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RC1/2220KTB
Kamaya Inc.
RES 22 OHM 10% 1/2W AXIAL
37610 Pcs New Original In Stock
22 Ohms ±10% 0.5W, 1/2W Through Hole Resistor Axial Carbon Composition
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (489 Ratings)
RC1/2220KTB
Product Overview
9212077
DiGi Electronics Part Number
RC1/2220KTB-DGManufacturer
Kamaya Inc.
RC1/2220KTB
Description
RES 22 OHM 10% 1/2W AXIALInventory
37610 Pcs New Original In Stock
22 Ohms ±10% 0.5W, 1/2W Through Hole Resistor Axial Carbon Composition
Quantity
Minimum 1
Minimum 1
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RC1/2220KTB Technical Specifications
Category
Through Hole Resistors
Packaging
-
Series
RC
Product Status
Obsolete
Resistance
22 Ohms
Tolerance
±10%
Power (Watts)
0.5W, 1/2W
Composition
Carbon Composition
Features
-
Temperature Coefficient
-
Operating Temperature
-55°C ~ 125°C
Package / Case
Axial
Supplier Device Package
Axial
Size / Dimension
0.142" Dia x 0.374" L (3.60mm x 9.50mm)
Height - Seated (Max)
-
Number of Terminations
2
Failure Rate
-
Datasheet & Documents
HTML Datasheet
RC1/2220KTB-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
Not Applicable
ECCN
EAR99
HTSUS
8533.10.0060
Additional Information
Other Names
2315-RC1/2220KTB
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Their products' durability and precision have greatly enhanced the reliability of my DIY builds.
Dec 02, 2025
Their after-sales team provides detailed guidance, making sure I got the most out of my purchase.
Dec 02, 2025
Their after-sales team was proactive and resolved my issues efficiently.
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Frequently Asked Questions (FAQ)
Can RC1/2220KTB be used in high-surge applications, and how does its carbon composition affect pulse handling compared to metal film resistors like Dale CR050?
Yes, the RC1/2220KTB is well-suited for high-surge applications due to its carbon composition construction, which provides superior pulse energy absorption compared to metal film resistors such as the Dale CR050. Unlike metal film types that can fail open under transient overloads, the RC1/2220KTB’s bulk carbon core dissipates surge energy more effectively through thermal mass and distributed resistance. This makes it a preferred choice in legacy power supplies, tube amplifiers, or snubbing circuits where voltage spikes are common. However, designers should verify that the pulse duration and repetition rate stay within safe operating limits since the RC1/2220KTB lacks detailed pulse derating curves in the manufacturer's datasheet due to its obsolete status.
Is RC1/2220KTB a viable last-time buy replacement for aging RC series resistors in military or aerospace repair systems, considering its obsolete status?
The RC1/2220KTB can serve as a last-time buy option for repairing legacy military or aerospace systems designed around the Kamaya RC series, but designers must account for long-term availability risks. Since the RC1/2220KTB is marked as obsolete, there is no production replenishment, making lifecycle support uncertain. For critical repairs, it's advisable to qualify alternatives like the SR2220-22R from Stackpole or the CFR-50JB-22R0 from Vishay, which offer similar resistance, power rating, and axial lead form—though these alternatives are metal carbon film and may not handle surge duty as robustly. Always validate substitution through environmental and lifetime stress testing.
How does the RC1/2220KTB perform in long-term high-temperature environments above 85°C, and what are the reliability risks if operated near its 125°C limit?
The RC1/2220KTB is rated for continuous operation up to 125°C, but as a carbon composition resistor, it is prone to increased resistance drift over time when operated near its thermal limits. Unlike modern metal oxide or thin-film resistors, carbon composition types exhibit higher sensitivity to heat-induced degradation, especially in humid or corrosive environments. Operating the RC1/2220KTB above 85°C without adequate derating increases the risk of permanent value shift (>10%) and crack formation in the resistive element. To mitigate failure risk, derate power to 30–40% of the 0.5W rating above 85°C and consider conformal coating to protect against mechanical and environmental stress.
Can RC1/2220KTB replace metal film resistors like RC1206FC22R0 in precision circuits where stability is critical?
No, the RC1/2220KTB is not a suitable replacement for precision metal film resistors such as the RC1206FC22R0 in stability-critical circuits. Despite matching the 22 Ω value and close tolerance, the RC1/2220KTB uses carbon composition technology, which exhibits poor long-term stability, higher noise, and significant temperature-induced resistance variation—factors not present in surface-mount precision types like the RC1206FC22R0. Substituting the RC1/2220KTB in feedback loops, measurement bridges, or filter networks may lead to circuit drift and performance degradation. Use only in non-critical, high-surge, or legacy-compatible applications where accuracy is secondary.
What are the mechanical and mounting considerations when replacing modern SMD resistors with axial RC1/2220KTB in retrofitted PCB designs?
When replacing SMD resistors with the axial RC1/2220KTB in retrofitted PCBs, careful attention must be paid to board layout, mechanical strain, and thermal relief. The RC1/2220KTB’s through-hole axial leads require drilled holes spaced to match its 22mm lead length (typical), which often doesn’t align with standard SMD footprints. Improper mounting can induce lead stress during thermal cycling, increasing failure risk. Use terminal pads or wire-lead transitions if direct mounting isn’t feasible. Additionally, secure the body with adhesive or clips to prevent microphonics or fracture in high-vibration environments, as carbon composition resistors are brittle. Always verify clearance for adjacent components given the RC1/2220KTB’s 3.6mm diameter and 9.5mm length.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
RC1/2220KTB CAD Models
Kamaya Inc. RC1/2220KTB PCB symbols & footprints
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