SERIES FD472
ENGINEERING DATA SHEET
RAILWAY RELAY
2PDT-DB-DM, 3 AMP / 72VDC
Polarized, latching, hermetically sealed relay
2PDT-DB-DM
Contact arrangement
Coil supply
Direct current
PRINCIPLE TECHNICAL CHARACTERISTICS
Contact rating
Weight
Dimensions of can without
hardware
Balanced-force design.
Tin plated, hermetically sealed metal can.
Non-overlapping contact arrangement, see note 5 page 4.
APPLICATION NOTES:
001
004
007
APPLICABLE SOCKET:
SF400CE40E
SF402-1F
72 Vdc / 3 Amp
< 80 grams
26mm x 25.7mm x 26mm max
CONTACT ELECTRICAL CHARACTERISTICS
Nominal contact
voltage (Vdc)
72 V
15
≤
U
≤
35 V
35
<
U
≤
90 V
90
<
U
≤
140 V
Contact rating in Amps
resistive load
3
-
-
-
inductive load (L/R=30ms)
1.2
10 mA to 2.50 Amps
10 mA to 1.00 Amps
10 mA to 0.70 Amps
Level
High level
High level
High level
High level
Minimum
operating cycles
1,000,000 cycles
2,000,000 cycles
2,000,000 cycles
2,000,000
cycles
Life expectancy for DC loads other than 72Vdc: See application note n°004.
Tel: (33) 3 87 97 31 01 Tel: (852) 2 191 3830
Fax: (33) 3 87 97 96 86 Fax: (852) 2 389 5803
Fax: (01) 714-670-1145
Data sheets are for initial product selection and comparison. Contact Leach International prior to choosing a component.
Featuring
LEACH
©
power and control solutions
Tel: (01) 714-736-7599
www.leachintl.com
EUROPE
AMERICAS
6900 Orangethorpe Ave. 2 Rue Goethe
57430 Sarralbe
P.O. Box 5032
Buena Park, CA 90622 USAFrance
ASIA
Room 501, 5/F, The Centre Mark
287 - 299 Queen's Road Central
Hong Kong
Date of issue: 4/06
- 46 -
Page 1 of 4
COIL CHARACTERISTICS (Vdc)
CODE
C
B
A
D
SERIES FD472
E
W
V
Nominal operating voltage
6
12
24
36
48
72
110
Maximum operating voltage at +85°C
7.5 15
33
45
60
90
138
Minimum operating or release voltage at +85°C
4.2 8.4 18.5 25.2 33.6 50.4 77
Coil resistance in Ohms ±10% at +25°C
28
112 450 1000 1800 3300 5100
GENERAL CHARACTERISTICS
Operating temperature
Dielectric strength at sea level
All terminals to ground
Contact to contact, isolated terminals
Initial insulation resistance at 500 Vdc
Sinusoidal vibration
Shock
1500 Vrms / 50 Hz
1500 Vrms / 50 Hz
>100 M
Ω
20 G / 30 to 3000 Hz
100 G / 6 ms
30 G / 18 ms
10 µs
15 ms max
15 ms max
1 ms max
15 mΩ max
-40°C to +85°C
Maximum contact opening time under vibration and shock
Operate time at nominal voltage
Release time
Bounce time
Contact resistance at 5 Amps
Date of issue: 4/06
- 47 -
Page 2 of 4
MOUNTING STYLES
Marking face
SERIES FD472
A
25.7
MAX
B : ISO M3
C : UNC
4
ñ0.5
1
D
M3
or 4.40 UNC 2 B
4
ñ0.15
4
ñ0.15
26
MAX
23.8
MAX
15.9
3.8
Contrasting beads
26 MAX
35.7
ñ0.15
44 MAX
35.5
36.7
44 MAX
K MOUNTING MAY BE USED WITH 1 OR 8
TERMINAL STYLE; IT INCLUDES THE DELIVERY
OF 10124 ISOLATION SPACER PAD
0°
60°
120°
180°
240°
ñ0.15
300°
Code U Code V Code W Code X Code Y Code Z
35.7
3.8
15.9
Isolation pad
10124
5.4
Cl‚3
J
K
Cl‚1
Cl‚2
1
23.8
MAX
Ø6
ñ0.1
M3
4
ñ0.15
Silicone
gasket shore
A 15-30
GOLD PLATED PINS
15.9
ñ0.1
5
-0.1
+0
H
M3
Dimensions in mm
Tolerances unless otherwise specified ±0.25mm
35.5
36.7
44 MAX
35.7
ñ0.15
6.9
ñ0.1
1.3
ñ0.1
9
ñ0.1
44 MAX
SCHEMATIC DIAGRAM
BOTTOM VIEW, LAST
ENERGIZED COIL B2-C2
D
C
B
A
1
2
-
+
-
+
4
TERMINAL TYPES
Polarizing pin
(See note 6)
Ø1.57
+0.05
-0.03
Ø1.57
5.08
+0.05
-0.03
Ø1.57
ñ0.03
2.54
2.54
5.08
1
2
Silicone
gasket shore
A 15-30
1.3
ñ0.1
4
Isolation pad
10124
+0.5
8
3.6
+0
7.6
6.9
ñ0.2
Ø2
7.9
MAX
1.27
TIN PLATED PINS
SOLDER HOOKS
GOLD PLATED PINS
SHORT TIN PLATED PINS
Date of issue: 4/06
- 48 -
Page 3 of 4
NUMBERING SYSTEM
FD472 B
4
A
XXX
Basic series designation__________________________|
|
|
|
|
1-Mounting Styles (A,B,C,D,J,K,H)_____________________|
|
|
|
2-Terminal Types(1,2,4,8)_________________________________|
|
|
3-Coil Voltage (C,B,A,D,E,W,V)________________________________|
|
4-Coding keys for H mounting style_________________________________|
SERIES FD472
NOTES
1.
2.
3.
4.
5.
Relays with B, D mounting styles and terminal type 4 are compatible with socket SF402CE40E.
Relays with H mounting style are compatible with socket SF402-1F.
Isolation spacer pads for PCB mounting available on request.
For other mounting styles or terminal types or coding, please contact factory.
Non overlapping arrangement insures that if one of the NO or NC contacts is accidentally welded, none of
the other contacts can be transfered to another state.
6.
Polarizing pin of terminal 4 does not appear on H mounting style. It is used with other mounting styles.
CODING CHART FOR H MOUNTING
Double breaker contacts of this relay are typically high level rated.
For H mounting, coding is chosen by customer.
TYPICAL CHARACTERISTICS
q
Coil resistance temperature change: See application note n°001
Date of issue: 4/06
- 49 -
Page 4 of 4
Application notes
N°001
CORRECTION DUE TO COIL COPPER WIRE RESISTANCE
CHANGE IN TEMPERATURE
Example: Coil resistance at 25°C: 935 ohms. What is it at 125°C?
Correction coefficient on diagram is: 1.39 at 125°C. R becomes: 935x1.39=1299 Ohms
Correction also applies to operating voltages
Date of issue: 6/00
-1-
Page 1 of 1
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