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Mean Well SD-15B-24 DC-DC Converter - 15W - 18~36V in 24V out 625mA

2:1 wide input range1.5~2KVAC isolation by models
SKU SD-15B-24
$16.28 USD
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Overview

SD-15B-24 is the 24V output model of this series: rated current 0.625A, rated power 15W, typical efficiency 77%.

Features

  • 2:1 wide input range
  • Protections:Short circuit/Over load /voltage
  • Built-in EMI filter, low ripple noise
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty

Specifications

SD-15B-24Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
24V
RATED CURRENT
0.625A
CURRENT RANGE
0 ~ 0.625A
RATED POWER
15W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ.RANGE
21.6~26.4VDC
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.2%
LOAD REGULATION
±0.2%
SETUP, RISE ,HOLD UP TIME
2.5s, 25ms,--- 12VDC/24VDC/48VDC at full load

INPUT

VOLTAGE RANGE
B:18 ~ 36VDC
EFFICIENCY(Typ.)
77%
DC CURRENT(Typ.)
0.9A/24VDC

PROTECTION

OVER LOAD
105 ~160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
27.6 ~ 32.4V Protection type : Shut off o/p voltage, clamping by zener diode

ENVIRONMENT

WORKING TEMP.
-10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, 60min.each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
EAC TP TC 004 approved, design refer to AS/NZS 62368.1
WITHSTAND VOLTAGE
I/P-O/P:1.5KVAC I/P-FG:1KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE
I/P-O/P,I/P-FG,O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032(CISPR32), EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
3861.2K hrs min. Telcordia SR-332 (Bellcore) ; 644.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
78*51*28mm (L*W*H)
PACKING
0.18Kg,60 PCS/11.8Kg
Test conditions and notes5
  1. 1. All parameters NOT specially mentioned are measured at normal input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

SD-15B-24 Mechanical Specification
Mechanical Specification
SD-15B-24 Block Diagram
Block Diagram

Downloads

FAQ

Can I use the SD-15B-24 for a small 24V sensor, controller, or automation accessory from an 18-36 input source?

Yes, if the load needs a regulated 24V output and stays within 0.625A. This unit is rated for 15W total and accepts an 18-36VDC input range, so it is aimed at low-power 24V industrial or embedded devices.

Is the SD-15B-24 a fit for a compact 24V control circuit inside industrial equipment?

It is suitable for small 24V constant voltage loads that do not exceed 15W. With 24V output at 0.625A, it is intended for light auxiliary electronics rather than larger 24V control hardware.

Can this model step an 18-36 source to 24V for embedded or monitoring electronics?

It can when the source falls within the 18-36VDC input range and the load requires constant 24V output. The available output is limited to 0.625A, so it fits low-power embedded, monitoring, or signaling devices.

Does the SD-15B-24 support outdoor use or wide industrial temperature conditions?

The listed operating temperature range is -10°C to +60°C, with output derating at higher temperatures per the derating curve. No IP rating appears in the specs, so the data does not state outdoor exposure resistance or sealed-enclosure suitability.

What is the difference between the SD-15B-24 and the other SD-15B variants?

In the SD-15B series, SD-15B-5 is 15W, 5V, 3A; SD-15B-12 is 15W, 12V, 1.25A; and SD-15B-24 is 15W, 24V, 0.625A. Each version uses the same 18-36VDC input range, constant voltage operation, -10°C to +60°C operating temperature (with derating), 78 × 51 × 28 mm dimensions, 0.18 kg weight, and EAC TP TC 004 approval.

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Mean Well SD-15B-24 DC-DC Converter - 15W - 18~36V in 24V out 625mA
Mean Well

Mean Well SD-15B-24 DC-DC Converter - 15W - 18~36V in 24V out 625mA

$16.28 USD

SD-15B-24 is the 24V output model of this series: rated current 0.625A, rated power 15W, typical efficiency 77%.

Features

  • 2:1 wide input range
  • Protections:Short circuit/Over load /voltage
  • Built-in EMI filter, low ripple noise
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty
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