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Mean Well

Mean Well SKA40B-12 DC-DC Converter - 35W - 18~36V in 12V out 3.33A

SKU SKA40B-12
$47.46 USD
Shipping calculated at checkout.
Available to order
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Overview

SKA40B-12 is the 12V output model of this series: rated power 40W, typical efficiency 90%.

Features

  • 2:1 wide input range
  • High efficiency up to 92%
  • 1500VDC I/O isolation
  • Built-in EMI filter
  • Built-in remote ON / OFF control
  • Built-in remote sense
  • Trimming output ±10%
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Six-sided shield metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Output 3.3V/9V available
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty

Specifications

SKA40B-12Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC VOLTAGE
12V
CURRENT RANGE
0.3 ~ 3.33A
RATED POWER
40W
RIPPLE & NOISE (max.)Note.2
80mVp-p
LINE REGULATIONNote.3
±0.5%
LOAD REGULATIONNote.4
±0.5%
VOLTAGE ACCURACY
±2.0%
SWITCHING FREQUENCY
200KHz min.
EXTERNAL CAPACITANCE LOAD (max.)
1000uF
EXTERNAL TRIM Adj. RANGE(Typ.)
±10%

INPUT

VOLTAGE RANGE
18 ~ 36VDC
EFFICIENCY (Typ.)
90%
DC CURRENT Full load
1900mA
DC CURRENT No load
100mA
FILTER
Pi network
REMOTE CONTROL
Power ON : R.C ~ -Vin > 2.5V ~ 75VDC 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
5Vo : 7V ~ 8.95V ; 12Vo : 15V ~ 19.2V ; 15Vo : 18V ~ 23.3V Protection type : Clamp by TVS diode

ENVIRONMENT

WORKING TEMP.
-40 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-55 ~ +105℃, 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, 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

DIMENSION
50.8*50.8*11.0 mm or 2"*2"*0.43" inch (L*W*H)
PACKING
50g ; 5pcs/per tube, 200pcs/40 tube/per carton
Test conditions and notes5
  1. 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
  3. 3.Line regulation is measured from low line to high line at rated load.
  4. 4.Load regulation is measured from 10% to 100% rated load.
  5. 5.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.

Technical drawings

SKA40B-12 Mechanical Specification
Mechanical Specification
SKA40B-12 Packing
Packing

Downloads

FAQ

Can I use the SKA40B-12 to power a 12V PLC or industrial control circuit?

Yes, this model provides a constant 12V output and is rated for 35W with up to 3.33A output current. That makes it suitable for 12V control electronics, PLC-related loads, and other embedded or automation devices that stay within those output limits.

Is the SKA40B-12 a good fit for 12V embedded systems inside equipment cabinets?

It can fit compact embedded designs because it delivers constant 12V output in a 50.8 × 50.8 × 11.0 mm package and weighs 0.06 kg. It is intended for loads that need 12V and do not exceed 35W or 3.33A.

Can this converter be used for 12V monitoring, alarm, or telecom-style control devices?

It can be used for 12V devices in monitoring or control applications when the source is within the 18-36VAC input range. The output is constant voltage at 12V, with a 35W rating and 3.33A maximum output current.

Will the SKA40B-12 work in cold or hot industrial environments?

The specified operating temperature range is -40°C to +80°C, so it is designed for a wide temperature span. That makes it suitable for equipment that must operate in both low-temperature and high-temperature indoor industrial conditions.

Is the SKA40B-12 suitable for outdoor or washdown locations?

The provided specs list an operating temperature range of -40°C to +80°C, but no IP rating is given. Without an IP rating in the specs, it is better treated as a unit for protected enclosures rather than exposed outdoor or washdown use.

How does the SKA40B-12 compare with the other SKA40B output options?

Within the SKA40B series, all listed models are rated at 35W. The SKA40B-05 outputs 5V at 7A, the SKA40B-12 outputs 12V at 3.33A, and the SKA40B-15 outputs 15V at 2.67A.

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Mean Well SKA40B-12 DC-DC Converter - 35W - 18~36V in 12V out 3.33A
Mean Well

Mean Well SKA40B-12 DC-DC Converter - 35W - 18~36V in 12V out 3.33A

$47.46 USD

SKA40B-12 is the 12V output model of this series: rated power 40W, typical efficiency 90%.

Features

  • 2:1 wide input range
  • High efficiency up to 92%
  • 1500VDC I/O isolation
  • Built-in EMI filter
  • Built-in remote ON / OFF control
  • Built-in remote sense
  • Trimming output ±10%
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • Six-sided shield metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Output 3.3V/9V available
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty
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