Hammond 141B 200K to 1000 Ohm Low Profile PCB Audio Transformer
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Create Free Business AccountKey Features
- 200K ohm primary to 1000 ohm secondary (nominal)
- 4 milliwatt output rating, 0 mA max primary DC current
- Primary DCR 3775 ohms, secondary DCR 85 ohms
- 200 Hz - 50 kHz (+/- 1 dB, ref. 1 kHz)
- Low profile, open type construction for PC boards
- Pin terminals 0.25" long x 0.035" diameter
- 0.6 oz net weight; RoHS and REACH compliant
The 141B is a low profile PC board mount audio transformer with a 200K ohm nominal primary and a 1000 ohm nominal secondary. It is a small signal-level part for electronics designers and OEM engineers who need to step a very high impedance source down to 1000 ohms directly on a circuit board.
Electrically, the 141B is rated for 4 milliwatts of output, and its maximum primary DC current is listed as 0 mA, so it is intended for signal coupling with no DC flowing in the primary. DC resistance is 3775 ohms on the primary and 85 ohms on the secondary. The 141 Series is specified for a frequency response of 200 Hz to 50 kHz (+/- 1 dB, ref. @ 1 kHz).
Construction is low profile and open type, with pin terminals 0.25 inch long and 0.035 inch in diameter for P.C. board mounting. Net weight is 0.6 oz, and the shipping weight is 0.05 lbs (0.02 kg).
The part is RoHS and REACH compliant, and carries UPC 623980190105 and UNSPSC 39121301 for purchasing and inventory systems. Other models in the 141 Series cover different impedance ratios and higher output levels; the 141B is the high-ratio, 4 mW option in the range.
Ideal For
- PC board signal-level impedance matching
- Stepping high impedance sources down to 1000 ohms
- Compact low profile audio circuit designs
Overview
| Series | 141 Series Low Profile Audio, PC Board Mount |
| Description | Audio transformer, low profile PC board mount, 200K:1000 ohms, 141 series |
| Part Number | 141B |
| Short Description | AUDIO TX LOW PROFILE PC MOUNT |
Dimensions
| Net Weight | 0.6 oz. |
Electrical
| Output | 4 milliwatts |
| Frequency Response | 200 Hz - 50 kHz (+/- 1 dB, ref. @ 1 kHz) |
| Primary DC Resistance | 3775 ohms |
| Max. Primary DC Current | 0 mA |
| Nominal Primary Impedance | 200 K ohms |
| Secondary DC Resistance | 85 ohms |
| Nominal Secondary Impedance | 1000 ohms |
Identifiers
| UPC | 623980190105 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 0.05 lbs (0.02 kg) |
Construction & Finish
| Pins | 0.25" length, 0.035" diameter |
| Mounting | P.C. board mount, pin type |
| Construction | Low profile, open type |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What are the 141B impedances?▾
200K ohm nominal primary and 1000 ohm nominal secondary.
Can DC current flow through the primary?▾
The maximum primary DC current is listed as 0 mA.
How does the 141B mount?▾
It is a pin type P.C. board mount part with pins 0.25 inch long and 0.035 inch in diameter.
What is its frequency response?▾
200 Hz to 50 kHz, +/- 1 dB referenced to 1 kHz.
How much output can it handle?▾
4 milliwatts.
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