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SR121C103KAATR2 Equivalent & Substitute Parts
Part Overview
The SR121C103KAATR2 is a 10000 pF ceramic capacitor rated at 100V with X7R temperature coefficient, manufactured by KYOCERA AVX in the SkyCap® SR series. This radial through-hole component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant and currently active in production with 729 units in stock.
Equivalent and substitute parts are identified when design requirements allow flexibility in physical dimensions, lead configuration, or packaging format while maintaining identical electrical performance specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 10000 pF |
| Tolerance | ±10% |
| Voltage Rating | 100V |
| Temperature Coefficient | X7R |
| Operating Temperature Range | -55°C to 125°C |
| Mounting Type | Through Hole |
| Package Type | Radial |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility is determined by matching the following core electrical parameters: capacitance value (10000 pF), tolerance (±10%), voltage rating (100V), temperature coefficient (X7R), and operating temperature range (-55°C to 125°C). All substitute parts must be through-hole radial ceramic capacitors with ROHS3 compliance.
Physical dimensions, lead spacing, lead style, and packaging format (Cut Tape, Bulk, or Tape & Reel) are secondary considerations. Substitutes are grouped by manufacturer and series, with variations in height, lead configuration, and package type noted for design integration assessment.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Series | Capacitance | Voltage | Tolerance | Temp Coeff | Operating Temp | Lead Spacing | Height (Max) | Packaging | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SR121C103KAATR2 | KYOCERA AVX | SkyCap® SR | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.200" (5.08mm) | 0.230" (5.84mm) | Cut Tape (CT) | 729 Pcs |
| SR151C103KAATR1 | KYOCERA AVX | SkyCap® SR | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.100" (2.54mm) | 0.150" (3.81mm) | Cut Tape (CT) | 8095 Pcs |
| SR151C103KAR | KYOCERA AVX | SkyCap® SR | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.100" (2.54mm) | 0.150" (3.81mm) | Bulk | 2000 Pcs |
| SR151C103KARTR1 | KYOCERA AVX | SkyCap® SR | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.100" (2.54mm) | 0.150" (3.81mm) | Cut Tape (CT) | 3195 Pcs |
| SR211C103KAATR1 | KYOCERA AVX | SkyCap® SR | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.200" (5.08mm) | 0.300" (7.62mm) | Cut Tape (CT) | 7348 Pcs |
| C317C103K1R5TA | KEMET | GoldMax 300 Comm X7R | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.200" (5.08mm) | 0.200" (5.08mm) | Bulk | 17647 Pcs |
| K103K10X7RH5TH5 | Vishay Beyschlag/Draloric/BC Components | Mono-Kap™ K | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.197" (5.00mm) | 0.244" (6.20mm) | Tape & Reel (TR) | 23494 Pcs |
| K103K10X7RH5UH5 | Vishay Beyschlag/Draloric/BC Components | Mono-Kap™ K | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.197" (5.00mm) | 0.244" (6.20mm) | Cut Tape (CT) | 13470 Pcs |
| RDER72A103K0M1H03A | Murata Electronics | RDE | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.197" (5.00mm) | 0.236" (6.00mm) | Cut Tape (CT) | 2730 Pcs |
| C315C103K1R5TA | KEMET | GoldMax 300 Comm X7R | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.100" (2.54mm) | 0.183" (4.66mm) | Bulk | 1502 Pcs |
| C315C103K1R5TA7301 | KEMET | GoldMax 300 Comm X7R | 10000 pF | 100V | ±10% | X7R | -55°C to 125°C | 0.100" (2.54mm) | 0.183" (4.66mm) | Cut Tape (CT) | 15286 Pcs |
Engineering Selection Recommendations
All listed substitute parts maintain identical electrical specifications: 10000 pF capacitance, ±10% tolerance, 100V rating, X7R temperature coefficient, and -55°C to 125°C operating range. All parts are ROHS3 compliant and active in production status.
Selection between substitutes depends on physical space constraints and lead configuration requirements:
Compact footprint (0.100" lead spacing): SR151C103KAATR1, SR151C103KAR, SR151C103KARTR1, C315C103K1R5TA, C315C103K1R5TA7301. These parts occupy minimal board space with heights ranging from 0.150" to 0.183".
Standard footprint (0.197"-0.200" lead spacing): SR121C103KAATR2, SR211C103KAATR1, C317C103K1R5TA, K103K10X7RH5TH5, K103K10X7RH5UH5, RDER72A103K0M1H03A. These parts accommodate standard PCB hole spacing with heights from 0.200" to 0.300".
Packaging format: Cut Tape (CT) packaging is suitable for automated assembly. Bulk packaging is appropriate for manual assembly or reel consolidation. Tape & Reel (TR) format is optimized for high-volume production lines.
Frequently Asked Questions (FAQ)
Q: Can SR121C103KAATR2 be replaced with SR151C103KAATR1?
A: Yes, electrically equivalent. The SR151C103KAATR1 has identical capacitance, voltage, tolerance, and temperature coefficient. Physical differences include reduced lead spacing (0.100" vs 0.200") and lower profile (0.150" vs 0.230"). Verify PCB hole spacing and clearance before substitution.
Q: What is the difference between KYOCERA AVX and KEMET substitutes?
A: Both manufacturers produce 10000 pF 100V X7R radial capacitors meeting identical electrical specifications. KYOCERA AVX SkyCap® SR series and KEMET GoldMax 300 Comm X7R series differ in physical dimensions and lead configuration. Selection is based on available board space and lead spacing requirements.
Q: Are Vishay Beyschlag K103K10X7RH5TH5 and K103K10X7RH5UH5 interchangeable?
A: Yes, electrically identical. Both are 10000 pF 100V X7R Mono-Kap™ K series capacitors with 0.197" lead spacing and 0.244" height. The primary difference is packaging: K103K10X7RH5TH5 is supplied in Tape & Reel format, while K103K10X7RH5UH5 is Cut Tape.
Q: Does lead style affect substitution eligibility?
A: Lead style (straight, formed, or kinked) affects mechanical fit and assembly process but does not impact electrical performance. Verify that the selected lead configuration is compatible with your PCB hole pattern and assembly equipment.
Q: Can I substitute a part with different lead spacing?
A: Lead spacing substitution requires PCB redesign or use of adapter techniques. If your design specifies 0.200" spacing, parts with 0.100" spacing require modified hole patterns. Evaluate board layout constraints before selecting a substitute with different lead spacing.
Q: What does ROHS3 compliance mean for substitution?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. All listed substitutes are ROHS3 compliant, ensuring regulatory equivalence for applications requiring hazardous substance restrictions.
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