SR75-2ST [ETC]

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型号：	SR75-2ST
厂家：	ETC
描述：
文件：	总2页 (文件大小：181K)
中文：	中文翻译
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DC SOLID STATE RELAY

Series SR75-2

0.75 A, 300 Vdc OPTICALLY ISOLATED

SHORT CIRCUIT PROTECTED FOR AC OR DC LOADS

Part Number* Relay Description

SR75-2

Solid State Relay with Terminals for Through Hole

Mount

SR75-2S

Solid State Relay with Terminals for Surface Mount

A ‘W’ or ‘T’ suffix denoting the S²R™ Teledyne reliability screening level,

must be added to the part number.

FEATURES/BENEFITS

• Short Circuit Protected - Prevents

damage to system components,

assemblies and system wiring. Can be

connected to protect AC or DC loads (AC

with diode bridge)

ELECTRICAL SPECIFICATIONS

(-55°C TO 105°C, Ambient Temperature Unless Otherwise Specified)

INPUT (CONTROL) SPECIFICATIONS

• Optical Isolation - Isolates control circuits

from load transients Eliminates ground

loops and signal ground noise

• Low Off-State Leakage - For high off-

state impedance

• Switches High Voltages - To 300 Vdc

• Switches High Currents - To 0.75 Adc

• High Noise Immunity - Control signals

isolated from switching noise

Min Max Units

Control Voltage Range (See Note 6)

Input Current @ 5 Vdc (See Figure 1)

Must Turn-On Voltage

3.8 32.0 Vdc

11.0 mA

3.8

Vdc

1.5 Vdc

-32.0 Vdc

Must Turn-Off Voltage

• High Dielectric Strength - For safety and

for protection of control and signal level

circuits

Reverse Voltage Protection

OUTPUT (LOAD) SPECIFICATION

DESCRIPTION

Min Max Units

300 Vdc

The SR75-2 solid state relay utilizes a

power FET switch that is protected against

overload and short circuit currents. The

short circuit protection feature not only

provides protection should a short or

overload occur while the relay is on, but will

also provide protection should the relay be

switched into a short. Once the protection

trips the relay, it will remain off until reset

by cycling the input control line. Using the

SR75-2 to switch power sources and loads

can prevent fires, damage to system

assemblies and system wiring. The power

FET output offers low “ON” resistance and

can switch loads in either the high or the

low side of the power line. The SR75-2 is

packaged in a 16 pin DIP package with

either surface mount or through hole

mounting available.

Load Voltage Rating

Transient Blocking Voltage

Output Current Rating (See Figure 2)

On Resistance (See Figure 3)

Leakage Current at Rated Voltage

Turn-On Time

320 Vdc

0.75 Adc

2.0 Ohm

100

4.5

0.5

µA

Turn-Off Time

dV/dt @ 60 V @ 25°C

100

V/µs

Electrical System Spike @ 25°C

Output Capacitance @ 100 KHz, 25 Vdc

Input to Output Capacitance at 1 KHz

Dielectric Strength

± 600 Vpk

300

BLOCK DIAGRAM

1000

10⁸

Vrms

Ohm

°C

Insulation Resistance

Junction Temperature

130

800-284-7007 • www.teledynerelays.com

Page 69

SR75-2

CONTROL CURRENT VS VOLTAGE

FIGURE 1

LOAD CURRENT DERATING CURVE

FIGURE 2 (SEE NOTE 5)

TRIP CURRENT VS TIME

FIGURE 4

WIRING CONFIGURATIONS

TYPICAL ON RESISTANCE VS T_J

FIGURE 3

MECHANICAL SPECIFICATIONS

SHORT CIRCUIT PROTECTED DC LOADS

(SEE NOTES 3, 4 AND 6, FIGURE 3 AND 4)

0.290

(7.37)

SHORT CIRCUIT PROTECTED AC LOADS

(SEE NOTE 6)

NOTES:

1. The input voltage is 5.0 Vdc for all tests unless otherwise specified.

2. Reversing the output polarity when the relay is in overload or is sustaining

a short circuit may cause permanent damage.

3. Inductive loads must be diode suppressed.

4. Loads may be switched in either the high side or the low side of the power

source.

5. Continuous load current rating is determined with relay mounted on a

printed circuit card.

6. For input voltage greater than 6.0 Vdc a series resistor must be used to

limit the power dissipation on the input of the relay. The resistor value

should be selected using the following equation:

•

Operating Temperature Range -

55°C to 105°C

Storage Temperature Range -55°C

to 125°C

Weight: 2.0 grams maximum

Case: 16 pin Dual-In-Line (TO-

116)

Case Material: Filled Epoxy, self

extinguishing

•

R = (V_BIAS- 6 volts)/11mA

Page 70

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

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