Hammond 126C 10K Single-Ended Interstage Transformer, 106 H
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Create Free Business AccountKey Features
- 10K to 10K ohm interstage, 375 ohms DCR per winding
- 106 H inductance; rated 15 mA DC bias on a gapped core
- Driver use only in single ended tube output amplifiers
- Bifilar wound; minimum 20 Hz - 20 kHz (+/- 1 dB)
- 400 VDC max working voltage, 1,000 VDC hi-pot test
- Closed style, minimum 8" leads, 29M6 silicon laminations
- RoHS and REACH compliant
The 126C is a 10K to 10K ohm tube driver interstage transformer for driver use only in single ended tube output amplifiers. It takes the place of a coupling capacitor circuit for improved sound and is the higher-impedance option in the 126 Series, suited to single ended designs whose driver tube wants a 10K load.
The 126C has an inductance of 106 henrys and a rated DC bias current of 15 mA, supported by a gapped core. Primary and secondary are each 10K ohms with 375 ohms DC resistance, and the unit is rated at 4 audio watts. Bifilar wound windings provide coupling and bandwidth, and the minimum frequency response is 20 Hz - 20 kHz (+/- 1 dB max, ref. 1 kHz).
The core is made from hi grade 29M6 silicon laminations. Maximum working voltage is 400 VDC and every unit is hi-pot tested at 1,000 VDC.
The 126C is closed style with leads at least 8 inches long. Dimensions are A 2.50 in (64 mm), B 3.12 in (79 mm), C 3.12 in (79 mm), D 2.00 in (51 mm) and E 2.25 in (57 mm), with 0.20 in (5 mm) x 0.38 in (10 mm) mounting slots. The series lists a unit weight of 3 lbs. 2 oz.; the shipping weight is listed as 1.2 lbs (0.54 kg). It is RoHS and REACH compliant.
Ideal For
- Interstage coupling in single ended tube amplifiers
- Replacing driver-to-output coupling capacitors
- High-impedance single ended driver stages
Overview
| Series | 126 Series Tube Driver - Interstage |
| Application | Driver use ONLY in single ended tube output amplifiers; replaces coupling capacitor circuits |
| Description | Audio transformer, tube driver, interstage, for single ended tube amplifiers |
| Part Number | 126C |
| Short Description | INTERSTAGE AUDIO TX |
Dimensions
| A | 2.50 in (64 mm) |
| B | 3.12 in (79 mm) |
| C | 3.12 in (79 mm) |
| D | 2.00 in (51 mm) |
| E | 2.25 in (57 mm) |
| G - Mounting Slot | 0.20 in (5 mm) x 0.38 in (10 mm) |
| Unit Weight (Series) | 3 lbs. 2 oz. |
Electrical
| Inductance | 106 Henrys |
| Audio Watts | 4 |
| Hi-Pot Test | 1,000 VDC |
| Primary Impedance | 10K ohms |
| Frequency Response | Minimum 20 Hz - 20 kHz (+/- 1 dB max, ref. 1 kHz) |
| Secondary Impedance | 10K ohms |
| Primary DC Resistance | 375 ohms |
| Maximum Working Voltage | 400 VDC |
| Rated DC Bias Current | 15 ma. |
| Secondary DC Resistance | 375 ohms |
Identifiers
| UPC | 623980024196 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 1.2 lbs (0.54 kg) |
Construction & Finish
| Core | Gapped to support the specified D.C. bias current |
| Leads | Minimum 8" long |
| Style | Closed style |
| Windings | Bifilar wound |
| Laminations | Hi grade silicon laminations (29M6) |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What impedance is the 126C?▾
10K ohms primary and 10K ohms secondary, each with 375 ohms DC resistance.
How much DC bias can it take?▾
It is rated for 15 mA, supported by a gapped core.
What is the inductance?▾
106 henrys.
What is it designed for?▾
Driver use only in single ended tube output amplifiers, replacing coupling capacitor circuits.
What voltage can it withstand?▾
400 VDC maximum working voltage; hi-pot tested at 1,000 VDC.