PH9185.038NL

Overview

The PH9185.038NL is a surface-mount switch-mode transformer from the EP7 platform, designed for isolated power supply drivers in push-pull converter topologies. It features reinforced insulation and UL Class F compliance. Key electrical specifications include an inductance of 310 µH (±45%), a turns ratio of 3:8, and a maximum DC resistance of 0.35 Ω. The component supports a maximum volt-second product of 44 V·µsec and withstands 4000Vrms isolated voltage. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Reinforced insulation design compliant with UL Class F standards for isolated power supply applications.
• Optimized for fixed duty cycle push-pull converter topologies to drive RS-485/RS-232 transceivers.
• Surface mount construction with high isolation capabilities and 8mm creepage distance.

Applications

• Powering MAXIM™ MAX253 RS-485/RS-232 transceivers
• Industrial control systems requiring high isolation
• Building automation interfaces

Procurement Notes

Verify the specific suffix against official documentation; standard 'NL' variants typically utilize tray packaging, whereas 'NLT' indicates tape and reel. Confirm RoHS3 compliance status and MSL level 1 classification during sourcing. Ensure the supplier provides traceable documentation matching the manufacturer's part identification to avoid counterfeit components.

Selection Notes

Select this component when designing isolated driver circuits for RS-485 or RS-232 communication interfaces. It is specifically engineered for compatibility with the MAXIM™ MAX253 controller. Consider the 310 µH inductance and 3:8 turns ratio requirements for the specific push-pull topology voltage levels.

Part Context

This part belongs to the PH9185 series of high-isolation power transformers manufactured by Pulse Electronics. The series utilizes the EP7 platform format, providing standardized dimensions for board space efficiency. These transformers are distinct from general-purpose power transformers due to their specialized reinforcement for isolated driver applications.

Replacement Considerations

PH9185.011NL, PH9185.012NL, PH9185.038NLT