M30R104M2 Equivalent & Substitute Parts Reference

Part Overview

The M30R104M2 is a 0.1 µF ±20% 200V ceramic capacitor with X7R temperature coefficient manufactured by Cornell Dubilier Electronics (CDE) in radial through-hole configuration. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing production, maintenance, and design updates. The radial package with 0.200" lead spacing and straight leads defines the mechanical compatibility envelope for substitutes.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	0.1 µF	Must match exactly
Voltage Rating	200V	Substitutes must meet or exceed
Tolerance	±20%	Substitutes may have tighter tolerance
Temperature Coefficient	X7R	Defines thermal stability; C0G/NP0 acceptable as upgrade
Mounting Type	Through Hole Radial	Must match for PCB compatibility
Lead Spacing	0.200" (5.08mm)	Must match for board hole pattern
Operating Temperature	-55°C to 125°C	Substitutes must cover this range
RoHS Status	Non-compliant	Active substitutes are ROHS3 compliant

Substitute Part Grouping Explanation

Substitution logic for the M30R104M2 is based on the following criteria:

Mandatory Matching Parameters:

Capacitance: 0.1 µF (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Lead Spacing: 0.200" (5.08mm) (exact match required)
Operating Temperature Range: -55°C to 125°C (minimum requirement)

Allowable Variations:

Voltage Rating: Substitutes rated at 200V, 250V, or 500V are acceptable; higher ratings provide design margin
Tolerance: Substitutes with ±1%, ±2%, ±5%, or ±10% tolerance are acceptable; tighter tolerances represent upgrades
Temperature Coefficient: X7R or C0G/NP0 are functionally equivalent for general-purpose applications
Lead Style: Straight or formed leads are both acceptable within the 0.200" spacing constraint
Physical Dimensions: Minor variations in length and width are acceptable provided lead spacing remains 0.200"

All substitute parts are from KEMET's GoldMax 300 series and are active products with ROHS3 compliance, representing a significant upgrade from the obsolete M30R104M2.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Status	RoHS	Inventory
M30R104M2	CDE	0.1 µF	200V	±20%	X7R	Obsolete	Non-compliant	929 Pcs
C330C104F2G5TA	KEMET	0.1 µF	200V	±1%	C0G	Active	ROHS3	740 Pcs
C330C104FAG5TA	KEMET	0.1 µF	250V	±1%	C0G	Active	ROHS3	1092 Pcs
C330C104G2G5TA	KEMET	0.1 µF	200V	±2%	C0G	Active	ROHS3	660 Pcs
C330C104GAG5TA	KEMET	0.1 µF	250V	±2%	C0G	Active	ROHS3	1015 Pcs
C330C104J2G5TA	KEMET	0.1 µF	200V	±5%	C0G	Active	ROHS3	1120 Pcs
C330C104JAG5TA	KEMET	0.1 µF	250V	±5%	C0G	Active	ROHS3	720 Pcs
C330C104K2G5TA	KEMET	0.1 µF	200V	±10%	C0G	Active	ROHS3	904 Pcs
C330C104K2R5TA	KEMET	0.1 µF	200V	±10%	X7R	Active	ROHS3	19861 Pcs
C330C104KAG5TA	KEMET	0.1 µF	250V	±10%	C0G	Active	ROHS3	718 Pcs
C330C104KCR5TA	KEMET	0.1 µF	500V	±10%	X7R	Active	ROHS3	1904 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Characteristics): Select C330C104K2R5TA when X7R temperature coefficient and ±10% tolerance match the original design intent. This part maintains the same thermal stability profile as M30R104M2 while providing ROHS3 compliance and active product status. Inventory availability is highest at 19,861 pieces.

For Improved Tolerance Requirements: C330C104F2G5TA (±1% C0G) or C330C104G2G5TA (±2% C0G) are suitable when circuit design requires tighter capacitance tolerance. C0G temperature coefficient provides superior stability across the -55°C to 125°C operating range compared to X7R.

For Voltage Margin Applications: C330C104FAG5TA, C330C104GAG5TA, or C330C104KAG5TA provide 250V rating, and C330C104KCR5TA provides 500V rating. These are appropriate for designs requiring additional voltage safety margin or operating in elevated voltage environments.

Compliance Consideration: All KEMET substitutes are ROHS3 compliant, addressing the non-compliant status of the obsolete M30R104M2. This is mandatory for new designs and production runs subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can C330C104K2R5TA directly replace M30R104M2 without circuit modification?

A: Yes. Both parts share identical capacitance (0.1 µF), voltage rating (200V), temperature coefficient (X7R), operating temperature range (-55°C to 125°C), and lead spacing (0.200"). The radial through-hole package and lead configuration are compatible with existing PCB layouts.

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

A: C0G (also designated NP0) provides near-zero capacitance change across temperature, with typical variation of ±30 ppm/°C. X7R allows ±15% capacitance change over the operating range. For general-purpose applications, both are functionally equivalent. C0G is preferred for precision circuits requiring stable capacitance.

Q: Why do some substitutes have higher voltage ratings (250V or 500V)?

A: Higher voltage ratings provide design margin and improve reliability in applications subject to voltage transients or operating near the rated voltage. C330C104KCR5TA at 500V is suitable for high-voltage or industrial applications where additional safety margin is required.

Q: Are the physical dimensions of KEMET substitutes compatible with the original PCB?

A: Lead spacing is identical at 0.200" (5.08mm) for all substitutes, ensuring PCB hole pattern compatibility. KEMET parts are slightly smaller in body dimensions (0.280" L x 0.160" W versus 0.300" L x 0.200" W for M30R104M2), which provides better fit in space-constrained layouts.

Q: What tolerance should I select for my application?

A: Select tolerance based on circuit requirements. ±20% (original) is acceptable for general filtering and decoupling. ±10% (C330C104K2R5TA or C330C104K2G5TA) is standard for most applications. ±5%, ±2%, or ±1% are required only when precise capacitance values are critical to circuit function.

Q: Is ROHS3 compliance mandatory for my design?

A: ROHS3 compliance is mandatory for products sold in the European Union and many other markets. All KEMET substitutes are ROHS3 compliant. The original M30R104M2 is non-compliant and unsuitable for new designs subject to RoHS regulations.

Q: Which substitute has the best inventory availability?

A: C330C104K2R5TA has the highest inventory at 19,861 pieces, making it the most readily available option for volume production or rapid prototyping.

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