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	Variable
	Differential
	CDAD
	CDKD
	CDKF
	Features Common Specs Product Specs Package Dim. / Pin Config Specification of Tape and Reel Suggested Land Pattern Reflow Soldering Conditions Typical Applications Technical Data RoHS Compliance Status
	CDLF
	Fixed
	Tap
	Programmable
	High-Frequency Probe Unit
	Socket
	Skew
	Differential Signal Balancer/Common-mode Noise Absorber
	Common Mode Filter <Common Mode Eliminator>
	What's New
	Care and Handling of LTCC Products

CDKF-type
LTCC High-Precision Differential Delay Line

The CDKF-type component, which utilizes an LTCC design, is a High-precision Differential Delay Line.
Utilizing our delay time measuring technologies, we guarantee a delay time tolerance of ±5ps.
It is a RoHS-compliant component.
Care and Handling of LTCC Products

Common Specifications

Impedance:	single-ended: 50 W ±10% differential: 100 W ±10%
Waveform Distortion:	Overshoot/preshoot under 20%
Delay Time Temp. Coefficient:	0~150ppm/°C
Insulation Resistance:	DC50V, over 100M W
Operating Temperature Range:	-40°C to +85°C
Storage Temperature Range:	-40°C to +120°C

CDKF Product Specifications

Part Number	Delay Time	Delay Difference	Rise/Fall Time (20-80%)	-3 dB Passband		DC Resistance
Part Number	Delay Time	Delay Difference	Rise/Fall Time (20-80%)	Actual(1)*	Guarantee(2)*	DC Resistance
CDKF03C	30ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF04C	40ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF05C	50ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF06C	60ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF07C	70ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF08C	80ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF09C	90ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF10C	100ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF11C	110ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF12C	120ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF13C	130ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF14C	140ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF15C	150ps ±5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1 W Max.
CDKF16C	160ps +10/-5ps	5ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1.5 W Max.
CDKF18C	180ps ±10ps	10ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1.5 W Max.
CDKF20C	200ps ±10ps	10ps Max.	60ps Max.	DC～10GHz	DC～6GHz	1.5 W Max.

(1)* In order to achieve the Actual -3dB passband, it is necessary to input a differential signal into the suggested land pattern.
(2)* The guaranteed value of -3dB passband is limited by the band width of the pin probe during product inspection.

Package Dimensions & Pin Configuration

Unit:mm(inch)
Tolerance:±0.1(±0.004)

CDKD and CDKF Type Tape and Reel specifications

Packaging of components can be in Tape and Reel for convenience of shipping and storage. The package is embossed with cover tape and contains 500pcs per reel, as shown below. The reel is marked with supplier name, part number, quantities, and lot number.

DIMENSIONS OF TAPE

Unit:mm (inch)
Tolerance:±0.1(±0.004)

T: 5(0.197)Max

Direction of Feed

No 1 pin

DIMENSIONS OF REEL

Unit:mm (inch)
Tolerance:±0.1(±0.004)

Suggested Land Pattern

Unit:mm(inch)
Tolerance:±0.1(±0.004)

Reflow Soldering Conditions

Storage conditions are as per MSL1. These component families are not moisture-sensitive. Baking prior to reflow is not required.

J-STD-020C Pb-Free Standard

Typical Applications

(1) PECL

(2) LVPECL

(3) Twisted Pair Termination

(4) LVDS

Note: The Delay Line can be used with the GND disconnected, however, in order to obtain superior performance, we recommend that all GND pins should be connected.

Technical Data

Defining the 30ps Delay Time

Feed Through PCB	Mounting PCB
Feed Through PCB Port 1-to-Port 2 propagation time: t1 (=30ps) Mounting PCB Port 1-to-Port 2 propagation time: t2 (=60ps) CDKF03C Net Delay Time: t2-t1 (=30ps)
Projected Characteristics based on Electro-magnetic Simulator Test Results
CDKF10C
Output waveform (Step function)
130ps Propagation time between Ports is shown.


Amplitude / Frequency



Output waveform (2.5GHz Clock)



Group Delay
Propagation Time between Ports (t2) = 130ps Net Delay Time (t2－t1) = 100ps