KYOCERA AVX 1808AC102KAT9A Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 1808AC102KAT9A is a 1000 pF ±10% 1000V (1kV) ceramic capacitor with X7R temperature coefficient in 1808 (4520 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 ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and carries Active product status. Equivalent and substitute parts are identified based on matching or exceeding electrical specifications while maintaining mechanical compatibility with the 1808 package footprint.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±10%
Voltage Rating	1000V (1kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1808 (4520 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 1808AC102KAT9A is determined by the following criteria:

Direct Equivalents maintain identical electrical specifications (1000 pF, ±10%, 1000V, X7R) with the same 1808 package footprint. These parts are interchangeable without circuit redesign.

Upgrade Substitutes increase the voltage rating (1500V, 2000V, 2500V, or 3000V) while maintaining 1000 pF capacitance, ±10% tolerance, X7R temperature coefficient, and 1808 package compatibility. These parts provide enhanced voltage margin and are pin-compatible replacements suitable for applications requiring higher voltage headroom.

Cross-Manufacturer Direct Equivalents from TDK Corporation and Johanson Dielectrics Inc. match the 1000 pF, ±10%, 1000V, X7R specifications with 1808 package footprint, offering alternative sourcing from qualified manufacturers.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and Active product status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Size (L x W)	Thickness (Max)	Series	Inventory Status
1808AC102KAT9A	KYOCERA AVX	1000 pF	±10%	1000V	X7R	1808	4.60mm x 2.00mm	1.80mm	—	770 Pcs
1808AC102KAT1A	KYOCERA AVX	1000 pF	±10%	1000V	X7R	1808	4.60mm x 2.00mm	1.80mm	—	2140 Pcs
1808SC102KAT1A	KYOCERA AVX	1000 pF	±10%	1500V	X7R	1808	4.60mm x 2.00mm	1.80mm	—	5443 Pcs
1808GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1808	4.60mm x 2.00mm	2.20mm	—	3294 Pcs
1808WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	1808	4.60mm x 2.00mm	2.20mm	—	2200 Pcs
1808HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1808	4.60mm x 2.00mm	2.20mm	—	4597 Pcs
KGM42CR73D102KY	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1808	4.60mm x 2.00mm	2.21mm	KGM - HV	9025 Pcs
KGM42CR73U102KY	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1808	4.60mm x 2.00mm	2.21mm	KGM - HV	5700 Pcs
C4520X7R3A102K130KA	TDK Corporation	1000 pF	±10%	1000V	X7R	1808	4.50mm x 2.00mm	1.50mm	C	4880 Pcs
C4520X7R3D102K130KA	TDK Corporation	1000 pF	±10%	2000V	X7R	1808	4.50mm x 2.00mm	1.50mm	C	95140 Pcs
VPDP102W102K1GV001E	Johanson Dielectrics Inc.	1000 pF	±10%	1000V	X7R	1808	4.70mm x 2.03mm	2.16mm	HVS-PME	4493 Pcs

Engineering Selection Recommendations

Direct Equivalent Selection (1808AC102KAT1A): The KYOCERA AVX 1808AC102KAT1A is a direct equivalent with identical electrical and mechanical specifications. This part is preferred when packaging format (Tape & Reel) matches assembly requirements and inventory availability is adequate (2140 Pcs in stock).

Voltage Upgrade Selection: Parts with increased voltage ratings (1808SC102KAT1A at 1500V, 1808GC102KAT1A at 2000V, 1808WC102KAT1A at 2500V, 1808HC102KAT1A at 3000V) are suitable substitutes when circuit design permits higher voltage components. These upgrades maintain identical capacitance and tolerance while providing enhanced voltage margin. Note that 2000V and higher ratings exhibit increased thickness (2.20mm vs. 1.80mm), requiring PCB layout verification for clearance.

Cross-Manufacturer Equivalents: TDK Corporation C4520X7R3A102K130KA and Johanson Dielectrics Inc. VPDP102W102K1GV001E provide alternative sourcing for 1000V, 1000 pF specifications. Both maintain ROHS3 compliance and MSL 1 rating. TDK part exhibits reduced thickness (1.50mm), while Johanson part is specified for SMPS filtering applications.

High-Voltage Series Selection: KYOCERA AVX KGM series (KGM42CR73D102KY at 2000V, KGM42CR73U102KY at 3000V) offers dedicated high-voltage performance with enhanced inventory availability (9025 Pcs and 5700 Pcs respectively).

All recommended substitutes maintain Active product status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can 1808AC102KAT1A directly replace 1808AC102KAT9A? A: Yes. Both parts are identical in electrical specifications (1000 pF, ±10%, 1000V, X7R) and mechanical package (1808). The difference is packaging format: 1808AC102KAT9A uses standard packaging while 1808AC102KAT1A is supplied in Tape & Reel format. Electrical performance is equivalent.

Q: What is the difference between 1000V and 2000V rated parts in the 1808 package? A: Both maintain 1000 pF capacitance and ±10% tolerance. The 2000V rated parts (1808GC102KAT1A, C4520X7R3D102K130KA, KGM42CR73D102KY) provide double the voltage margin. KYOCERA AVX 2000V parts increase thickness from 1.80mm to 2.20mm, requiring PCB layout verification. TDK 2000V part maintains 1.50mm thickness.

Q: Are TDK and Johanson parts compatible with KYOCERA AVX footprints? A: Yes, for electrical function. All parts use the 1808 (4520 Metric) package with identical capacitance, tolerance, and temperature coefficient. Minor dimensional variations exist: TDK measures 4.50mm x 2.00mm (1.50mm thick), Johanson measures 4.70mm x 2.03mm (2.16mm thick), and KYOCERA AVX measures 4.60mm x 2.00mm (1.80mm or 2.20mm thick depending on voltage rating). Verify PCB pad layout and clearance before substitution.

Q: Which substitute offers the best inventory availability? A: TDK Corporation C4520X7R3D102K130KA (2000V rating) has the highest inventory at 95,140 Pcs. For equivalent 1000V specifications, KYOCERA AVX 1808AC102KAT1A offers 2,140 Pcs.

Q: Can I use a 3000V rated part in a 1000V circuit? A: Yes. Higher voltage-rated capacitors are suitable for lower voltage applications. Parts rated 3000V (1808HC102KAT1A, KGM42CR73U102KY) operate safely at 1000V with increased voltage margin. Verify PCB clearance, as 3000V parts are thicker (2.20mm or 2.21mm).

Q: What is the MSL rating and why does it matter? A: All listed parts carry MSL 1 (Unlimited), meaning they have unlimited shelf life and require no special moisture control during storage or handling. This simplifies supply chain management and assembly processes.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All parts listed maintain ROHS3 compliance, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limits.

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