CL43B334KCFNNNE Equivalent & Substitute Parts

Part Overview

The CL43B334KCFNNNE is a 0.33 µF ceramic capacitor manufactured by Samsung Electro-Mechanics, rated for 100V with X7R temperature coefficient in 1812 (4532 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) is designed for general purpose applications and is currently in active production status. Substitute parts are identified when original inventory is unavailable or when design requirements permit upgraded electrical specifications while maintaining mechanical compatibility and package footprint.

Key Parameters

Parameter	Value
Capacitance	0.33 µF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.177" L x 0.126" W (4.50mm x 3.20mm)
Thickness (Max)	0.057" (1.45mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CL43B334KCFNNNE is determined by the following criteria:

Direct Parametric Equivalents maintain identical electrical specifications: 0.33 µF capacitance, ±10% tolerance, 100V voltage rating, and X7R temperature coefficient. These parts are interchangeable without circuit redesign.

Upgraded Specifications provide higher voltage ratings (250V) or improved tolerance (±5%) while retaining the same capacitance value, temperature coefficient, and 1812 package footprint. These upgrades are backward compatible in applications where the original 100V rating is specified, as they provide additional design margin.

Mechanical Compatibility is maintained across all substitutes through identical package designation (1812/4532 Metric), surface mount configuration, and compatible physical dimensions. All substitute parts share the same mounting footprint and reflow soldering requirements.

Compliance Alignment ensures all substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, matching the original part's regulatory standing.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	RoHS Status	MSL
CL43B334KCFNNNE	Samsung Electro-Mechanics	0.33 µF	±10%	100V	X7R	1812 (4532 Metric)	0.057" (1.45mm)	ROHS3 Compliant	1
C1812C334K1RAC7800	KEMET	0.33 µF	±10%	100V	X7R	1812 (4532 Metric)	0.065" (1.65mm)	ROHS3 Compliant	1
C1812C334JARAC7800	KEMET	0.33 µF	±5%	250V	X7R	1812 (4532 Metric)	0.065" (1.65mm)	ROHS3 Compliant	1
C1812C334KARAC7800	KEMET	0.33 µF	±10%	250V	X7R	1812 (4532 Metric)	0.065" (1.65mm)	ROHS3 Compliant	1
KGM43BR72A334JV	KYOCERA AVX	0.33 µF	±5%	100V	X7R	1812 (4532 Metric)	0.057" (1.45mm)	ROHS3 Compliant	1
KGM43BR72A334KV	KYOCERA AVX	0.33 µF	±10%	100V	X7R	1812 (4532 Metric)	0.057" (1.45mm)	ROHS3 Compliant	1

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): KGM43BR72A334KV and C1812C334K1RAC7800 provide identical electrical specifications to the CL43B334KCFNNNE. Both parts are active production items with ROHS3 compliance and MSL 1 rating. KGM43BR72A334KV maintains the same maximum thickness (0.057") as the original part, while C1812C334K1RAC7800 has a slightly increased thickness (0.065"). Selection between these options depends on available inventory and PCB assembly clearance requirements.

Upgraded Voltage Rating: C1812C334KARAC7800 and C1812C334JARAC7800 provide 250V rating with the same 0.33 µF capacitance and X7R temperature coefficient. C1812C334KARAC7800 maintains ±10% tolerance matching the original specification, while C1812C334JARAC7800 offers improved ±5% tolerance. Both are suitable for applications where the original 100V specification permits higher voltage margin. Both parts have increased thickness (0.065") compared to the original.

Improved Tolerance at Original Voltage: KGM43BR72A334JV provides ±5% tolerance at 100V rating with identical thickness (0.057") to the original part. This option is suitable when tighter capacitance tolerance is required without voltage rating changes.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can KGM43BR72A334KV be used as a direct replacement for CL43B334KCFNNNE?

A: Yes. KGM43BR72A334KV is a parametric equivalent with identical capacitance (0.33 µF), tolerance (±10%), voltage rating (100V), temperature coefficient (X7R), and package (1812). Both parts share the same maximum thickness (0.057"), ensuring compatibility with existing PCB layouts and assembly processes.

Q: What is the difference between C1812C334K1RAC7800 and C1812C334KARAC7800?

A: C1812C334K1RAC7800 is rated for 100V with ±10% tolerance, matching the original CL43B334KCFNNNE specification. C1812C334KARAC7800 is rated for 250V with ±10% tolerance, providing higher voltage margin. Both have identical capacitance (0.33 µF) and X7R temperature coefficient. The 250V part has increased thickness (0.065" vs 0.065"), which must be verified against PCB assembly clearance.

Q: Can upgraded voltage rating parts be used in circuits designed for 100V?

A: Yes. C1812C334KARAC7800 and C1812C334JARAC7800, both rated for 250V, are backward compatible in 100V applications. Higher voltage ratings provide additional design margin and do not degrade circuit performance when used in lower voltage applications.

Q: What is the significance of the ±5% tolerance option?

A: KGM43BR72A334JV and C1812C334JARAC7800 offer ±5% tolerance compared to the ±10% tolerance of the original part. Tighter tolerance reduces capacitance variation across the production batch, which is beneficial for applications requiring precise capacitance values. Selection depends on circuit requirements and cost considerations.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (C1812C334K1RAC7800, C1812C334JARAC7800, C1812C334KARAC7800, KGM43BR72A334JV, and KGM43BR72A334KV) are ROHS3 compliant with MSL 1 rating and REACH unaffected status, matching the original CL43B334KCFNNNE compliance profile.

Q: Does the increased thickness of KEMET parts affect PCB assembly?

A: KEMET parts (C1812C334K1RAC7800, C1812C334JARAC7800, C1812C334KARAC7800) have maximum thickness of 0.065" compared to 0.057" for Samsung and KYOCERA AVX parts. This 0.008" difference must be verified against PCB assembly clearance specifications, particularly in high-density layouts or applications with height restrictions.

Q: Which substitute part offers the best overall compatibility?

A: KGM43BR72A334KV provides the highest compatibility with the original CL43B334KCFNNNE, maintaining identical electrical specifications (0.33 µF, ±10%, 100V, X7R) and physical dimensions (0.057" maximum thickness). This part requires no design or assembly process changes.

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