NTE NTE78 Datasheet

NTE78

Silicon NPN Transistor

RF Power Output

Description:

The NTE78 is a silicon NPN epitaxial planer type transistor designed for use as 3 to 4 watt RF power
amplifiers in HF band mobile radio applications.

Features:

D High Power Gain
D Emitter Ballasted Construction for High Reliability and Good Performance

Absolute Maximum Ratings:

Collector–Base Voltage, V
Collector–Emitter Voltage (R
Emitter–Base Voltage, V
Collector Current, I
Collector Dissipation (T
Collector Dissipation (T

C

A

C

EBO

= +25°C), P

= +25°C), P
Operating Junction Temperature, T
Storage Temperature Range, T

(TC = +25°C unless otherwise specified)

CBO

= 10Ω), V

BE

J

stg

CER

C

C

Thermal Resistance, Junction–to–Ambient, R
Thermal Resistance, Junction–to–Case, R

Electrical Characteristics:

Parameter Symbol Test Conditions Min Typ Max Unit

Emitter–Base Breakdown Voltage V
Collector–Base Breakdown Voltage V
Collector–Emitter Breakdown Voltage V
Collector Cutoff Current I
Emitter Cutoff Current I
DC Forward Current Gain h
Output Power P

Collector Efficiency η

(TC = +25°C unless otherwise specified)

(BR)EBOIE
(BR)CBOIC
(BR)CERIC

CBO
EBO

FE

O

C

thJC

VCB = 30V, IE = 0 – – 100 µA
VEB = 3V, IC = 0 – – 100 µA
VCE = 10V, IC = 100mA, Note 1 35 70 180
VCC = 12V, Pin = 250mW, f =

27MHz

1.5W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12.5W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

thJA

83°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

= 1mA, IC = 0 5 – – V
= 1mA, IE = 0 75 – – V
= 10mA, RBE = 10Ω 75 – – V

6.0 7.5 – W

55 60 – %

75V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

75V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note 1. Pulse test: Pulse Width = 150µs, Duty Cycle = 5%.

.420 (10.67)

Max

.110 (2.79)

.147 (3.75)

Dia Max

.070 (1.78) Max

Base

.100 (2.54)

.500

(12.7)

Max

.250 (6.35)

Max

.500

(12.7)

Min

Emitter

Collector/Tab