© 2016 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com STH Page 1
STH\062016\Q2
Series STH
Output to 50A, 660 Vac
High Industrial Performance (HIPak) Solid-State Relays
Part Number Description
STH24D12 12A, 3-32 Vdc
STH24D25 25A, 3-32 Vdc
STH24D35 35A, 3-32 Vdc
STH24D50 50A, 3-32 Vdc
STH48D50 50A, 3-32 Vdc
FEATURES/BENEFITS
• Zero-cross models for resistive loads
• Low zero-cross turn-on voltage
• Input protection and control LED standard
• IP20 touch-proof fl aps optional
• Connectors for power wiring and heat sinks available
• Designed in conformity with EN60947-4-3 (IEC947-
4-3) and EN60950/VDE0805 (Reinforced Insulation)
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STH Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2016 TELEDYNE RELAYS
STH\062016\Q2
Series STH
Output to 50A, 660 Vac
High Industrial Performance (HIPak) Solid-State Relays
ELECTRICAL SPECIFICATIONS
(+25°C ambient temperature unless otherwise specifi ed)
INPUT (CONTROL) SPECIFICATIONS
Min Max Units
Input Current Range 10 13 mA
Must Turn-Off Voltage 2.0 Vdc
Reverse Voltage Protection (R/D) 32 V
Clamping Voltage (R/D) 36 V
Input Immunity (EN1000-4-4) 2 kV
Input Immunity (EN1000-4-5) 2 kV
OUTPUT (LOAD) SPECIFICATIONS
Min Max Units
Peak Voltage
STH24DXX 600 Vpeak
STH48DXX 1200 Vpeak
Load Current Range (Resistive)
12 output current .005 12 Arms
25 output current .005 25 Arms
35 output current .005 40 Arms
50 output current .005 60 Arms
Maximum Surge Current Rating (Non-Repetitive)
12 output current 170 A
25 output current 350 A
35 output current 500 A
50 output current 720 A
On-State Voltage Drop
Up to 25 output current 0.85 V
Above 35 output current 0.9 V
Output Power Dissipation (Max)
12 output current 0.9x0.85xl+0.042xl² W
25 output current 0.9x0.85xl+0.016xl² W
35 output current 0.9x0.9xl+0.015xl² W
50 output current 0.9x0.9xl+0.012xl² W
Zero-Cross Window (Typical) ±35 Vac
Off-State Leakage Current 1 mA
Turn-On Time (60 Hz) 8.3 Vac
Turn-Off Time (60 Hz) 8.3 Vac
Off-State dv/dt 500 V/ųs
Maximum di/dt (Non-Repetitive) 50 A/ųs
Operating Frequency 0.1 800 Hz
I²T or fuse matching (<10ms)
12 output current 128 A²s
25 output current 600 A²s
35 output current 1250 A²s
50 output current 2500 A²s
Junction-Case Thermal Resistance
12 output current 2.5 °C/W
25 output current 1.7 °C/W
35 output current 0.6 °C/W
50 output current 0.45 °C/W
Conducted Immunity Level
IEC/EN6100-4-4
(bursts) 2kV criterion B
IEC/EN6100-4-5
(surge) 2kV criterion A (with external VDR)
© 2016 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com STH Page 3
STH\062016\Q2
Series STH
Output to 50A, 660 Vac
High Industrial Performance (HIPak) Solid-State Relays
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GENERAL SPECIFICATIONS
(+25°C ambient temperature unless otherwise specifi ed)
ENVIRONMENTAL SPECIFICATIONS
Min Max Units
Operating Temperature
Up to 35 output current -55 80 °C
STH48XXX -40 80 °C
Storage Temperature
Up to 35 output current -55 125 °C
STH48XXX -40 125 °C
Ambient Humidity 40 to 85 %
Input-Output Isolation 4000 Vrms
Insulation Resistance
@500Vdc 1000 MΩ
Rated Impulse Voltage 4000 V
Protection Level (CEI529) IP20
Vibration (10-55 Hz according to CE168) 1.5 mm
Shock (according to CD168) 30/50 g
Housing Material PA6 UL94VO
Baseplate Aluminum, nickel-plated
STH Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2016 TELEDYNE RELAYS
STH\062016\Q2
Series STH
Output to 50A, 660 Vac
High Industrial Performance (HIPak) Solid-State Relays
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12°C/W corresponds to a relay without heat sink
6°C/W corresponds to a relay mounted on a DIN-rail adaptor (Teledyne P/N DL12)
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Teledyne Relays:
STH24D12 STH24D25 STH48D50 1LK00600 STH 24D50 FW108