Over 15 years experience of providing support of MEAN WELL Power Supplies
Overview
SKM30B-12 is the 12V output model of this series: rated power 30W, typical efficiency 89%.
Features
- 2"x1" compact size
- 2:1 wide input range
- High efficiency up to 90%
- 1500VDC I/O isolation
- Built-in remote ON/OFF control
- Built-in trimming output
- Comply with CE / FCC without external components
- Protections: Short circuit / Overload / Input and Output Over voltage
- Cooling by free air convection
- Six-sided shield metal case
- 100% burn-in test
- Low cost / High reliability
- Approvals: FCC / EAC / CE / UKCA
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 12V
- CURRENT RANGE
- 0.25 ~ 2.5A
- RATED POWER
- 30W
- RIPPLE & NOISE (max.)Note.2
- 120mVp-p
- LINE REGULATIONNote.3
- ±0.2%
- LOAD REGULATIONNote.4
- ±0.5%
- VOLTAGE ACCURACY
- ±2.0%
- SWITCHING FREQUENCY
- 300KHz typ.
- EXTERNAL CAPACITANCE LOAD (max.)
- 220uF
- EXTERNAL TRIM Adj. RANGE(Typ.)
- -20 ~ +10%
INPUT
- VOLTAGE RANGE
- 18 ~ 36VDC
- UNDER VOLTAGE SHUTDOWN
- 16VDC
- EFFICIENCY (Typ.)
- 89%
- DC CURRENT Full load
- 1420mA
- DC CURRENT No load
- 40mA
- FILTER
- Pi network
- REMOTE CONTROL
- Power ON : R.C ~ -Vin > 2.5V ~ 30VDC or open circuit ; Power OFF : R.C ~ -Vin < 0.5VDC or short
- PROTECTION
- Fuse recommended
PROTECTION (Note. 5)
- OVER CURRENT
- 110% ~ 180% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- SHORT CIRCUIT
- All output equipped with short circuit Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE Input(Typ.)
- >40 ~ 50VDC
- OVER VOLTAGE Output(Typ.)
- 5Vo : 7V ~ 8.95V ; 12Vo : 15V ~ 19.2V ; 15Vo : 18V ~ 23.3V Protection type : Clamp by TVS diode
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +75℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -55 ~ +125℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 (EAC TP TC 004 for 48Vin type only) approved
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVDC
- ISOLATION RESISTANCE
- I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/ EN55032 Class A, FCC part 15 Class A without external components, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/ EN61000-4-2,3,4,5,6,8, light industry level, criteria A, EAC TP TC 020
OTHERS
- MTBF
- 700Khrs min. MIL-HDBK-217F(25℃)
- DIMENSION
- 50.8*25.4*11.2 mm or 2"*1"*0.44" inch (L*W*H)
- PACKING
- 31.2g ; 10pcs/per tube, 400pcs/40 tube/per carton
Test conditions and notes5
- 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
- 3.Line regulation is measured from low line to high line at rated load.
- 4.Load regulation is measured from 10% to 100% rated load.
- 5.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.
Technical drawings
Downloads
FAQ
Can I use the SKM30B-12 for 12V automation and industrial panel electronics?
Yes, it delivers constant 12V output at up to 2.5A, with a total 30W rating. It is suited to 12V panel and automation electronics when the available input is within 18-36VDC.
Is the SKM30B-12 appropriate for embedded 12V subsystems in industrial equipment?
It can be used for embedded 12V subsystems that require constant-voltage output and stay within 2.5A. The compact 50.8 × 25.4 × 11.2 mm form factor can also be useful where installation space is limited.
Can this converter support 12V sensing, display, or control devices?
This model is intended for 12V loads with a combined demand up to 30W. It is relevant for 12V sensing, display, or control devices powered from an 18-36VDC source.
Will the SKM30B-12 handle cold and hot operating conditions?
The stated operating temperature is -40°C to +75°C, so it is specified for a wide temperature span. No IP rating is provided, so environmental sealing and outdoor suitability are not defined by the listed specs.
Which SKM30B model should I choose if I am comparing output options only?
The main difference inside the SKM30B family is output rating, while all models use 18-36VDC input and are rated at 30W. SKM30B-05 outputs 5V at 6A, SKM30B-12 outputs 12V at 2.5A, and SKM30B-15 outputs 15V at 2A.
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