SR155C331KAATR2 Equivalent & Substitute Parts

Part Overview

The SR155C331KAATR2 is a 330 pF ceramic capacitor rated at 50V with X7R temperature coefficient, manufactured by KYOCERA AVX in the SkyCap® SR series. This through-hole radial component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active and in stock with RoHS3 compliance. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific packaging configurations.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Style	Straight
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SR155C331KAATR2 is determined by matching the following electrical and mechanical parameters:

Capacitance value: 330 pF
Tolerance: ±10%
Voltage rating: 50V minimum
Temperature coefficient: X7R
Operating temperature range: -55°C to 125°C minimum
Mounting type: Through Hole
Package type: Radial

Physical dimensions, lead spacing, and lead style variations are permitted within the constraints of the application's PCB layout and assembly process. All substitute parts must maintain RoHS3 compliance and active product status.

Parameter Comparison

Parameter	SR155C331KAATR2 (KYOCERA AVX)	K331K15X7RF5TH5 (Vishay)	K331K15X7RF5TL2 (Vishay)	RDER71H331K0K1H03B (Murata)
Capacitance	330 pF	330 pF	330 pF	330 pF
Tolerance	±10%	±10%	±10%	±10%
Voltage Rating	50V	50V	50V	50V
Temperature Coefficient	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
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial	Radial	Radial	Radial
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active	Active
Lead Spacing	0.100" (2.54mm)	0.197" (5.00mm)	0.098" (2.50mm)	0.197" (5.00mm)
Lead Style	Straight	Formed Leads	Straight	Formed Leads - Kinked
Height - Seated (Max)	0.150" (3.81mm)	0.260" (6.60mm)	0.220" (5.60mm)	0.236" (6.00mm)

Engineering Selection Recommendations

All listed substitute parts meet the core electrical requirements for direct functional replacement of the SR155C331KAATR2. Selection among substitutes should be based on:

Lead Spacing Compatibility: The SR155C331KAATR2 features 0.100" (2.54mm) lead spacing. The K331K15X7RF5TL2 maintains this spacing with straight leads, providing the closest mechanical match for direct PCB hole alignment. The K331K15X7RF5TH5 and RDER71H331K0K1H03B feature 0.197" (5.00mm) lead spacing and require PCB layout modification.

Lead Style: The SR155C331KAATR2 uses straight leads. The K331K15X7RF5TL2 also features straight leads. The K331K15X7RF5TH5 and RDER71H331K0K1H03B use formed or kinked leads, which may require different insertion and soldering procedures.

Height Clearance: The SR155C331KAATR2 has a maximum seated height of 0.150" (3.81mm). Substitute parts range from 0.220" to 0.260" in height. Verify clearance in applications with height constraints.

Packaging and Inventory: K331K15X7RF5TL2 offers the highest inventory availability (33,820 pcs) in Cut Tape packaging. RDER71H331K0K1H03B is available in Bulk packaging (1,441 pcs). All parts maintain active product status and RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can K331K15X7RF5TH5 be used as a direct replacement for SR155C331KAATR2?

A: K331K15X7RF5TH5 matches all electrical specifications (330 pF, ±10%, 50V, X7R, -55°C to 125°C). However, it features 0.197" (5.00mm) lead spacing versus the original 0.100" (2.54mm), and formed leads instead of straight leads. PCB modification is required for mechanical compatibility.

Q: Which substitute has the closest physical compatibility?

A: K331K15X7RF5TL2 provides the closest match with 0.098" (2.50mm) lead spacing (nearest to the original 0.100"), straight leads, and lower seated height (0.220" vs. 0.260" for other substitutes). This part requires minimal PCB layout adjustment.

Q: Are all substitutes RoHS3 compliant?

A: Yes. SR155C331KAATR2, K331K15X7RF5TH5, K331K15X7RF5TL2, and RDER71H331K0K1H03B are all RoHS3 compliant with REACH Unaffected status.

Q: What is the difference between Cut Tape and Bulk packaging?

A: Cut Tape (CT) packaging is supplied on continuous tape cut to specific lengths, suitable for automated assembly. Bulk packaging contains loose components. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Can I use a substitute with different lead spacing on the same PCB?

A: No. Different lead spacing requires PCB redesign. The original PCB holes are positioned for 0.100" spacing. Substitutes with 0.197" or 0.098" spacing cannot be inserted into holes designed for the original spacing without modification.

Q: Are there temperature or voltage derating considerations between substitutes?

A: No. All substitutes share identical electrical ratings: 330 pF capacitance, ±10% tolerance, 50V voltage rating, X7R temperature coefficient, and -55°C to 125°C operating range. No derating is required when substituting between these parts.

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