Product Description
Standex Electronics KT Series Reed Relay, Through Hole (THT); 1A SPST-NO, 3 VDC; 1 Amp, < 1000 VDC SWT Voltage
Reed Relay • Mounting: Through Hole (THT) • Contact Form: 1A SPST-NO • Coil Voltage: 3 VDC • Switching Voltage: < 1000 VDC • Switching Current (max.): 1 Amp • Option: Standard • Special Feature: High Voltage Isolation • Washability: Fully Sealed
Product Information
| Manufacturer | Standex Electronics |
| Product Category | Relay |
| Product Sub Category | Reed Relay |
| Series | KT Series |
| Catalog Part Number | KT03-1A-40L-SMD |
Specifications
| Product Attribute | Attribute Value |
|---|---|
| Mounting | Through Hole (THT) |
| Contact Form | 1A SPST-NO |
| Coil Voltage | 3 VDC |
| Switching Voltage | < 1000 VDC |
| Switching Current (max.) | 1 Amp |
| Option | Standard |
| Special Feature | High Voltage Isolation |
| Washability | Fully Sealed |
| Coil Resistance (Ohm) | - |
| Pull-In Voltage (VDC) | - |
| Drop-Out Voltage (VDC) | - |
| Coil Power (mW) | - |
| Coil Inductance (mH) | - |
| Contact Material | Rhodium |
| Rated Power (max.) | 100 W |
| Carry Current (max.) | 2.5 Amps |
| Contact Resistance (max.) | 150 mOhm |
| Breakdown Voltage (min.) | 3-4.5 kVDC |
| Operating Time (max.) | 1.1 ms |
| Release Time (max.) | 0.1 ms |
| Insulation Resistance (min. / typ.) | 10<sup>10</sup>/10<sup>12</sup> Ohm |
| Capacitance (typ.) | 0.5 pF |
| Dielectric Strength Coil/Contact (min.) | 7 kVDC |
| Insulation Resistance Coil/Contact (min./typ.) | 10<sup>12</sup>/10<sup>13</sup> Ohm |
| Capacitance Coil/Contact (typ.) | 1.2 pF |
| Shock Resistance (max.) | 100 g |
Series Features
KT Series Reed Relay
Series DescriptionThe KT Series is a high-voltage, high-insulation reed relay designed for precision switching in demanding applications requiring elevated isolation and low leakage. Capable of switching up to 1,000 VDC, with breakdown voltages up to 4.5 kVDC and isolation voltages up to 7 kVDC, the KT Series delivers robust performance in compact surface-mount (SMD) and through-hole (THT) formats.
Encapsulated in a rugged thermoset overmolded package, the KT Series features SPST-NO (Form A) contact configurations and supports coil voltages of 5 VDC, 12 VDC, and 24 VDC. With insulation resistance exceeding 10¹³ Ω, it ensures ultra-low leakage currents, making it ideal for high-voltage switching in medical, test & measurement, and energy systems. Tested to AEC-Q200 standards and UL listed, the KT Series is a reliable solution for high-performance designs.
- High-voltage switching up to 1,000 VDC
- Breakdown voltage up to 4.5 kVDC; isolation voltage up to 7 kVDC
- High insulation resistance >10¹³ Ω for low leakage performance
- SPST-NO (Form A) contact configuration
- Rated for up to 100 W and 1.0 A
- Coil voltage options: 5 VDC, 12 VDC, 24 VDC
- Available in surface-mount (SMD) and through-hole (THT) formats
- Rugged thermoset overmolded package for durability
- AEC-Q200 tested and UL listed for compliance
Automated Test Equipment (ATE): High-voltage switching in test systems
Medical Devices: Defibrillators, imaging systems, and isolation circuits
Battery-Powered Devices: Safe switching in portable electronics
Photovoltaics: High-voltage relay control in solar energy systems
Telecommunications: Isolation and switching in network infrastructure
Mercury Relay Replacement: Clean, reliable alternative for legacy systems