TQ1553-2

Overview

The TQ1553-2 is a MIL-STD-1553 interface pulse transformer manufactured by iNRCORE, LLC. It utilizes a through-hole mounting configuration with dimensions of 0.624 inches in length and width (15.86mm x 15.86mm) and a maximum height of 6.35mm. The component features primary-to-secondary turns ratios of 1.4CT:1CT and 2CT:1CT. It operates within a temperature range of -55°C to +125°C or +130°C and supports frequencies from 75 kHz to 1 MHz. The unit has a maximum DC resistance of 3.5 Ohms and is classified as non-compliant with RoHS standards.

Feature Summary

• Designed for reliable signal transmission in MIL-STD-1553 bus architectures
• Provides galvanic isolation between transmitter and receiver stages
• Supports standard data rates via specified frequency response capabilities

Applications

• MIL-STD-1553B data bus transceivers
• Avionics communication systems
• Military-grade embedded network interfaces

Procurement Notes

Verify the specific datasheet version for exact electrical tolerances and pinout configurations before integration. Confirm that the through-hole package style aligns with the target PCB footprint requirements. Ensure environmental compliance documentation meets project specifications given the non-RoHS status. Validate thermal performance under maximum operating conditions.

Selection Notes

Select this component when a robust, military-specification pulse transformer is required for MIL-STD-1553 applications. The through-hole design offers mechanical stability for high-vibration environments. Consider the specific turns ratio options to match the impedance matching requirements of the connected driver and receiver circuits. Verify compatibility with the system's operating temperature range.

Part Context

This part belongs to iNRCORE's TQ series of pulse transformers, which are engineered for high-reliability digital isolation. The series includes various models tailored for different mounting styles and electrical characteristics, serving critical roles in defense and aerospace communication networks where signal integrity is paramount.

Replacement Considerations

Direct substitutes include other MIL-STD-1553 pulse transformers with identical through-hole footprints and compatible turns ratios. Verify that alternative components meet the same voltage-time product and frequency response specifications to ensure functional equivalence in the bus interface circuit.