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Create Free Business AccountThe 141D is a low profile, PC board mount audio transformer from the 141 Series, matching a 3000 ohm center-tapped primary to a 1000 ohm center-tapped secondary. It suits OEM engineers and designers building compact audio circuit boards who need a small signal transformer with center taps on both windings.
Electrically, the 141D is rated for 150 milliwatts output with a maximum primary D.C. current of 1 mA. The series table lists D.C. resistance of 120 ohms on the primary and 51 ohms on the secondary, while the part drawing breaks this down by pin: 64.480 and 64.400 ohms on primary pins 1-2 and 2-3, and 23.230 and 22.900 ohms on secondary pins 4-5 and 5-6, each ±20%. Frequency response is 200 Hz to 50 kHz within +/- 1 dB, referenced at 1 kHz.
Typical primary inductance across pins 1-3 is 923.90 mH (7.88K ohm impedance) measured at 1 kHz, 1 V open circuit, with leakage inductance of 6.24 mH. Dielectric strength is 250 VRMS and the temperature class is up to 105 °C. The core uses high grade 29M6 silicon laminations.
Construction is low profile and open type, with pin terminals 0.25" long and 0.035" in diameter for direct P.C. board mounting. Net weight is 0.6 oz. The 141D is listed as RoHS and REACH compliant.
| Series | 141 Series (Low Profile Audio) |
| Description | Audio transformer, low profile PC board mount, 3000CT:1000CT ohms, 141 series |
| Product Type | Low profile audio transformer, PC board mount |
| Net Weight | 0.6 oz. |
| Drawing Tolerance | ±0.02 in. |
| Output | 150 mW |
| Max. Primary DC | 1 mA |
| Frequency Response | 200 Hz - 50 kHz (+/- 1 dB, ref. @ 1 kHz) |
| Dielectric Strength | 250 VRMS |
| DCR Primary, Pin 1-2 | 64.480 Ohms ±20% |
| DCR Primary, Pin 2-3 | 64.400 Ohms ±20% |
| DCR Secondary, Pin 4-5 | 23.230 Ohms ±20% |
| DCR Secondary, Pin 5-6 | 22.900 Ohms ±20% |
| Output Power (Typical) | 150 mW |
| Primary D.C. Resistance | 120 ohms |
| Input Impedance (Typical) | 3000 Ohms |
| Max. Primary D.C. Current | 1 mA |
| Primary Nominal Impedance | 3000 ct ohms |
| Secondary D.C. Resistance | 51 ohms |
| Output Impedance (Typical) | 1000 Ohms |
| Secondary Nominal Impedance | 1000 ct ohms |
| Primary Impedance, Pin 1-3 (@ 1 KHz, 1 V OC) | 7.88K Ohm |
| Leakage Inductance, Pin 1-3 (@ 1 KHz, 1 V SC) | 6.24 mH |
| Primary Inductance, Pin 1-3 (@ 1 KHz, 1 V OC) | 923.90 mH |
| UPC | 623980190204 |
| UNSPSC | 39121301 |
| Shipping Weight | 1 lbs (0.45 kg) |
| Core | High grade silicon laminations (29M6) |
| Pins | 0.25" length & 0.035" diameter |
| Mounting | P.C. board mount, pin type |
| Construction | Low profile, open type |
| Temperature Class | Up to 105 °C |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The 141D has a nominal primary impedance of 3000 ohms center-tapped and a nominal secondary impedance of 1000 ohms center-tapped.
It is rated for 150 milliwatts output, with a maximum primary D.C. current of 1 mA.
The 141D is a P.C. board mount part with pin type terminals 0.25" long and 0.035" in diameter, in a low profile, open type construction.
The 141 Series frequency response is 200 Hz to 50 kHz, +/- 1 dB referenced at 1 kHz.
Yes. The manufacturer lists the 141D as both RoHS compliant and REACH compliant.
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