TRACOPOWER TRN 3 DC-DC Converter, 12V dc/ 250mA Output, 9 → 18 V dc Input, 3W, Through Hole, +85°C Max Temp
- RS Stock No.:
- 137-2879
- Mfr. Part No.:
- TRN 3-1212
- Brand:
- TRACOPOWER
Bulk discount available
Subtotal (1 tube of 10 units)*
£165.67
(exc. VAT)
£198.80
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- 1 unit(s) shipping from 11 December 2025
- Plus 1 unit(s) shipping from 05 February 2026
- Plus 1 unit(s) shipping from 12 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
| Tube(s) | Per Tube | Per unit* | 
|---|---|---|
| 1 - 4 | £165.67 | £16.567 | 
| 5 - 9 | £160.69 | £16.069 | 
| 10 - 24 | £155.74 | £15.574 | 
| 25 - 49 | £149.10 | £14.91 | 
| 50 + | £142.48 | £14.248 | 
*price indicative
- RS Stock No.:
- 137-2879
- Mfr. Part No.:
- TRN 3-1212
- Brand:
- TRACOPOWER
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
| Select all | Attribute | Value | 
|---|---|---|
| Brand | TRACOPOWER | |
| Output Voltage | 12V dc | |
| Input Voltage Range | 9 → 18 V dc | |
| Power Rating | 3W | |
| Input Voltage Nominal | 12 V dc | |
| Output Current | 250mA | |
| Mounting Type | Through Hole | |
| Isolated | Yes | |
| Number of Outputs | 1 | |
| Package | SIP | |
| Isolation Voltage | 1.6kV dc | |
| Width | 11mm | |
| Length | 11.9mm | |
| Depth | 7.7mm | |
| Series | TRN 3 | |
| Load Regulation | 0.01 | |
| Efficiency | 84% | |
| Minimum Temperature | -40°C | |
| Maximum Temperature | +85°C | |
| Select all | ||
|---|---|---|
| Brand TRACOPOWER | ||
| Output Voltage 12V dc | ||
| Input Voltage Range 9 → 18 V dc | ||
| Power Rating 3W | ||
| Input Voltage Nominal 12 V dc | ||
| Output Current 250mA | ||
| Mounting Type Through Hole | ||
| Isolated Yes | ||
| Number of Outputs 1 | ||
| Package SIP | ||
| Isolation Voltage 1.6kV dc | ||
| Width 11mm | ||
| Length 11.9mm | ||
| Depth 7.7mm | ||
| Series TRN 3 | ||
| Load Regulation 0.01 | ||
| Efficiency 84% | ||
| Minimum Temperature -40°C | ||
| Maximum Temperature +85°C | ||
- COO (Country of Origin):
- TW
Traco Power DC-DC Converter, 15ms Maximum Startup Time, 1Gohm Insulation Resistance - TRN 3 Series - TRN 3-1212
Looking for a space-efficient power distribution solution for your PCB-linked components? This DC-DC converter from Traco Power keeps things compact. It has dimensions of 11.9 (L) x 11.0 (W) x 7.7mm (D), so takes up minimal room on your board. It safeguards equipment by creating a 1.6kV isolation barrier between the input and output terminals to shrug off power spikes. The converter regulates supply voltages ranging from 9 to 18V DC to deliver a stable 12V DC output that's well-suited to units like LED lamps and sensors. An integrated capacitor-type filter ensures you get a noiseless signal.
Features & Benefits
• Through-hole mounting achieves a permanent, vibration-proof link to your circuit board
• Power rating of 3W for use in light-duty applications
• 84% efficiency for maximum productivity and minimal energy loss to heat
• Resists up to ±8kV of ESD in air and ±6kV on contact for high-quality signal transmission
• Power rating of 3W for use in light-duty applications
• 84% efficiency for maximum productivity and minimal energy loss to heat
• Resists up to ±8kV of ESD in air and ±6kV on contact for high-quality signal transmission
Applications
• Mobile phones and tablets
• Industrial lighting systems
• Smart homes
• Industrial lighting systems
• Smart homes
How reliable is this DC-DC converter?
This unit has a mean time between failures of more than 2 million hours, so you can be sure of its long-term performance.
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