1812CC473MATME Equivalent & Substitute Parts

Part Overview

The 1812CC473MATME is a 0.047 µF ceramic capacitor rated for 630V with X7R temperature coefficient, manufactured by KYOCERA AVX in 1812 (4532 Metric) surface mount package. This high-voltage multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across operating temperatures from -55°C to 125°C. The part is currently active and ROHS3 compliant with MSL 1 rating.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements allow for upgraded specifications, or when alternative manufacturers' components meet or exceed the original specifications while maintaining form factor and electrical compatibility.

Key Parameters

Parameter	Value
Capacitance	0.047 µF
Voltage Rating	630V
Tolerance	±20%
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 1812CC473MATME is determined by the following mandatory parameters:

Capacitance: Must be 0.047 µF (no deviation)
Package / Case: Must be 1812 (4532 Metric) for mechanical and electrical compatibility
Temperature Coefficient: Must be X7R to maintain stable performance across the operating temperature range
Mounting Type: Must be Surface Mount, MLCC
Voltage Rating: Must be equal to or greater than 630V
Tolerance: May be equal to or tighter than ±20%
RoHS / Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (630V Rating): Parts with identical voltage rating and tighter or equal tolerance specifications.

Category 2 - Upgraded Equivalents (1000V Rating): Parts with higher voltage rating (1000V / 1kV) that provide enhanced performance margin while maintaining all other critical parameters. These are electrically and mechanically compatible and represent performance upgrades.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Product Status	Inventory
1812CC473MATME	KYOCERA AVX	0.047 µF	±20%	630V	X7R	1812 (4532 Metric)	Active	1003 Pcs
1812CC473KAT1A	KYOCERA AVX	0.047 µF	±10%	630V	X7R	1812 (4532 Metric)	Active	1183 Pcs
SMK432B7473MM-T	Taiyo Yuden	0.047 µF	±20%	630V	X7R	1812 (4532 Metric)	Not For New Designs	2042 Pcs
SMK432B7473KM-T	Taiyo Yuden	0.047 µF	±10%	630V	X7R	1812 (4532 Metric)	Not For New Designs	1387 Pcs
C1812C473KDRAC7800	KEMET	0.047 µF	±10%	1000V (1kV)	X7R	1812 (4532 Metric)	Active	40113 Pcs
GRM43DR73A473KW01L	Murata Electronics	0.047 µF	±10%	1000V (1kV)	X7R	1812 (4532 Metric)	Active	20400 Pcs

Engineering Selection Recommendations

For Active Production Programs: 1812CC473KAT1A (KYOCERA AVX) is the primary substitute. It maintains the same manufacturer and package while offering tighter tolerance (±10% versus ±20%) and active product status. This part is recommended for new designs requiring the same voltage specification.

For Upgraded Performance Requirements: C1812C473KDRAC7800 (KEMET) or GRM43DR73A473KW01L (Murata Electronics) are suitable when higher voltage margin is acceptable. Both parts are active products with ±10% tolerance, 1000V rating, and full ROHS3 compliance. These upgrades provide enhanced reliability in high-voltage applications.

For Legacy System Maintenance: SMK432B7473MM-T (Taiyo Yuden) provides direct electrical equivalence with ±20% tolerance and 630V rating. However, this part carries "Not For New Designs" status and should be used only for repair or replacement of existing assemblies where the original specification must be maintained.

Compliance Verification: All listed substitutes maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can I use a 1000V rated capacitor in place of the 630V original?

A: Yes. The 1000V-rated parts (C1812C473KDRAC7800 and GRM43DR73A473KW01L) are electrically and mechanically compatible. Higher voltage rating provides additional safety margin and does not degrade performance in 630V applications.

Q: What is the difference between ±20% and ±10% tolerance?

A: Tolerance specifies the allowable deviation from the nominal 0.047 µF value. ±20% allows deviation from 0.0376 µF to 0.0564 µF, while ±10% restricts deviation to 0.0423 µF to 0.0517 µF. Tighter tolerance (±10%) is suitable for applications requiring more precise capacitance values.

Q: Are the physical dimensions identical across all substitute parts?

A: All parts use the 1812 (4532 Metric) package. Length and width are standardized at 4.60mm × 3.20mm (0.181" × 0.126"). Thickness varies slightly: KYOCERA AVX and Murata parts measure 1.80mm to 2.20mm, while Taiyo Yuden parts measure 2.70mm. Verify PCB layout clearance for Taiyo Yuden variants.

Q: Why are some parts marked "Not For New Designs"?

A: Taiyo Yuden SMK432B series parts carry this designation indicating the manufacturer is phasing out these products. They remain available for existing system support but should not be specified for new product development.

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

A: Yes. All listed substitutes meet identical electrical specifications (0.047 µF, X7R, 630V or higher, ±10% or ±20% tolerance) and use the same 1812 package. They are interchangeable from electrical and mechanical perspectives.

Q: What does MSL 1 rating mean?

A: Moisture Sensitivity Level 1 indicates unlimited shelf life without moisture control. These parts do not require special dry-pack storage or baking procedures before soldering, simplifying inventory and assembly logistics.

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