VRF151G

Microsemi’s products are covered by one or more of U.S. patents 4,895,810 5,045,903 5,089,434 5,182,234 5,019,522 5,262,336 6,503,786 5,256,583

4,748,103 5,283,202 5,231,474 5,434,095 5,528,058 6,939,743 7,342,262 7,352,045 and foreign patents. US and Foreign patents pending. All Rights

Reserved.

Package Dimensions (inches)

All Dimensions are

± .005

HAZARDOUS MATERIAL

WARNING

The ceramic portion of the device

between leads and mounting

flange is beryllium oxide.

Beryllium oxide dust is highly

toxic when inhaled. Care must

be taken during handling and

mounting to avoid damage to this

area. These devices must never

be thrown away with general

industrial or domestic waste.

Figure 7, 175 MHz Test Circuit

+

R1

C5

C4

C10

C9

BIAS 0–6 V

INPUT

D.U.T.

OUTPUT

+

–

T2

L1

C11

C1

T1

C12

50 V

L2

C1

R2

C2

C3

C6

C7

C8

–

R1 - 100 Ohms, 1/2 W

R2 - 1.0 k Ohm, 1/2W

C1 - Arco 424

C3,C4,C7,C8,C9 - 1000 pF Chip

C5, C10 - 0.1 μF Chip

C11 - 0.47 μF Ceramic Chip, Kemet 1215 or Equivalent (100V)

C12 - Arco 422

L1 - 10 Turns AWG #18 Enameled Wire. Close Wound, 1/4” I.D.

L2 - Ferrite Beads of Suitable Material for 1.5 - 2.0 μH Inductance

Unless Otherwise Noted, All Chip Capacitors are ATC Type 100

or Equivalent.

T1 - 9:1 RF Transformer, Can be made of 15 - 18 Ohms

Semirigid Co - Ax, 62 - 90 Mils O.D.

T2 - 1:4 RF Transformer, Can be made of 16 - 18 Ohms Semirigid

Co - Ax, 70 - 90 Mils O.D.

Board Material - 0.062” Fiberglass (G10), 1 oz. Copper Clad, 2

sides, ε

NOTE: For stability, the input transformer T1 must be loaded with

ferrite toroids or beads to increase the common mode inductance.

For operation below 100 MHz. The same is required for the output

transformer.

.435

.225

0.200

0.400

0.390

1.100

1.340

.005

.210

.860

.107

.060

.065 rad 2 PL

1

3

2

4

5

Pin 1. Drain

2. Drain

3. Gate

4. Gate

5. Source