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Product Detailed Parameters
- Description：XFMR 8KCT / 4, 8, 16 CHAS MNT
- Series：A
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：2.750" L x 2.500" W (69.85mm x 63.50mm)
- Height - Seated (Max)：3.060" (77.72mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：8kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：91.31Ohm, 102.3Ohm
- DC Resistance (DCR) - Secondary：321mOhm, 365mOhm, 476mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：2000V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：10W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1608A is a push-pull audio output transformer designed for tube application circuits. It features an 8,000 CT primary impedance with a 100 mA rating and secondary taps at 4, 8, and 16 Ohms. Rated for 10W power handling, it operates within a frequency range of 30 Hz to 30 kHz. The unit utilizes wire lead termination and includes shielding to minimize interference. Physical dimensions are 2.5 inches in width, 3.75 inches in length, and 3.06 inches in height.
Feature Summary
- Designed specifically for push-pull tube output circuits including triode, Ultra-Linear, and pentode configurations.
- Provides multiple secondary impedance options via 4, 8, and 16 Ohm taps for flexible speaker matching.
- Incorporates internal shielding to reduce electromagnetic interference and maintain signal integrity.
Applications
- Tube-based audio amplifier output stages
- Triode and Ultra-Linear circuit implementations
- Pentode tube output applications
Procurement Notes
Verify the specific datasheet version to confirm exact electrical tolerances and physical mounting hole patterns before integration. Ensure the primary current rating of 100 mA aligns with the intended tube pair's bias requirements. Confirm that the wire lead termination style matches the existing circuit board or chassis wiring infrastructure.
Selection Notes
Select this component when a 8kCT primary impedance is required for push-pull tube amplifiers. Compare against the 1645A model if higher power handling (30W) or different primary impedance is needed. Ensure the 10W power rating suffices for the target audio application without exceeding thermal limits.
Part Context
This part belongs to the 1608A-1650A series of tube output transformers from Hammond Manufacturing. The series offers various impedance and power ratings tailored for different tube output stages. These components are engineered for high-fidelity audio reproduction in vacuum tube equipment.
Replacement Considerations
Direct substitutes within the same series include models like 1610A or 1612A, provided their primary impedances and power ratings match the circuit design requirements. Verify pinout compatibility and physical dimensions when considering alternative Hammond part numbers.
