TTC-143-LB

$4.67

Description：AUDIO XFMR 600 / 600 TH
Series：-
Mfr：Tamura
Package：Bulk

SKU:bbdb6f3ec16f Category: Audio Transformers Brand: Tamura

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Product introduction

Product Detailed Parameters

Description：AUDIO XFMR 600 / 600 TH
Series：-
Mfr：Tamura
Package：Bulk
Mounting Type：Through Hole
Size / Dimension：-
Height - Seated (Max)：0.350" (8.89mm)
Termination Style：PC Pin
Turns Ratio - Primary:Secondary：01:01.1
Impedance - Primary (Ohms)：600
Impedance - Secondary (Ohms)：600
DC Resistance (DCR) - Primary：85Ohm
DC Resistance (DCR) - Secondary：110Ohm
Transformer Type：Impedance Matching
Frequency Range：300Hz ~ 3.5kHz
Frequency Response：-
Voltage - Isolation：-
Insertion Loss：-
Return Loss：-
Power Level：-45dB ~ 10dB
Operating Temperature：-
Approval Agency：-

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TTC-143-LB

Overview

The Tamura TTC-143-LB is a through-hole audio transformer designed for telephone coupling applications. It features a primary impedance of 600 Ohms and a secondary impedance of 600 Ohms with a 1:1.1 turns ratio. The device operates within a frequency range of 300Hz to 3.5kHz. Key electrical specifications include a maximum DC current rating of 90 mA, a maximum DC resistance of 110 Ohms, and an isolation voltage of 1500 Vrms. The component utilizes a DIP package measuring 33 mm x 20.4 mm x 9 mm.

Feature Summary

Designed specifically for telephone coupling applications
Provides galvanic isolation with high voltage withstand capability
Optimized for voice frequency band transmission

Applications

Telephone line coupling circuits
Modem signal transformation
Voice frequency audio interfacing

Procurement Notes

Verify the specific suffix 'LB' against official Tamura documentation to confirm exact pinout and mechanical dimensions. Ensure compatibility with existing PCB footprints and thermal requirements. Confirm RoHS compliance status if required by project specifications. Cross-reference datasheet revisions to ensure parameter consistency before finalizing procurement orders.

Selection Notes

Select this component when a 600 Ohm balanced-to-balanced or unbalanced-to-balanced transformation is required for voice frequencies. Consider the 1:1.1 ratio for specific impedance matching needs in telephone networks. Evaluate the DIP package size for assembly constraints. Verify that the 90 mA current rating meets the circuit's operational demands.

Part Context

The TTC-143 series represents Tamura's standard line of telecommunications transformers. The TTC-143-LB variant is a specific configuration within this family, tailored for precise impedance matching in legacy and modern telephone systems. It serves as a critical interface component between line-side and equipment-side circuitry.

Replacement Considerations

Direct substitutes may include other Tamura models from the TTC-143 series with compatible impedance ratios. Verify mechanical footprint compatibility before considering alternative manufacturers. Consult official cross-reference lists for guaranteed functional equivalence.