A01TKLB COILCRAFT Inductor (Other) In Stock
The Coilcraft A01TKLB is a 2.5 nH air-core RF chip inductor in a 1618 case size with an ultralow DC resistance of 0.0011 Ω. Designed for general-purpose RF applications, it delivers minimal losses at high frequencies and is RoHS-compliant, making it a compact solution for impedance matching and RF filter networks.
- Manufacturer
- COILCRAFT
- Package
- Other
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- A01TKLB Datasheet PDF
- Category
- Inductor
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 0.0011 Ω DC resistance maximizes Q factor and minimizes insertion loss in RF signal paths
- 2.5 nH (0.0025 µH) air-core inductance enables precise high-frequency impedance matching up to GHz ranges
- 1618 rectangular chip package allows automated SMT assembly and tight component placement in compact RF PCBs
- Air-core construction eliminates magnetic saturation, ensuring linear inductance even at high RF current levels
- RoHS-compliant (JESD-609 e2) for lead-free, green electronics manufacturing compliance
Applications
The Coilcraft A01TKLB is suited for RF impedance matching networks, tank circuits, and bandpass filter designs in wireless communication modules operating from hundreds of MHz to several GHz. Its 2.5 nH inductance and ultralow 0.0011 Ω DC resistance minimize signal losses in LNA input matching stages and antenna feed networks. The compact 1618 chip body is ideal for Bluetooth, Wi-Fi, and ZigBee RF front-end circuits requiring small footprint passive networks.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Case/Size Code | 1618 |
| Construction | Rectangular |
| Core Material | AIR |
| DC Resistance | 0.0011Ω |
| Inductance-Nom (L) | 0.0025 µH |
| Inductor Application | RF INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e2 |
| Number of Functions | 1 |
| Package Height | 3.15mm |
| Package Length | 3.94mm |
| Package Style | SMT |
| Package Width | 4.45mm |
| Packing Method | TR |
| Quality Factor-Min (at L-nom) | 145 |
| Rated Current-Max | 4A |
| Reference Standard | AEC-Q200 |
| Self Resonance Frequency | 12500MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | NO |
| Surface Mount | YES |
| Terminal Finish | Tin/Silver (Sn96.5Ag3.5) |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| Test Frequency | 150MHz |
| Tolerance | 10% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8504.50.80.00 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the inductance value of the Coilcraft A01TKLB, and in which RF frequency range is it most effective?
The Coilcraft A01TKLB has a nominal inductance of 2.5 nH (0.0025 µH). At this low inductance value, the part resonates in the GHz range, making it most effective for impedance matching in Bluetooth (2.4 GHz), Wi-Fi (2.4 GHz and 5 GHz), and LTE sub-6 GHz RF front-end circuits where sub-5 nH inductors are required.
How does the A01TKLB's air-core construction benefit high-frequency inductor performance compared to ferrite-core alternatives?
Air-core construction eliminates magnetic saturation and core loss mechanisms present in ferrite inductors, delivering consistent inductance and high Q factor up into the GHz range. For the A01TKLB's 2.5 nH value, an air core keeps the self-resonant frequency well above 5 GHz, ensuring linear, loss-free behavior in wideband RF circuits where ferrite cores would introduce non-linear distortion.
What DC resistance does the A01TKLB exhibit, and how does this affect RF circuit efficiency?
The A01TKLB has a DC resistance of only 0.0011 Ω (1.1 mΩ), which is among the lowest available for chip inductors in this inductance range. Such ultralow resistance maximizes the inductor's Q factor, reducing insertion loss in RF filter and matching networks by less than 0.01 dB, which is critical in receiver front-ends where every fraction of a dB matters for sensitivity.
Which chip size code does the A01TKLB use, and how does that affect PCB layout in RF designs?
The A01TKLB uses a 1618 case size, corresponding to approximately 1.6 mm × 1.8 mm footprint. This compact rectangular body fits standard SMT pick-and-place equipment and allows components to be placed within 0.5 mm of each other in RF matching networks, reducing parasitic inductance from long interconnects that would otherwise detune impedance matching at 2.4 GHz and above.
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