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Product Detailed Parameters
- Description：TRANSFORMER
- Series：148
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：-
- Height - Seated (Max)：0.690" (17.53mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：500
- Impedance - Secondary (Ohms)：125/500
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：60Ohm
- Transformer Type：Economical Open Type
- Frequency Range：200Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：250V
- Insertion Loss：0.5dB
- Return Loss：-
- Power Level：75mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 148E-BULK is an open-frame audio transformer designed for printed circuit board mounting. It features a primary impedance of 500 ohms and secondary impedances of 12,000, 0, 0, and 125/500 ohms. The primary coil resistance is 79 ohms, while the secondary coil resistance is 60 ohms. This unshielded component belongs to the 148 series and is classified as an audio and signal transformer.
Feature Summary
- Open-frame construction suitable for direct PCB integration
- Multi-tap secondary winding configuration for flexible driver applications
- Unshielded design optimized for specific electromagnetic environments
Applications
- Audio driver circuits
- Signal transformation in embedded systems
- Industrial audio equipment
Procurement Notes
Verify the exact suffix designation against official Hammond Manufacturing documentation to confirm bulk packaging specifications. Ensure the part number matches the required impedance ratios and mounting style for your specific circuit design requirements before finalizing procurement orders.
Selection Notes
Select this component when an unshielded, open-frame audio transformer with specific multi-tap secondary options is required for PCB mounting. Confirm that the 500-ohm primary impedance aligns with your source circuitry and that the physical dimensions fit within your enclosure constraints.
Part Context
This model is part of the Hammond Manufacturing 148 series, which specializes in audio and signal transformers. These components are engineered for reliable performance in various electronic applications requiring precise signal coupling and impedance matching between stages.
Replacement Considerations
Consult official Hammond Manufacturing cross-reference guides for verified substitute part numbers. Ensure any replacement maintains identical electrical parameters, including primary and secondary impedances, to guarantee circuit compatibility.
