Name: MEAN WELL IOB-05 series: Industrial AC-DC power module - IOB-05-24
Brand: MEAN WELL
SKU: IOB-05-24
Price: 15.77 USD
Availability: InStock

MEAN WELL IOB-05 series: Industrial AC-DC power module - IOB-05-24

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Description

IOB-05-24 — Industrial AC-DC power module

MEAN WELL IOB-05-24 is an open-frame PCB power module with 24 V DC output at 0.21 A and a catalog rating of 5.04 W. It accepts 85–305 V AC or 100–430 V DC and uses natural convection. The specified minimum output load and external circuit components must be observed.

Download MEAN WELL IOB-05 Datasheet (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

IOB-05 series: datasheet PDF pages 1–8, specification edition 2025-09-12.

Model and output

Model and construction	IOB-05-24; industrial open-frame AC-DC power module for assembly on the system main PCB. Compact 1 × 0.6 inch series format.
DC output voltage	24 V DC
Rated output current	0.21 A
Output current range	0.021–0.21 A; observe the input-voltage, temperature and external-component requirements.
Rated output power	5.04 W
Ripple and noise	150 mV maximum; measured with 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel.
Initial set-point accuracy	±5% at 10–100% load
Line regulation	±1.5%
Load regulation	±3%
Capacitive load	100 µF maximum; this load limit is separate from the required circuit capacitors below.

Input and efficiency

Input voltage	85–305 V AC, including 277 V AC; 100–430 V DC.
AC input frequency	47–63 Hz
Efficiency	81% typical
AC input current	0.2 A at 115 V AC / 0.1 A at 230 V AC, typical.
Inrush current	20 A at 115 V AC / 40 A at 230 V AC, typical.
No-load power consumption	<0.15 W
Measurement conditions	Unless stated otherwise, specifications are measured at 230 V AC input, rated load and 25°C ambient. Setup time is assessed at the first cold start; repeated power switching may increase it.

Protection and insulation

Short-circuit protection	Continuous short-circuit protection with hiccup operation and automatic recovery.
Overload protection	Above 110% of rated output power; hiccup mode with automatic recovery after the fault is removed.
Overvoltage protection	Output-voltage clamp; 30 V DC maximum.
Safety classification and standard	Safety Class II. LVD IEC 62368-1 approved; the finished equipment must meet its applicable safety requirements.
Dielectric withstand	Input to output: 3 kV AC, with leakage current <5 mA during the withstand test.
Insulation resistance	Input to output: 1000 MΩ at 500 V DC, 25°C and 70% RH.

Temperature and operating limits

Cooling and working temperature	Natural free-air convection; −40 to +85°C, subject to the applicable derating curve. Starting at −40°C requires a solid output capacitor to meet the derating requirements.
Temperature derating	The curve shows 100% load from −40 to +55°C, 80% at +60°C and 50% at +85°C. Use the required components for the selected input and temperature range.
Input-voltage derating	The AC curve shows 80% load at 85 V AC, 100% from 100 to 277 V AC and 80% at 305 V AC.
Humidity and storage	Working: 20–90% RH, non-condensing. Storage: −40 to +105°C and 10–95% RH, non-condensing.
Temperature coefficient	±0.15%/°C maximum over 0–85°C.
Vibration	10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes each along X, Y and Z.

Required external circuit components

Primary capacitor C1	Required: 22 µF/450 V for −40 to +85°C at 85–305 V AC. The 10 µF/450 V alternative covers −25 to +85°C at 85–305 V AC, or −40 to +85°C at 165–305 V AC. Recommended ripple-current capability is >200 mA at 100 kHz. Connect C1 across +V(cap) and −V(cap).
Output filter C2, L1 and C3	Required C2: 220 µF/35 V capacitor. Required L1: 4.7 µH, 60 mΩ maximum / 2.2 A. Required C3: 47 µF/35 V. Follow the circuit on PDF page 3, including the inductor between the output capacitors.
C4, CY1 and TVS	C4: 0.1 µF/50 V ceramic. CY1: 1 nF/400 V AC, required. Recommended TVS for this output: SMBJ30A; the catalog recommends a TVS rated at least 1.2 times the output voltage to protect downstream equipment from converter failure.
Output-capacitor selection	Use the specified output capacitors; for −40°C operation, use a polymer capacitor with at least 20% voltage-rating margin as recommended. Required external components are system-design parts; their listing does not imply that they are included with the module.

EMC reference circuits

General AC reference circuit	85–305 V AC, −40 to +85°C; emissions Class A / immunity Class III reference. Required wirewound R1: 12 Ω/3 W. LDM: 4.7 mH, 15 Ω maximum / 0.2 A minimum. Fuse: 1 A/300 V slow-blow. Use the required basic circuit components above.
Indoor general AC reference circuit	85–305 V AC, −25 to +55°C; emissions Class B / immunity Class III reference. R1: 12 Ω/3 W wirewound; LDM: 1.2 mH, 4 Ω / 0.2 A; CX: 0.1 µF/310 V AC; fuse: 1 A/300 V slow-blow.
Indoor industrial AC reference circuit	85–305 V AC, −25 to +55°C; emissions Class B / immunity Class IV reference. MOV: S14K350; CX: 0.1 µF/310 V AC; LDM: 1.2 mH, 4 Ω / 0.2 A; required R1: 12 Ω/3 W wirewound; fuse: 2 A/300 V slow-blow.
Outdoor general AC reference circuit	85–305 V AC, −40 to +85°C; emissions Class A / immunity Class IV reference. MOV: S14K350; LDM: 4.7 mH, 15 Ω / 0.2 A; fuse: 2 A/300 V slow-blow. This circuit specifically lists required wirewound R1 as 12 Ω/0.2 W; confirm the resistor rating for this circuit with MEAN WELL before implementation.
Reference-circuit selection	Use the complete selected circuit on PDF pages 4–6. R1 must be wirewound; chip and carbon-film resistors are not acceptable substitutes. For household designs, the indoor general circuit calls for two 2.2 nF/250 V AC Y capacitors in series. The X-capacitor guidance calls for a parallel bleeder resistance no greater than 3.8 MΩ where required by the applicable safety standard. An outdoor application circuit does not provide a protective enclosure or an IP rating.

EMC performance and system verification

Conducted and radiated emissions	BS EN/EN 55032 (CISPR 32): Class A without additional EMC components; Class B with the prescribed EMC components. The basic required circuit components are still needed. Select a complete reference circuit appropriate to the application and verify the finished equipment.
ESD and radiated immunity	BS EN/EN 61000-4-2: Level 3, ±6 kV contact. BS EN/EN 61000-4-3: Level 3.
EFT and surge immunity	BS EN/EN 61000-4-4: Level 2, ±2 kV. BS EN/EN 61000-4-5: Level 2, ±1 kV line-to-line.
Conducted immunity and voltage dips	BS EN/EN 61000-4-6: Level 3, 10 V (e.m.f.). BS EN/EN 61000-4-11: 0% and 70% voltage-dip/interruption tests, performance criterion B.

Mechanical details and reliability

Dimensions	26.4 × 14.73 × 11 mm (L × W × H); the mechanical drawing marks the 11 mm height as maximum and shows a separate 17.6 mm span including the connection tabs. General drawing tolerance: ±1 mm.
Pin assignment	1 = AC/L; 2 = AC/N; 3 = +V(cap); 4 = −V(cap); 5 = −Vout; 6 = +Vout. The V(cap) pins connect the primary bulk capacitor; use the separate Vout pins for the load.
PCB footprint	Use the front-view non-plated-slot footprint on PDF page 7. The drawing uses a 2.54 × 2.54 mm reference grid, not a uniform pin pitch; successive pin spacings are 4, 4, 4, 8 and 4 mm. Tab width is 1.4 mm.
Weight and packing reference	5.45 g, catalog packing reference per unit; not a measured net weight. Catalog packing: 150 pieces per tray and 1500 pieces in 10 trays per carton. Packing quantities describe the manufacturer arrangement, not the quantity supplied by this listing.
MTBF	>10,000 K hours typical, MIL-HDBK-217F at 25°C; this reliability estimate is not a service-life or warranty duration.
Applications and warranty	For industrial electrical and mechanical equipment, factory automation, hand-held electronic devices, smart homes, industrial control and related compact embedded systems. The manufacturer catalog states a 3-year warranty; applicable manufacturer terms govern.

Component EMI testing guidance

EMC system verification	This converter is a component power supply. Reconfirm EMC in the finished equipment with the converter installed and connected to its load; application, wiring and assembly affect the result.
EMI test guidance	The linked guidance describes representative tests on a metal plate with twisted output wires laid flat within the plate area. Select a test arrangement that represents the intended application.