TDH-1610
ENGINEERING DATA SHEET
ON RELEASE FIXED PERIOD
1PNO (SSO)
FEATURES
q
q
q
q
q
q
Small size and weight
High-reliability design
Hermetically sealed
High transient immunity
Qualified to MIL-PRF-83726/25
Compatible with M12883/52 & /53 socket module and track mount
PRINCIPLE TECHNICAL CHARACTERISTICS
Enclosure:Hermetic Sealed per
MIL-STD-883, Method 1014
Condition B,C
Finish: per MIL-T-10727
Terminals:
Gold Plate per MIL-G-45204
Type II, Class 2, Grade C
Weight
Yes
APPLICATION NOTE:
101
APPLICABLE SOCKETS:
SM-1000-003
Tin Plate
Plug-in
0.56 Ounce max.
DESCRIPTION
The TDH-1610 Time Delay Relays have been designed with thick film hybrid microelectronics timing circuits and
are packaged in a hermetically sealed military style enclosure. The TDH-1610 series are qualified to MIL-PRF-
83726/25 and designed to withstand severe environmental conditions encountered in military/aerospace
applications. These relays are suited for use in power control, communication circuits and many other
applications where power switching and high reliability are required over a wide temperature range.
North America
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622 USA
Europe, SA
2 Rue Goethe
57430 Sarralbe
France
Tel: (33) 3 87 97 98 97
Fax: (33) 3 87 97 84 04
Asia-Pacific Ltd.
20/F Shing Hing Commercial Bldg.
21-27 Wing Kut Street
Central, Hong Kong
Tel: (852) 2 191 2886
Fax: (852) 2 389 5803
www.leachintl.com
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
Data sheets are for initial product selection and comparison. Contact Leach International prior to choosing a component.
Date of issue: 3/06
- 73 -
Page 1 of 3
ELECTRICAL SPECIFICATION
Input (Control) Parameters
Timing:
a. Operation, Time Delay on
b. Method
c. Range
d. Accuracy
Recycle Time
Operations: (X1-X2)
a. Input & Control Voltage
b. Operating Current
Transients: MIL-STD-704A, Limit 1
a. Spike Susceptibility
b. Positive, Transients
c. Self-Generated Spikes
Electromagnetic Interference Per MIL-STD-461A
Power Loss
Release
Fixed Period
0.05 to 500 Seconds
±10% [1]
10 ms, min [5]
20-30 Vdc
10 mA, Max @ +25° C
+80 Volts Max
±600 Volts Max
None
Class 1D [3]
1 ms [2]
TDH-1610
Output (Load) Parameters
Contact Form
Contact Rating
Voltage Drop, Maximum
Leakage Current, Maximum:
a. at 28 Vdc and 25° C
d. at 28 Vdc and 125° C
Dielectric Strength:
a. @ Sea Level, 60 Hz
b. @ 80,000 ft., 60 Hz
Insulation Resistance @ 500 Vdc
SPST
150 mA
2 Vdc
1 Microampere
10 Microamperes
1000 Vrms [4]
350 Vrms
1000 M
Ω
[4]
GENERAL CHARACTERISTICS
Ambient Temperatures Range:
a. Operating
b. Non-Operating
Vibration:
a. Sinusoidal
10-55 Hz
55-500 Hz
500-3000 Hz
b. Random: MIL-STD-810
Shock, 0.5 MS, 1/2 Sine, 3 Axis
Acceleration, in any Axis
Life at Rated Resistive Load; Minimum
0.06" DA
10 G
20 G
0.2 G
2
/Hz
1,100 G
100 G
1,000,000 operations
-55 to +125° C
-55 to +125° C
NUMBERING SYSTEM
TDH-1610 - 1001
|
|
1
3
W
|
4
M83726/24 - 1001
|
|
|
1
2
3
W
|
4
1.
2.
3.
4.
Model Number or Basic "MIL-PRF" Series number.
Military "Slash" number.
Timing Range, Fixed: 100 milliseconds to 500 seconds. (See Note 6).
Quality level (See Note 7).
Date of issue: 3/06
- 74 -
Page 2 of 3
MECHANICAL SPECIFICATIONS
TDH-1610
CONTROL 20-32 VDC(+)
COMMON(-)
X2
TD
MILITARY PART NUMBER & DATA
B1
LOAD
SERIAL NUMBER
NAMEPLATE (FAR SIDE)
CIRCUIT DIAGRAM (NEAR SIDE)
L
A3
X1
A1
.080 ±.005
2 PLACES
.810 MAX
20-32 VDC(+)
CONTRASTING BEAD
.158 ±.003
FROM FACE
OF HEADER
2 PLACES
.640
MAX
FIXED TIME DELAY
20-32 VDC
.170
8 PLACES .200
DATE CODE (NEAR SIDE)
.040 ±.001 DIA, 8 PINS
FINISH: PARA 3.4.2.
.450
.300
.150
.110 ±.005
2 PLACES
C
L
.15
.13
.010-.015R
4 PLACES
.18
.410 MAX
.055 ±.005
2 PLACES
.050 ±.001 DIA POLARIZING PIN
0 VDC
X1-X2
INPUT
VOLTAGE
20-32 VDC
0 VDC
(B1-X2)
CONTROL
ENERGIZED
DE-ENERGIZED
.07
CONTRASTING BEAD
TIME DELAY
NOTE 6
DIMENSIONS ARE SHOWN IN INCHES.
TIME DELAY ON RELEASE
NOTES
[1] The accuracy specification applies for any combination of operating temperature and voltage.
[2] The accuracy will not be affected by power interruptions up to 1 millisecond, spaced at least 10 milliseconds
apart. Transient and power loss specifications are based on a maximum duty cycle of 1/50.
[3] EMI test limits will not be exceeded during the timing interval or when continuously energized under steady
state conditions, per paragraph 3.23, MIL-PRF-83726C.
[4] Terminals X1, X2, A1, B1 and A3 must be connected together during the test. Dielectric withstanding voltage
and insulation resistance are measured at sea level between all mutually insulated terminals and between all
terminals and case.
[5] Recycle time is defined as the minimum time control power must be removed from terminal B1 to assure that
a new cycle can be completed within the specified timing tolerance.
[6] A four digit number defines the time delay in seconds (or milliseconds). The first three digits are significant
figures, used to define the specific time delay. The fourth digit represents the number of zeros to follow the first
three digits.
Examples:
- 1001 = 1 second (1,000 milliseconds)
- 2502 = 25 seconds (25,000 milliseconds)
- 5000 = 0.5 seconds (500 milliseconds)
[7] Quality level as specified in MIL-R-83726, paragraph 3.1.1, 3.1.2 and 3.1.3.
Date of issue: 3/06
- 75 -
Page 3 of 3
Application notes
DERATING OF CONTACTS FOR DC VOLTAGES
ABOVE NOMINAL RATING
N°101
To establish a standard for the derating of relay contacts is, at best, a subjective practice. Limitations are governed by the type
of relay, contact gap, maximum voltage capabilities of the relay contact system, and the contact material.
The most common method is to derate the contacts by use of the Power Formula, using the known current and voltage.
This method is valid only for
Resistive Loads,
and is an approximation only; keeping in mind the limitations mentioned above.
Power = IE (Current x Voltage)
I
2
E
2
= 2/3 I
1
E
1
Example:
A designer is working with a 55 volt DC system and has a relay rated at 10 amps resistive at 28 volts DC.
What is the maximum current that can be switched at 55 Vdc.
I
1
= 10 Amperes
E
1
= 28 VDC
E
2
= 55 VDC
I
2
= ? (Current ratings at 55 VDC Resistive)
I
2
E
2
= 2 I
1
E
1
/3
I
2
= 2 I
1
E
1
/E
2
3
= 2 (10 x 28)/55 x 3
= 560/165
I
2
= 3.4 Amperes at 55VDC
In addition, the user should always be concerned about the following:
1. Derating contacts that are rated for less than 10 Amperes at nominal voltage.
2. Derating contacts for use in system voltages above 130 Volts DC
Date of issue: 6/00
- 14 -
Page 1 of 1
SM-1000-003
ENGINEERING DATA SHEET
TRACK MOUNT RELAY SOCKET
5 AMP
BASIC SOCKET SERIES DESIGNATION FOR:
Series X (Track Mount)
Series TD-1609, TD-1610 (Track Mount)
DESIGNED TO THE STANDARDS AND REQUIREMENTS OF:
MIL-S-12883/52
APPLICABLE TRACK:
MT-3000-03
GENERAL CHARACTERISTICS
1. Supplied with No. 20 contacts and No. 20 crimp.
2. Standard tolerances
3. Weight
4. Used in conjunction with MT-3000-003
North America
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622 USA
Europe, SA
2 Rue Goethe
57430 Sarralbe
France
Tel: (33) 3 87 97 98 97
Fax: (33) 3 87 97 84 04
Asia-Pacific Ltd.
20/F Shing Hing Commercial Bldg.
21-27 Wing Kut Street
Central, Hong Kong
Tel: (852) 2 191 2886
Fax: (852) 2 389 5803
.xx ±.01; xxx ±.005.
.016 lb. max.
www.leachintl.com
Date of issue: 6/02
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
-5-
Page 1 of 1
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