CL43B105KBFNNNF Equivalent & Substitute Parts

Part Overview

The CL43B105KBFNNNF is a 1 µF ±10% 50V ceramic capacitor manufactured by Samsung Electro-Mechanics in the 1812 (4532 Metric) package with X7R temperature coefficient. This surface mount multilayer ceramic capacitor (MLCC) is classified as Active product status and is suitable for general purpose applications including bypass and decoupling circuits.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate enhanced specifications such as improved tolerance or higher voltage ratings. The substitute parts listed maintain electrical and mechanical compatibility within the defined parameter ranges.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	1 µF	Must remain constant across all substitutes
Voltage Rating	50V (minimum)	Substitutes at 50V or higher are acceptable
Tolerance	±10% (standard), ±5% (upgrade)	Tighter tolerance upgrades are acceptable
Temperature Coefficient	X7R	Must remain X7R for thermal stability
Package / Case	1812 (4532 Metric)	Must match for PCB layout compatibility
Operating Temperature	-55°C ~ 125°C	Must support full range
Mounting Type	Surface Mount, MLCC	Must be surface mount compatible
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement
Moisture Sensitivity Level	MSL 1 (Unlimited)	Must maintain MSL 1 classification

Substitute Part Grouping Explanation

Substitution logic for the CL43B105KBFNNNF is based strictly on the following allowed parameters:

Parametric Equivalents maintain identical electrical specifications: 1 µF capacitance, ±10% tolerance, 50V voltage rating, X7R temperature coefficient, and 1812 package. These parts are direct functional replacements with no performance trade-offs.

Direct Manufacturer Substitutes from alternative manufacturers (KEMET, KYOCERA AVX) provide equivalent performance with identical core parameters while offering different packaging options (Cut Tape vs. Tape & Reel) and inventory availability.

Upgrade Substitutes offer enhanced specifications in one or more parameters:

Tolerance upgrades from ±10% to ±5% provide tighter capacitance control
Voltage upgrades from 50V to 100V provide additional design margin
These upgrades maintain the 1 µF capacitance, X7R coefficient, 1812 package, and full operating temperature range

Similar Parts from TDK Corporation share identical electrical and mechanical specifications but carry "Not For New Designs" product status, indicating end-of-life or obsolescence trajectory. These are suitable only for legacy system maintenance or repair applications.

All substitutes maintain ROHS3 compliance, MSL 1 classification, and -55°C to 125°C operating temperature range.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Product Status	Packaging Type
CL43B105KBFNNNF	Samsung Electro-Mechanics	1 µF	±10%	50V	X7R	1812 (4532)	0.057" (1.45mm)	Active	-
CL43B105KBFNNNE	Samsung Electro-Mechanics	1 µF	±10%	50V	X7R	1812 (4532)	0.057" (1.45mm)	Active	Cut Tape & Digi-Reel
C1812C105K5RAC7800	KEMET	1 µF	±10%	50V	X7R	1812 (4532)	0.055" (1.40mm)	Active	Cut Tape & Digi-Reel
KGM43FR71H105KV	KYOCERA AVX	1 µF	±10%	50V	X7R	1812 (4532)	0.087" (2.21mm)	Active	Tape & Reel
C1812C105J5RAC7800	KEMET	1 µF	±5%	50V	X7R	1812 (4532)	0.055" (1.40mm)	Active	Tape & Reel
C1812C105K1RAC7800	KEMET	1 µF	±10%	100V	X7R	1812 (4532)	0.065" (1.65mm)	Active	Tape & Reel
KGM43FR71H105JV	KYOCERA AVX	1 µF	±5%	50V	X7R	1812 (4532)	0.087" (2.21mm)	Active	Tape & Reel
KGM43FR72A105JV	KYOCERA AVX	1 µF	±5%	100V	X7R	1812 (4532)	0.087" (2.21mm)	Active	Tape & Reel
C4532X7R1H105K160KA	TDK Corporation	1 µF	±10%	50V	X7R	1812 (4532)	0.071" (1.80mm)	Not For New Designs	Tape & Reel
C4532X7R1H105K160KM	TDK Corporation	1 µF	±10%	50V	X7R	1812 (4532)	0.071" (1.80mm)	Not For New Designs	Tape & Reel

Engineering Selection Recommendations

For Active Product Designs:

Select from parts with Active product status: CL43B105KBFNNNE, C1812C105K5RAC7800, KGM43FR71H105KV, C1812C105J5RAC7800, C1812C105K1RAC7800, KGM43FR71H105JV, or KGM43FR72A105JV. All maintain ROHS3 compliance and MSL 1 classification required for current manufacturing standards.

For Direct Electrical Equivalence:

CL43B105KBFNNNE (Samsung), C1812C105K5RAC7800 (KEMET), and KGM43FR71H105KV (KYOCERA AVX) provide identical 1 µF ±10% 50V specifications. Selection among these depends on packaging preference (Cut Tape vs. Tape & Reel) and supplier availability.

For Enhanced Tolerance:

C1812C105J5RAC7800 (KEMET) and KGM43FR71H105JV (KYOCERA AVX) upgrade tolerance to ±5%, suitable for applications requiring tighter capacitance control while maintaining 50V rating.

For Increased Voltage Margin:

C1812C105K1RAC7800 (KEMET) and KGM43FR72A105JV (KYOCERA AVX) provide 100V rating with 1 µF capacitance, enabling use in higher voltage circuits or providing additional design safety margin in 50V applications.

For Legacy System Support Only:

C4532X7R1H105K160KA and C4532X7R1H105K160KM (TDK Corporation) carry "Not For New Designs" status and should be used only for repair or maintenance of existing systems. These parts are suitable for direct replacement in legacy applications but are not recommended for new product development.

Frequently Asked Questions (FAQ)

Q: Can I use a 100V rated capacitor in place of the 50V CL43B105KBFNNNF?

A: Yes. C1812C105K1RAC7800 and KGM43FR72A105JV are rated for 100V and maintain all other specifications (1 µF, X7R, 1812 package, -55°C to 125°C). Higher voltage ratings provide additional design margin and are electrically compatible in 50V applications.

Q: What is the difference between ±10% and ±5% tolerance parts?

A: Tolerance defines the allowable deviation from the nominal 1 µF capacitance value. ±10% allows 0.9 µF to 1.1 µF; ±5% allows 0.95 µF to 1.05 µF. Upgrade parts with ±5% tolerance (C1812C105J5RAC7800, KGM43FR71H105JV, KGM43FR72A105JV) provide tighter capacitance control for applications requiring precise values.

Q: Are there physical size differences between substitute parts?

A: All parts use the 1812 (4532 Metric) package with identical length (0.177") and width (0.126"). Thickness varies: Samsung and KEMET parts range from 0.055" to 0.065"; KYOCERA AVX parts are 0.087"; TDK parts are 0.071". Verify PCB clearance if height-constrained applications exist.

Q: What does "Not For New Designs" mean for TDK parts?

A: This status indicates the product is in end-of-life phase. TDK parts C4532X7R1H105K160KA and C4532X7R1H105K160KM are suitable for repair and maintenance of existing systems but should not be selected for new product development due to potential future unavailability.

Q: Do all substitute parts meet RoHS and MSL requirements?

A: Yes. All listed substitute parts are ROHS3 compliant and classified as MSL 1 (Unlimited moisture sensitivity level), matching the original CL43B105KBFNNNF specifications.

Q: What packaging options are available?

A: CL43B105KBFNNNE offers Cut Tape & Digi-Reel packaging. C1812C105K5RAC7800 offers Cut Tape & Digi-Reel. All other substitutes are supplied in Tape & Reel format. Select based on assembly equipment compatibility and procurement volume requirements.

Q: Can I substitute parts with different manufacturers?

A: Yes. KEMET (C1812C105K5RAC7800 series) and KYOCERA AVX (KGM43FR71H105KV series) parts provide equivalent or upgraded specifications while maintaining the 1812 package and X7R temperature coefficient. Verify supplier qualification per your procurement standards.

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