© 2008 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com L Page 1
L\072008\Q2
Series L
Single Output to 25A 280 Vac
DC Control
Part Number Description
L24D25C 25A, 280 Vac
L24D25G 25A, 280 Vac
L24D40G 40A, 280 Vac
Part Number Explanation
L24D 25C
FEATURES/BENEFITS
• Ultraminiature package
• Designed for PC Board Mounting
• Optional thermal pad available (see Optional
Add-Ons)
• Zero-cross turn-on
DESCRIPTION
The Series L is designed to control medium-power AC
loads, while occupying minimal board space. The Series
L is an excellent choice for a PCB-mount power switching
relay. A thermal pad is available to eliminate thermal
grease when mounting it on to a heat sink. The relay
provides optiocal isolation to protect control elements
from load transients. The Series L also o ers excellent
thermal performance.
APPLICATIONS
• On/O control of medium-power equipment
• Interfacing microprocessor controls to AC loads
• Heating control
• Medical quipment
• Test equipment
NOTES
1) Line Voltage (nominal): 24 = 240 Vac; 48 = 480 Vac
2) Switch Type: D = Zero-cross turn-on;
3) Control Range: C = 3.5-15 Vdc, G= 12.5 - 32 Vdc
4) /R = RoHS Compliant
MECHANICAL SPECIFICATION
Figure 1 — Series L; dimensions in inches (mm)
0.25
(6.35)
0.37
(9.40)
0.50
(12.70)
0.05
(1.27)
0.78
(19.69)
1.12
(28.32)
1.00
(25.40)
1.37
(35.05 )
TELEDYNE RELAYS
L SERIES
Solid-State Relay
WEIGHT:
0.406 oz. (11.5g)
AC–
+AC
I
N
P
U
T
O
U
T
P
U
T
INPUT (CONTROL) SPECIFICATION
Min Max Units
Control Range
L24D25C 3.5 15 Vdc
L24DXXG 12.5 32 Vdc
Input Current Range
L24D25C 5 30 mAdc
L24DXXG 5 14 mAdc
Must Turn-o Voltage 1 Vdc
Input Resistance (Typical)
L24D25C 470 Ohms
L24DXXG 2200 Ohms
Reverse Voltage
L24D25C 15 V
L24DXXG 32 V
Figure 2 — Series L
CONTROL CHARACTERISTICS
24681012141618202224262830320
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
0
3.5–15V model
12.5–32V model
Control Voltage (V)
Input Current (mA)
L Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2008 TELEDYNE RELAYS
L\072008\Q2
Series L
Single Output to 25A, 280 Vac
DC Control
ENVIRONMENTAL SPECIFICATION
Min Max Unit
Operating Temperature –55 100 °C
Storage Temperature –55 100 °C
Input-Output Isolation 4000 Vrms
Output-Case Isolation 3300 Vrms
Rated Impulse Voltage 3300 Vrms
NOTES:
1. Electrical speci cations at 25 °C unless otherwise speci ed.
2. An external MOV is recommended for transient voltage protection
3. For 800Hz applications, contact factory.
4. For additional/custom options, contact factory.
OPTIONAL ADD-ONS
Please order add-ons separately:
• -12 — Themal pad installed.
Figure 3 — Series L
BLOCK DIAGRAM
AC
AC
+
–
Rc
Uc
Ic
024681012141618202224
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Load Current (Arms)
Power Dissipation (W)
0 102030405060708090100
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Ambient Temperature (°C)
8°C/W
6°C/W
4°C/W
2°C/W
Pd = Vd x I
with Vd =1.08 + 0.016 x I
THERMAL CHARACTERISTICS
Figure 4 — Current derating curves
OUTPUT (LOAD) SPECIFICATION
Min Max Unit
Operating Range
All Relays 24 280 V
Peak Voltage
All Relays 600 Vpeak
Load Current Range
L24D25C .05 25 Arms
L24D25G .05 25 Arms
L24D40G .05 40 Arms
Maximum Surge Current Rating
(Non-Repetitive)
L24D25 250 A
L24D40 350 A
On-State Voltage Drop 1.08 + (0.016xl) V
Synchronizing Level ± 25 V
O -State Leakage Current 1 mA
Turn-On Time 8.3 ms
Turn-O Time 8.3 ms
O -State dv/dt 500 A/μs
Operating Frequency 47 440 Hz
I2t for Match Fusing (<8.3 ms) 260 A2S
