DC-DC Converter, 40W, Ultra-wide 8:1 Input Voltage Range, Compact 2" x 1" Size
YNC40 Series
High-efficiency 40W DC to DC Power Conversion with 2.25KV Isolation for Industrial Control, Telecom, and Energy Applications
This 40W DC-DC converter delivers an ultra-wide 8:1 input voltage range in a compact 2" x 1" package. It features reinforced 2250VDC isolation and supports both single and dual output models. With efficiency reaching up to 91%, the converter ensures stable and energy-saving operation across -40°C to +60°C. They are widely used in industrial automation equipment, telecom systems, smart factory solutions, battery management, and renewable energy devices.
Yuan Dean DC-DC converters are RoHS-compliant and customizable to meet specific requirements. All products come with a 3-year warranty, and OEM/ODM projects are welcome.
Features
- 40W DIL Package.
- 8:1 Wide Input Voltage Range.
- High Efficiency Up To 91%.
- Regulated Output Types.
- No Minimum Load Required.
- Over Power and Short Circuit Protection.
- Over Temperature Protection.
- Operating Temperature: -40°C To +60°C.
- UL94V-0 Package Material.
- UL/cUL/IEC/EN 62368-1 approved, CB-Report, CE Marking.
- EMC standard of EMI EN55032:2015 approved.
- EMC standard of EMS EN55035:2017 approved.
- EMC standard of Canadian ICES-003 issue7(2020) approved.
- EMC standard of 47CFR FCC Part 15 subpart B approved.
Applications
- Industry equipment.
- Sensing equipment.
- Instruments.
- Wireless Network.
- Telecom/Datacom.
- Measurement.
- Aviation.
Specifications typical at TA = 25°C, nominal input voltage and rated output current unless otherwise specified
| Part Number | Input Voltage Range |
Input Current | Output Voltage | Output Current | Efficiency (@36Vin) |
Maximum Capacitor Load |
|
|---|---|---|---|---|---|---|---|
| No-Load | Full Load | ||||||
| Vdc | (mA TYP) | (mA TYP) | Vdc | mA(TYP) | %(TYP) | μF | |
| YNC40-36S05 | 9-75 | 8 | 1235 | 5 | 8000 | 90 | 13600 |
| YNC40-36S12 | 9-75 | 8 | 1221 | 12 | 3333 | 91 | 2400 |
| YNC40-36S15 | 9-75 | 8 | 1221 | 15 | 2667 | 91 | 1500 |
| YNC40-36S24 | 9-75 | 8 | 1221 | 24 | 1667 | 91 | 600 |
| YNC40-36S48 | 9-75 | 8 | 1221 | 48 | 833 | 91 | 120 |
| YNC40-36D12 | 9-75 | 8 | 1221 | ± 12 | ± 1667 | 91 | ± 1200 |
| YNC40-36D15 | 9-75 | 8 | 1221 | ± 15 | ± 1333 | 91 | ± 800 |
Input Specifications
| Parameters | Conditions | Min | Typ | Max | Units | |
|---|---|---|---|---|---|---|
| Input Voltage | 9 | 36 | 75 | Vdc | ||
| Input Surge Voltage (100 ms max.) |
-0.7 | 100 | Vdc | |||
| Start-up Voltage | 9 | Vdc | ||||
| Under Voltage Shutdown | 7.5 | Vdc | ||||
| Start-up Time | Constant Resistive Load, Nominal Vin |
Power-up | 35 | ms | ||
| Remote ON/OFF | 35 | |||||
| Input Filter | All Models | Internal Pi type | ||||
| Remote ON/OFF (Ctrl PIN Refer To –Vin PIN) |
Positive Logic (Standard) |
DC/DC ON | Open or 3.5 Vdc – 12 Vdc | |||
| DC/DC OFF | Short or 0 Vdc – 1.2 Vdc | |||||
| Input Current of Ctrl PIN | -0.5 | +0.5 | mA | |||
| Remote Off Input Current | 3 | |||||
Output Specifications
| Parameters | Conditions | Min | Typ | Max | Units | |
|---|---|---|---|---|---|---|
| Voltage Tolerance | 100% Load | -2 | +2 | % | ||
| Line Regulation | Vin(min) to Vin(max) @100% Load | -0.2 | +0.2 | % | ||
| Load Regulation | 0% Load to 100% Load | -0.5 | +0.5 | % | ||
| Ripple & Noise (BW=20MHz) |
With an 1uF MLCC | 5Vout | 100 | mVp-p | ||
| 12Vout | 150 | |||||
| 15Vout | 150 | |||||
| 24Vout | 150 | |||||
| 48Vout | 200 | |||||
| Transient Response Setting Time | 25% Load Step Change | 350 | 650 | us | ||
| Transient Response Deviation | 25% load step change | -5 | ±3 | +5 | % | |
| Temperature Coefficient | -0.02 | +0.02 | %/°C | |||
| Voltage Adjustability | % of Vout | -10 | +10 | % | ||
| Output Power Protection | % of Io, Hiccup mode, Auto-recovery |
115 | 150 | 185 | % | |
| Short Circuit Protection | Continuous [Hiccup Mode], Auto-Recovery | |||||
| Over Voltage Protection | 5Vout | 6.2 | Vdc | |||
| 12Vout, ±12Vout | 15 | |||||
| 15Vout, ±15Vout | 18 | |||||
| 24Vout | 30 | |||||
| 48Vout | 60 | |||||
General Specifications
| Parameters | Conditions | Min | Typ | Max | Units | |
|---|---|---|---|---|---|---|
| Isolation Voltage | Input to Output (60sec) | 2250 | Vdc | |||
| Input (Output) to Case (60sec) | 1000 | Vdc | ||||
| Isolation Resistance | 500Vdc | 1000 | MΩ | |||
| Isolation Capacitance | 100kHz, 1V | 2200 | pF | |||
| Switching Frequency | Full Load, Nominal Input |
5Vout, 48Vout | 185 | KHz | ||
| Other | 230 | |||||
| Operating Ambient Temperature (Power Derating See Derating Graph) |
Nominal Vin, 100% Load |
YNC40-36S05 | -40 | 60 | °C | |
| YNC40-36S12, YNC40-36S15, YNC40-36S24, YNC40-36S48, YNC40-36D12, YNC40-36D15 |
65 | Thermal Impedance | 20LFM | 10 | °C/W | |
| 100LFM | 8.8 | |||||
| 200LFM | 6.8 | |||||
| 400LFM | 4.9 | |||||
| Maximum Case Temperature | 105 | °C | ||||
| Over Temperature Protection | Case temperature | 115 | °C | |||
| Storage Temperature | -55 | 125 | °C | |||
| Humidity | Non Condensing | 5 | 95 | % | ||
| Cooling | Natural Convection | |||||
| Case Material | Copper | |||||
| Potting Material | Silicone (UL94-V0) | |||||
| MTBF | MIL-HDBK-217F@25℃ (calculated) | 4.15x105 | Hours | |||
| Weight | 50 | g | ||||
| Dimensions | 50.8 x 25.4 x 11.6 | mm | ||||
Certification



- Markings and Dimensions
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Details - Files Download
-
8:1 Wide Input Voltage DC-DC Converter 40W DIP Package YNC40 Series
40W 2.25KV Isolation 8:1 Wide Input Voltages Range DC-DC Converter PDF Catalogue
DownloadYNC40 Series UL Certificate File
8:1 Wide Input YNC40 Series DC-DC Converter UL 62368-1 Certificate File
DownloadYNC40 Series CE Certificate File
2'' x 1'' Size 40W YNC40 Series DC-DC Converter CE Certificate File
DownloadYNC40 Series ICES-003 issue7 Certificate File
Regulated Output YNC40 Series DC-DC Converter CE-ICES-003 issue7 Certificate File
DownloadYNC40 Series 47-CFR FCC Part 15 Certificate File
40W DIL Package YNC40 Series DC-DC Converter CE-47-CFR FCC Part 15 Certificate File
DownloadYNC40 Series CB Certificate File
Wide Input 8:1 Voltage Range YNC40 Series DC-DC Converter CB Certificate File
Download
DC-DC Converter, 40W, Ultra-wide 8:1 Input Voltage Range, Compact 2" x 1" Size - High-efficiency 40W DC to DC Power Conversion with 2.25KV Isolation for Industrial Control, Telecom, and Energy Applications | Taiwan-Based Power Supply & Magnetic Components Manufacturer | YUAN DEAN SCIENTIFIC CO., LTD.
Based in Taiwan since 1990, YUAN DEAN SCIENTIFIC CO., LTD. has been a power converter, transformer, magnetic components manufacturer in Electronic Components Industry. Their main products, include DC-DC Converter, 40W, Ultra-wide 8:1 Input Voltage Range, Compact 2" x 1" Size, DC-DC Converters, AC-DC Converters, RJ45 Magnetics, Converter Transformers, LAN Filters, High Frequency Transformers, POE Transformers, Inductors and LED drivers, which are RoHS approved with ERP system implemented.
YDS was established in 1990 at Tainan, Taiwan and our factory Ho Mao electronics was established in 1995 at Xiamen, China. We are the leading electronic manufacturer with ISO 9001, ISO 14001 and IATF16949 certified. We Produce various products such as DC/DC converter, AC/DC converter, RJ45 with magnetics, 10/100/1G/2.5G/10G Base-T Lan filter, all kinds of Transformer,Lighting products and Power bank. ISO 9001 & ISO 14001, IATF16949 certified power converter, high frequency transformer, magnetic component with reliable EMC and EMI / EMS / EDS lab tests. Power converter solutions for medical, railway, POE, etc.
YDS has been offering customers high-quality power supply and magnetic components, both with advanced technology and 25 years of experience, YDS ensures each customer's demands are met.



















