M22U224M5 Equivalent & Substitute Parts Reference

Part Overview

The M22U224M5 is a 0.22 µF ±20% 50V ceramic capacitor with Z5U temperature coefficient manufactured by Cornell Dubilier Electronics (CDE) in radial through-hole configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production support, design updates, and inventory replenishment. The Z5U temperature coefficient and ±20% tolerance are typical of general-purpose applications where moderate capacitance stability is acceptable. Active substitute options from KEMET provide improved performance characteristics including tighter tolerances, extended temperature ranges, and RoHS3 compliance.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	0.22 µF	Must match exactly across all substitutes
Voltage Rating	50V	Minimum requirement; higher ratings acceptable
Tolerance	±20%	Tighter tolerances acceptable; looser tolerances not acceptable
Temperature Coefficient	Z5U	Defines capacitance stability; C0G/NP0 and X7R alternatives acceptable for general-purpose use
Mounting Type	Through Hole Radial	Must remain through-hole radial for PCB compatibility
Lead Spacing	0.200" (5.08mm)	Must match for direct PCB footprint compatibility
Operating Temperature	10°C ~ 85°C	Substitute range must encompass or exceed this range
RoHS Status	RoHS non-compliant	RoHS3 compliant substitutes preferred for new designs

Substitute Part Grouping Explanation

Substitution logic for the M22U224M5 is based on the following criteria:

Mandatory Matching Parameters:

Capacitance: 0.22 µF (exact match required)
Mounting Type: Through Hole Radial (no surface-mount alternatives)
Lead Spacing: 0.200" (5.08mm) for direct PCB compatibility
Package/Case: Radial configuration

Acceptable Variation Parameters:

Voltage Rating: 50V minimum; 100V rated substitutes provide additional design margin
Tolerance: ±20% or tighter (±1%, ±2%, ±5%, ±10% all acceptable)
Temperature Coefficient: Z5U, C0G/NP0, or X7R acceptable for general-purpose applications
Operating Temperature Range: Must encompass -55°C to 125°C or equivalent to original 10°C ~ 85°C range
RoHS Compliance: RoHS3 compliant substitutes preferred

All substitute parts listed are KEMET GoldMax 300 series radial ceramic capacitors with identical 0.22 µF capacitance, 0.200" lead spacing, and through-hole radial mounting. Substitutes are grouped by voltage rating (50V or 100V) and tolerance specification (±1%, ±2%, ±5%, ±10%).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Operating Temp	Lead Spacing	RoHS Status	Product Status
M22U224M5	Cornell Dubilier	0.22 µF	±20%	50V	Z5U	10°C ~ 85°C	0.200"	Non-compliant	Obsolete
C330C224F1G5TA	KEMET	0.22 µF	±1%	100V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224F5G5TA	KEMET	0.22 µF	±1%	50V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224G1G5TA	KEMET	0.22 µF	±2%	100V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224G5G5TA	KEMET	0.22 µF	±2%	50V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224J1G5TA	KEMET	0.22 µF	±5%	100V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224J5G5TA	KEMET	0.22 µF	±5%	50V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224K1G5TA	KEMET	0.22 µF	±10%	100V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224K1R5TA	KEMET	0.22 µF	±10%	100V	X7R	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224K5G5TA	KEMET	0.22 µF	±10%	50V	C0G/NP0	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active
C330C224K5R5TA	KEMET	0.22 µF	±10%	50V	X7R	-55°C ~ 125°C	0.200"	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating):

Select C330C224K5G5TA or C330C224K5R5TA for 50V applications requiring direct voltage compatibility with the original M22U224M5. Both parts maintain 0.22 µF capacitance, 0.200" lead spacing, and through-hole radial mounting. C330C224K5G5TA (C0G/NP0) provides superior temperature stability; C330C224K5R5TA (X7R) offers broader temperature coefficient characteristics. Both are ROHS3 compliant and active products with established supply availability.

For Design Margin Enhancement:

Select any 100V rated substitute (C330C224F1G5TA, C330C224G1G5TA, C330C224J1G5TA, C330C224K1G5TA, or C330C224K1R5TA) to provide additional voltage headroom beyond the original 50V specification. This approach is suitable for new designs or redesigns where increased reliability margin is beneficial. All 100V options maintain identical capacitance, lead spacing, and mounting configuration.

For Tolerance Requirements:

±1% tolerance: C330C224F1G5TA (100V) or C330C224F5G5TA (50V)
±2% tolerance: C330C224G1G5TA (100V) or C330C224G5G5TA (50V)
±5% tolerance: C330C224J1G5TA (100V) or C330C224J5G5TA (50V)
±10% tolerance: C330C224K1G5TA (100V), C330C224K5G5TA (50V), or X7R variants

Compliance Considerations:

All KEMET substitutes are ROHS3 compliant, addressing regulatory requirements absent in the obsolete M22U224M5. Extended operating temperature range (-55°C ~ 125°C) across all substitutes exceeds the original specification (10°C ~ 85°C), providing enhanced thermal performance for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 100V rated capacitor in place of the 50V M22U224M5?

A: Yes. Voltage rating represents the maximum safe operating voltage. A 100V rated capacitor operates safely at 50V and below. Higher voltage ratings provide additional design margin and are electrically compatible. Physical dimensions and lead spacing remain identical, ensuring PCB compatibility.

Q: What is the difference between C0G/NP0 and X7R temperature coefficients?

A: C0G/NP0 provides superior capacitance stability across temperature extremes, with minimal capacitance variation from -55°C to 125°C. X7R offers broader temperature coefficient characteristics with slightly greater capacitance variation but remains suitable for general-purpose applications. Both are acceptable substitutes for the original Z5U specification in non-critical applications.

Q: Does tighter tolerance (±1% vs. ±20%) affect PCB compatibility?

A: No. Tolerance specifications define capacitance accuracy only and do not affect physical dimensions, lead spacing, or mounting characteristics. Tighter tolerance substitutes are electrically superior and directly compatible with existing PCB designs.

Q: Are all KEMET substitutes in active production?

A: Yes. All listed KEMET part numbers (C330C series) are classified as active products with established supply chains. The original M22U224M5 is obsolete; KEMET substitutes provide long-term availability assurance.

Q: What is the significance of ROHS3 compliance?

A: ROHS3 compliance indicates the part meets current environmental and regulatory standards for hazardous substance restrictions. The original M22U224M5 is non-compliant. ROHS3 compliant substitutes are required for new designs and many OEM applications subject to regulatory requirements.

Q: Can I substitute based on capacitance value alone?

A: No. Substitution requires matching capacitance (0.22 µF), lead spacing (0.200"), mounting type (through-hole radial), and package configuration. Voltage rating, tolerance, and temperature coefficient may vary within acceptable parameters. All other parameters must remain constant for direct PCB compatibility.

Q: Which substitute offers the best overall performance upgrade?

A: C330C224F1G5TA or C330C224F5G5TA provide the tightest tolerance (±1%) and superior temperature stability (C0G/NP0). Selection between 100V and 50V variants depends on application voltage requirements. Both offer ROHS3 compliance, extended temperature range, and active production status.

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