CS70-B2GA331KYGKA Equivalent & Substitute Parts

Part Overview

The CS70-B2GA331KYGKA is a 330 pF ceramic capacitor manufactured by TDK Corporation, rated for 300VAC/440VAC operation with B temperature coefficient. This component is classified as a safety-rated capacitor (X1, Y2) designed for high-voltage applications requiring through-hole radial mounting. The part maintains active product status with 660 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same capacitance value, voltage rating, tolerance, and safety certifications.

Substiute Parts

CS70-B2GA331KYGKA

TDK CorporationIn Stock: 710CS70-B2GA331KYGKA Datasheet

Current PartRFQ

CS45-B2GA331K-NKA

TDK CorporationIn Stock: 1475CS45-B2GA331K-NKA Datasheet

DirectRFQ

VY2331K29Y5SS63V7

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 19985VY2331K29Y5SS63V7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS70-B2GA331KYGKA is determined by strict equivalence across the following critical parameters:

• Capacitance value: 330 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: Minimum 440VAC (the main part supports 300VAC/440VAC; substitutes must support at least 440VAC)
• Safety certifications: X1, Y2 ratings (mandatory for safety-critical applications)
• Mounting configuration: Through-hole radial with kinked formed leads
• RoHS compliance: ROHS3 Compliant (environmental and regulatory requirement)

Temperature coefficient variations (B vs. Y5S) are permitted when the operating temperature range remains within -25°C ~ 125°C or extends it. Lead spacing of 0.295" (7.50mm) is maintained across all qualified substitutes to ensure PCB compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain active product status and full ROHS3 compliance, meeting regulatory requirements for deployment in safety-critical applications.

CS45-B2GA331K-NKA (TDK Corporation): This substitute maintains identical temperature coefficient (B) and operating temperature range to the main part. Voltage rating is 440VAC, which satisfies the maximum rating of the main part. Physical dimensions differ slightly (0.256" diameter vs. 0.276" diameter), but lead spacing remains constant at 0.295" (7.50mm), ensuring PCB footprint compatibility. Inventory availability is 1370 units.

VY2331K29Y5SS63V7 (Vishay Beyschlag/Draloric/BC Components): This substitute features an extended operating temperature range (-40°C ~ 125°C) compared to the main part (-25°C ~ 125°C), providing broader thermal performance. Temperature coefficient is Y5S rather than B, which represents a different stability characteristic but remains within safety-rated specifications. Physical diameter is 0.295" (7.50mm), matching the lead spacing. Inventory availability is 19891 units, providing superior supply continuity.

Frequently Asked Questions (FAQ)

Q: Can CS45-B2GA331K-NKA be used as a direct replacement for CS70-B2GA331KYGKA?

A: Yes. Both parts share identical capacitance (330 pF), tolerance (±10%), temperature coefficient (B), operating temperature range (-25°C ~ 125°C), safety ratings (X1, Y2), and lead spacing (0.295"). The CS45 variant has a slightly smaller diameter (0.256" vs. 0.276") but maintains full PCB compatibility through identical lead spacing.

Q: What is the difference between temperature coefficient B and Y5S?

A: Temperature coefficient designates how capacitance changes with temperature. B and Y5S are different classification systems. The VY2331K29Y5SS63V7 with Y5S coefficient provides an extended operating temperature range (-40°C to 125°C) compared to the B coefficient part (-25°C to 125°C). Both are acceptable for the specified application when temperature requirements are met.

Q: Are all three parts suitable for safety-critical applications?

A: Yes. All three parts carry X1, Y2 safety ratings and ROHS3 compliance, meeting requirements for safety-critical circuit applications.

Q: Does the physical size difference affect PCB layout?

A: No. While the CS45-B2GA331K-NKA has a smaller diameter (0.256" vs. 0.276"), the critical parameter for PCB compatibility is lead spacing, which is identical at 0.295" (7.50mm) across all parts. Diameter differences do not affect mounting or electrical performance.

Q: Which substitute offers better supply availability?

A: VY2331K29Y5SS63V7 has 19891 units in stock compared to 1370 units for CS45-B2GA331K-NKA, providing significantly greater supply continuity for high-volume applications.

Q: Can voltage rating differences affect substitution?

A: The main part is rated 300VAC/440VAC. Both substitutes are rated 440VAC, which meets the maximum voltage requirement. Using a 440VAC-rated part in a 300VAC application is electrically valid and does not create overstress conditions.