Equivalent & Substitute Parts for 5AK121JOFAM

Part Overview

The 5AK121JOFAM is a 120 pF ceramic capacitor rated at 100V with C0G/NP0 temperature coefficient, manufactured by KYOCERA AVX. This radial, disc-type capacitor is designed for general-purpose applications with through-hole mounting. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. Substitute parts must maintain the core electrical specifications: 120 pF capacitance, 100V minimum voltage rating, and radial through-hole mounting configuration.

Substiute Parts

5AK121JOFAM

KYOCERA AVXIn Stock: 11465AK121JOFAM Datasheet

Current PartRFQ

D121G33U2JH6UJ5R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 802D121G33U2JH6UJ5R Datasheet

MFR RecommendedRFQ

D121G47U2JL6UJ5R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1130D121G47U2JL6UJ5R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5AK121JOFAM is determined by the following mandatory parameters:

• Capacitance: Must be 120 pF (exact match required)
• Voltage Rating: Must be ≥100V (equal or higher voltage rating acceptable)
• Mounting Type: Must be through-hole radial configuration
• Lead Spacing: Must be 0.197" (5.00mm) to ensure PCB compatibility
• Lead Style: Must be formed leads with kinked configuration for mechanical fit

The substitute parts listed below meet all mandatory electrical and mechanical compatibility criteria. Tolerance and temperature coefficient variations are acceptable provided the substitute maintains or improves upon the original specifications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are manufactured by Vishay Beyschlag/Draloric/BC Components and carry active product status, ensuring long-term availability and supply chain reliability. Both substitutes are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

D121G33U2JH6UJ5R provides a direct electrical equivalent at 100V rating with improved tolerance (±2% versus ±5%) and extended operating temperature range (-55°C ~ 125°C). The physical diameter is slightly smaller (8.50mm versus 9.00mm), which may provide marginal space advantages in compact layouts.

D121G47U2JL6UJ5R offers the same 120 pF capacitance with enhanced voltage rating (500V versus 100V), providing additional design margin for applications subject to voltage transients or future specification changes. The larger physical diameter (12.00mm) requires verification of available PCB space. Both substitutes maintain identical lead spacing and lead style for direct PCB compatibility.

Selection between the two substitutes depends on application voltage headroom requirements and available board space. Both are electrically and mechanically compatible with the original 5AK121JOFAM design.

Frequently Asked Questions (FAQ)

Q: Can D121G33U2JH6UJ5R and D121G47U2JL6UJ5R be used interchangeably with 5AK121JOFAM?

A: Both parts meet the mandatory substitution criteria: 120 pF capacitance, minimum 100V voltage rating, through-hole radial configuration, 5.00mm lead spacing, and kinked formed leads. Physical diameter differences (8.50mm and 12.00mm versus 9.00mm) require PCB layout verification to confirm available mounting space.

Q: What is the difference between C0G/NP0 and U2J temperature coefficients?

A: C0G/NP0 and U2J are different temperature coefficient classifications for ceramic capacitors. The original part specifies C0G/NP0. The substitute parts use U2J classification. Both are stable temperature coefficient types suitable for general-purpose applications. The substitute parts extend the operating temperature range to -55°C ~ 125°C compared to the original -30°C ~ 85°C.

Q: Does the voltage rating difference affect compatibility?

A: The original 5AK121JOFAM is rated at 100V. D121G33U2JH6UJ5R maintains 100V rating, while D121G47U2JL6UJ5R provides 500V rating. Higher voltage rating does not compromise compatibility; it provides additional design margin. Selection depends on application voltage requirements and available PCB space.

Q: Are the substitute parts available in the same packaging format?

A: D121G33U2JH6UJ5R and D121G47U2JL6UJ5R are supplied in Tape & Box (TB) packaging. The original 5AK121JOFAM packaging format is not specified in available data. Both substitutes are suitable for automated assembly processes.

Q: What compliance certifications apply to the substitute parts?

A: Both D121G33U2JH6UJ5R and D121G47U2JL6UJ5R are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8532.23.0060 HTSUS code, matching the original part's regulatory status.