CK45-B3FD151KYNR Equivalent & Substitute Parts

Part Overview

The CK45-B3FD151KYNR is a 150 pF ceramic capacitor rated for 3000V (3kV) with ±10% tolerance, manufactured by TDK Corporation in the CK45 series. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The radial disc configuration with formed kinked leads supports through-hole mounting in general-purpose high-voltage circuits. Locating parametrically equivalent active alternatives ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Capacitance	150 pF
Tolerance	±10%
Voltage Rating	3000V (3kV)
Temperature Coefficient	B
Operating Temperature Range	-25°C to 105°C
Mounting Type	Through Hole
Package Type	Radial, Disc
Lead Style	Formed Leads - Kinked
Physical Diameter	0.217" (5.50mm)
Height (Seated Max)	0.374" (9.50mm)
Lead Spacing	0.295" (7.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CK45-B3FD151KYNR is determined by strict equivalence across all electrical and mechanical parameters. The three identified substitute parts—CK45-B3FD151KYGNA, CK45-B3FD151KYNNA, and CK45-B3FD151KYVNA—maintain identical specifications for capacitance (150 pF), tolerance (±10%), voltage rating (3000V), temperature coefficient (B), operating temperature range (-25°C to 105°C), and physical dimensions (0.217" diameter, 0.374" height, 0.295" lead spacing). All substitute parts are manufactured by TDK Corporation within the same CK45 series and feature the same radial disc configuration with kinked formed leads. The primary distinction among substitutes is product status: while the main part is obsolete, all three alternatives carry active status, ensuring continued availability. Packaging differs between the main part (unspecified) and substitutes (bulk), but this does not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	CK45-B3FD151KYNR (Main)	CK45-B3FD151KYGNA	CK45-B3FD151KYNNA	CK45-B3FD151KYVNA
Manufacturer	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation
Series	CK45	CK45	CK45	CK45
Capacitance	150 pF	150 pF	150 pF	150 pF
Tolerance	±10%	±10%	±10%	±10%
Voltage Rating	3000V	3000V	3000V	3000V
Temperature Coefficient	B	B	B	B
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-25°C to 105°C	-25°C to 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
Lead Style	Formed Leads - Kinked	Formed Leads - Kinked	Formed Leads - Kinked	Formed Leads - Kinked
Physical Diameter	0.217" (5.50mm)	0.217" (5.50mm)	0.217" (5.50mm)	0.217" (5.50mm)
Height (Seated Max)	0.374" (9.50mm)	0.374" (9.50mm)	0.374" (9.50mm)	0.374" (9.50mm)
Lead Spacing	0.295" (7.50mm)	0.295" (7.50mm)	0.295" (7.50mm)	0.295" (7.50mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active
Inventory Availability	989 Pcs	2657 Pcs	664 Pcs	900 Pcs

Engineering Selection Recommendations

All three substitute parts are direct parametric equivalents to the CK45-B3FD151KYNR and are suitable for replacement in applications requiring a 150 pF, 3000V ceramic capacitor with B temperature coefficient. The primary advantage of substitution is product status: all alternatives are active components, eliminating obsolescence risk associated with the main part. All substitute parts maintain ROHS3 compliance, ensuring regulatory alignment with current environmental standards. Selection among the three substitutes should be based on inventory availability and packaging requirements. CK45-B3FD151KYGNA offers the highest inventory level (2657 pcs), providing supply security for high-volume applications. CK45-B3FD151KYNNA and CK45-B3FD151KYVNA provide alternative sourcing options with 664 pcs and 900 pcs available respectively. All parts are supplied in bulk packaging and are electrically and mechanically interchangeable.

Frequently Asked Questions (FAQ)

Q: Can CK45-B3FD151KYGNA, CK45-B3FD151KYNNA, and CK45-B3FD151KYVNA be used interchangeably with CK45-B3FD151KYNR?

A: Yes. All three substitute parts are parametrically equivalent across capacitance, tolerance, voltage rating, temperature coefficient, operating temperature range, and physical dimensions. They are direct replacements for through-hole mounting applications.

Q: What is the primary reason to substitute the CK45-B3FD151KYNR?

A: The CK45-B3FD151KYNR is classified as obsolete. The three substitute parts carry active product status, ensuring long-term availability and supply chain continuity.

Q: Are there any differences in electrical performance between the main part and substitutes?

A: No. All parts share identical electrical specifications: 150 pF capacitance, ±10% tolerance, 3000V voltage rating, B temperature coefficient, and -25°C to 105°C operating range.

Q: Do the substitute parts fit the same PCB footprint?

A: Yes. All substitute parts maintain identical physical dimensions: 0.217" (5.50mm) diameter, 0.374" (9.50mm) seated height, and 0.295" (7.50mm) lead spacing. They are mechanically compatible with existing through-hole designs.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, matching the compliance status of the main part.

Q: Which substitute part should be selected for new designs?

A: Any of the three substitutes is suitable for new designs. Selection should prioritize inventory availability and supply chain preferences. CK45-B3FD151KYGNA offers the highest stock level.

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