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Mean Well

Mean Well SKA15A-033 DC-DC Converter - 9.9W - 9~18V in 3.3V out 3A

SKU SKA15A-033
$22.90 USD
Shipping calculated at checkout.
In stock
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Overview

SKA15A-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

SKA15A-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
9 ~ 18VDC
EFFICIENCY (Typ.)
76%
DC CURRENT Full load
1700mA
DC CURRENT No load
20mA
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

SKA15A-033 Mechanical Specification
Mechanical Specification
SKA15A-033 Packing
Packing

Downloads

FAQ

Can I use the SKA15A-033 to power 3.3V industrial control electronics from a 9-18VDC source?

Yes, this model is designed for a 9-18VDC input and provides a constant 3.3V output. It can supply up to 3A with a 9.9W power rating, which fits low-voltage control boards and logic circuits that need regulated 3.3V within that load range.

Is the SKA15A-033 suitable for embedded processors, microcontrollers, or communication modules that run on 3.3V?

It is a practical fit for embedded electronics that require a stable 3.3V rail rather than a higher output voltage. The 3A maximum output current and 9.9W rating make it more appropriate for low-power embedded assemblies than for heavier peripheral loads.

Can this 3.3V converter be used for sensor and interface boards in automation equipment?

Yes, it can support automation subassemblies that need constant 3.3V power from a 9-18VDC source. The 3A output current is useful for grouped sensor, interface, or controller boards as long as the total load stays within 9.9W.

Is the SKA15A-033 a good choice for compact electronics where board space matters?

This model is relatively compact at 50.8 × 25.4 × 11.27 mm and weighs 0.032 kg. Those dimensions make it easier to place in space-limited control or embedded assemblies that need 3.3V output.

Can the SKA15A-033 be used in outdoor or harsh-temperature equipment?

The operating temperature range is -40°C to +71°C, so it covers a wide temperature span for industrial equipment. However, no IP rating is listed, so it is better suited to protected indoor enclosures or sheltered housings rather than directly exposed outdoor locations.

How does the SKA15A-033 compare with other SKA15A models?

Within the SKA15A series, all four models share a 9.9W rating and a 9-18VDC input range. The differences are the outputs: SKA15A-033 is 3.3V at 3A, SKA15A-05 is 5V at 3A, SKA15A-12 is 12V at 1.25A, and SKA15A-15 is 15V at 1A.

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Mean Well SKA15A-033 DC-DC Converter - 9.9W - 9~18V in 3.3V out 3A
Mean Well

Mean Well SKA15A-033 DC-DC Converter - 9.9W - 9~18V in 3.3V out 3A

$22.90 USD

SKA15A-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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