BL 3 31 Z

Headers, Receptacles, Female Sockets Overview

The BL 3 31 Z is a female header connector manufactured by Fischer Elektronik, designed for through-hole PCB mounting. It features 31 positions with a 0.635 mm (0.025 inch) separable pitch and a 2.54 mm (0.100 inch) mating pitch. The connector utilizes stamped contact springs in a fork contact configuration. Contact materials are copper-tin alloy, with tin plating on the contact sleeve and nickel plus gold plating on the contact surface. Rated current is 3 A at 150 V DC, with a test voltage of 1500 V. Operating temperature ranges from -40°C to +163°C.

Headers, Receptacles, Female Sockets Feature Summary

• Utilizes stamped contact spring technology with a fork contact design for flexible configuration
• Features dual-pitch architecture with 0.635 mm separable pitch and 2.54 mm mating pitch
• Constructed with copper-tin alloy contacts and specialized surface plating for durability

Headers, Receptacles, Female Sockets Applications

• Flexible circuit board interconnections requiring variable contact counts
• Low-voltage signal transmission in industrial electronics
• Custom harness assembly where specific pin configurations are needed

Headers, Receptacles, Female Sockets Procurement Notes

Verify that the specific part number BL 3 31 Z matches the required 31-position count, as this series allows for custom contact numbers based on the 0.635 mm pitch. Confirm compatibility with mating components using the 2.54 mm pitch. Ensure environmental ratings meet application requirements regarding the specified temperature range and voltage limits.

Headers, Receptacles, Female Sockets Selection Notes

Select this component when a fixed-pitch connector does not suit the layout or when variable contact counts are necessary. The 0.635 mm pitch allows for dense packing while maintaining standard 2.54 mm mating compatibility. Consider the through-hole mounting method and the specific current rating of 3 A for power distribution needs.

Headers, Receptacles, Female Sockets Part Context

This part belongs to the BL 3 series of female headers from Fischer Elektronik. The series is characterized by its unique ability to accommodate any required number of contacts due to the separable pitch design. It serves as a versatile solution for applications needing precise control over contact quantity without changing the fundamental connector footprint or mating interface.

Headers, Receptacles, Female Sockets Replacement Considerations

Direct substitutes within the same series include other variants like BL 3 35 Z or BL 3 10 Z, which share identical mechanical and electrical specifications but differ in position count. Ensure the replacement maintains the 0.635 mm separable pitch and 2.54 mm mating pitch to guarantee compatibility with existing mating hardware.