SR151C331KAA Equivalent & Substitute Parts

Part Overview

The SR151C331KAA is a 330 pF ±10% 100V ceramic capacitor with X7R temperature coefficient manufactured by KYOCERA AVX in the SkyCap® SR series. This radial through-hole component is designed for general-purpose applications across industrial and commercial electronics. The part is currently obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±10%
Voltage Rating	100V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.100" (2.54mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SR151C331KAA is determined by strict equivalence in the following parameters: capacitance value (330 pF), tolerance (±10%), voltage rating (100V minimum), temperature coefficient (X7R), operating temperature range (-55°C to 125°C), mounting type (through hole), and package configuration (radial). Physical dimensions and lead spacing must accommodate PCB layout constraints. All substitute parts must maintain ROHS3 compliance and EAR99 export classification.

Substitutes are grouped into three categories:

Direct Equivalents (Same Voltage Rating): Parts with identical electrical specifications and 100V voltage rating, differing only in packaging format or lead configuration.

Upgraded Alternatives (Higher Voltage Rating): Parts with 200V voltage rating that provide enhanced voltage margin while maintaining all other electrical parameters. These are suitable for designs requiring increased safety margin.

Cross-Manufacturer Equivalents: Parts from alternative manufacturers (Vishay Beyschlag/Draloric/BC Components) meeting identical electrical and mechanical specifications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Lead Style	Height (Max)	Product Status
SR151C331KAA	KYOCERA AVX	330 pF	100V	±10%	X7R	Straight	0.150" (3.81mm)	Obsolete
SR071C331KAATR1	KYOCERA AVX	330 pF	100V	±10%	X7R	Formed Leads - Kinked	0.100" (2.54mm)	Active
SR071C331KAATR2	KYOCERA AVX	330 pF	100V	±10%	X7R	Formed Leads - Kinked	0.100" (2.54mm)	Active
SR071C331KARTR2	KYOCERA AVX	330 pF	100V	±10%	X7R	Formed Leads - Kinked	0.100" (2.54mm)	Active
SR072C331KAAAP2	KYOCERA AVX	330 pF	200V	±10%	X7R	Formed Leads - Kinked	0.100" (2.54mm)	Active
SR072C331KAATR1	KYOCERA AVX	330 pF	200V	±10%	X7R	Formed Leads - Kinked	0.100" (2.54mm)	Active
SR152C331KAATR2	KYOCERA AVX	330 pF	200V	±10%	X7R	Straight	0.150" (3.81mm)	Active
SR121C331KAA	KYOCERA AVX	330 pF	100V	±10%	X7R	Formed Leads	0.100" (2.54mm)	Active
SR151C331KAR	KYOCERA AVX	330 pF	100V	±10%	X7R	Straight	0.150" (3.81mm)	Active
K331K10X7RH53L2	Vishay Beyschlag/Draloric/BC Components	330 pF	100V	±10%	X7R	Straight	0.205" (5.20mm)	Active
K331K15X7RH53L2	Vishay Beyschlag/Draloric/BC Components	330 pF	100V	±10%	X7R	Straight	0.220" (5.60mm)	Active

Engineering Selection Recommendations

For Direct Replacement (100V Rating): SR151C331KAR provides parametric equivalence with identical electrical specifications and straight lead configuration. This part is active and ROHS3 compliant, making it the primary choice for designs requiring exact voltage rating match.

For Packaging Flexibility (100V Rating): SR071C331KAATR1, SR071C331KAATR2, and SR071C331KARTR2 offer active alternatives with formed leads and reduced height (0.100" vs. 0.150"), suitable for space-constrained layouts. All maintain 100V rating and ROHS3 compliance.

For Voltage Margin Enhancement: SR072C331KAAAP2, SR072C331KAATR1, and SR152C331KAATR2 provide 200V rating while maintaining 330 pF capacitance and ±10% tolerance. These are appropriate for designs where increased voltage headroom is beneficial. SR152C331KAATR2 matches the original straight lead configuration.

For Cross-Manufacturer Sourcing: K331K10X7RH53L2 and K331K15X7RH53L2 from Vishay Beyschlag/Draloric/BC Components meet identical electrical specifications. Physical dimensions differ slightly; verify PCB layout compatibility before selection.

All recommended substitutes are active products with ROHS3 compliance and EAR99 classification, ensuring regulatory compliance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SR151C331KAA be replaced with a 200V rated part? A: Yes. Parts rated for 200V (SR072C331KAAAP2, SR072C331KAATR1, SR152C331KAATR2) are electrically compatible. The higher voltage rating provides additional safety margin without affecting circuit performance at 100V operation.

Q: What is the difference between straight and formed leads? A: Straight leads maintain fixed spacing for through-hole insertion. Formed leads (kinked) are pre-bent for automatic insertion equipment. Both configurations are mechanically and electrically equivalent; selection depends on assembly process requirements.

Q: Are Vishay K-series parts compatible with KYOCERA AVX SkyCap SR parts? A: Yes, K331K10X7RH53L2 and K331K15X7RH53L2 meet identical electrical specifications (330 pF, ±10%, 100V, X7R). Physical dimensions vary slightly; verify lead spacing and height clearance on your PCB layout.

Q: What does packaging format (Bulk vs. Tape & Reel) affect? A: Packaging format affects order quantity and handling but not electrical or mechanical performance. Bulk packaging suits small quantities; Tape & Reel suits automated assembly processes.

Q: Is the SR151C331KAR a direct equivalent? A: Yes. SR151C331KAR is parametrically equivalent with identical capacitance, voltage, tolerance, temperature coefficient, and lead configuration. It differs only in packaging (Bulk vs. original format) and is currently active.

Q: Can I use SR121C331KAA as a substitute? A: SR121C331KAA is electrically equivalent but has different lead spacing (0.200" vs. 0.100") and physical dimensions. Use only if PCB layout accommodates the larger footprint.

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