YFF32SC1E223M Equivalent & Substitute Parts

Part Overview

The YFF32SC1E223M is a 0.022 µF feed-through capacitor manufactured by TDK Corporation, rated for 25V operation with a maximum DC resistance of 300mOhm in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Feed-through capacitors serve as EMI filtering elements in high-frequency applications, requiring precise electrical and mechanical compatibility for direct substitution. The obsolete status of the YFF32SC1E223M necessitates evaluation of active alternatives that maintain equivalent performance characteristics.

Key Parameters

Parameter	Value
Capacitance	0.022 µF
Voltage Rating	25V
DC Resistance (Max)	300mOhm
Current Rating	500 mA
Package / Case	1206 (3216 Metric), 4 PC Pad
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the YFF32SC1E223M is determined by the following critical parameters:

Mandatory Equivalence Criteria:

Capacitance value: 0.022 µF (exact match required)
Package / Case: 1206 (3216 Metric), 4 PC Pad (physical and electrical compatibility)
Mounting Type: Surface Mount (assembly process compatibility)
Operating Temperature Range: -55°C ~ 125°C (thermal envelope compatibility)
RoHS3 Compliance: Required for regulatory alignment

Allowable Parameter Variations:

Voltage Rating: Substitute parts may exceed the original 25V rating, provided the higher rating does not introduce incompatibility with the circuit design
DC Resistance: Substitute parts may have different DCR values within acceptable limits for the application
Current Rating: Substitute parts may have different current ratings
Tolerance: Variations permitted based on circuit requirements

The W3F15C2238AT1A from KYOCERA AVX meets all mandatory equivalence criteria and is classified as an active product, providing long-term availability and supply chain stability.

Parameter Comparison

Parameter	YFF32SC1E223M (Main Part)	W3F15C2238AT1A (Substitute)
Manufacturer	TDK Corporation	KYOCERA AVX
Capacitance	0.022 µF	0.022 µF
Voltage Rating	25V	50V
Current Rating	500 mA	300 mA
DC Resistance (Max)	300mOhm	600mOhm
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	1206 (3216 Metric), 4 PC Pad	1206 (3216 Metric), 4 PC Pad
Size / Dimension	0.126" L x 0.049" W (3.20mm x 1.25mm)	0.126" L x 0.063" W (3.20mm x 1.60mm)
Height (Max)	0.039" (1.00mm)	0.050" (1.27mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The W3F15C2238AT1A is a direct functional substitute for the YFF32SC1E223M based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance values (0.022 µF) and operating temperature ranges (-55°C ~ 125°C). The substitute part features a higher voltage rating (50V vs. 25V), which provides additional design margin and does not introduce incompatibility in circuits designed for 25V operation.

Physical Compatibility: Both components utilize the 1206 (3216 Metric), 4 PC Pad package with surface mount configuration. Dimensional variations (width: 0.049" vs. 0.063"; height: 0.039" vs. 0.050") remain within standard PCB layout tolerances for this package class.

Regulatory Compliance: Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent environmental and regulatory performance.

Supply Chain Status: The W3F15C2238AT1A is classified as an active product with documented inventory availability, addressing the obsolescence risk of the YFF32SC1E223M.

Frequently Asked Questions (FAQ)

Q: Can the W3F15C2238AT1A directly replace the YFF32SC1E223M without circuit modification?

A: Yes. Both components share identical capacitance values, package configurations, and operating temperature ranges. The higher voltage rating of the substitute part (50V vs. 25V) provides additional design margin and does not require circuit modification for applications originally designed for 25V operation.

Q: What are the dimensional differences between these components?

A: The W3F15C2238AT1A has slightly larger width (0.063" vs. 0.049") and height (0.050" vs. 0.039") dimensions. These variations remain within standard tolerances for the 1206 package class and do not typically impact PCB layout compatibility.

Q: Are there differences in DC resistance between the main part and substitute?

A: Yes. The YFF32SC1E223M has a maximum DCR of 300mOhm, while the W3F15C2238AT1A has a maximum DCR of 600mOhm. Circuit designs must account for this parameter difference if DCR performance is critical to application function.

Q: What is the current rating difference, and does it affect substitution?

A: The YFF32SC1E223M is rated for 500 mA, while the W3F15C2238AT1A is rated for 300 mA. Substitution is valid only if the application current requirement does not exceed 300 mA.

Q: Are both components RoHS compliant?

A: Yes. Both the YFF32SC1E223M and W3F15C2238AT1A are ROHS3 compliant with identical moisture sensitivity levels (MSL 1, Unlimited), ensuring equivalent environmental performance.

Q: Why is the YFF32SC1E223M classified as obsolete?

A: The YFF32SC1E223M is no longer in active production by TDK Corporation. The W3F15C2238AT1A from KYOCERA AVX is an active alternative that provides equivalent electrical and mechanical performance with ongoing supply chain availability.

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