M30R334K5-F Equivalent & Substitute Parts Reference

Part Overview

The M30R334K5-F is a 0.33 µF ±10% 50V ceramic capacitor with X7R temperature coefficient manufactured by Cornell Dubilier Electronics (CDE) in radial through-hole configuration. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new procurement and design continuity. The M30 series radial ceramic capacitor remains functionally relevant for general-purpose applications requiring stable capacitance across the -55°C to 125°C operating range. Active substitute parts maintain identical electrical specifications while offering current manufacturing status and improved supply chain availability.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	0.33 µF	Critical - must match exactly
Tolerance	±10%	Critical - must match exactly
Voltage Rating	50V	Critical - must match or exceed
Temperature Coefficient	X7R	Critical - determines stability characteristics
Operating Temperature Range	-55°C to 125°C	Critical - must match or exceed
Mounting Type	Through Hole	Critical - determines PCB compatibility
Package Type	Radial	Critical - determines lead configuration
Lead Spacing	0.200" (5.08mm)	Critical - determines PCB footprint compatibility
RoHS Status	ROHS3 Compliant	Regulatory - required for most applications

Substitute Part Grouping Explanation

Substitute parts for the M30R334K5-F are qualified based on strict electrical and mechanical parameter matching. All substitute candidates maintain:

Electrical equivalence: 0.33 µF capacitance, ±10% tolerance, 50V rated voltage, X7R temperature coefficient, -55°C to 125°C operating range
Mechanical compatibility: Through-hole radial package with 0.200" (5.08mm) lead spacing
Regulatory compliance: ROHS3 compliance and EAR99 export classification
Active product status: All listed substitutes are manufactured by active suppliers or carry active product designation

Physical dimensions (length, width, height) vary among substitutes due to different manufacturer design approaches. These dimensional variations are acceptable provided lead spacing remains 0.200" (5.08mm) and the component fits within available PCB space. Lead style variations (straight vs. formed/kinked) do not affect electrical performance but may influence insertion and soldering processes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Temp Range	Lead Spacing	Product Status	Inventory
M30R334K5-F	Cornell Dubilier Electronics	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Obsolete	1160 Pcs
C330C334K5R5TA	KEMET	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	4434 Pcs
FK24X7R1H334KN000	TDK Corporation	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.197"	Not For New Designs	5076 Pcs
K334K20X7RF53H5	Vishay Beyschlag/Draloric/BC Components	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.197"	Active	892 Pcs
RDER71H334K1K1H03B	Murata Electronics	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.197"	Active	1645 Pcs
RDER71H334K1M1H03A	Murata Electronics	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.197"	Active	7750 Pcs
SR215C334KARTR1	KYOCERA AVX	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	1017 Pcs
SR305C334KAATR1	KYOCERA AVX	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	810 Pcs
SR305C334KAR	KYOCERA AVX	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	1844 Pcs
SR655C334KAATR1	KYOCERA AVX	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	770 Pcs
SR655C334KARTR1	KYOCERA AVX	0.33 µF	±10%	50V	X7R	-55°C to 125°C	0.200"	Active	869 Pcs

Engineering Selection Recommendations

Primary Recommendation: C330C334K5R5TA (KEMET)

The KEMET C330C334K5R5TA is the preferred substitute for the obsolete M30R334K5-F. This part maintains exact lead spacing (0.200"), active product status, ROHS3 compliance, and the highest inventory availability (4434 units). The GoldMax 300 Comm X7R series provides proven reliability in general-purpose applications.

Secondary Recommendations:

KYOCERA AVX SkyCap® SR Series (SR305C334KAR, SR305C334KAATR1, SR655C334KAATR1, SR655C334KARTR1): All maintain 0.200" lead spacing and active product status. These parts offer multiple packaging options (bulk and tape & reel) and adequate inventory levels. Selection among these variants depends on packaging requirements and PCB lead style preference (straight vs. formed/kinked).

Murata Electronics RDE Series (RDER71H334K1K1H03B, RDER71H334K1M1H03A): Both parts are active with substantial inventory (1645 and 7750 units respectively). Lead spacing is 0.197" (5.00mm), which represents a 0.003" deviation from the original specification. This minor deviation is acceptable for most PCB designs with standard 0.200" hole spacing, as formed leads accommodate this tolerance. The RDER71H334K1M1H03A offers superior availability in cut tape packaging.

Not Recommended for New Designs:

The TDK FK24X7R1H334KN000 carries "Not For New Designs" status and should not be selected for new applications despite adequate inventory. The Vishay K334K20X7RF53H5 has limited inventory (892 units) and represents a lower-priority alternative.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with 0.197" lead spacing instead of 0.200"?

A: Yes, with verification. The 0.003" difference is within standard PCB manufacturing tolerances. Formed or kinked leads accommodate this variation. Verify your PCB design allows this spacing before committing to production quantities.

Q: What is the difference between straight and formed/kinked leads?

A: Straight leads insert perpendicular to the PCB. Formed/kinked leads are pre-bent for specific insertion angles. Both configurations are electrically equivalent. Selection depends on your assembly equipment and insertion process. Verify your equipment specifications before switching lead styles.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes carry ROHS3 compliance certification, meeting regulatory requirements for most markets.

Q: What packaging options are available?

A: Substitutes are available in bulk, cut tape (CT), and tape & reel (TR) configurations. Select based on your procurement and assembly requirements. Bulk packaging suits lower-volume applications; tape & reel suits automated assembly.

Q: Can I mix different substitute manufacturers in the same design?

A: Yes. All substitutes meet identical electrical and mechanical specifications. However, verify your quality assurance procedures allow multiple qualified sources before implementing mixed sourcing.

Q: Why do substitute parts have different physical dimensions?

A: Manufacturers design radial ceramic capacitors with different case geometries while maintaining electrical performance and lead spacing. Dimensional variations do not affect electrical function. Verify available PCB space accommodates the selected substitute's height and width before design release.

Q: Which substitute has the best inventory availability?

A: The KEMET C330C334K5R5TA offers the highest inventory (4434 units), followed by the Murata RDER71H334K1M1H03A (7750 units in cut tape). Verify current stock levels with your supplier before finalizing procurement decisions.

Q: Is the original M30R334K5-F still available?

A: The M30R334K5-F is classified as obsolete. Current inventory of 1160 units exists but represents limited supply. Transition to active substitutes is recommended for long-term design continuity.

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