Mini-Circuits EP4RKU+

View All RF Accessories by Mini-Circuits

Part Number:
EP4RKU+
Manufacturer:
Mini-Circuits
Category:
RF Accessories
RoHs:
Non-RoHS Compliant
Datasheet:
Description:
RF Power Divider 0 Hz ~ 18 GHz Isolation (Min) 11dB, 1.8 VSWR (Max), 19° Imbalance (Max) 32-VFQFN Exposed Pad
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Overview

EP4RKU+ – Complete Datasheet Summary

1. Basic Identification

Full Part Number: EP4RKU+
Manufacturer: Mini‑Circuits
Device Type: MMIC 4‑Way 0° Power Splitter / Combiner
Impedance: 50 Ω
Frequency Range: DC to 18 GHz
Technology: GaAs IPD
Package: 5 × 5 mm 32‑pad QFN (Case Style DG1677‑2)
Compliance: RoHS Compliant, aqueous washable
Revision: Rev. C
ESD Rating: HBM Class 2 (2000 V)
Moisture Sensitivity: MSL1
Marking: EP4KU

2. Key Features

Ultra‑wideband: DC to 18 GHz (covers LTE, WiMAX, WLAN, radar, satellite)
High isolation: typ. 18.8 dB @ 4–18 GHz
Low amplitude unbalance: typ. 0.2 dB @ 4–18 GHz
Low phase unbalance: typ. 1.9 deg @ 4–18 GHz
Compact 5×5 mm QFN with exposed thermal paddle
No external matching required
Aqueous washable assembly compatible

3. Electrical Specifications (@ +25 °C, 50 Ω)

Insertion Loss (above theoretical 6 dB)

Band	Typ.	Max.	Unit
DC – 4 GHz	4.2	5.2	dB
4 – 18 GHz	3.4	4.9	dB

Isolation

Band	Min.	Typ.	Unit
DC – 4 GHz	9	12.1	dB
4 – 18 GHz	11	18.8	dB

Unbalance

Parameter	Band	Typ.	Max.	Unit
Amplitude Unbalance	DC – 4 GHz	0.1	0.6	dB
	4 – 18 GHz	0.2	1.2	dB
Phase Unbalance	DC – 4 GHz	0.3	4	deg
	4 – 18 GHz	1.9	19	deg

VSWR

Port	Band	Typ.	Ratio
Sum Port (S)	DC – 4 GHz	1.8	:1
	4 – 18 GHz	1.4	:1
Output Ports (1–4)	DC – 4 GHz	1.6	:1
	4 – 18 GHz	1.5	:1

Power Handling

Function	Max. Power	Unit
Splitter (total input)	3.1	W
Combiner (per output port)	1.5	W

4. Absolute Maximum Ratings

Parameter	Rating	Unit
Operating Temperature	−55 to +105	°C
Storage Temperature	−65 to +150	°C

5. Pad Configuration (32‑Pad QFN)

Pad	Function
21	Sum Port (S)
14	Port 1
10	Port 2
31	Port 3
27	Port 4
9, 11, 13, 15, 20, 22, 26, 28, 30, 32 + exposed paddle	Ground
All others	Not connected (ground externally)

6. Packaging & Ordering

Package: 32‑pad QFN, 5 × 5 mm, exposed paddle
Tape‑and‑reel: 7‑inch reels (20, 50, 100, 200, 500, 1000 pcs)
Recommended PCB Layout: PL‑649
Evaluation Boards: TB‑EP4RKU+ (without connectors); TB‑EP4RKUC+ (with connectors)

7. Typical Applications

4‑way signal splitting/combining
Phased array radars
MIMO, LTE, WiMAX, WLAN, 5G
Satellite communications
Test instrumentation
Military and wideband systems

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