AR305C334K4R Equivalent & Substitute Parts

Part Overview

The AR305C334K4R is a 0.33 µF ceramic capacitor manufactured by KYOCERA AVX in the SkyCap® AR series. This through-hole radial capacitor operates at 50V with X7R temperature coefficient and is rated for automotive applications under AEC-Q200 standards. The part is active and in production with 705 units currently in stock.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the critical parameters: capacitance value, voltage rating, temperature coefficient, tolerance, and lead configuration.

Key Parameters

Parameter	Value
Capacitance	0.33 µF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.200" (5.08mm) or 0.098" (2.50mm)
Ratings	AEC-Q200
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core electrical and mechanical parameters:

Capacitance: 0.33 µF (exact match required)
Voltage Rating: 50V (exact match required)
Temperature Coefficient: X7R (exact match required)
Tolerance: ±10% (exact match required)
Mounting Type: Through Hole Radial (exact match required)
AEC-Q200 Automotive Rating (exact match required)
RoHS3 Compliance (exact match required)

All four substitute parts from Murata Electronics (RCE series) meet these core criteria. Variations exist in lead spacing (0.200" vs. 0.098"), lead style (straight vs. formed), and packaging format (bulk vs. cut tape), which determine application-specific compatibility.

Parameter Comparison

Parameter	AR305C334K4R (KYOCERA AVX)	RCER71H334K1K1H03B (Murata)	RCER71H334K1M1H03A (Murata)	RCER71H334K1A2H03B (Murata)	RCER71H334K1DBH03A (Murata)
Capacitance	0.33 µF	0.33 µF	0.33 µF	0.33 µF	0.33 µF
Tolerance	±10%	±10%	±10%	±10%	±10%
Voltage Rating	50V	50V	50V	50V	50V
Temperature Coefficient	X7R	X7R	X7R	X7R	X7R
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial	Radial	Radial	Radial	Radial
Lead Spacing	0.200" (5.08mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.098" (2.50mm)	0.098" (2.50mm)
Lead Style	Straight	Formed Leads	Formed Leads	Straight	Straight
Size / Dimension	0.300" L x 0.150" W (7.62mm x 3.81mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)	0.157" L x 0.098" W (4.00mm x 2.50mm)
AEC-Q200 Rating	Yes	Yes	Yes	Yes	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Bulk	Cut Tape (CT)	Bulk	Cut Tape (CT)
Inventory (Pcs)	705	1557	1023	2193	2647

Engineering Selection Recommendations

All four Murata Electronics substitute parts maintain full electrical equivalence to the AR305C334K4R across capacitance, voltage, temperature coefficient, and tolerance specifications. All parts carry AEC-Q200 automotive certification and ROHS3 compliance.

Selection between substitute options depends on mechanical fit requirements:

RCER71H334K1K1H03B and RCER71H334K1M1H03A feature 0.197" (5.00mm) lead spacing with formed leads, approximating the original 0.200" (5.08mm) spacing. These are suitable for designs with standard 5mm pitch PCB layouts.
RCER71H334K1A2H03B and RCER71H334K1DBH03A feature 0.098" (2.50mm) lead spacing with straight leads, suitable for compact PCB designs requiring reduced footprint.

Packaging format selection (bulk vs. cut tape) is determined by procurement and assembly requirements rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can RCER71H334K1A2H03B replace AR305C334K4R directly on the PCB?

A: Electrical substitution is valid. However, the lead spacing differs (0.098" vs. 0.200"), requiring PCB layout verification. Direct mechanical replacement is not possible without PCB modification.

Q: Are all substitute parts automotive-qualified?

A: Yes. All four Murata substitute parts carry AEC-Q200 certification, matching the original part's automotive qualification level.

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

A: Formed leads (RCER71H334K1K1H03B, RCER71H334K1M1H03A) are pre-bent for standard radial capacitor spacing. Straight leads (RCER71H334K1A2H03B, RCER71H334K1DBH03A) require manual bending or are used in designs with closer lead spacing.

Q: Does packaging format (bulk vs. cut tape) affect electrical performance?

A: No. Bulk and cut tape packaging contain identical components. Packaging selection is based on assembly process requirements and procurement volume.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts meet ROHS3 compliance requirements, matching the original AR305C334K4R specification.

Q: Which substitute has the highest inventory availability?

A: RCER71H334K1DBH03A has 2647 units in stock, followed by RCER71H334K1A2H03B with 2193 units.

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