PH9185.043NL

Overview

The PH9185.043NL is a surface-mount power transformer from the EP7 platform, designed for isolated power supply drivers in push-pull converter topologies. It features reinforced insulation and UL Class F certification. The component measures 10 mm by 10 mm with a maximum height of 12.50 mm. Key electrical specifications include an inductance of 1260 µH (±45%), a turns ratio of 4:3, and a maximum DC resistance of 0.70 Ω. It supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Reinforced insulation suitable for isolated power supply driver applications
• Compatible with Maxim MAX253 to power RS-485/RS-232 transceivers
• High isolation voltage rating of 5000 Vrms
• Compliant with UL and TUV safety certifications

Applications

• Push-pull converter transformer circuits
• Powering RS-485 transceivers
• Powering RS-232 transceivers
• Isolated power supply driver systems

Procurement Notes

Verify that the specific part number suffix matches the required packaging configuration, as variants exist in tape and reel or cut tape formats. Confirm compliance requirements such as RoHS status and moisture sensitivity level before finalizing procurement. Ensure the supplier documentation explicitly references the manufacturer's official datasheet for the PH9185.043NL to validate technical parameters against design specifications.

Selection Notes

Select this component when designing fixed duty cycle push-pull converters requiring high isolation. The 4:3 turns ratio and 1260 µH inductance are critical for matching the primary side drive requirements. Consider the 10 mm x 10 mm footprint for board space constraints. Verify thermal management capabilities given the 125°C maximum operating temperature limit.

Part Context

This transformer belongs to the PH9185 series, which utilizes the EP7 platform. The series is engineered specifically for switch-mode power transformers in isolated applications. The EP7 platform provides standardized dimensions and performance characteristics for consistent integration into various industrial and communication interface power designs.

Replacement Considerations

Other models within the PH9185 series, such as PH9185.011NL or PH9185.012NL, offer different inductance values and may serve as alternatives if electrical parameters differ. Cross-referencing the specific inductance and turns ratio is essential to ensure circuit compatibility.