Equivalent & Substitute Parts for 5TQ103SOFAL

Part Overview

The 5TQ103SOFAL is a 10000 pF ceramic capacitor rated at 500V with Y5V temperature coefficient, manufactured by KYOCERA AVX. This radial, disc-type capacitor is designed for general-purpose applications requiring high voltage tolerance and stable performance across a wide temperature range (-30°C to 85°C). The part is currently obsolete, making equivalent substitutes necessary for ongoing design requirements and component sourcing.

Substiute Parts

5TQ103SOFAL

KYOCERA AVXIn Stock: 7885TQ103SOFAL Datasheet

Current PartRFQ

C317C103M1U5TA

KEMETIn Stock: 3554C317C103M1U5TA Datasheet

MFR RecommendedRFQ

D103Z39Y5VL6TJ5R

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 983D103Z39Y5VL6TJ5R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5TQ103SOFAL is determined by the following critical parameters:

• Capacitance Value: Must be 10000 pF
• Voltage Rating: Minimum 500V (equal or higher acceptable)
• Temperature Coefficient: Y5V preferred for thermal stability matching
• Mounting Type: Through Hole radial configuration required
• Lead Spacing: 0.197" (5.00mm) for PCB compatibility
• Tolerance: Acceptable range must accommodate circuit requirements

Two substitute parts meet these criteria with varying compliance and availability status.

Parameter Comparison

Engineering Selection Recommendations

D103Z39Y5VL6TJ5R (Vishay Beyschlag/Draloric/BC Components) is the primary substitute. This part maintains identical capacitance, voltage rating, and temperature coefficient (Y5V) as the original 5TQ103SOFAL. The extended operating temperature range (-30°C to 125°C) provides additional thermal margin. Lead spacing matches at 0.197" (5.00mm), ensuring direct PCB compatibility. The part is active and ROHS3 compliant, supporting long-term availability and regulatory compliance.

C317C103M1U5TA (KEMET) is a secondary option only for applications where voltage derating is acceptable. This part operates at 100V, significantly below the original 500V rating. The Z5U temperature coefficient differs from the Y5V specification, resulting in different thermal stability characteristics. The operating temperature range (10°C to 85°C) is narrower than the original. Lead spacing tolerance (0.200" vs. 0.197") may require PCB layout verification. This substitute is suitable only when circuit voltage requirements are substantially lower than 500V.

Frequently Asked Questions (FAQ)

Q: Can C317C103M1U5TA replace 5TQ103SOFAL in all applications?

A: No. C317C103M1U5TA operates at 100V, which is insufficient for circuits designed for 500V operation. Use this substitute only when your circuit voltage requirement is 100V or lower. The Z5U temperature coefficient also differs from the original Y5V specification.

Q: What is the difference between Y5V and Z5U temperature coefficients?

A: Y5V and Z5U are distinct temperature coefficient classifications for ceramic capacitors. Y5V provides -30% to +50% capacitance change over -30°C to 85°C. Z5U provides -20% to +20% capacitance change over 10°C to 85°C. Temperature coefficient selection depends on circuit tolerance requirements and operating environment.

Q: Is the 0.200" lead spacing of C317C103M1U5TA compatible with 0.197" PCB holes?

A: Lead spacing tolerance of 0.003" (0.200" vs. 0.197") is within typical PCB manufacturing tolerances but requires verification. Consult your PCB design specifications and manufacturing capabilities before committing to this substitute.

Q: Why is D103Z39Y5VL6TJ5R the recommended substitute?

A: D103Z39Y5VL6TJ5R maintains all critical electrical parameters: 10000 pF capacitance, 500V voltage rating, Y5V temperature coefficient, and 0.197" lead spacing. The part is active with ROHS3 compliance, ensuring availability and regulatory alignment. The extended temperature range provides additional design margin.

Q: Can I use a higher voltage-rated capacitor as a substitute?

A: Yes. A capacitor rated above 500V can substitute for the 5TQ103SOFAL, provided all other parameters (capacitance, temperature coefficient, mounting type, lead spacing) match. Higher voltage ratings do not negatively affect circuit performance in lower-voltage applications.

Q: What is the inventory status for these substitutes?

A: D103Z39Y5VL6TJ5R has 882 pcs in stock. C317C103M1U5TA has 3506 pcs in stock. Verify current availability with your component supplier before finalizing procurement decisions.