12103C474KAT9A Equivalent & Substitute Parts

Part Overview

The 12103C474KAT9A is a 0.47 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 25V with X7R temperature coefficient in 1210 (3225 Metric) surface mount package. This part is Active and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the 1210 package footprint, allowing direct board-level replacement without design modification.

Key Parameters

Parameter	Value
Capacitance	0.47 µF
Tolerance	±10%
Voltage Rating	25V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 125°C
Package / Case	1210 (3225 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution validity is determined by the following criteria:

Direct Substitutes (Same Electrical Specifications): Parts with identical capacitance (0.47 µF), tolerance (±10%), voltage rating (25V), temperature coefficient (X7R), and 1210 package footprint are electrically and mechanically interchangeable. Physical dimensions and thickness variations within the 1210 envelope do not affect circuit performance or PCB assembly compatibility.

Upgrade Substitutes (Higher Voltage Rating): Parts rated for 50V or 100V with identical capacitance, tolerance, and X7R coefficient provide enhanced voltage margin while maintaining the same 1210 footprint. These are suitable for applications where the original 25V specification permits higher-rated components.

Tolerance Improvement Substitutes: Parts with ±5% tolerance offer tighter capacitance control compared to the ±10% specification, suitable for precision applications requiring improved stability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Product Status	RoHS Status
12103C474KAT9A	KYOCERA AVX	0.47 µF	±10%	25V	X7R	1210	0.050" (1.27mm)	Active	ROHS3
KGM32ER71E474JU	KYOCERA AVX	0.47 µF	±5%	25V	X7R	1210	0.057" (1.45mm)	Active	ROHS3
KGM32ER71H474JU	KYOCERA AVX	0.47 µF	±5%	50V	X7R	1210	0.057" (1.45mm)	Active	ROHS3
C1210C474K3RAC7800	KEMET	0.47 µF	±10%	25V	X7R	1210	0.041" (1.05mm)	Active	ROHS3
C3225X7R1H474K160AM	TDK Corporation	0.47 µF	±10%	50V	X7R	1210	0.071" (1.80mm)	Active	ROHS3
CC1210KKX7R8BB474	YAGEO	0.47 µF	±10%	25V	X7R	1210	0.045" (1.15mm)	Active	ROHS3
C1210C474K1RAC7800	KEMET	0.47 µF	±10%	100V	X7R	1210	0.041" (1.05mm)	Active	ROHS3
C1210C474K5RAC7800	KEMET	0.47 µF	±10%	50V	X7R	1210	0.041" (1.05mm)	Active	ROHS3
CL32B474KBFNNNE	Samsung Electro-Mechanics	0.47 µF	±10%	50V	X7R	1210	0.057" (1.45mm)	Active	ROHS3
GRM32MR72A474KA01L	Murata Electronics	0.47 µF	±10%	100V	X7R	1210	0.049" (1.25mm)	Not For New Designs	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): C1210C474K3RAC7800 (KEMET) and CC1210KKX7R8BB474 (YAGEO) are electrically identical to the main part with matching 25V rating and ±10% tolerance. Both are Active status and ROHS3 compliant. The KEMET part offers lower profile (0.041" thickness) suitable for space-constrained layouts.

For Improved Tolerance: KGM32ER71E474JU (KYOCERA AVX) provides ±5% tolerance at 25V rating, maintaining the same manufacturer as the original part while offering tighter capacitance control for precision applications.

For Voltage Margin Enhancement: C1210C474K5RAC7800 (KEMET) and CL32B474KBFNNNE (Samsung Electro-Mechanics) both provide 50V rating with ±10% tolerance and Active status. C1210C474K1RAC7800 (KEMET) and KGM32ER71H474JU (KYOCERA AVX) offer 100V rating for applications requiring maximum voltage headroom.

Avoid for New Designs: GRM32MR72A474KA01L (Murata Electronics) carries "Not For New Designs" status and should not be selected for new applications despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 50V-rated capacitor in place of the 25V original part? A: Yes. Higher voltage-rated capacitors with identical capacitance, tolerance, and X7R coefficient are electrically compatible. The 1210 package footprint remains unchanged, allowing direct PCB substitution.

Q: What is the significance of tolerance differences (±10% vs ±5%)? A: Tolerance defines the acceptable capacitance variation from the nominal value. ±5% tolerance provides tighter control suitable for precision filtering or timing circuits. ±10% tolerance is acceptable for general-purpose bypass and decoupling applications. Both are interchangeable at the board level.

Q: Are thickness variations within the 1210 package critical? A: No. All listed parts conform to the 1210 (3225 Metric) package specification. Thickness variations (0.041" to 0.071") remain within the standard envelope and do not affect PCB assembly, soldering, or electrical performance.

Q: Why is GRM32MR72A474KA01L marked "Not For New Designs"? A: This designation indicates the manufacturer has discontinued active development for this part. While electrically compatible, it should not be selected for new product designs due to potential future availability constraints.

Q: Are all listed substitutes ROHS3 compliant? A: Yes. All parts in this reference carry ROHS3 Compliant status and Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and reliability standards.

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