CL31B474KAFNNNF Equivalent & Substitute Parts

Part Overview

The CL31B474KAFNNNF is a 0.47 µF ±10% 25V ceramic capacitor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) surface mount package with X7R temperature coefficient. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design continuity. The X7R temperature coefficient ensures stable capacitance across the operating range of -55°C to 125°C, suitable for general-purpose applications including bypass and decoupling functions.

Key Parameters

Parameter	Value
Capacitance	0.47 µF
Tolerance	±10%
Voltage Rating	25V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CL31B474KAFNNNF is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 0.47 µF
Temperature Coefficient: X7R
Package / Case: 1206 (3216 Metric)
Mounting Type: Surface Mount, MLCC
Operating Temperature Range: -55°C to 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Tolerance: ±10% or tighter (±5% acceptable as upgrade)
Voltage Rating: 25V or higher (50V acceptable as upgrade for enhanced reliability margin)
Thickness: Variations within mechanical constraints of 1206 package

Substitute parts are grouped into two categories:

Direct Equivalents: Parts matching all critical parameters with identical or equivalent tolerance and voltage specifications.

Upgrade Substitutes: Parts with improved tolerance (±5% vs ±10%) or higher voltage rating (50V vs 25V), providing enhanced performance characteristics while maintaining full compatibility with the original application requirements.

Parameter Comparison

Manufacturer	Part Number	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Thickness (Max)	Product Status
Samsung Electro-Mechanics	CL31B474KAFNNNF	0.47 µF	±10%	25V	X7R	1206	0.055" (1.40mm)	Obsolete
KEMET	C1206C474K3RAC7800	0.47 µF	±10%	25V	X7R	1206	0.039" (1.00mm)	Active
Murata Electronics	GRM319R71E474KA01D	0.47 µF	±10%	25V	X7R	1206	0.037" (0.95mm)	Not For New Designs
KYOCERA AVX	KGM31HR71E474KL	0.47 µF	±10%	25V	X7R	1206	0.075" (1.90mm)	Active
KYOCERA AVX	KGM31HR71E474KU	0.47 µF	±10%	25V	X7R	1206	0.075" (1.90mm)	Active
KEMET	C1206C474J3RAC7800	0.47 µF	±5%	25V	X7R	1206	0.039" (1.00mm)	Active
KEMET	C1206C474J5RAC7800	0.47 µF	±5%	50V	X7R	1206	0.039" (1.00mm)	Active
KEMET	C1206C474K5RAC7800	0.47 µF	±10%	50V	X7R	1206	0.039" (1.00mm)	Active
TDK Corporation	C3216X7R1H474K160AA	0.47 µF	±10%	50V	X7R	1206	0.071" (1.80mm)	Not For New Designs
YAGEO	CC1206KKX7R9BB474	0.47 µF	±10%	50V	X7R	1206	0.043" (1.10mm)	Active
Murata Electronics	GRM31MR71H474KA01L	0.47 µF	±10%	50V	X7R	1206	0.049" (1.25mm)	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

Select C1206C474K3RAC7800 (KEMET) or KGM31HR71E474KU (KYOCERA AVX) as primary direct equivalents. Both parts maintain identical capacitance, tolerance, and voltage specifications while offering active product status. KEMET C1206C474K3RAC7800 provides the thinnest profile (1.00mm) and highest inventory availability (18,492 pcs), making it optimal for space-constrained designs and supply chain continuity.

For Enhanced Reliability (Upgraded Specifications):

Select C1206C474K5RAC7800 (KEMET) when higher voltage margin is required. This part upgrades the voltage rating from 25V to 50V while maintaining ±10% tolerance and active product status. With 78,435 pcs in stock, it offers superior supply security and is suitable for applications requiring additional derating margin.

For Tighter Tolerance Requirements:

Select C1206C474J3RAC7800 (KEMET) when ±5% tolerance is specified. This upgrade maintains 25V rating and active status with 8,356 pcs available.

Avoid for New Designs:

Parts with "Not For New Designs" status (GRM319R71E474KA01D, C3216X7R1H474K160AA, GRM31MR71H474KA01L) are suitable only for legacy system maintenance and repair applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 50V rated capacitor in place of the 25V CL31B474KAFNNNF?

A: Yes. A 50V rated capacitor is a valid substitute for a 25V application. The higher voltage rating provides additional safety margin and derating capability. All 50V upgrade options (C1206C474J5RAC7800, C1206C474K5RAC7800, C3216X7R1H474K160AA, CC1206KKX7R9BB474, GRM31MR71H474KA01L) are mechanically and electrically compatible with the original 1206 package footprint.

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

A: Tolerance specifies the allowable deviation from the nominal 0.47 µF capacitance value. ±10% allows deviation from 0.423 µF to 0.517 µF, while ±5% restricts deviation to 0.4465 µF to 0.4935 µF. Tighter tolerance (±5%) is beneficial for precision filtering and timing circuits but is not required for general-purpose bypass and decoupling applications.

Q: Are there physical size differences between substitute parts?

A: All substitute parts use the 1206 (3216 Metric) package with identical length (0.126" / 3.20mm) and width (0.063" / 1.60mm). Thickness varies between 0.037" (0.95mm) and 0.075" (1.90mm). Verify PCB layout clearance if the original design has minimal vertical space constraints. KEMET parts (C1206C474K3RAC7800, C1206C474J3RAC7800, C1206C474J5RAC7800, C1206C474K5RAC7800) offer the thinnest profiles at 0.039" (1.00mm).

Q: Is the CL31B474KAFNNNF still available for purchase?

A: The CL31B474KAFNNNF is classified as obsolete. While 1,116 pcs remain in stock, Samsung Electro-Mechanics no longer manufactures this part. Direct equivalents from active manufacturers (KEMET, KYOCERA AVX) are recommended for new procurement to ensure long-term supply availability.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory requirements of the original CL31B474KAFNNNF.

Q: Which substitute offers the best inventory availability?

A: C1206C474K5RAC7800 (KEMET) provides the highest inventory with 78,435 pcs in stock, followed by KGM31HR71E474KU (KYOCERA AVX) with 35,608 pcs. Both parts are active products with reliable long-term availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message