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08055C102KAT2M Equivalent & Substitute Parts
Part Overview
The 08055C102KAT2M is a 1000 pF ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient, rated for 50V operation. This surface mount multilayer ceramic capacitor (MLCC) in 0805 (2012 Metric) package is designed for general purpose applications across industrial and commercial electronics. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to address inventory availability, voltage rating upgrades, temperature coefficient variations, and automotive-grade alternatives while maintaining core electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 1000 pF |
| Tolerance | ±10% |
| Voltage Rating | 50V |
| Temperature Coefficient | X7R |
| Operating Temperature Range | -55°C to 125°C |
| Package / Case | 0805 (2012 Metric) |
| Mounting Type | Surface Mount, MLCC |
| Physical Dimensions | 0.079" L × 0.049" W (2.01mm × 1.25mm) |
| Maximum Thickness | 0.037" (0.94mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 08055C102KAT2M is determined by the following critical parameters: capacitance value (1000 pF), package format (0805), mounting type (surface mount), and physical footprint compatibility. Substitute parts are grouped into four categories based on allowed variations:
Category 1: Voltage Rating Upgrade (Same X7R, Higher Voltage) The 0805PC102KAT1A provides identical capacitance and tolerance with elevated 250V rating, suitable for applications requiring higher voltage margin while maintaining X7R temperature stability.
Category 2: Automotive-Grade Equivalent (AEC-Q200 Certified) The KAM21BR71H102KT matches all electrical specifications of the original part with AEC-Q200 automotive qualification, enabling use in automotive and high-reliability applications.
Category 3: C0G/NP0 Temperature Coefficient Variants Parts KGM21BCG1H102FT, KGM21BCG1H102GT, and KGM21BCG1H102KT provide superior temperature stability with C0G/NP0 coefficient at 50V, with tolerance options of ±1%, ±2%, and ±10% respectively.
Category 4: Voltage and Temperature Coefficient Combinations Parts KGM21BCG2A102FT, KGM21BCG2A102GT, and KGM21BCG2A102KT offer C0G/NP0 stability at elevated 100V rating with matching tolerance options.
Category 5: Extended Temperature Range (X8R Coefficient) The KGM21BR81H102KT maintains X7R-equivalent performance with X8R coefficient, extending operating temperature to 150°C for high-temperature applications.
Category 6: Tighter Tolerance X7R Variant The KGM21NR71H102JM provides ±5% tolerance with X7R coefficient at 50V, offering improved capacitance stability compared to the ±10% original specification.
Parameter Comparison
| Part Number | Manufacturer | Capacitance | Tolerance | Voltage | Temp Coeff | Op Temp Range | Package | Thickness (Max) | Inventory |
|---|---|---|---|---|---|---|---|---|---|
| 08055C102KAT2M | KYOCERA AVX | 1000 pF | ±10% | 50V | X7R | -55°C to 125°C | 0805 | 0.037" | 773 Pcs |
| 0805PC102KAT1A | KYOCERA AVX | 1000 pF | ±10% | 250V | X7R | -55°C to 125°C | 0805 | 0.051" | 1069 Pcs |
| KAM21BR71H102KT | KYOCERA AVX | 1000 pF | ±10% | 50V | X7R | -55°C to 125°C | 0805 | 0.037" | 14502 Pcs |
| KGM21BCG1H102FT | KYOCERA AVX | 1000 pF | ±1% | 50V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 155542 Pcs |
| KGM21BCG1H102GT | KYOCERA AVX | 1000 pF | ±2% | 50V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 7526 Pcs |
| KGM21BCG1H102KT | KYOCERA AVX | 1000 pF | ±10% | 50V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 16216 Pcs |
| KGM21BCG2A102FT | KYOCERA AVX | 1000 pF | ±1% | 100V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 11450 Pcs |
| KGM21BCG2A102GT | KYOCERA AVX | 1000 pF | ±2% | 100V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 12604 Pcs |
| KGM21BCG2A102KT | KYOCERA AVX | 1000 pF | ±10% | 100V | C0G/NP0 | -55°C to 125°C | 0805 | 0.037" | 7045 Pcs |
| KGM21BR81H102KT | KYOCERA AVX | 1000 pF | ±10% | 50V | X8R | -55°C to 150°C | 0805 | 0.037" | 11605 Pcs |
| KGM21NR71H102JM | KYOCERA AVX | 1000 pF | ±5% | 50V | X7R | -55°C to 125°C | 0805 | 0.039" | 11049 Pcs |
Engineering Selection Recommendations
Direct Replacement (Identical Specifications): KAM21BR71H102KT serves as a direct replacement with identical electrical and mechanical specifications. This part carries AEC-Q200 automotive qualification, making it suitable for both general purpose and automotive applications. Inventory availability is significantly higher (14502 pcs vs. 773 pcs).
Voltage Margin Applications: 0805PC102KAT1A is selected when circuit design requires higher voltage headroom. The 250V rating provides five-fold voltage margin over the original 50V specification while maintaining identical capacitance and tolerance. Physical thickness increases to 0.051" maximum, requiring PCB layout verification.
Temperature Stability Priority: KGM21BCG1H102FT, KGM21BCG1H102GT, and KGM21BCG1H102KT provide C0G/NP0 temperature coefficient, delivering superior capacitance stability across the -55°C to 125°C operating range compared to X7R. Selection depends on tolerance requirement: ±1% (FT), ±2% (GT), or ±10% (KT). All three maintain 50V rating and 0805 package compatibility.
Extended Voltage with Stability: KGM21BCG2A102FT, KGM21BCG2A102GT, and KGM21BCG2A102KT combine C0G/NP0 stability with 100V rating. These parts are specified when both temperature stability and voltage margin are required. Tolerance options match the 50V C0G variants.
High-Temperature Applications: KGM21BR81H102KT extends operating temperature to 150°C using X8R coefficient while maintaining 50V rating and ±10% tolerance. This part is selected for thermal environments exceeding the standard 125°C limit.
Improved Tolerance: KGM21NR71H102JM provides ±5% tolerance with X7R coefficient at 50V, offering a middle ground between the original ±10% specification and the tighter ±1%/±2% C0G options. Physical thickness increases marginally to 0.039" maximum.
All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 0805 package footprint compatibility with the original 08055C102KAT2M.
Frequently Asked Questions (FAQ)
Q: Can KAM21BR71H102KT be used as a direct drop-in replacement for 08055C102KAT2M? A: Yes. KAM21BR71H102KT matches all electrical specifications (1000 pF, ±10%, 50V, X7R) and physical dimensions (0805 package, 0.037" maximum thickness). The primary difference is AEC-Q200 automotive qualification, which adds reliability assurance without affecting general purpose applications.
Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance variation across -55°C to 125°C. C0G/NP0 provides ±30 ppm/°C, resulting in significantly tighter capacitance stability. C0G/NP0 is specified for precision circuits requiring stable capacitance across temperature extremes.
Q: Can 0805PC102KAT1A replace 08055C102KAT2M in a 50V circuit? A: Yes, electrically and mechanically. The 250V rating is a superset of the 50V requirement. However, physical thickness increases from 0.037" to 0.051", requiring PCB layout verification to ensure clearance with adjacent components or solder mask patterns.
Q: Which substitute part has the highest inventory availability? A: KGM21BCG1H102FT (C0G/NP0, ±1%, 50V) has the highest inventory at 155,542 pcs, followed by KGM21BCG1H102KT (C0G/NP0, ±10%, 50V) at 16,216 pcs.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 (unlimited moisture sensitivity) rating, matching the original part's environmental certifications.
Q: What is the maximum operating temperature for KGM21BR81H102KT? A: KGM21BR81H102KT operates to 150°C due to X8R temperature coefficient, compared to 125°C for X7R variants. This 25°C extension is suitable for high-temperature environments such as automotive engine compartments or industrial heating applications.
Q: Can tolerance be mixed in a design using substitute parts? A: Tolerance selection depends on circuit requirements. For general purpose applications, ±10% tolerance is acceptable. For precision circuits, ±1% or ±2% C0G/NP0 parts are specified. Mixing tolerances within the same circuit requires circuit analysis to confirm performance margins.
Q: Is KGM21NR71H102JM compatible with the original PCB footprint? A: Yes, footprint compatible. Physical thickness increases marginally from 0.037" to 0.039" maximum, which does not affect standard PCB assembly processes or component clearances.
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