RCA 7587 schematic

SHA P-CUTOFF

TETR D

7587

•

low

heater
low plate
teristics from tube to
at all altitudes • Rigorously controlled and tested

• AII-metal-and-ceramic
ance to shock and vibration • Operation at metal
shell temperatures up to
characteristics • Approx. 1 inch long; less than

112

inch in diameter; weighs approx. 2.35 g

drain.

current.

Very high transconductance at

Exceptional

tube.

uniformity

Operation at full ratings

construction.

150~

C • Sharp-cutoff

of charac-

High resist-

Trademark(s) • Reglsterea

Marca(sl Regls1rada

s)

RCA-7587

Ac

too. L

Size

General

The

lugs

long,
features
heater,
leakage,
milliamperes),
ability

Features

7587

of

unequal

less

(1)

and a specially

(3)

to

Nuvistor

nCA-7587

nuvistor

industrial
ness,

uniformity

withstand

the

mIxer

than

operate

low

These

7587

. .

serVIce.

has

an

all-metal-and-ceramic

width

1/2"

avery

high

rugged

transconductance

(4)

at

very

SHARP-CUTOFF

Type

type.

and

current

of

severe

features

particularly

to

in

diameter,

designed

full

for

IS

a

sharp-cutoff,

It

is

military

drain,

characteristics

mechanical

plus

facilitate

structure

high

input

ratings

Industrial

designed

small-signal
relatively

suitable

insertion

and

of

cathode

at

impedance,

at

shock

its

weighs

unique

low

any

TETRODE

Applications

general-purpose

for

use

applications

low-voltage

from

small

envelope

to

plate

altitude.

tube

and

vibration.

size

for

rf-if,

provided

id

a

socket.

approximately

design

assure

current

(5)

in

a

requiring

operation,

to

tube,

and

light

video-amplifier,

with

2.35

(2)

a6.3-volt

very

high

low

(10600

perveance,

tetrode

wide

It

variety

exceptional

and

ability

weight

two

peripheral

is

only

g.

low-wattage

heater-cathode

micromhos

of

the

of

compact~

to

make

and

1.

65"

The

7587

at

10

and

(6)

•

Structural

A

utilizing

This

provides

All

connections

to

eliminate
welding.
eliminate
devices

The
using
uniformity

Special

The
rigorous
life
variable-frequency

© 1961

All

Rights Reserved

Features

major

a

light-weight,

unique

a

structure

The

the

processed

structure

parts

of

Tests

7587

tests

performance;

by

Radio Corporotion

feature

type

are

the

tube

gases

made

characteristics

and

is

for

of

of

electrode

of

brazed

structural

is

and

at

low

of

the

to

Controls

rigidly

intermittent
for

vibration,

of

America

the

7587

cantilever-supported

excellent

at

very

strain

also

extremely

exhausted

impurities

temperatures.
7587

nuvistor

from

controlled

resistance

low-pressure

is

its

structure,

mechanical

high

and

and

which

small

tube

during

shorts;

to

impact

- 2 -

all-ceramic-and-metal

cylindrical

inherent

stability

temperatures

element

sealed

are

tetrode

tolerances,

to

tube.

manufacture,

for

early-hour,

breakdown,

distortion

at

generally

also

shock,

electrode

in

the

and

extreme

in a hydrogen

very

permits

thus

high

present

assuring

and

lOO-hour,

low-frequency

and

heater

construction

nuvistor

often

temperatures

automatic

exceptional

is

subjected

and

cycling.

structure.

design,

ruggedness.

atmosphere

caused

in

electron

assembly

lOOO-hour

vibration,

•

by

to

to

6-61

7587

•

•

Special Tests

These

low

plate

at

full

tetrode

example,

medical

special

current

ratings

exceptionally

in

electronic

Electrical:

Heater,

Voltage

Current

Direct

Grid-No.l
Grid-No.l
Plate

Heater

Characteristics,

Plate-Supply
Grid-No.2

Cathode

Plate

Transconductance.
Pll1te

Grid-No.2
Grid-No.l

for

(ac

at

Interelectrode

to

cathode,

to

Supply

Resistor

Resistance

Current

Current
Voltage

and

Controls (Cont'd)

controls

and

at

any

altitude,

communications

equipment,

Unipotential

or

dc)

6.3

volts

to

plate

to

cathode,

grid-No.2,

cathode

Voltage

.

Class

..

Voltage.

.....

(Approx.).

..

(Approx.)

and

voltage,

desirable

equipment,

TV

Cathode:

.

Capacitances:

grid-No.2,

AI Ampl

ifier:

for

tests,

small

and

extremely

for

critical

cameras,

GENERAL

.

.

heater

heater

plate

together

power

control

and

DATA

&

&

shell

current

with

requirements,

small

industrial

and

test

and

shell

of

10

high

size,

instrumentation

transconductance

ability

make

applications

measurement

0.012

10600

J1.a.

the

6.3

O.

7587

15

7.0

1.4

1.4

125

50

68

0.2

10

2.7

4.5

to

operate

nuvistor

-

equipment,

instruments,

±

10%

ampere

max.

megohm

at

for

volts

J1.J1.f
J1.J1.f
J1.J1.

f

J1.J1.f

volts

volts

ohms

J1.mhos

ma
ma

volts

Mechan i ca

Operating

Maximum
Maximum
Maximum

Envelope.
Cap

..

Base

..

Socket.

Maximum

PLATE
PLATE
GRID-No.2
GRID-No.2
GRID-No.l

CATHODE
GRID-No. 1

SUPPLY
VOLTAGE

Negative
Peak

positive

I:

Position.
Overall
Seated
Diameter.

Ratings,

(SCREEN-GRID)

VOLTAGE

(CONTROL-GRID)

CURRENT

CURRENT.

Length.

Length

Absolute-Maximum

VOLTAGE.

. . . . . . . .

bias

value
value

.

.Medium

.

Cinch

INDUSTRIAL

For

Operation

. . . . . . .

SUPPLY

VOLTAGE:

VOLTAGE.

.

Ceramic-Wafer

Mfg. Co. No.133

SERVICE

Values:

at

Any

Altitude

Twelvar

.Metal

and

. . . . .

5-Pin

65

10

001,

Ceramic

JEDEC

(JEDEC

or

330

max.

250

max.

330

max.

110

max.

55

max.

2

max.

20

max.

2

max.

..

Any

1. 050"

0.840"

0.440"
Shell

No.Cl-44

No.E5-65)

Equivalent

volts

volts
volts
volts

volts
volts

rna
rna

- 3 -

7587

PLATE
GRID-No.2
PEAK

Maximum

Grid-No.l

a

Heater
Direct

Plate
Plate
Grid-No.2

Transconductance
Transconductance
Transconductance

Reverse
Heater-Cathode

Leakage

DISSIPATION . . . . . .

INPUT

HEATER-CATHODE

Heater

Heater

negative

positive

Circuit

Circuit

For

fixed-bias

For

cathode-bias

For

Operation

Page

9).

Current.

Interelectrode

Grid-No.l
Grid-No.l
Plate

Heater

Current
Current

Difference

(1)

and

pressed

Heater
Heater

Between

tied

Between

tied

Between

tied

to
to

to

cathode,

to

cathode

Current

Transconductance

In

Grid

negative
positive

Resistance:

grid

together

grid

together

plate

together

.

VOLTAGE:

with

with

respect

respect

Values:

Resistance:

operation

operation.

at

Metal-Shell

CHARACTER IST I CS

plate.
cathode,

grid

(1)
(2)

(1).
(2).

Change:

between

per
Current.

Leakage

No.2

No.

Transconcluctance

cent

with
with

and

1 and

and

all

..

Capacitances:

grid

No.2,

of

Transconductance

Current:

respect
respect

all

all

other

to

cathode

to

cathode

a

Temperatures

RANGE

No.2,

heater

(2),

ex-

to

cathode

to

cathode

other

other

electrodes

electrodes

electrodes

up

VALUES

heater

&

to

150 0 C

&

shell

(1)

(See

FOR

EQU I PMENT

shell

Dimensional

DES IGN

Note

1,3

Min.

0.140

1

2
2
2
2

6.0

1.2

1.1 1.7

8.5
1,4
1,3
1,3

3,5

1.8

9000

8000

1,6
1,8

1,8

1,7

1,9

500

500

1, 10 500

2.2

0.2
100

100

0.5

I

Outline

Max.

0.160

0.012

11. 5

12200

max.

max.

max.

max.

max.

max.

8.0

1.6

50

3.6

20

0.1

5.0

5.0

watts

volts
val

megohm

megohm

Drawing

ampere

!-,mhos
!-,mhos

megohms

megohms

megohms

watt

ts

on

•

•

•

!-'a

ma

%

!-'a

1

!-'a
!-'a

•

Note

Note

Note

1:

2:

3: With dc

Note 4:

Note

Note

5:
6:

With

6.3

volts

Measured

in

accordance

plate

= 68 ohms, and
With

volts

With

With dc

volts=

dc

=

5.7

plate

-6,

volts

plate

-1.6,

and

grid-No. 1 resistor=

ac

or

dc

on

with

volts

=

125,

cathode-bypass
volts

metal

ac

volts

or

dc

=

=

125,

shell

200,

on

heater.

EIA

Standard

dc

grid-No.2
capacitor

dc

grid-No.2

grounded.

heater.

de

grid-No.2

0.5

- 4 -

RS-19l-A.

volts
= 1000 !-,f.

volts

volts

megohm, and

=

50,

=

70,

metal

cathode

=

50,

grid-No.l

dc

shell

resistor

grid-No.

supply

grounded.

1