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Mean Well

Mean Well SKA15B-033 DC-DC Converter - 15W - 18~36V in 3.3V out 3A

SKU SKA15B-033
$22.90 USD
Shipping calculated at checkout.
In stock
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Overview

SKA15B-033 is the 3.3V output model of this series: rated power 9.9W, typical efficiency 76%.

Features

  • 2:1 wide input range
  • 4:1 wide input range(option)
  • 1500VDC I/O isolation
  • 3000VDC I/O isolation(option)
  • Built-in EMI filter
  • Protections: Short circuit / Overload
  • 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

SKA15B-033Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC VOLTAGE
3.3V
CURRENT RANGE
300 ~ 3000mA
RATED POWER
9.9W
RIPPLE & NOISE (max.)Note.2
50mVp-p
LINE REGULATIONNote.3
±0.2%
LOAD REGULATIONNote.4
±0.5%
VOLTAGE ACCURACY
±2.0%
SWITCHING FREQUENCY
150KHz min.
EXTERNAL CAPACITANCE LOAD (max.)
2700uF

INPUT

VOLTAGE RANGE
18 ~ 36VDC
EFFICIENCY (Typ.)
76%
DC CURRENT Full load
800mA
DC CURRENT No load
30mA
FILTER
Pi network
PROTECTION
Fuse recommended

PROTECTION (Note. 5)

OVER CURRENT
110% ~ 250% 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

ENVIRONMENT

WORKING TEMP.
-40 ~ +71℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +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 020/2011approved
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

MTBF
300Khrs min. MIL-HDBK-217F(25℃)
DIMENSION
50.8*25.4*11.27 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. 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

SKA15B-033 Mechanical Specification
Mechanical Specification
SKA15B-033 Packing
Packing

Downloads

FAQ

Can I use the SKA15B-033 to power 3.3V control logic from an 18-36VDC source?

Yes, this model is built for an 18-36VDC input range and provides a constant 3.3V output. It delivers up to 3A with a 9.9W rating, which suits low-voltage logic and controller circuits that need stable power.

Is the SKA15B-033 suitable for embedded computing or communication boards that run on 3.3V?

It is a practical choice for 3.3V embedded electronics that need a regulated supply from a higher input range of 18-36VDC. The 3A output capability and 9.9W power class support standard 3.3V loads.

Can this converter be used for 3.3V sensor-processing or automation interface electronics?

Yes, it fits automation subsystems that require constant 3.3V output rather than a higher-voltage rail. With up to 3A output current and 9.9W total output power, it is suited to denser 3.3V electronics as long as the load stays within that rating.

Is the SKA15B-033 useful when I need compact 3.3V conversion in a control cabinet?

The package size is 50.8 × 25.4 × 11.27 mm and the weight is 31.2g, so it remains compact despite the 9.9W rating. That helps in control or embedded assemblies where a small footprint matters.

Can the SKA15B-033 be used in outdoor equipment or only protected enclosures?

Its operating temperature range is -40°C to +71°C, so it covers a wide range of industrial temperatures. No IP rating is given, so it should be treated as a converter for protected indoor panels or enclosed housings rather than direct outdoor exposure.

How does the SKA15B-033 compare with the other SKA15B models?

The SKA15B family uses the same 18-36VDC input range and the same housing size. The output options are 3.3V at 3A (9.9W) for SKA15B-033, 5V at 3A (15W) for SKA15B-05, 12V at 1.25A (15W) for SKA15B-12, and 15V at 1A (15W) for SKA15B-15.

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Mean Well SKA15B-033 DC-DC Converter - 15W - 18~36V in 3.3V out 3A
Mean Well

Mean Well SKA15B-033 DC-DC Converter - 15W - 18~36V in 3.3V out 3A

$22.90 USD

SKA15B-033 is the 3.3V output model of this series: rated power 9.9W, typical efficiency 76%.

Features

  • 2:1 wide input range
  • 4:1 wide input range(option)
  • 1500VDC I/O isolation
  • 3000VDC I/O isolation(option)
  • Built-in EMI filter
  • Protections: Short circuit / Overload
  • 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
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