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08056C105MAT2A Ceramic Capacitor 1µF 6.3V X7R 0805 Equivalent & Substitute Parts
Part Overview
The 08056C105MAT2A is a 1 µF ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient, rated for 6.3V operation in 0805 (2012 Metric) surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent capacitance, temperature coefficient, and package specifications are maintained while voltage rating and tolerance parameters may be adjusted upward to meet circuit requirements or address inventory constraints.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 1 µF |
| Voltage Rating | 6.3V |
| Tolerance | ±20% |
| Temperature Coefficient | X7R |
| Package / Case | 0805 (2012 Metric) |
| Mounting Type | Surface Mount, MLCC |
| Operating Temperature Range | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 08056C105MAT2A are qualified based on the following criteria:
Fixed Parameters (Must Match):
- Capacitance: 1 µF
- Temperature Coefficient: X7R
- Package / Case: 0805 (2012 Metric)
- Mounting Type: Surface Mount, MLCC
- Operating Temperature Range: -55°C ~ 125°C
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Variable Parameters (Allowed to Increase):
- Voltage Rating: May be rated at 10V, 16V, 25V, or 50V (higher than 6.3V original)
- Tolerance: May be ±5%, ±10%, or ±20%
All substitute parts are manufactured by KYOCERA AVX from the KGM series and maintain identical electrical performance characteristics within the X7R dielectric specification. Higher voltage ratings provide additional design margin and are electrically compatible in circuits designed for 6.3V operation.
Parameter Comparison
| Part Number | Capacitance | Voltage Rating | Tolerance | Temperature Coefficient | Package | Thickness (Max) | Inventory Status |
|---|---|---|---|---|---|---|---|
| 08056C105MAT2A | 1 µF | 6.3V | ±20% | X7R | 0805 (2012 Metric) | 0.037" (0.94mm) | 1046 Pcs |
| KGM21AR71A105JU | 1 µF | 10V | ±5% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 29980 Pcs |
| KGM21AR71A105KL | 1 µF | 10V | ±10% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 4894 Pcs |
| KGM21AR71A105MU | 1 µF | 10V | ±20% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 8811 Pcs |
| KGM21AR71C105JU | 1 µF | 16V | ±5% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 38631 Pcs |
| KGM21AR71C105KU | 1 µF | 16V | ±10% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 562499 Pcs |
| KGM21AR71C105MU | 1 µF | 16V | ±20% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 837 Pcs |
| KGM21AR71E105JU | 1 µF | 25V | ±5% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 224089 Pcs |
| KGM21AR71E105KU | 1 µF | 25V | ±10% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 267695 Pcs |
| KGM21AR71E105MU | 1 µF | 25V | ±20% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 30610 Pcs |
| KGM21AR71H105KU | 1 µF | 50V | ±10% | X7R | 0805 (2012 Metric) | 0.057" (1.45mm) | 260698 Pcs |
Engineering Selection Recommendations
All substitute parts listed maintain Active product status and ROHS3 compliance identical to the original 08056C105MAT2A. Selection between substitute options depends on circuit voltage requirements and tolerance specifications:
For circuits operating at 6.3V nominal with tolerance requirements of ±20%, KGM21AR71A105MU (10V rated) provides the closest electrical match with higher voltage margin. For applications requiring tighter tolerance control, KGM21AR71A105JU or KGM21AR71C105JU offer ±5% tolerance at 10V and 16V ratings respectively. Higher voltage ratings (16V, 25V, 50V) are suitable for circuits with voltage transients or design margin requirements exceeding the original 6.3V specification.
Physical height difference exists between the original part (0.037" maximum) and KGM series substitutes (0.057" maximum). PCB layout clearance must be verified before substitution in space-constrained applications.
Frequently Asked Questions (FAQ)
Q: Can KGM series parts with higher voltage ratings replace the 08056C105MAT2A in a 6.3V circuit?
A: Yes. Higher voltage-rated capacitors are electrically compatible in lower voltage applications. A 10V, 16V, 25V, or 50V rated capacitor operates safely in a 6.3V circuit and provides additional voltage margin against transients.
Q: What is the difference between ±5%, ±10%, and ±20% tolerance options?
A: Tolerance specifies the allowable deviation from the nominal 1 µF capacitance value. ±5% tolerance provides the tightest specification (0.95–1.05 µF), ±10% allows 0.90–1.10 µF, and ±20% allows 0.80–1.20 µF. Circuit design determines the required tolerance level.
Q: Does the increased thickness of KGM series parts affect PCB assembly?
A: KGM series substitutes have a maximum thickness of 0.057" compared to 0.037" for the original part. PCB layout must accommodate this 0.020" height difference. Verify clearance with surrounding components and solder reflow profiles before implementation.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) identical to the original 08056C105MAT2A.
Q: Which substitute part offers the best inventory availability?
A: KGM21AR71C105KU (1 µF ±10% 16V) has the highest inventory at 562,499 pieces. KGM21AR71E105KU (1 µF ±10% 25V) and KGM21AR71H105KU (1 µF ±10% 50V) also maintain substantial stock levels above 260,000 pieces.
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