C317C109C5G5TA Equivalent & Substitute Parts

Part Overview

The C317C109C5G5TA is a 1 pF ceramic capacitor manufactured by KEMET from the GoldMax 300 Comm C0G series. This radial through-hole component operates at 50V with C0G/NP0 temperature coefficient and ±0.25pF tolerance. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across capacitance, voltage rating, temperature coefficient, and mechanical form factor while meeting current availability and compliance requirements.

Substiute Parts

C317C109C5G5TA

KEMETIn Stock: 745C317C109C5G5TA Datasheet

Current PartRFQ

C317C109D5G5TA

KEMETIn Stock: 880C317C109D5G5TA Datasheet

DirectRFQ

SR211A1R0CARTR1

KYOCERA AVXIn Stock: 933SR211A1R0CARTR1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the C317C109C5G5TA is based on the following allowed parameters:

Primary Substitution Criteria:

• Capacitance value must equal 1 pF
• Temperature coefficient must be C0G or NP0
• Voltage rating must be ≥50V
• Mounting type must be through-hole radial
• Lead spacing must be 0.200" (5.08mm)
• Operating temperature range must encompass -55°C to 125°C
• RoHS3 compliance required

Substitute Parts Identified:

1. C317C109D5G5TA (KEMET) – Direct series alternative with relaxed tolerance (±0.5pF vs ±0.25pF). Same voltage, temperature coefficient, and mechanical specifications. Active product status provides superior long-term availability.

2. SR211A1R0CARTR1 (KYOCERA AVX) – Cross-manufacturer substitute with enhanced voltage rating (100V vs 50V). Maintains 1 pF capacitance, C0G/NP0 coefficient, and through-hole radial form factor. Tighter tolerance (±0.25pF) matches original specification. Larger physical dimensions (0.200" L x 0.125" W vs 0.150" L x 0.100" W) require PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

C317C109D5G5TA (KEMET) is the primary recommended substitute. This part maintains identical electrical specifications (1 pF, 50V, C0G/NP0) and mechanical form factor as the obsolete C317C109C5G5TA. The only variance is tolerance relaxation from ±0.25pF to ±0.5pF, which remains within acceptable precision for general-purpose applications. Active product status ensures sustained availability and supply chain stability. ROHS3 compliance and identical lead spacing (0.200") enable direct PCB footprint compatibility without layout modification.

SR211A1R0CARTR1 (KYOCERA AVX) serves as a secondary substitute for applications requiring enhanced voltage margin. The 100V rating provides 2x safety factor over the original 50V specification. Tolerance remains at ±0.25pF, matching original precision. However, increased physical dimensions (0.200" L x 0.125" W vs 0.150" L x 0.100" W) and greater seated height (0.300" vs 0.200") necessitate PCB layout verification to confirm clearance compatibility. Lead spacing remains at 0.200", preserving hole-to-hole alignment. ROHS3 compliance and active product status support long-term procurement.

Selection between these substitutes depends on circuit voltage margin requirements and available PCB space. Both parts satisfy core electrical and compliance criteria.

Frequently Asked Questions (FAQ)

Q: Can C317C109D5G5TA directly replace C317C109C5G5TA without PCB modification?

A: Yes. Both parts share identical mechanical specifications (0.150" L x 0.100" W, 0.200" lead spacing, 0.200" seated height) and electrical characteristics (1 pF, 50V, C0G/NP0). The tolerance difference (±0.5pF vs ±0.25pF) does not affect physical compatibility. No PCB layout changes are required.

Q: What is the primary difference between the two KEMET substitutes?

A: C317C109D5G5TA differs from the obsolete C317C109C5G5TA only in tolerance specification (±0.5pF vs ±0.25pF). All other parameters—capacitance, voltage, temperature coefficient, dimensions, and lead spacing—are identical. The relaxed tolerance reflects the active product line specification.

Q: Can SR211A1R0CARTR1 be used in place of C317C109C5G5TA?

A: Electrical substitution is valid. Both parts provide 1 pF capacitance with C0G/NP0 temperature coefficient across -55°C to 125°C. The SR211A1R0CARTR1 offers higher voltage rating (100V vs 50V). However, physical dimensions differ: SR211A1R0CARTR1 measures 0.200" L x 0.125" W with 0.300" seated height, compared to 0.150" L x 0.100" W with 0.200" seated height. PCB layout verification is required to confirm clearance compatibility before substitution.

Q: Does lead spacing compatibility guarantee PCB footprint compatibility?

A: Lead spacing (0.200") is identical across all three parts, ensuring hole-to-hole alignment. However, body dimensions and seated height differ between C317C109C5G5TA/D5G5TA and SR211A1R0CARTR1. Verify available PCB space, particularly for height clearance near adjacent components or solder mask features, before selecting SR211A1R0CARTR1.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. C317C109D5G5TA, SR211A1R0CARTR1, and the original C317C109C5G5TA all carry ROHS3 Compliant status. All parts are REACH Unaffected and classified under ECCN EAR99.

Q: What is the significance of the C0G/NP0 temperature coefficient for substitution?

A: C0G and NP0 designations are equivalent specifications indicating minimal capacitance change across the operating temperature range (-55°C to 125°C). This stability is critical for precision circuits. All substitute parts maintain this specification, ensuring thermal performance equivalence.

Q: Why is product status relevant to substitution selection?

A: The original C317C109C5G5TA is obsolete, creating supply discontinuity risk. Both substitutes carry Active status, indicating current manufacturing and sustained availability. Active status supports long-term production schedules and reduces procurement risk.