23Z91SM

Overview

The Pulse Electronics 23Z91SM is a surface mount isolation transformer designed for data interface applications. It features a 1:1 turns ratio and a single channel configuration. The component has a primary DC resistance of 0.3 Ohms and an ET value of 2.4 Vµs. It utilizes a 16-terminal gull wing SMD package with dimensions of 0.450 inches in length and 0.265 inches in width. The device operates within a frequency range of 100 kHz and supports temperatures from 0°C to +70°C.

Feature Summary

• Provides electrical isolation for data interface signals
• Complies with IEEE 802.3 specifications for Ethernet applications
• Designed for surface mount assembly processes

Applications

• Adapter cards
• MAUs (Medium Attachment Units)
• Hubs
• Motherboard applications

Procurement Notes

Verify the specific manufacturer part number against official Pulse Electronics documentation to ensure compatibility with design requirements. Confirm that the RoHS compliance status matches regulatory needs for the target market. Check for any specific ordering suffixes or tape-and-reel packaging options if available in current catalogs. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Selection Notes

Select this component for designs requiring isolated transformers for 10BASE-T Ethernet interfaces. Consider the physical footprint constraints due to the specific SMD package dimensions. Evaluate thermal performance within the specified operating temperature range. Verify that the 1:1 ratio and impedance characteristics align with the signal integrity requirements of the network interface circuitry.

Part Context

This component belongs to the family of isolation transformers manufactured by Pulse Electronics, now part of YAGEO. These devices are specifically engineered for telecommunications and networking hardware. The product line focuses on providing reliable signal coupling while maintaining electrical safety standards required in modern electronic equipment.

Replacement Considerations

Consult official substitution guides for equivalent parts with matching pinouts and electrical characteristics. Verify that alternative components meet the same IEEE 802.3 specifications and physical size constraints.