Equivalent & Substitute Parts for M30U474M1 Ceramic Capacitor

Part Overview

The M30U474M1 is a 0.47 µF ±20% 100V 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 and design continuity. The M30 series radial ceramic capacitor serves general-purpose applications requiring stable capacitance across the 10°C to 85°C operating temperature range.

Key Parameters

Parameter	Value	Specification Basis
Capacitance	0.47 µF	Primary electrical requirement
Voltage Rating	100V	Circuit voltage compatibility
Tolerance	±20%	Acceptable capacitance variation
Temperature Coefficient	Z5U	Temperature stability class
Operating Temperature Range	10°C ~ 85°C	Environmental operating limits
Mounting Type	Through Hole Radial	PCB assembly compatibility
Lead Spacing	0.200" (5.08mm)	PCB footprint requirement

Substitute Part Grouping Explanation

Substitution for the M30U474M1 is organized into three categories based on electrical and mechanical compatibility:

Direct Equivalents maintain identical electrical specifications (0.47 µF, 100V, Z5U, ±20% tolerance) with compatible physical dimensions and lead spacing. These parts satisfy the original design requirements without circuit modification.

Upgrade Substitutes provide enhanced performance through improved temperature coefficient (X7R instead of Z5U) or higher voltage ratings (500V), offering superior stability and reliability. These parts are electrically compatible but provide additional design margin.

Similar Alternatives match the core electrical specifications (0.47 µF, 100V, Z5U, ±20% tolerance) with minor dimensional variations within acceptable PCB assembly tolerances. These parts function identically in circuit operation.

Substitution eligibility is determined by:

Matching capacitance value (0.47 µF)
Equal or higher voltage rating (minimum 100V)
Compatible temperature coefficient (Z5U or superior X7R)
Tolerance within ±20% or better
Lead spacing of 0.200" (5.08mm)
Through-hole radial package configuration

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Temp Range	Lead Spacing	Status	RoHS
M30U474M1	CDE	0.47 µF	100V	±20%	Z5U	10°C ~ 85°C	0.200"	Obsolete	Non-compliant
M30U474M5-F	CDE	0.47 µF	50V	±20%	Z5U	10°C ~ 85°C	0.200"	Obsolete	ROHS3 Compliant
MR061E474MAA	KYOCERA AVX	0.47 µF	100V	±20%	Z5U	10°C ~ 85°C	0.200"	Active	Non-compliant
C330C474K1R5TA	KEMET	0.47 µF	100V	±10%	X7R	-55°C ~ 125°C	0.200"	Active	ROHS3 Compliant
C340C474K1R5TA	KEMET	0.47 µF	100V	±10%	X7R	-55°C ~ 125°C	0.200"	Active	ROHS3 Compliant
C340C474KCR5TA	KEMET	0.47 µF	500V	±10%	X7R	-55°C ~ 125°C	0.200"	Active	ROHS3 Compliant
C340C474MCR5TA9841	KEMET	0.47 µF	500V	±20%	X7R	-55°C ~ 125°C	0.200"	Active	ROHS3 Compliant
C330C474M1U5TA	KEMET	0.47 µF	100V	±20%	Z5U	10°C ~ 85°C	0.200"	Active	ROHS3 Compliant
C340C474M1U5TA	KEMET	0.47 µF	100V	±20%	Z5U	10°C ~ 85°C	0.200"	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

MR061E474MAA (KYOCERA AVX Ceralam® MR series) provides direct electrical equivalence to M30U474M1 with matching 0.47 µF, 100V, Z5U, ±20% specifications. This part maintains active product status and is immediately available. Physical dimensions differ slightly (0.290" L x 0.090" W versus 0.300" L x 0.200" W), requiring PCB layout verification for height and width constraints. Lead spacing remains compatible at 0.200" (5.08mm).

C330C474M1U5TA and C340C474M1U5TA (KEMET GoldMax 300 Comm Z5U series) provide electrical equivalence with superior compliance status. Both parts are ROHS3 compliant and active products with high inventory availability (6260 and 1789 units respectively). Dimensional variations exist between C330C (0.280" L x 0.160" W, 0.360" height) and C340C (0.290" L x 0.160" W, 0.400" height) variants. Selection depends on available PCB footprint space.

For Enhanced Performance (Upgraded Specifications):

C330C474K1R5TA and C340C474K1R5TA (KEMET GoldMax 300 Comm X7R, 100V, ±10%) upgrade the temperature coefficient from Z5U to X7R, extending operating range to -55°C ~ 125°C with improved capacitance stability. Tolerance improves to ±10%. Both are ROHS3 compliant active products. C330C variant (0.280" L x 0.160" W, 0.360" height) offers compact dimensions; C340C variant (0.290" L x 0.160" W, 0.460" height) provides additional height margin.

C340C474KCR5TA and C340C474MCR5TA9841 (KEMET GoldMax 300 Comm X7R HV, 500V) provide high-voltage capability for circuits requiring enhanced voltage margin. Both maintain X7R temperature coefficient and -55°C ~ 125°C operating range. C340C474KCR5TA offers ±10% tolerance; C340C474MCR5TA9841 maintains ±20% tolerance matching the original specification. Larger physical dimensions (0.400" L x 0.270" W, 0.560" height) require PCB space verification.

Voltage Rating Consideration:

M30U474M5-F (CDE, 50V) is electrically unsuitable for direct replacement due to reduced voltage rating. This part is only applicable if circuit voltage requirements are confirmed at 50V or below.

Frequently Asked Questions (FAQ)

Q: Can M30U474M5-F substitute for M30U474M1?

A: No. M30U474M5-F has a 50V voltage rating versus the 100V requirement of M30U474M1. Using a lower-rated component creates reliability risk. This part is only suitable if the circuit operates at 50V or below.

Q: What is the difference between Z5U and X7R temperature coefficients?

A: Z5U provides ±20% capacitance variation across 10°C ~ 85°C operating range. X7R provides ±15% variation across -55°C ~ 125°C range, offering superior stability and wider temperature coverage. X7R substitutes are upgrades providing better performance.

Q: Are KEMET C330C and C340C series physically interchangeable?

A: Both series maintain 0.200" (5.08mm) lead spacing and radial configuration. C330C dimensions are 0.280" L x 0.160" W with 0.360" maximum height. C340C dimensions are 0.290" L x 0.160" W with varying heights (0.400" to 0.560" depending on voltage rating). PCB footprint must accommodate the selected variant's length and height.

Q: Why is RoHS compliance important for substitution?

A: RoHS3 compliance indicates the part meets current environmental and hazardous substance restrictions. ROHS3 compliant substitutes (KEMET parts) are preferred for new designs and production continuity. Non-compliant parts (CDE M30U474M1, KYOCERA AVX MR061E474MAA) may face supply restrictions or regulatory barriers in certain markets.

Q: Can I use a 500V rated capacitor in a 100V circuit?

A: Yes. Higher voltage ratings provide design margin and improved reliability. C340C474KCR5TA and C340C474MCR5TA9841 (500V) are electrically compatible with 100V circuits. Larger physical dimensions require PCB layout verification.

Q: What inventory status should I prioritize?

A: Active product status ensures long-term availability and supply continuity. KEMET parts (C330C474M1U5TA with 6260 units, C340C474M1U5TA with 1789 units) provide highest availability. KYOCERA AVX MR061E474MAA (776 units) and CDE M30U474M5-F (999 units) offer moderate availability. Obsolete parts (M30U474M1, M30U474M5-F) face eventual discontinuation.

Q: Are formed leads versus straight leads compatible with my PCB?

A: Lead style affects insertion force and component positioning. Straight leads (MR061E474MAA, C340C474KCR5TA, C340C474MCR5TA9841) insert perpendicular to the PCB. Formed leads (C330C474K1R5TA, C340C474K1R5TA, C330C474M1U5TA, C340C474M1U5TA) are pre-bent for specific spacing. PCB hole pattern and assembly equipment determine compatibility. Verify with your manufacturing process.

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