Through Hole Audio Transformer 1 + 1kΩ
- RS Stock No.:
- 123-7198
- Mfr. Part No.:
- A187A10C
- Brand:
- OEP
Bulk discount available
Subtotal (1 unit)*
£57.21
(exc. VAT)
£68.65
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- Plus 2 unit(s) shipping from 20 October 2025
- Plus 25 unit(s) shipping from 06 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 - 9 | £57.21 |
| 10 + | £51.49 |
*price indicative
- RS Stock No.:
- 123-7198
- Mfr. Part No.:
- A187A10C
- Brand:
- OEP
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | OEP | |
| Primary Impedance | 140kΩ | |
| Secondary Impedance | 1 + 1kΩ | |
| Primary DC Resistance | 3.2kΩ | |
| Secondary DC Resistance | 314Ω | |
| Dimensions | 29.4 x 25 x 24.2mm | |
| Mounting Type | Through Hole | |
| Termination Type | PC Pin | |
| Weight | 56g | |
| Depth | 24.2mm | |
| Length | 29.4mm | |
| Width | 25mm | |
| Minimum Operating Frequency | 10Hz | |
| Turns Ratio | 11.5:1+1 | |
| Minimum Temperature | 0°C | |
| Core Type | Laminated | |
| Isolation Voltage | 250V | |
| Maximum Temperature | +70°C | |
| Construction | Enclosed | |
| Maximum Operating Frequency | 25kHz | |
Select all | ||
|---|---|---|
Brand OEP | ||
Primary Impedance 140kΩ | ||
Secondary Impedance 1 + 1kΩ | ||
Primary DC Resistance 3.2kΩ | ||
Secondary DC Resistance 314Ω | ||
Dimensions 29.4 x 25 x 24.2mm | ||
Mounting Type Through Hole | ||
Termination Type PC Pin | ||
Weight 56g | ||
Depth 24.2mm | ||
Length 29.4mm | ||
Width 25mm | ||
Minimum Operating Frequency 10Hz | ||
Turns Ratio 11.5:1+1 | ||
Minimum Temperature 0°C | ||
Core Type Laminated | ||
Isolation Voltage 250V | ||
Maximum Temperature +70°C | ||
Construction Enclosed | ||
Maximum Operating Frequency 25kHz | ||
- COO (Country of Origin):
- GB
OEP A187A10C Audio Input Transformers
A187A10C audio input transformers from OEP have multiple electrostatic and magnetic shields and provide galvanic isolation. The A187A10C transformer is a high ratio step down transformer featuring Faraday shielding that reduces hum and stray magnetic interference.
+21.5dbu maximum input level at 20 Hz with >1% distortion
250 Vrms proof voltage from winding to winding and screens to winding
155 mH primary leakage inductance at 1 kHz
42 pF interwinding capacitance at 1 kHz for primary to secondary 1
63 pF interwinding capacitance at 1 kHz for primary to secondary 2
39 pF interwinding capacitance at 1 kHz for primary to shield
250 Vrms proof voltage from winding to winding and screens to winding
155 mH primary leakage inductance at 1 kHz
42 pF interwinding capacitance at 1 kHz for primary to secondary 1
63 pF interwinding capacitance at 1 kHz for primary to secondary 2
39 pF interwinding capacitance at 1 kHz for primary to shield
Product Application Information
These audio input transformers are suitable for long cable runs without HF loss. They can be used for coupling instrument pickups to low impedance microphone inputs and unbalanced line level to balanced microphone outputs.
Note
Do not pass DC through the windings.
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