CL10B393KB8NFNC Equivalent & Substitute Parts

Part Overview

The CL10B393KB8NFNC is a 0.039 µF ±10% 50V ceramic capacitor manufactured by Samsung Electro-Mechanics in the 0603 (1608 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) features X7R temperature coefficient characteristics and operates across -55°C to 125°C. The part is classified as Active product status with ROHS3 compliance and MSL 1 rating. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility are maintained across alternative manufacturers or when upgraded specifications are required for enhanced performance margins.

Key Parameters

Parameter	Value	Specification Basis
Capacitance	0.039 µF	Core electrical requirement
Tolerance	±10%	Acceptable variance range
Voltage Rating	50V	Minimum operating voltage
Temperature Coefficient	X7R	Stability across temperature range
Package / Case	0603 (1608 Metric)	Physical footprint compatibility
Mounting Type	Surface Mount, MLCC	Assembly process requirement
Operating Temperature	-55°C to 125°C	Environmental specification
RoHS Status	ROHS3 Compliant	Regulatory compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirement

Substitute Part Grouping Explanation

Substitute parts are classified into three categories based on electrical and mechanical compatibility with the main part CL10B393KB8NFNC:

Parametric Equivalents maintain identical electrical specifications: 0.039 µF capacitance, ±10% tolerance, 50V voltage rating, X7R temperature coefficient, and 0603 package. These parts differ only in packaging format (Tape & Reel vs. bulk) or are from alternative manufacturers with equivalent performance characteristics.

Direct Manufacturer Equivalents are sourced from different manufacturers but satisfy all core electrical parameters and mechanical requirements. These parts are functionally interchangeable in circuit applications.

Upgrade Parts provide enhanced specifications in one or more parameters while maintaining the 0603 package and core capacitance value. Upgrades include tighter tolerance (±5% vs. ±10%) or higher voltage rating (100V vs. 50V), offering improved performance margins for demanding applications.

The substitution logic is based strictly on: capacitance value, tolerance range, voltage rating, temperature coefficient, package dimensions, mounting type, and regulatory compliance status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	Packaging Type	Inventory (Pcs)
CL10B393KB8NFNC	Samsung Electro-Mechanics	0.039 µF	±10%	50V	X7R	0603	Active	Bulk	996
CL10B393KB8NNNC	Samsung Electro-Mechanics	0.039 µF	±10%	50V	X7R	0603	Active	Tape & Reel	192319
C0603C393K5RAC7867	KEMET	0.039 µF	±10%	50V	X7R	0603	Active	Tape & Reel	6486
KGM15BR71H393KT	KYOCERA AVX	0.039 µF	±10%	50V	X7R	0603	Active	Tape & Reel	102361
CC0603KRX7R9BB393	YAGEO	0.039 µF	±10%	50V	X7R	0603	Active	Tape & Reel	2618
C0603C393J5RAC7867	KEMET	0.039 µF	±5%	50V	X7R	0603	Active	Tape & Reel	17481
C0603C393K1RAC7867	KEMET	0.039 µF	±10%	100V	X7R	0603	Active	Tape & Reel	5250
GCM188R71H393KA55D	Murata Electronics	0.039 µF	±10%	50V	X7R	0603	Not For New Designs	Tape & Reel	4300
KGM15BR71H393JT	KYOCERA AVX	0.039 µF	±5%	50V	X7R	0603	Active	Tape & Reel	31095

Engineering Selection Recommendations

For Direct Substitution (Equivalent Performance): Select CL10B393KB8NNNC, C0603C393K5RAC7867, KGM15BR71H393KT, or CC0603KRX7R9BB393. All maintain identical electrical specifications (0.039 µF, ±10%, 50V, X7R) and 0603 package compatibility. All are Active product status with ROHS3 compliance and MSL 1 rating. Selection among these parts may be based on packaging format preference (Tape & Reel availability) and inventory levels.

For Enhanced Tolerance Performance: Select C0603C393J5RAC7867 or KGM15BR71H393JT for applications requiring tighter capacitance tolerance (±5% vs. ±10%). Both maintain 50V rating, X7R characteristics, and 0603 package. Both are Active status with full compliance certifications.

For Increased Voltage Margin: Select C0603C393K1RAC7867 for applications requiring higher voltage rating (100V vs. 50V). This part maintains 0.039 µF capacitance, ±10% tolerance, X7R temperature coefficient, and 0603 package. Active product status with ROHS3 compliance.

Not Recommended for New Designs: GCM188R71H393KA55D carries "Not For New Designs" product status despite meeting electrical and mechanical specifications. This part is suitable only for legacy system maintenance or repair applications.

Frequently Asked Questions (FAQ)

Q: Can CL10B393KB8NFNC be replaced with CL10B393KB8NNNC? A: Yes. Both parts are manufactured by Samsung Electro-Mechanics with identical electrical specifications (0.039 µF, ±10%, 50V, X7R) and 0603 package. The difference is packaging format: CL10B393KB8NFNC is bulk packaging, while CL10B393KB8NNNC is Tape & Reel. Electrical performance is equivalent.

Q: Are KEMET, KYOCERA AVX, and YAGEO parts directly interchangeable with Samsung parts? A: Yes, for parts with matching electrical parameters. C0603C393K5RAC7867 (KEMET), KGM15BR71H393KT (KYOCERA AVX), and CC0603KRX7R9BB393 (YAGEO) all meet the 0.039 µF, ±10%, 50V, X7R, 0603 specification. All are Active status with ROHS3 compliance and MSL 1 rating. Physical dimensions are within acceptable tolerance for PCB footprint compatibility.

Q: What is the difference between ±10% and ±5% tolerance parts? A: Tolerance specifies the acceptable deviation from the nominal 0.039 µF value. ±10% allows deviation from 0.0351 µF to 0.0429 µF. ±5% allows deviation from 0.03705 µF to 0.04095 µF. ±5% tolerance parts (C0603C393J5RAC7867, KGM15BR71H393JT) provide tighter capacitance control for precision applications.

Q: Can I use the 100V rated part (C0603C393K1RAC7867) instead of the 50V part? A: Yes. Higher voltage rating provides additional safety margin. The 100V part maintains 0.039 µF capacitance, ±10% tolerance, X7R characteristics, and 0603 package. It is suitable for applications where the original 50V specification is adequate but higher voltage margin is desired.

Q: Why is GCM188R71H393KA55D marked "Not For New Designs"? A: This Murata part meets all electrical and mechanical specifications but carries "Not For New Designs" status, indicating the manufacturer is phasing out this product line. It remains available for legacy system support and repair. New designs should select from Active status alternatives.

Q: Are there physical dimension differences between manufacturers? A: Minor variations exist within specification tolerance. All parts conform to 0603 (1608 Metric) package: 0.063" L × 0.031" W (1.60mm × 0.80mm). Thickness varies slightly: Samsung and KEMET parts are 0.035" (0.90mm) maximum; KYOCERA AVX is 0.037" (0.95mm) maximum. These variations are within PCB design tolerance and do not affect interchangeability.

Q: What does MSL 1 (Unlimited) mean? A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts carry MSL 1 rating, eliminating moisture-related reliability concerns.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed parts, including the main part and all substitutes, are ROHS3 compliant. This ensures regulatory compliance for applications subject to RoHS directives.

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