K181J10C0GF53L2 Equivalent & Substitute Parts

Part Overview

The K181J10C0GF53L2 is a 180 pF ceramic capacitor rated at 50V with C0G/NP0 temperature coefficient, manufactured by Vishay Beyschlag/Draloric/BC Components in the Mono-Kap™ K series. This radial through-hole component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are necessary when the primary part is unavailable, when lead spacing or physical dimensions must accommodate specific PCB layouts, or when alternative manufacturers are preferred for supply chain optimization.

Key Parameters

Parameter	Value
Capacitance	180 pF
Tolerance	±5%
Voltage - Rated	50V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.098" (2.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the K181J10C0GF53L2 is determined by strict equivalence in the following electrical parameters: capacitance value (180 pF), tolerance (±5%), rated voltage (50V), and temperature coefficient (C0G/NP0). All substitute parts must maintain the same operating temperature range (-55°C to 125°C) and mounting technology (through-hole radial). Mechanical compatibility is evaluated based on lead spacing, as this parameter directly affects PCB footprint compatibility. Parts with identical lead spacing (0.098" / 2.50mm) are direct substitutes. Parts with different lead spacing (0.197" / 5.00mm) require PCB layout verification but remain electrically equivalent. Physical dimensions including body length, width, and seated height may vary between manufacturers while maintaining functional equivalence, provided the lead spacing accommodates the existing PCB design.

Parameter Comparison

Parameter	K181J10C0GF53L2 (Vishay)	FK18C0G1H181JN020 (TDK)	FK28C0G1H181JN000 (TDK)	RDE5C1H181J0P1H03B (Murata)	SR155A181JAR (KYOCERA AVX)
Capacitance	180 pF	180 pF	180 pF	180 pF	180 pF
Tolerance	±5%	±5%	±5%	±5%	±5%
Voltage - Rated	50V	50V	50V	50V	50V
Temperature Coefficient	C0G, NP0	C0G, NP0	C0G, NP0	C0G, NP0	C0G, NP0
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial	Radial
Lead Spacing	0.098" (2.50mm)	0.098" (2.50mm)	0.197" (5.00mm)	0.098" (2.50mm)	0.100" (2.54mm)
Size / Dimension	0.142" L x 0.091" W (3.60mm x 2.30mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.150" L x 0.100" W (3.81mm x 2.54mm)
Height - Seated (Max)	0.205" (5.20mm)	0.217" (5.50mm)	0.217" (5.50mm)	0.236" (6.00mm)	0.150" (3.81mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Not For New Designs	Not For New Designs	Active	Active

Engineering Selection Recommendations

For direct footprint compatibility with existing PCB designs using the K181J10C0GF53L2, select substitute parts with matching lead spacing of 0.098" (2.50mm): FK18C0G1H181JN020, RDE5C1H181J0P1H03B, or SR155A181JAR. The RDE5C1H181J0P1H03B (Murata) and SR155A181JAR (KYOCERA AVX) are preferred for new designs, as both maintain active product status and full ROHS3 compliance. The FK18C0G1H181JN020 and FK28C0G1H181JN000 (both TDK) are marked as "Not For New Designs" and should be used only for legacy system maintenance or when supply constraints require their use. The FK28C0G1H181JN000 features a 0.197" (5.00mm) lead spacing and requires PCB layout modification. The SR155A181JAR offers the lowest seated height at 0.150" (3.81mm), which may be advantageous in space-constrained applications, though its lead spacing of 0.100" (2.54mm) differs slightly from the original specification.

Frequently Asked Questions (FAQ)

Q: Can FK28C0G1H181JN000 be used as a direct replacement for K181J10C0GF53L2?

A: FK28C0G1H181JN000 is electrically equivalent but has a different lead spacing (0.197" vs. 0.098"). It requires PCB layout modification and cannot be used as a direct drop-in replacement without redesign.

Q: What is the difference between C0G and NP0 temperature coefficients?

A: C0G and NP0 designations refer to the same temperature coefficient characteristic. C0G is the EIA standard designation, while NP0 is the IEC standard designation. They are functionally identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—FK18C0G1H181JN020, FK28C0G1H181JN000, RDE5C1H181J0P1H03B, and SR155A181JAR—are ROHS3 compliant and meet the same environmental standards as the original K181J10C0GF53L2.

Q: Which substitute part has the smallest physical footprint?

A: The SR155A181JAR has the lowest seated height at 0.150" (3.81mm) and the smallest body dimensions at 0.150" L x 0.100" W. However, its lead spacing of 0.100" (2.54mm) differs slightly from the original 0.098" (2.50mm).

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

A: Parts marked "Not For New Designs" (FK18C0G1H181JN020 and FK28C0G1H181JN000) indicate that the manufacturer has discontinued active development for these models. They remain available for legacy system support but should not be selected for new product development.

Q: Can I use RDE5C1H181J0P1H03B in place of K181J10C0GF53L2 without any modifications?

A: Yes. The RDE5C1H181J0P1H03B has identical lead spacing (0.098" / 2.50mm), matching electrical specifications, and active product status, making it a direct substitute requiring no PCB modifications.

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