B05_S-1WR3
Isolated DC-DC converterThe B05_S-1WR3 is a isolated dc-dc converter from Mornsun. View the full B05_S-1WR3 datasheet below including key specifications.
Official B05_S-1WR3 datasheet (PDF) — the source this page was extracted from.
B05_S-1WR3 Key Specifications
| Parameter | Value |
|---|---|
| Weight | 1.3g (Typ.) |
| Output Power | 1W |
| Package Dimensions | 11.60 x 6.00 x 10.16mm |
| Input Voltage Range | 4.5V to 5.5V |
| Switching Frequency | 270kHz |
| Output Voltage Range | 3.3V to 24V |
| I/O Isolation Voltage | 1.5kVDC (1 min), 3kVDC (1 sec) |
| No-Load Input Current | 5mA (min) |
| Max Output Current Range | 42mA to 303mA |
| Typical Efficiency Range | 74% to 85% |
| Operating Temperature Range | -40°C to +105°C |
B05_S-1WR3 Overview
Part: B05_S-1WR3 Series — MORNSUN Guangzhou Science & Technology Co., Ltd.
Type: Isolated DC-DC Converter
Description: 1W isolated DC-DC converter with fixed 5 V input, unregulated single output, and up to 85% efficiency.
Operating Conditions:
- Supply voltage: 4.5–5.5 VDC
- Operating temperature: -40 to +105 °C
- Output voltage: 3.3, 5, 9, 12, 15, 24 VDC (model dependent)
Absolute Maximum Ratings:
- Max supply voltage: 9 VDC (surge, 1 sec max)
- Max junction/storage temperature: 125 °C
Key Specs:
- Input voltage: 5 VDC nominal (4.5-5.5 VDC range)
- Output current: Up to 303 mA (for 3.3V output)
- Full load efficiency: Up to 85% (for 24V output)
- I/O Isolation voltage: 1500 VDC (1 min), 3000 VDC (1 sec)
- Load regulation: 5% to 20% (10%-100% load, output dependent)
- Ripple & Noise (20MHz bandwidth): 30 mVp-p (typ, other outputs), 50 mVp-p (typ, 24VDC output)
- Switching frequency: 270 kHz (typ, 100% load, nominal input)
- MTBF: 3500 k hours (MIL-HDBK-217F@25 °C)
Features:
- Continuous short-circuit protection
- No-load input current as low as 5mA
- Operating ambient temperature range: -40 °C to +105 °C
- High efficiency up to 85%
- I/O Isolation test voltage: 1.5k VDC/min, 3k VDC/1s
- Industry standard pin-out
- Compact SIP package
Applications:
- Pure digital circuits
- Low frequency analog circuits
- Relay-driven circuits
- Data switching circuits
Package:
- SIP (11.60 x 6.00 x 10.16mm)
B05_S-1WR3 Features
- Continuous short-circuit protection
- No-load input current as low as 5mA
- Operating ambient temperature range: -40 °C to +105 °C
- High efficiency up to 85%
- I/O Isolation test voltage: 1.5k VDC/min, 3k VDC/1s
- Industry standard pin-out
- Compact SIP package
Fig. 1
| Ripple & Noise* | 20MHz bandwidth | Other output 24VDC output | -- | 30 50 | 75 100 | mVp-p |
|---|---|---|---|---|---|---|
| Ripple & Noise* | 20MHz bandwidth | -- | mVp-p | |||
| Temperature Coefficient | 100% load | -- | ±0.02 | -- | %/ °C | |
| Short-circuit Protection | Continuous, self-recovery | Continuous, self-recovery | Continuous, self-recovery | Continuous, self-recovery | ||
| Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. | Note:* The 'parallel cable' method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for specific information. |
| General Specifications | General Specifications | General Specifications | General Specifications | General Specifications | General Specifications | General Specifications |
|---|---|---|---|---|---|---|
| Item | Operating Conditions | Operating Conditions | Min. | Typ. | Max. | Unit |
| Isolation | Input-output electric strength test for 1 minute with a leakage current of 1mA max. | Input-output electric strength test for 1 minute with a leakage current of 1mA max. | 1500 | -- | -- | VDC |
| Isolation | Input-output electric strength test for 1 second with a leakage current of 1mA max. | Input-output electric strength test for 1 second with a leakage current of 1mA max. | 3000 | -- | -- | VDC |
| Insulation Resistance | Input-output resistance at 500VDC | Input-output resistance at 500VDC | 1000 | -- | -- | M Ω |
| Isolation Capacitance | Input-output capacitance at 100kHz/0.1V | Input-output capacitance at 100kHz/0.1V | -- | 20 | -- | pF |
| Operating Temperature | Derating when operating temperature ≥ 85 °C , (see Fig. 2) | Derating when operating temperature ≥ 85 °C , (see Fig. 2) | -40 | -- | 105 | |
| Storage Temperature | Storage Temperature | -55 | -- | 125 | ||
| Case Temperature Rise | Ta=25 °C | 3.3VDC output | -- | 25 | -- | °C |
| Case Temperature Rise | Ta=25 °C | Other output | -- | 15 | -- | |
| Pin Soldering Resistance Temperature | Soldering spot is 1.5mm away from case for 10 seconds | Soldering spot is 1.5mm away from case for 10 seconds | -- | -- | 300 | |
| Storage Humidity | Non-condensing | Non-condensing | -- | -- | 95 | %RH |
| Switching Frequency | 100% load, nominal input voltage | 100% load, nominal input voltage | -- | 270 | -- | kHz |
| MTBF | MIL-HDBK-217F@25 °C | MIL-HDBK-217F@25 °C | 3500 | -- | -- | k hours |
| Mechanical Specifications | Mechanical Specifications |
|---|---|
| Case Material | Black plastic; flame-retardant and heat-resistant plastic (UL94 V-0) |
| Dimensions | 11.60 x 6.00 x 10.16mm |
| Weight | 1.3g(Typ.) |
| Cooling Method | Free air convection |
| Electromagnetic Compatibility (EMC) | Electromagnetic Compatibility (EMC) | Electromagnetic Compatibility (EMC) | Electromagnetic Compatibility (EMC) | Electromagnetic Compatibility (EMC) |
|---|---|---|---|---|
| Emissions | CE | CISPR32/EN55032 | CLASS B (see Fig. 4 for recommended circuit) | CLASS B (see Fig. 4 for recommended circuit) |
| Emissions | RE | CISPR32/EN55032 | CLASS B (see Fig. 4 for recommended circuit) | CLASS B (see Fig. 4 for recommended circuit) |
| lmmunity | ESD | IEC/EN61000-4-2 | Air ±8kV, Contact ±4kV | perf. Criteria B |
B05_S-1WR3 Typical Application
Input and/or output ripple can be further reduced, by connecting a filter capacitor from the input and/or output terminals to ground as shown in Fig. 3.
Choosing suitable filter capacitor values is very important for a smooth operation of the modules, particularly to avoid start-up problems caused by capacitor values that are too high. For recommended input and output capacitor values refer to Table 1.
| Recommended capacitive load value table (Table 1) | Recommended capacitive load value table (Table 1) | Recommended capacitive load value table (Table 1) | Recommended capacitive load value table (Table 1) |
|---|---|---|---|
| Vin | Cin | Vout | Cout |
| 5VDC | 4.7μF/16V | 3.3/5VDC | 10μF/16V |
| -- | -- | 9/12VDC | 2.2μF/25V |
| -- | -- | 15/24VDC | 1μF/50V |
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| B0505S-1WR3 | Mornsun | 4-SIP Module |
More datasheets
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