Product Description
Standex Electronics SMP-23 Series MOSFET Relay; 4 PIN / SOP; DPST-NO (2 FORM A); 0 ~ 250 V; 140 mA
MOSFET Relay • Pin Count / Package Style: 8 PIN / SOP • Circuit: DPST-NO (2 FORM A) • Load Voltage DC or Peak AC: 0 ~ 250 V • Load Current Max.: 140 mA
Product Information
| Manufacturer | Standex Electronics |
| Product Category | Relay |
| Product Sub Category | MOSFET Relay |
| Series | SMP-23 Series |
| Catalog Part Number | SMP-2A23-8PT |
Specifications
| Product Attribute | Attribute Value |
|---|---|
| Pin Count / Package Style | 8 PIN / SOP |
| Circuit | DPST-NO (2 FORM A) |
| Load Voltage DC or Peak AC | 0 ~ 250 V |
| Load Current Max. | 140 mA |
| On-State Resistance Max. | 15 Ohms |
| Output Capacitance | 37 pF |
| Off-State Leakage | 10 nA |
| I/O Isolation Voltage Max. | 1500 V |
| Special Feature | UL Approved, RoHS Compliant |
Series Features
SMP-23 Photo-MOSFET Relay
Series DescriptionThe SMP-23 Series is a high-voltage, solid-state Photo-MOSFET relay engineered for robust and reliable switching in compact electronic systems. Encased in a small-outline package (SOP), it supports switching up to 250 V AC or peak DC and load currents up to 170 mA, making it ideal for medium-power applications where space and performance are critical.
With a typical on-resistance of 11 Ω, low output capacitance of 37 pF, and minimal off-state leakage current of 10 nA, the SMP-23 Series ensures clean signal transitions and high signal integrity. Its solid-state architecture eliminates mechanical wear and contact bounce, offering enhanced durability and resistance to shock, vibration, and environmental contaminants.
Designed to handle both low-level analog signals and higher-level loads such as LEDs, relays, solenoids, and lamps, the SMP-23 Series provides high input-to-output isolation and long operational life—making it a dependable solution for demanding industrial, medical, and test environments.
- Solid-state switching with no contact bounce or mechanical degradation
- High voltage switching capability (up to 250 V AC/DC)
- Low output capacitance (37 pF) for clean signal transitions
- Minimal off-state leakage (10 nA) for high signal fidelity
- High input-to-output isolation for safe and reliable circuit separation
- SOP package (4- or 8-pin) ideal for space-constrained designs
- Shock and vibration resistant, impervious to dust and contaminants
- Stable on-resistance over time for consistent performance
- Long operational life with high reliability in solid-state form
Automated Test Equipment (ATE): Reliable switching for precision testing
Electric Vehicles: Medium-power control in battery and power systems
I/O Modules: Signal routing and isolation in industrial automation
Medical Equipment: Safe, low-noise switching in diagnostic and monitoring devices
Sensing Equipment: Clean signal control in precision instrumentation
Telecommunications: Compact relay replacement in communication systems
Security Systems: Silent, dependable switching in access control and alarm systems