KYOCERA AVX 1812AC472MAT3A Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 1812AC472MAT3A is a 4700 pF ceramic capacitor rated for 1000V (1kV) with X7R temperature coefficient in 1812 (4532 Metric) surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the allowed parameter ranges for this capacitor category.

Key Parameters

Parameter	Value
Capacitance	4700 pF
Tolerance	±20%
Voltage Rating	1000V (1kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 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 for the 1812AC472MAT3A is determined by the following criteria:

Primary Compatibility Parameters:

Capacitance value: 4700 pF (exact match required)
Temperature coefficient: X7R (exact match required)
Package / Case: 1812 (4532 Metric) (exact match required)
Mounting type: Surface Mount, MLCC (exact match required)
Operating temperature range: -55°C ~ 125°C (exact match required)

Allowable Variation Parameters:

Tolerance: ±10% or ±20% (tighter tolerance acceptable)
Voltage rating: 1000V or higher (higher voltage acceptable for same package)
Manufacturer: KYOCERA AVX, KEMET, or TDK Corporation (all ROHS3 compliant)
Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (format variation acceptable)

Substitutes are grouped by voltage rating and tolerance to reflect the electrical performance envelope within which the 1812AC472MAT3A operates.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	RoHS Status
1812AC472MAT3A	KYOCERA AVX	4700 pF	±20%	1000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	ROHS3 Compliant
1812AC472KAT1A	KYOCERA AVX	4700 pF	±10%	1000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	ROHS3 Compliant
C1812C472KDRAC7800	KEMET	4700 pF	±10%	1000V	X7R	1812 (4532 Metric)	0.061" (1.55mm)	ROHS3 Compliant
C4532X7R3A472K160KA	TDK Corporation	4700 pF	±10%	1000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	ROHS3 Compliant
1812GC472MAT1A	KYOCERA AVX	4700 pF	±20%	2000V	X7R	1812 (4532 Metric)	0.087" (2.20mm)	ROHS3 Compliant
1812GC472KAT1A	KYOCERA AVX	4700 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.087" (2.20mm)	ROHS3 Compliant
KGM43FR73D472KV	KYOCERA AVX	4700 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.087" (2.21mm)	ROHS3 Compliant

Engineering Selection Recommendations

Same Voltage Rating (1000V) Substitutes:

1812AC472KAT1A and C1812C472KDRAC7800 are direct electrical substitutes with tighter ±10% tolerance. Both maintain 1000V rating and X7R temperature coefficient. All three 1000V options are ROHS3 compliant with Active product status. C1812C472KDRAC7800 offers reduced thickness (0.061" vs 0.071"), which may provide board layout advantages in space-constrained applications.

C4532X7R3A472K160KA (TDK Corporation) is electrically equivalent at 1000V with ±10% tolerance and matches the 0.071" thickness of the original part.

Higher Voltage Rating (2000V) Substitutes:

1812GC472MAT1A, 1812GC472KAT1A, and KGM43FR73D472KV provide 2000V rating while maintaining 4700 pF capacitance and X7R coefficient. These parts are suitable for applications requiring higher voltage margin. All are ROHS3 compliant with Active status. Thickness increases to 0.087" (2.20mm or 2.21mm), which must be verified against PCB assembly constraints.

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity and are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can I use a 2000V rated capacitor in place of the 1000V 1812AC472MAT3A?

A: Yes. Higher voltage rating is acceptable for direct substitution. The 2000V parts (1812GC472MAT1A, 1812GC472KAT1A, KGM43FR73D472KV) maintain identical capacitance, temperature coefficient, and package dimensions. However, thickness increases from 0.071" to 0.087", which must be confirmed compatible with your PCB assembly profile and clearance requirements.

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

A: Tolerance specifies the allowable deviation from the nominal 4700 pF value. ±20% allows 3760–5640 pF; ±10% allows 4230–5170 pF. Tighter ±10% tolerance parts (1812AC472KAT1A, C1812C472KDRAC7800, C4532X7R3A472K160KA, 1812GC472KAT1A, KGM43FR73D472KV) provide more precise capacitance for applications requiring stricter circuit performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH Unaffected, matching the environmental compliance of the original 1812AC472MAT3A.

Q: Does package format (Tape & Reel vs Cut Tape) affect electrical performance?

A: No. Packaging format affects handling and assembly logistics only. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats contain identical components with identical electrical specifications.

Q: Can I substitute across manufacturers (KYOCERA AVX to KEMET or TDK)?

A: Yes. C1812C472KDRAC7800 (KEMET) and C4532X7R3A472K160KA (TDK Corporation) are electrically and mechanically equivalent at 1000V rating. All manufacturers' parts are ROHS3 compliant with identical operating temperature range and moisture sensitivity level.

Q: What is the impact of reduced thickness in C1812C472KDRAC7800?

A: C1812C472KDRAC7800 has 0.061" (1.55mm) thickness versus 0.071" (1.80mm) for the original part. This thinner profile may provide advantages in high-density PCB layouts but must be verified against reflow profile specifications and component placement constraints.

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