148M-BULK

Description：TRANSFORMER
Series：148
Mfr：Hammond Manufacturing
Package：Bulk

SKU:65b3b430745a Category: Audio Transformers Brand: Hammond Manufacturing

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Product introduction

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)：6k
Impedance - Secondary (Ohms)：500/2k
DC Resistance (DCR) - Primary：850Ohm
DC Resistance (DCR) - Secondary：-
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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148M-BULK

Overview

The Hammond Manufacturing 148M-BULK is an open-frame audio signal transformer designed for PC board mounting via through-hole terminals. It functions as a driver transformer with a primary impedance of 6000 ohms and dual secondary impedances of 500 ohms and 2000 ohms. The unit operates within a frequency range of 200 Hz to 15 kHz. Physical dimensions are 0.820 inches in length, 0.680 inches in width, and 0.69 inches in height.

Feature Summary

Open-frame construction for direct printed circuit board integration
Dual secondary winding configuration providing flexible impedance matching options
Through-hole terminal design for secure mechanical and electrical attachment

Applications

Audio signal coupling in amplifier circuits
Driver stage interfacing in audio equipment
Impedance matching between audio stages

Procurement Notes

Verify the specific suffix against official Hammond documentation to confirm impedance values and pinout configurations. Ensure the bulk packaging designation aligns with your assembly requirements. Cross-reference the datasheet for thermal limits and insulation ratings before finalizing component selection.

Selection Notes

Select this component when a single-ended driver transformer with split secondary outputs is required. Confirm that the 6000-ohm primary impedance matches the source circuit requirements. Evaluate the physical footprint constraints against the specified 0.820 x 0.680 inch dimensions to ensure compatibility with the target PCB layout.

Part Context

This component belongs to the Hammond 148 series of audio transformers. These units are engineered for general-purpose audio applications requiring reliable signal transfer. The series offers various impedance combinations to suit different circuit topologies while maintaining consistent physical form factors for standardized mounting solutions.

Replacement Considerations

Consult official Hammond cross-reference guides for verified substitutes. Ensure replacement parts match the 6000:500/2000 ohm ratio and through-hole mounting style.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.