.031" W (1.60mm x 0.80mm)
Thickness (Max)	0.035" (0.90mm)
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ECJ-1VF1H103Z are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Electrical & Mechanical Parameters): Parts meeting all critical parameters: 10000 pF capacitance, -20% to +80% tolerance, 50V voltage rating, Y5V temperature coefficient, -30°C to 85°C operating range, and 0603 package form factor. These parts are electrically and mechanically interchangeable without design modification.

Parametric Equivalent (Different Temperature Coefficient): The GCM188R71H103KA37D from Murata Electronics shares identical capacitance, voltage rating, and package but uses X7R temperature coefficient (±10% tolerance, -55°C to 125°C operating range). This part is classified as "Not For New Designs" and represents a functional alternative only when temperature stability requirements differ from the original specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Operating Temperature	Package	Product Status	Inventory (Pcs)
ECJ-1VF1H103Z	Panasonic Electronic Components	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Obsolete	875
C0603C103Z5VAC7867	KEMET	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	973
KGM15AV51H103ZM	KYOCERA AVX	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	1152
KGM15AV51H103ZT	KYOCERA AVX	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	11208
CC0603ZPY5V9BB103	YAGEO	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	1073
CC0603ZRY5V9BB103	YAGEO	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	51758
CL10F103ZB8NNNC	Samsung Electro-Mechanics	10000 pF	-20%, +80%	50V	Y5V (F)	-30°C ~ 85°C	0603 (1608 Metric)	Active	706151
GCM188R71H103KA37D	Murata Electronics	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	0603 (1608 Metric)	Not For New Designs	25200

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select from active-status parts with Y5V temperature coefficient: KGM15AV51H103ZT (KYOCERA AVX), CL10F103ZB8NNNC (Samsung Electro-Mechanics), or CC0603ZRY5V9BB103 (YAGEO). All three are ROHS3 compliant and REACH unaffected. KGM15AV51H103ZT offers the highest inventory availability (11208 pcs), followed by CL10F103ZB8NNNC (706151 pcs). KEMET C0603C103Z5VAC7867 and YAGEO CC0603ZPY5V9BB103 are also active alternatives with lower inventory levels.

For Temperature-Stable Applications: GCM188R71H103KA37D from Murata Electronics provides X7R temperature coefficient with ±10% tolerance and extended operating range (-55°C to 125°C). This part is rated for automotive applications (AEC-Q200) but carries "Not For New Designs" status. Use only when superior temperature stability is required and design constraints permit the tighter tolerance specification.

Compliance Considerations: All active substitute parts are ROHS3 compliant and REACH unaffected. Moisture Sensitivity Level 1 (Unlimited) applies uniformly across all alternatives, eliminating moisture handling as a differentiation factor.

Frequently Asked Questions (FAQ)

Q: Can KGM15AV51H103ZT directly replace ECJ-1VF1H103Z? A: Yes. Both parts share identical electrical specifications (10000 pF, -20% to +80% tolerance, 50V, Y5V temperature coefficient) and mechanical form factor (0603 package). KGM15AV51H103ZT is active production status, making it a direct substitute.

Q: What is the difference between Y5V and X7R temperature coefficients? A: Y5V provides -20% to +80% capacitance variation across -30°C to 85°C operating range. X7R provides ±10% variation across -55°C to 125°C. Y5V is cost-optimized for general-purpose applications; X7R is used where capacitance stability across wider temperature ranges is critical.

Q: Is GCM188R71H103KA37D a suitable replacement? A: GCM188R71H103KA37D is functionally compatible (same capacitance, voltage, package) but differs in temperature coefficient (X7R vs. Y5V) and operating range. It is suitable only if your application requires the extended temperature range and tighter tolerance. The "Not For New Designs" status indicates Murata is phasing this part out.

Q: Which substitute offers the best availability? A: CL10F103ZB8NNNC (Samsung Electro-Mechanics) has the highest inventory at 706151 pcs, followed by CC0603ZRY5V9BB103 (YAGEO) at 51758 pcs and KGM15AV51H103ZT (KYOCERA AVX) at 11208 pcs.

Q: Are all substitutes RoHS compliant? A: All active-status substitute parts are ROHS3 compliant and REACH unaffected. The Murata part (GCM188R71H103KA37D) is also ROHS3 compliant despite its "Not For New Designs" status.

Q: Do physical dimensions vary between substitutes? A: All parts conform to 0603 (1608 Metric) package specification with 0.063" L x 0.031" W footprint. Thickness varies slightly: most parts are 0.035" (0.90mm) maximum; KEMET C0603C103Z5VAC7867 is 0.034" (0.87mm) maximum. These variations are within standard PCB assembly tolerances.

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