Notes:
• Denotes 75 Ohm model, for coax connector models 75 Ohm BNC connectors are standard.
• Internal load dissipation: 0.75 Watt.
• Matched power rating: 10 Watt.
• When only specification for M range given, specification applies to entire frequency range.
• General Quality Control Procedures and Environmental Specifications are given in Mini-Circuits Guarantees Quality.
Hi-Rel, MIL description are given in Hi-Rel and MIL
• Prices and Specifications subjects to change without notice.

ZB4PD-1750-75   4 Way-0°
Frequency
MHz		 Isolation, dB Insertion Loss, dB
Above 6.0dB		 Phase
Unbalance
Degrees		 Amplitude
Unbalance, dB		 VSWR  (:1)
fL - fU L
Typ.  Min.		 M
Typ.  Min.		 U
Typ.  Min.		 L
Typ.  Max.		 M
Typ.  Max.		 U
Typ.  Max.		 L
Max.		 M
Max.		 U
Max.		 L
Max.		 M
Max.		 U
Max.		 S
Typ.  Max.		 OUT
Typ.  Max.
875-1750       30  20             0.40  0.80           3.00     0.40   1.08  1.50   1.25  1.50  
L=low range(fL to 10fL)  M=mid range(10fL to fU/2)  U=upper range(fU/2 to fU)

Pin Connections
Port Sum Port Port 1 Port 2 Port 3 Port 4
bh S 1 2 3 4



Case Style - UU188 (inch,mm )   weight: 260 grams.
A B C D E F G H J
3.50
88.900		 2.13
54.102		 .88
22.352		 .150
3.810		 3.350
85.090		 1.06
26.924		 .125
3.175		 1.75
44.450		 .44
11.176
K L M N P Q R S T
.89
22.606		                
Tolerance: .x ± .1  .xx ± .03  .xxx ± .015 inch.
Material and Finish:
    Case material: aluminum alloy. Finish: iridite per MIL-C-5541
Connectors:
    Connectors: Please specify female type N or SMA.

FREQ
(MHz)		 Insertion Loss Amplitude
Unbalance
(dB)		 Isolation Phase
Unbalance
(Degrees)		 FREQ
(MHz)		 VSWR
S		 VSWR
1		 VSWR
2		 VSWR
3		 VSWR
4
(dB)
S-1		 (dB)
S-2		 (dB)
S-3		 (dB)
S-4		 (dB)
1-2		 (dB)
2-3		 (dB)
3-4
875.00 6.37 6.36 6.38 6.34 0.040 24.97 24.71 24.41 1.48 875.00 1.40 1.06 1.05 1.07 1.06
880.00 6.35 6.36 6.38 6.33 0.040 25.40 24.85 24.83 1.46 880.00 1.40 1.06 1.05 1.07 1.07
885.00 6.36 6.36 6.37 6.32 0.060 25.75 24.77 24.94 1.47 885.00 1.40 1.06 1.06 1.07 1.07
890.00 6.34 6.38 6.38 6.33 0.050 26.16 25.07 25.39 1.60 890.00 1.40 1.07 1.06 1.08 1.07
895.00 6.35 6.36 6.33 6.31 0.040 26.42 25.45 25.74 1.55 895.00 1.39 1.07 1.06 1.08 1.08
900.00 6.32 6.33 6.36 6.32 0.040 27.17 25.37 26.22 1.63 900.00 1.38 1.07 1.07 1.09 1.08
905.00 6.32 6.35 6.35 6.28 0.070 27.51 25.58 26.58 1.56 905.00 1.37 1.08 1.08 1.09 1.09
925.00 6.31 6.33 6.35 6.27 0.080 29.42 26.08 28.11 1.41 925.00 1.33 1.12 1.11 1.13 1.12
950.00 6.31 6.34 6.33 6.31 0.030 31.72 26.93 30.20 1.35 950.00 1.30 1.16 1.15 1.16 1.15
975.00 6.29 6.33 6.31 6.27 0.070 34.84 27.12 32.68 1.44 975.00 1.26 1.17 1.17 1.18 1.17
1000.00 6.27 6.26 6.30 6.25 0.050 38.00 28.07 35.19 1.54 1000.00 1.20 1.20 1.19 1.20 1.19
1025.00 6.27 6.30 6.30 6.24 0.060 42.51 28.75 38.74 1.37 1025.00 1.13 1.23 1.23 1.23 1.22
1050.00 6.24 6.26 6.28 6.21 0.070 49.15 29.28 40.73 1.67 1050.00 1.08 1.25 1.25 1.25 1.24
1075.00 6.23 6.24 6.27 6.21 0.060 49.02 29.92 41.27 1.56 1075.00 1.04 1.26 1.26 1.26 1.25
1100.00 6.23 6.24 6.28 6.23 0.050 45.83 30.58 41.43 1.62 1100.00 1.02 1.28 1.28 1.28 1.27
1125.00 6.25 6.28 6.30 6.21 0.080 43.06 31.39 40.26 1.76 1125.00 1.08 1.29 1.30 1.30 1.29
1150.00 6.24 6.25 6.27 6.21 0.060 40.51 31.69 39.27 1.69 1150.00 1.13 1.30 1.31 1.31 1.30
1175.00 6.26 6.27 6.30 6.24 0.060 40.47 32.24 37.46 1.93 1175.00 1.17 1.31 1.31 1.31 1.30
1200.00 6.31 6.32 6.35 6.28 0.070 38.40 32.38 36.29 1.91 1200.00 1.22 1.31 1.32 1.32 1.31
1225.00 6.31 6.34 6.32 6.27 0.080 37.05 32.39 35.47 1.88 1225.00 1.26 1.32 1.33 1.33 1.32
1250.00 6.29 6.32 6.34 6.28 0.060 35.18 32.62 33.18 2.01 1250.00 1.29 1.30 1.31 1.31 1.30
1275.00 6.36 6.40 6.37 6.35 0.050 33.27 32.90 32.27 2.09 1275.00 1.30 1.28 1.28 1.29 1.28
1300.00 6.35 6.38 6.38 6.36 0.030 31.50 33.70 30.58 2.03 1300.00 1.33 1.26 1.27 1.27 1.26
1325.00 6.38 6.36 6.38 6.33 0.060 30.20 33.44 29.35 1.98 1325.00 1.32 1.24 1.24 1.25 1.23
1350.00 6.37 6.37 6.39 6.32 0.070 28.77 33.83 27.88 1.81 1350.00 1.31 1.20 1.20 1.22 1.20
1375.00 6.35 6.35 6.39 6.36 0.040 27.08 33.97 27.14 1.87 1375.00 1.30 1.19 1.19 1.21 1.19
1400.00 6.38 6.37 6.40 6.35 0.050 26.67 34.37 25.92 1.97 1400.00 1.27 1.18 1.18 1.20 1.18
1425.00 6.35 6.35 6.41 6.36 0.060 25.74 34.10 25.55 2.12 1425.00 1.23 1.16 1.16 1.18 1.16
1450.00 6.35 6.36 6.39 6.35 0.040 24.89 34.28 24.95 2.16 1450.00 1.20 1.15 1.15 1.18 1.16
1475.00 6.35 6.33 6.39 6.37 0.060 24.46 34.49 24.34 2.22 1475.00 1.17 1.14 1.15 1.17 1.15
1500.00 6.34 6.35 6.40 6.36 0.050 24.22 34.36 24.08 2.23 1500.00 1.12 1.13 1.13 1.16 1.15
1525.00 6.36 6.31 6.36 6.34 0.050 23.84 35.34 23.97 2.37 1525.00 1.10 1.13 1.13 1.16 1.14
1550.00 6.35 6.31 6.38 6.37 0.070 23.89 35.81 23.86 2.34 1550.00 1.08 1.12 1.13 1.15 1.13
1575.00 6.36 6.32 6.37 6.36 0.060 23.96 35.67 23.85 2.51 1575.00 1.08 1.11 1.12 1.14 1.12
1600.00 6.36 6.31 6.40 6.36 0.090 24.11 34.86 24.14 2.45 1600.00 1.10 1.11 1.11 1.13 1.12
1625.00 6.37 6.33 6.35 6.37 0.040 24.41 35.99 24.42 2.38 1625.00 1.13 1.11 1.11 1.12 1.11
1650.00 6.39 6.35 6.40 6.39 0.040 24.99 36.23 25.31 2.50 1650.00 1.15 1.12 1.12 1.12 1.11
1675.00 6.43 6.42 6.43 6.43 0.010 25.75 36.67 25.82 2.73 1675.00 1.16 1.12 1.12 1.12 1.11
1700.00 6.50 6.41 6.44 6.48 0.090 26.37 36.47 26.39 2.79 1700.00 1.19 1.13 1.12 1.10 1.10
1725.00 6.50 6.40 6.45 6.53 0.130 26.76 36.91 27.04 2.57 1725.00 1.21 1.14 1.13 1.11 1.12
1750.00 6.58 6.45 6.49 6.56 0.130 26.93 36.98 26.99 2.66 1750.00 1.20 1.16 1.14 1.12 1.13