1812PC474MAT1A Ceramic Capacitor Equivalent & Substitute Parts

Part Overview

The 1812PC474MAT1A is a 0.47 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 250V with X7R temperature coefficient and 1812 (4532 metric) package form factor. This surface mount multilayer ceramic capacitor (MLCC) is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection. Substitute parts are identified when electrical parameters (capacitance, voltage rating, temperature coefficient) and mechanical specifications (package, dimensions) remain compatible with the original design requirements.

Key Parameters

Parameter	Value
Capacitance	0.47 µF
Tolerance	±20%
Voltage Rating	250V
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 1812PC474MAT1A is determined by strict equivalence in the following parameters:

Capacitance value: 0.47 µF (exact match required)
Voltage rating: 250V (equal or higher acceptable)
Temperature coefficient: X7R (required for stable performance across operating range)
Package: 1812 (4532 metric) (mechanical compatibility required)
Mounting type: Surface Mount, MLCC (assembly compatibility required)

Tolerance variations (±5%, ±10%, ±20%) are permitted as they represent tighter or equivalent specifications. Thickness variations within the 1812 package envelope are acceptable provided they do not exceed assembly constraints. Substitute parts are categorized as upgrades when tolerance is improved (tighter specification) or direct equivalents when tolerance matches or is looser.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Thickness (Max)	Product Status	Inventory
1812PC474MAT1A	KYOCERA AVX	0.47 µF	±20%	250V	X7R	0.100" (2.54mm)	Active	924 Pcs
1812PC474KAT1A	KYOCERA AVX	0.47 µF	±10%	250V	X7R	0.079" (2.00mm)	Active	2380 Pcs
1812PC474KAT2A	KYOCERA AVX	0.47 µF	±10%	250V	X7R	0.079" (2.00mm)	Active	11460 Pcs
C1812C474MARAC7800	KEMET	0.47 µF	±20%	250V	X7R	0.073" (1.85mm)	Active	3192 Pcs
C4532X7R2E474M230KA	TDK Corporation	0.47 µF	±20%	250V	X7R	0.098" (2.50mm)	Not For New Designs	1892 Pcs
CC1812MKX7RYBB474	YAGEO	0.47 µF	±20%	250V	X7R	0.071" (1.80mm)	Active	7033 Pcs
QMK432B7474MM-T	Taiyo Yuden	0.47 µF	±20%	250V	X7R	0.106" (2.70mm)	Not For New Designs	1779 Pcs
C1812C474JARAC7800	KEMET	0.47 µF	±5%	250V	X7R	0.073" (1.85mm)	Active	1820 Pcs
C1812C474KARAC7800	KEMET	0.47 µF	±10%	250V	X7R	0.073" (1.85mm)	Active	13162 Pcs
C4532X7R2E474K230KA	TDK Corporation	0.47 µF	±10%	250V	X7R	0.098" (2.50mm)	Active	179423 Pcs
C4532X7R2E474K230KM	TDK Corporation	0.47 µF	±10%	250V	X7R	0.098" (2.50mm)	Not For New Designs	1996 Pcs

Engineering Selection Recommendations

Direct equivalents with ±20% tolerance matching the original 1812PC474MAT1A specification include C1812C474MARAC7800 (KEMET) and CC1812MKX7RYBB474 (YAGEO), both with Active product status and ROHS3 compliance. These parts maintain identical electrical performance within the original tolerance band.

Upgraded alternatives with tighter ±10% tolerance include 1812PC474KAT1A and 1812PC474KAT2A from KYOCERA AVX, C1812C474KARAC7800 from KEMET, and C4532X7R2E474K230KA from TDK Corporation. These upgrades provide improved capacitance accuracy while maintaining Active product status and full compliance certifications. The 1812PC474KAT2A variant offers the highest inventory availability (11,460 pcs) among ±10% tolerance options.

The highest tolerance upgrade (±5%) is available through C1812C474JARAC7800 (KEMET), suitable for applications requiring maximum capacitance stability. All recommended active parts are ROHS3 compliant with MSL 1 rating.

Parts designated "Not For New Designs" (C4532X7R2E474M230KA, QMK432B7474MM-T, C4532X7R2E474K230KM) are electrically compatible but should not be selected for new circuit designs due to manufacturer lifecycle status.

Frequently Asked Questions (FAQ)

Q: Can I substitute 1812PC474MAT1A with a part having ±10% tolerance?

A: Yes. Parts with ±10% tolerance (1812PC474KAT1A, 1812PC474KAT2A, C1812C474KARAC7800, C4532X7R2E474K230KA) are direct upgrades, providing tighter capacitance accuracy while maintaining all other electrical and mechanical specifications.

Q: Are thickness variations between substitute parts significant?

A: Thickness variations within the 1812 package envelope (ranging from 0.071" to 0.106" maximum) are acceptable for surface mount assembly. Verify that the thinnest substitute (CC1812MKX7RYBB474 at 0.071") and thickest option (QMK432B7474MM-T at 0.106") fit within your PCB assembly clearances and reflow profile constraints.

Q: What is the difference between packaging options (Tape & Reel vs. Cut Tape)?

A: Tape & Reel (TR) packaging is standard for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging from TDK (C4532X7R2E474K230KA) and YAGEO (CC1812MKX7RYBB474) offers flexibility for lower-volume or mixed-component orders. Both are compatible with standard pick-and-place equipment.

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

A: Parts with this designation (C4532X7R2E474M230KA, QMK432B7474MM-T, C4532X7R2E474K230KM) are electrically and mechanically equivalent but are in end-of-life phases. They remain available for replacement or repair of existing assemblies but should not be specified for new product development.

Q: Can I use a 250V rated capacitor in a circuit designed for lower voltage?

A: Yes. A 250V rated capacitor is suitable for any application rated at 250V or below. The voltage rating represents the maximum safe operating voltage; using a higher-rated component provides additional safety margin.

Q: Which substitute offers the best inventory availability?

A: C4532X7R2E474K230KA (TDK Corporation) with ±10% tolerance offers the highest inventory level at 179,423 pcs, combined with Active product status and ROHS3 compliance, making it suitable for high-volume production requirements.

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