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Product Detailed Parameters
- Description：AUDIO XFMR 600 / 346 SMD
- Series：TTC
- Mfr：Tamura
- Package：Tape & Reel (TR)
- Mounting Type：Surface Mount
- Size / Dimension：0.378" L x 0.492" W (9.60mm x 12.50mm)
- Height - Seated (Max)：0.299" (7.60mm)
- Termination Style：Flat Lead
- Turns Ratio - Primary:Secondary：1:01
- Impedance - Primary (Ohms)：600
- Impedance - Secondary (Ohms)：346
- DC Resistance (DCR) - Primary：135Ohm
- DC Resistance (DCR) - Secondary：135Ohm
- Transformer Type：Data/Voice Coupling
- Frequency Range：200Hz ~ 4kHz
- Frequency Response：±0.2dB
- Voltage - Isolation：1875VRMS @ 1 Second
- Insertion Loss：3dB Max @ 2kHz
- Return Loss：16dB Min @ 200Hz ~ 4kHz
- Power Level：-
- Operating Temperature：-20°C ~ 85°C
- Approval Agency：UL60950, EN60950
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Overview
The Tamura TTC-5035 is a surface-mount audio transformer designed for voice and modem applications. It features a primary impedance of 600 Ohms and a secondary impedance of 346 Ohms with a 1:1 turns ratio. The component operates within a frequency range of 200Hz to 4kHz, offering a frequency response of ±0.2dB. Key electrical specifications include a minimum insertion loss of 3dB at 2kHz and a return loss of 16dB minimum across the operating band. It provides 1875VRMS isolation for one second and supports a working temperature range from -20°C to 85°C.
Feature Summary
- Surface mount construction optimized for high-density PCB layouts
- Certified safety compliance with UL60950 and EN60950 standards
- Designed for encapsulated modem and voice line coupling applications
Applications
- Encapsulated modem circuits
- Voice line transformers
- V.29, V.32, V.34, V.90, and V.92 protocol applications
Procurement Notes
Verify the specific ordering suffix when purchasing, as designations such as 'TR' indicate tape and reel packaging while other suffixes may denote different package types or safety classifications. Confirm that the received components match the required impedance values and physical dimensions specified in the official datasheet to ensure compatibility with the target circuit design.
Selection Notes
Select this component for applications requiring precise 600-to-346 Ohm impedance matching in a compact surface-mount form factor. Ensure the design accommodates the maximum height of 7.60mm and the footprint dimensions of 9.60mm by 12.50mm. Consider the thermal operating range of -20°C to 85°C and the requirement for flat lead termination style during PCB layout planning.
Part Context
The TTC-5035 belongs to Tamura's TTC series of audio and telecom transformers. This series is engineered for voice and data communication lines, providing reliable signal coupling in telecommunications equipment. The component is part of a broader family that includes variants with different impedance ratios and safety certifications, tailored for various modem and voice interface requirements.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components.
