BQ014D0123K Equivalent & Substitute Parts

Part Overview

The BQ014D0123K is a 0.012 µF film capacitor manufactured by KYOCERA AVX, rated for 63V DC operation with ±10% tolerance. This component features polyester metallized dielectric construction in a radial through-hole package. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers that maintain the same capacitance value and core electrical characteristics while potentially offering enhanced voltage ratings or improved availability.

Substiute Parts

BQ014D0123K

KYOCERA AVXIn Stock: 1141BQ014D0123K Datasheet

Current PartRFQ

BFC237021123

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 930BFC237021123 Datasheet

UpgradeRFQ

BFC237035123

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 967BFC237035123 Datasheet

UpgradeRFQ

BFC237051123

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1278BFC237051123 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BQ014D0123K are qualified based on the following mandatory electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Capacitance value: 0.012 µF (exact match required)
• Tolerance: ±10% (matching tolerance band)
• Dielectric material: Polyester, Metallized (same material system)
• Voltage rating: Equal to or greater than 63V DC (uprating permitted for circuit margin)

Mechanical Compatibility Criteria:

• Mounting type: Through Hole (identical)
• Package type: Radial (identical)
• Lead spacing: 0.200" (5.08mm) (identical)
• Termination: PC Pins (identical)

All three substitute parts (BFC237021123, BFC237035123, BFC237051123) from Vishay Beyschlag/Draloric/BC Components meet these criteria. They are manufactured from the same MKT370 series, maintain identical capacitance and tolerance specifications, and preserve the mechanical footprint required for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

BFC237021123 (100V DC Rating): This substitute provides a 37V voltage margin above the original 63V DC specification while maintaining identical physical dimensions and lead spacing. The part is active, ROHS3 compliant, and carries AEC-Q200 automotive qualification. The extended operating temperature range to 105°C provides additional thermal margin. This option is suitable for direct replacement in applications where the original 63V rating is adequate and space constraints are not a concern.

BFC237035123 (250V DC Rating): This substitute offers a 187V voltage margin and is packaged in Tape & Box format. It maintains the same lead spacing and radial configuration as the original part. The higher voltage rating accommodates applications requiring increased circuit margin or future design modifications. AEC-Q200 qualification and ROHS3 compliance are provided. Physical dimensions remain compatible with the original footprint.

BFC237051123 (400V DC Rating): This substitute delivers the highest voltage rating at 400V DC, providing a 337V margin above the original specification. The part is active with AEC-Q200 automotive qualification and ROHS3 compliance. Physical dimensions increase slightly (0.138" width versus 0.098" for the original), with height increasing to 0.315". Lead spacing remains at 0.200" (5.08mm), preserving board-level compatibility. This option is appropriate for high-voltage applications or designs requiring maximum voltage headroom.

All three substitutes are manufactured by Vishay Beyschlag/Draloric/BC Components from the active MKT370 series, ensuring long-term availability and consistent supply chain support compared to the obsolete BQ014D0123K.

Frequently Asked Questions (FAQ)

Q: Can BFC237021123, BFC237035123, or BFC237051123 be used as direct replacements for BQ014D0123K?

A: Yes. All three substitutes maintain identical capacitance (0.012 µF), tolerance (±10%), dielectric material (polyester metallized), mounting type (through hole radial), and lead spacing (0.200" / 5.08mm). The higher DC voltage ratings of the substitutes are compatible with circuits designed for 63V operation, as they provide uprated performance without affecting circuit function.

Q: What is the difference between the three substitute options?

A: The substitutes differ in voltage rating and physical dimensions. BFC237021123 is rated 100V DC with original dimensions. BFC237035123 is rated 250V DC with identical dimensions to BFC237021123. BFC237051123 is rated 400V DC with slightly larger dimensions (0.138" width and 0.315" height). All maintain the same 0.200" lead spacing.

Q: Are there any physical compatibility concerns when substituting these parts?

A: BFC237021123 and BFC237035123 are physically identical to the original BQ014D0123K in all critical dimensions. BFC237051123 has increased width (0.138" versus 0.098") and height (0.315" versus 0.256"), which may require PCB layout verification in space-constrained applications. Lead spacing remains unchanged at 0.200" (5.08mm) for all substitutes.

Q: What certifications do the substitute parts carry?

A: All three Vishay substitutes are ROHS3 compliant and carry AEC-Q200 automotive qualification. The original BQ014D0123K does not specify these certifications. Both REACH and ECCN classifications (EAR99) are identical across all parts.

Q: Why is the original BQ014D0123K obsolete?

A: The BQ014D0123K is listed as obsolete by KYOCERA AVX. The active MKT370 series from Vishay provides equivalent functionality with enhanced specifications and ongoing manufacturing support.

Q: Can I use a higher voltage-rated substitute in a circuit designed for 63V?

A: Yes. Using a higher voltage-rated capacitor in a lower-voltage circuit is a standard engineering practice that provides additional safety margin and reliability. The capacitance value and tolerance remain identical, ensuring circuit performance is preserved.