T4-1-KK81+
1:4 XFMR, 0.2 - 350 MHZ, 50
Quick Answer: T4-1-KK81+ delivers the T4-1 family’s 1:4 transformation from 200 kHz to 350 MHz in the KK81 package.
- Manufacturer
- Mini-Circuits
- Product Category
- RF Baluns
- Package
- 6-SMD, Gull Wing
- Stock
- 852 pcs
- Availability
- Current quantity subject to confirmation.
Product Attributes
| Manufacturer | Mini-Circuits |
|---|---|
| Product Category | RF Baluns |
| Frequency Range | 200kHz ~ 350MHz |
| Impedance - Unbalanced/Balanced | 1:4 |
| ion Loss (Max) | 3.0dB |
| Min Qty | 1 |
| Mounting Type | Surface Mount |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Product status | Active |
| Datasheet | View Datasheet PDF |
Procurement Snapshot
Key supply and purchasing information for T4-1-KK81+.
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Detailed Description for T4-1-KK81+
Product Overview
T4-1-KK81+ delivers the T4-1 family’s 1:4 transformation from 200 kHz to 350 MHz in the KK81 package. It is designed for broadband 50 Ω circuits that need to feed a higher-impedance balanced load, or to recover a single-ended signal from a differential stage with the same ratio.
The 250 mW RF limit and 30 mA DC-current rating define the usable operating envelope. Because the KK81 package differs from the W38 and plug-in versions, this ordering code is particularly relevant for repair and production BOMs where the existing pad geometry and component height are fixed.
Key Features
- Manufacturer: Mini-Circuits
- Part Number: T4-1-KK81+
- Product Category: RF Balun / RF Transformer
- Device Type: KK81-packaged 1:4 core-and-wire RF transformer
- Frequency Range: 0.2 MHz to 350 MHz
- System / Port Impedance: 50 Ω
- Impedance Ratio: 1:4
- RF Power: 0.25 W
- DC Current: 30 mA DC
- Package / Case: KK81, approximately 0.58 × 0.30 × 0.26 in
- Mounting Type: Surface mount
Applications
- Wideband receiver and transmitter matching networks
- Differential amplifier and mixer coupling
- KK81-form-factor replacement in 1:4 RF transformer designs
Quality & Sourcing
Antrex Electronics can assist with sourcing T4-1-KK81+ for legacy and current RF assemblies. Transformer substitutions should match the winding ratio, operating band, power/current limits, pin configuration and package footprint.
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