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Mean Well

Mean Well SKA20A-05 DC-DC Converter - 20W - 9~18V in 5V out 4A

SKU SKA20A-05
$30.14 USD
Shipping calculated at checkout.
In stock
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Overview

SKA20A-05 is the 5V output model of this series: rated power 20W, typical efficiency 87.5%.

Features

  • 2"×1" compact size
  • 2:1 wide input range
  • High efficiency up to 89.5%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in trimming output
  • Built-in EMI filter
  • Protections: Short circuit / Overload / Input and Output Over voltage
  • Cooling by free air convection
  • Six-sided shielded metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty

Specifications

SKA20A-05Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC VOLTAGE
5V
CURRENT RANGE
400 ~ 4000mA
RATED POWER
20W
RIPPLE & NOISE (max.)Note.2
50mVp-p
LINE REGULATIONNote.3
±0.2%
LOAD REGULATIONNote.4
±0.5%
VOLTAGE ACCURACY
±2.0%
SWITCHING FREQUENCY
300KHz typ.
EXTERNAL CAPACITANCE LOAD (max.)
1000uF
EXTERNAL TRIM Adj. RANGE(Typ.)
±10%

INPUT

VOLTAGE RANGE
9 ~ 18VDC
EFFICIENCY (Typ.)
87.5%
DC CURRENT Full load
1910mA
DC CURRENT No load
80mA
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 (Note. 5)

PROTECTION
Fuse recommended
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
>20 ~ 23VDC

ENVIRONMENT

WORKING TEMP.
-40 ~ +85℃ (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, 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. 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

SKA20A-05 Mechanical Specification
Mechanical Specification
SKA20A-05 Packing
Packing

Downloads

FAQ

Can I use the SKA20A-05 to power 5V embedded controllers or single-board electronics from a 9-18VDC source?

Yes, if the input source is within 9-18VDC and the electronics require 5V constant voltage. The output rating is 20W with up to 4A available, which suits higher-current 5V embedded loads within that limit.

Is this converter suitable for 5V industrial sensors, I/O, or communication modules?

It can be a fit for 5V constant-voltage industrial electronics when the total load stays at or below 4A. With 20W available, it supports more 5V current headroom than lower-power compact converters.

Would the SKA20A-05 work for a compact 5V automation subsystem inside a control panel?

Yes, provided the subsystem runs on 5V constant voltage and remains within the 20W output budget. The body size is 50.8 × 25.4 × 11.2 mm, so it is suited to compact panel or embedded spaces.

Can I use this model for 5V IT or networking support electronics that need more than 1A?

This model is better suited to higher-current 5V support electronics because it provides up to 4A at 5V. The main check is keeping the total output demand within 20W and using a source in the 9-18VDC input range.

Is the SKA20A-05 meant for outdoor use or wide-temperature environments?

The specified operating range is -40°C to +85°C, which supports a broader temperature span than many indoor-only electronics. However, no IP rating is listed in the provided specs, so the product page does not identify it as weatherproof or outdoor-rated.

Payment & Security

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Mean Well SKA20A-05 DC-DC Converter - 20W - 9~18V in 5V out 4A
Mean Well

Mean Well SKA20A-05 DC-DC Converter - 20W - 9~18V in 5V out 4A

$30.14 USD

SKA20A-05 is the 5V output model of this series: rated power 20W, typical efficiency 87.5%.

Features

  • 2"×1" compact size
  • 2:1 wide input range
  • High efficiency up to 89.5%
  • 1500VDC I/O isolation
  • Built-in remote ON/OFF control
  • Built-in trimming output
  • Built-in EMI filter
  • Protections: Short circuit / Overload / Input and Output Over voltage
  • Cooling by free air convection
  • Six-sided shielded metal case
  • 100% burn-in test
  • Low cost / High reliability
  • Approvals: FCC / EAC / CE / UKCA
  • 2 years warranty
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