MEAN WELL GEM12I05-USB is a GEM12I medical AC/DC adapter providing 5 VDC at 2.4 A, with a catalogue maximum rated power of 12 W. This version has a built-in USB Type-A output socket. Its Class II design uses an interchangeable AC plug sold separately. Apply the model-specific load, temperature and medical-integration conditions below.
Product Datasheet
Download MEAN WELL GEM12I Datasheet (PDF)
The GEM12I section is on PDF pages 6, 7, 8, 9, 10. Refer to the complete mechanical drawings and notes when planning installation.
Model and Configuration
Complete order number
GEM12I05-USB.
Safety model number
GEM12I05.
Product type
Interchangeable-Plug Medical AC/DC Adapter; wall-mounted, single DC output.
Input construction
Class II, without a protective-earth pin; interchangeable AC plug ordered separately.
Output connection
Built-in USB Type-A socket, 5 V model.
Housing
Fully enclosed 94V-0 flame-retardant plastic case; IP21 marking in the applicable catalogue.
No-load consumption
<0.075 W.
Energy-efficiency statement
Level VI; EISA 2007 / DoE and EU ErP statements in the 2020-10-30 catalogue.
Catalogue warranty
3 years.
Intended applications include blood-glucose and blood-pressure meters, nebulizers, inhalers, portable medical equipment and sleep-apnea devices. Apply the model-specific medical and operating conditions below.
Model-Specific DC Output
Nominal output
5 VDC.
Rated output current
2.4 A.
Current range
0–2.4 A.
Catalogue-rated output power, maximum
12 W.
Ripple and noise, maximum
60 mVp-p.
Voltage tolerance
±5.0%.
Line regulation
±1.0%.
Load regulation
±5.0%.
Efficiency, typical
80%.
Observe the stated voltage, current and power ratings together. Output-voltage tolerance includes set-up tolerance, line regulation and load regulation.
Input and Timing
Voltage range
80–264 VAC or 113–370 VDC.
AC frequency
47–63 Hz.
AC input current
0.4 A at 115 VAC; 0.2 A at 230 VAC.
Cold-start inrush, maximum
30 A at 115 VAC; 60 A at 230 VAC.
Touch current
<100 µA at 264 VAC.
Set-up / rise / hold-up time
500 / 30 / 16 ms. At 115 VAC and 230 VAC, full load.
Protection
Short circuit and overload
110–200% rated output power; hiccup mode with automatic recovery after the fault condition is removed.
Overvoltage
110–140% of rated output voltage; Zener-diode clamp with output shorting.
Temperature, Input Derating and Environment
Working temperature
−20 to +70°C, subject to derating.
Ambient-temperature curve
100% load from −20 to +40°C; the chart marks 70% at +50°C and 50% at +70°C.
Input-voltage curve
80% load at 80 VAC, increasing to 100% at 115 VAC; 100% from 115 to 264 VAC.
Working humidity
20–90% RH, non-condensing.
Storage temperature and humidity
−20 to +85°C; 10–95% RH, non-condensing.
Temperature coefficient
±0.03%/°C over 0–40°C.
Vibration
10–500 Hz, 2 G; 10 minutes per cycle and 60 minutes each along X, Y and Z axes.
Apply the ambient-temperature and low-input-voltage load restrictions together; the upper operating temperature does not represent unrestricted full-load operation.
Medical Insulation and Safety
Primary-to-secondary isolation
2 × MOPP.
Electric-shock protection
Class II power unit without a protective-earth pin.
Dielectric withstand
Input to output: 5656 VDC.
Insulation resistance
Input to output: 100 MΩ at 500 VDC, 25°C and 70% RH.
Catalogue-listed safety standards
TUV EN60601-1; ANSI/AAMI ES60601-1 (3.1 version); CAN/CSA-C22.2 No. 60601-1, 3rd edition; EAC TP TC 004.
Home-healthcare standard scope
GEM12I05-USB is explicitly excluded from EN60601-1-11 and ANSI/AAMI ES60601-1-11 in the catalogue.
The catalogue identifies the adapter for BF applications. This is a power-supply selection characteristic; medical-device safety, applied-part classification and EMC compliance must be established for the complete equipment. The standards above describe this 2020-10-30 catalogue version.
Electromagnetic Compatibility
Conducted and radiated emissions
EN55011 (CISPR11), FCC Part 15 / CISPR22, Class B.
Harmonic current
EN61000-3-2, Class A.
Voltage flicker
EN61000-3-3.
Immunity framework
EN60601-1-2 and EN61204-3.
ESD
EN61000-4-2: Level 4, 15 kV air; Level 4, 8 kV contact.
Radiated RF
EN61000-4-3: Level 3, 10 V/m at 80 MHz–2.7 GHz; Table 9, 9–28 V/m at 385 MHz–5.78 GHz.
EFT bursts
EN61000-4-4: Level 3, 2 kV.
Surge
EN61000-4-5: Level 3, 1 kV line-to-line.
Conducted RF
EN61000-4-6: Level 2, 3 V.
Magnetic field
EN61000-4-8: Level 4, 30 A/m.
Dips and interruptions
EN61000-4-11: >95% dip for 0.5 periods; 30% dip for 25 periods; >95% interruption for 250 periods.
The final equipment must be checked again for whole-system EMC compliance, as required by the catalogue integration note.
Mechanical Details and Output Connection
Dimensions, L × W × H
73.9 × 39 × 48.5 mm; refer to the selected AC-plug outline in the corresponding mechanical drawing.
Single-unit catalogue mass
78.5 g, the explicit per-unit PACKING reference for USB connection.
Weight basis
Catalogue packing reference per unit; not a measured net weight or the total shipping-carton weight.
USB Type-A assignment
Using the numbering shown in the catalogue mechanical drawing: pin 1 = +V, pin 2 = D−, pin 3 = D+, pin 4 = −V.
The USB drawing identifies the contacts; it does not specify a data service or charging-negotiation protocol. The cable-termination options below describe alternative factory cable configurations, not included adapters for this USB socket.
Interchangeable AC Plugs
AC PLUG-AU2
Australian.
AC PLUG-UK2
UK.
AC PLUG-EU2
European.
AC PLUG-US2
US.
AC PLUG-MIX2
All four types.
Order the selected AC plug separately. AC PLUG-MIX2 contains the Australian, UK, European and US types. The catalogue identifies these “2” plug parts for GEM06I, GEM12I, GEM18I, GEM30I, GEM40I and GEM60I. Select the part for the actual adapter and regional outlet; the Class II adapter has no earth pin.
Optional DC Terminations and Quick Adapters
Tuning fork options, OD / ID / length (mm)
P1I: 5.5 / 2.1 / 9.5; P1L: 5.5 / 2.5 / 9.5; P1M: 5.5 / 2.5 / 11; P1IR: 5.5 / 2.1 / 9.5; P1JR: 5.5 / 2.1 / 11; P1LR: 5.5 / 2.5 / 9.5; P1MR: 5.5 / 2.5 / 11. Quick-adapter versions are listed, 7.5 A maximum.
Barrel options, OD / ID / length (mm)
P2I: 5.5 / 2.1 / 9.5; P2J: 5.5 / 2.1 / 11; P2L: 5.5 / 2.5 / 9.5; P2M: 5.5 / 2.5 / 11; P2IR: 5.5 / 2.1 / 9.5; P2JR: 5.5 / 2.1 / 11; P2LR: 5.5 / 2.5 / 9.5; P2MR: 5.5 / 2.5 / 11. No quick-adapter accessory is listed for this style.
Floating lock options, OD / ID / length (mm)
P2S (S761K): 5.53 / 2.03 / 12.06; P2K (761K): 5.53 / 2.54 / 12.06; P2C (S760K): 5.53 / 2.03 / 9.52; P2D (760K): 5.53 / 2.54 / 9.52. No quick-adapter accessory is listed for this style. SWITCHCRAFT original or equivalent.
Minimum pin options, OD / ID / length (mm)
P3A: 2.35 / 0.7 / 11; P3B: 4.0 / 1.7 / 11; P3C: 4.75 / 1.7 / 11. EIAJ equivalent; quick-adapter versions are listed, 5 A maximum.
Center pin options, OD / ID / length (mm)
P4A: 5.5 / 3.4 / 11 / 1.0; P4B: 6.5 / 4.4 / 11 / 1.4; P4C: 7.4 / 5.1 / 11 / 0.6. EIAJ equivalent; dimensions additionally include center-pin diameter; quick-adapter versions are listed, 7.5 A maximum.
R6B, locking 3-pin male mini-DIN
KYCON KPPX-3P equivalent; pins 1 and 3 = +Vo, pin 2 = −Vo. Quick-adapter accessory listed, 7.5 A maximum.
R7B, locking 4-pin male mini-DIN
KYCON KPPX-4P equivalent; pins 1 and 4 = +Vo, pins 2 and 3 = −Vo. Quick-adapter accessory listed, 7.5 A maximum.
R7BF, locking 4-pin female mini-DIN
KYCON KPJX-CM-4S equivalent; pins 1 and 4 = +Vo, pins 2 and 3 = −Vo. No quick-adapter accessory is listed.
Stripped and tinned leads
Lead 1, ribbed = +Vo; lead 2, lettered = −Vo. Lengths by request; MEAN WELL standard L = 25 mm and L1 = 10 mm. No quick-adapter accessory is listed.
The catalogue offers factory-customized cable terminations subject to minimum order quantity, or the explicitly listed quick-adapter accessories sold separately without a minimum order quantity. These are optional selections, not extra parts included with the stated USB or P1J order number.
Match connector dimensions, mating interface, contact polarity and load current before selecting an accessory. A connector or quick-adapter current ceiling does not increase the power supply rating; the complete assembly remains limited by the lowest applicable electrical rating.
Measurement Conditions and Service Information
General measurement conditions
230 VAC input, rated load, 25°C and 70% RH unless otherwise specified.
DC voltage set point
Measured at the output-plug terminal at 50% load.
Ripple/noise measurement
20 MHz bandwidth; 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
Line-regulation test
Low-line to high-line input at rated load.
Load-regulation test
10% to 100% rated output load.
Catalogue life
3 years at 100% load, 40°C and 12 hours/day.
MTBF, minimum
400 thousand hours, MIL-HDBK-217F at 25°C.
Catalogue version
2020-10-30; combined PDF pages 6–10.
Use the manufacturer’s installation instructions for the supplied configuration. The catalogue life and MTBF entries are conditional reference data, distinct from the listed warranty.
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