SR325C105MAT Equivalent & Substitute Parts

Part Overview

The SR325C105MAT is a 1 µF ±20% 50V ceramic capacitor with X7R temperature coefficient manufactured by KYOCERA AVX in the SkyCap® SR series. This through-hole radial component operates across -55°C to 125°C and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, temperature coefficient, tolerance) and mechanical compatibility (mounting type, lead spacing, package case).

Key Parameters

Parameter	SR325C105MAT
Capacitance	1 µF
Tolerance	±20%
Voltage - Rated	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.200" (5.08mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Electrical Equivalents: Parts with identical capacitance (1 µF), voltage rating (50V), temperature coefficient (X7R), and operating temperature range (-55°C ~ 125°C). These parts maintain the same electrical performance characteristics.

Tolerance Variations: Parts with tighter tolerance specifications (±10% or ±5%) are classified as upgrades and are electrically compatible with the SR325C105MAT, as they meet or exceed the original ±20% tolerance requirement.

Mechanical Compatibility: All substitute parts share through-hole radial mounting, 0.200" (5.08mm) lead spacing, and ROHS3 compliance. Physical dimensions and lead styles may vary within the radial package envelope.

Packaging Formats: Substitutes are available in Bulk and Cut Tape (CT) packaging. Packaging format does not affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Op Temp Range	Size (L x W)	Height Max	Lead Style	Packaging	Inventory
SR325C105MAT	KYOCERA AVX	1 µF	±20%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	9.91mm	Formed Leads - Kinked	Bulk	752 Pcs
SR215C105MAR	KYOCERA AVX	1 µF	±20%	50V	X7R	-55°C ~ 125°C	5.08mm x 3.18mm	5.08mm	Formed Leads - Kinked	Bulk	1798 Pcs
SR305C105MAA	KYOCERA AVX	1 µF	±20%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	7.62mm	Straight	Bulk	2006 Pcs
SR305C105MAR	KYOCERA AVX	1 µF	±20%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	7.62mm	Straight	Bulk	1666 Pcs
SR305C105MARTR1	KYOCERA AVX	1 µF	±20%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	9.14mm	Straight	Cut Tape (CT)	2318 Pcs
SR215C105JAR	KYOCERA AVX	1 µF	±5%	50V	X7R	-55°C ~ 125°C	5.08mm x 3.18mm	7.62mm	Formed Leads - Kinked	Bulk	1687 Pcs
SR215C105KARTR1	KYOCERA AVX	1 µF	±10%	50V	X7R	-55°C ~ 125°C	5.08mm x 3.18mm	7.62mm	Formed Leads - Kinked	Cut Tape (CT)	3562 Pcs
SR305C105KAA	KYOCERA AVX	1 µF	±10%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.18mm	7.62mm	Straight	Bulk	1267 Pcs
SR325C105KAA	KYOCERA AVX	1 µF	±10%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	9.91mm	Formed Leads - Kinked	Bulk	1900 Pcs
SR655C105KAATR1	KYOCERA AVX	1 µF	±10%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	10.16mm	Formed Leads - Kinked	Cut Tape (CT)	2417 Pcs
SR655C105KARTR1	KYOCERA AVX	1 µF	±10%	50V	X7R	-55°C ~ 125°C	7.62mm x 3.81mm	10.16mm	Formed Leads - Kinked	Cut Tape (CT)	2761 Pcs

Engineering Selection Recommendations

Direct Electrical Equivalents (Same Tolerance ±20%): SR215C105MAR, SR305C105MAA, SR305C105MAR, and SR305C105MARTR1 provide identical electrical performance to the SR325C105MAT. Selection among these depends on physical space constraints and lead configuration requirements. SR215C105MAR offers the smallest footprint (5.08mm x 3.18mm). SR305C105MAA and SR305C105MAR maintain the same length as the original (7.62mm) with reduced height. SR305C105MARTR1 is available in Cut Tape packaging for automated assembly.

Upgraded Tolerance Parts (±10% or ±5%): SR215C105JAR (±5%), SR215C105KARTR1 (±10%), SR305C105KAA (±10%), SR325C105KAA (±10%), SR655C105KAATR1 (±10%), and SR655C105KARTR1 (±10%) are electrically compatible upgrades. These parts meet tighter tolerance specifications and are suitable for applications requiring improved capacitance accuracy. All parts maintain ROHS3 compliance and the same operating temperature range.

Packaging Considerations: Bulk packaging is suitable for manual assembly and prototyping. Cut Tape (CT) packaging is specified for high-volume automated production environments.

Lead Configuration: Formed leads with kinked style are present in SR325C105MAT, SR215C105MAR, SR215C105JAR, SR215C105KARTR1, SR325C105KAA, SR655C105KAATR1, and SR655C105KARTR1. Straight lead style is present in SR305C105MAA, SR305C105MAR, SR305C105MARTR1, and SR305C105KAA. Lead style selection depends on PCB hole pattern and assembly method.

Frequently Asked Questions (FAQ)

Q: Can SR215C105MAR replace SR325C105MAT directly? A: Yes, electrically. SR215C105MAR has identical capacitance (1 µF), tolerance (±20%), voltage rating (50V), and temperature coefficient (X7R). However, it has a smaller physical footprint (5.08mm x 3.18mm vs. 7.62mm x 3.81mm). Verify PCB hole spacing and layout compatibility before substitution.

Q: What is the difference between ±20% and ±10% tolerance parts? A: Tolerance specifies the allowable deviation from the nominal capacitance value. ±20% tolerance allows capacitance to range from 0.8 µF to 1.2 µF. ±10% tolerance restricts the range to 0.9 µF to 1.1 µF. ±10% parts are suitable for applications requiring tighter capacitance control. Both are electrically compatible with the SR325C105MAT.

Q: Are Cut Tape (CT) packaged parts compatible with bulk-packaged designs? A: Yes. Cut Tape packaging is a delivery format for automated assembly lines. The electrical and mechanical specifications are identical to bulk-packaged equivalents. Use Cut Tape versions for high-volume production; use Bulk for manual assembly or low-volume applications.

Q: Can I use SR305C105KAA (straight leads) instead of SR325C105MAT (kinked leads)? A: Yes, electrically and mechanically. Both have identical capacitance, voltage, and temperature specifications. Straight leads may require different PCB hole positioning compared to kinked leads. Verify PCB design compatibility before substitution.

Q: Why are some substitute parts taller (10.16mm) than the original (9.91mm)? A: Height variation occurs due to manufacturing tolerances and lead forming processes. SR655C105KAATR1 and SR655C105KARTR1 have maximum heights of 10.16mm. Verify clearance above the PCB before substitution if space is constrained.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All parts listed are ROHS3 compliant and REACH unaffected, matching the environmental compliance of SR325C105MAT.

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