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High-Reliability Green PCB-Mount Industrial Power Module – IRM Series
DAPPRA PCB-Mount AC-DC Power Module
IRM Series — Miniature
Encapsulated PCB-Mount Power Module
The DAPPRA IRM Series is a miniature encapsulated module-type AC-DC power supply designed to be soldered directly onto the PCB boards of electronic instruments and industrial automation equipment.
Covering 1W to 90W with 3.3V to 48V output, the IRM Series combines universal 85–305 VAC input, Class II isolation, built-in EMI filtering and BS EN/EN55032 Class B compliance — all in a compact encapsulated package that meets anti-vibration requirements up to 5G.
1–90 W
Output Power
85–305 VAC
Universal AC Input
Class II
Isolation (No FG Pin)
< 0.3 W
No-Load Consumption
Overview
IRM Series Overview
The DAPPRA IRM Series is a miniature encapsulated AC-DC module-type power supply series ready to be soldered onto the PCB boards of various kinds of electronic instruments or industrial automation equipment. It covers eleven power ratings — 1W, 2W, 3W, 5W, 10W, 15W, 20W, 30W, 45W, 60W and 90W — with single-output configurations of 3.3V, 5V, 9V, 12V, 15V, 24V and 48V DC.
All models feature a universal AC input range of 85–305 VAC, a flame-retardant plastic case potted with silicone, and Class II isolation design (no FG pin) with built-in EMI filtering that complies with BS EN/EN55032 Class B without additional components. No-load power consumption is extremely low, from below 0.075W on the smallest models to below 0.3W on the 90W model.
Key Features
IRM Series Key Features
Engineered for compact, reliable and energy-efficient PCB-mount power conversion.
- Universal AC Input 85–305 VACFull-range AC input supports global mains voltages. Also supports 120–430 VDC input. IRM-90 supports 80–305 VAC input.
- Miniature Encapsulated PackageFlame-retardant plastic case potted with silicone enhances heat dissipation and provides fundamental resistance to dust and moisture. Anti-vibration up to 5G (ST models) or 2G (PCB models).
- Class II Isolation (No FG Pin)Entire series is Class II design without an FG pin, incorporating built-in EMI filtering components for BS EN/EN55032 Class B compliance without additional components.
- Extremely Low No-Load ConsumptionBelow 0.075W on IRM-01/02/03, below 0.1W on IRM-05/10/15/20/30, below 0.15W on IRM-45/60, and below 0.3W on IRM-90 — fulfilling worldwide low-power regulations.
- Complete Protection FunctionsShort circuit protection, overload protection (hiccup mode, auto-recovery), and over voltage protection (clamping by zener diode on most models). IRM-90 includes over temperature protection.
- Wide Operating Temperature Range-30°C to +85°C for most models, extended to -40°C to +85°C on IRM-90. Free air convection cooling with no moving parts.
- Multiple Model OptionsSMD style models (S suffix) available on IRM-02 and IRM-03. Screw terminal style models (ST suffix) available on IRM-30, IRM-45, IRM-60 and IRM-90. Other models are PCB mounting style.
- Safety & ComplianceCertified to IEC62368-1, IEC61558-1/-2-16, UL62368-1, TUV BS EN/EN62368-1, BS EN/EN61558-1/-2-16, EAC TP TC 004 and BSMI CNS15598-1. 3 years warranty.
Model Selection
IRM Series Model Selection
Select the appropriate IRM model according to the required output power, output voltage and model style.
The IRM Series is available in eleven power ratings from 1W to 90W. Output voltages range from 3.3V to 48V depending on the model. Standard models are PCB mounting style; SMD style models (S suffix) are available on IRM-02 and IRM-03; screw terminal style models (ST suffix) are available on IRM-30, IRM-45, IRM-60 and IRM-90.
Model Code
IRM
–
20
–
12
IRMSeries prefix — DAPPRA IRM Series Miniature Encapsulated AC-DC Power Module.
20 — Output WattageOutput power rating in Watts: 01 / 02 / 03 / 05 / 10 / 15 / 20 / 30 / 45 / 60 / 90.
12 — Output VoltageNominal output voltage in VDC: 3.3 / 5 / 9 / 12 / 15 / 24 / 48 (varies by model).
S / ST — Model Suffix (Optional)S = SMD style model (IRM-02/03 only). ST = Screw terminal style model (IRM-30/45/60/90). No suffix = standard PCB mounting model.
Field
Meaning
Available Values
IRM
Series prefix
IRM
Output Wattage
Rated output power in Watts
01 / 02 / 03 / 05 / 10 / 15 / 20 / 30 / 45 / 60 / 90
Output Voltage
Nominal DC output voltage
3.3 / 5 / 9 / 12 / 15 / 24 / 48 VDC
Model Suffix
Package / terminal style
S (SMD) / ST (Screw Terminal) / Blank (PCB)
Example: IRM-20-12 = IRM Series, 20W output power, 12V DC output, PCB mounting style.
IRM-01 / 02 / 03 — 1W / 2W / 3W
| Model | Output Voltage | Output Current | Rated Power | Efficiency | Dimensions (L×W×H) |
|---|---|---|---|---|---|
| IRM-01-3.3 | 3.3 VDC | 300 mA | 1 W | 66% | 33.7 × 22.2 × 15 mm |
| IRM-01-5 | 5 VDC | 200 mA | 1 W | 70% | 33.7 × 22.2 × 15 mm |
| IRM-01-9 | 9 VDC | 111 mA | 1 W | 72% | 33.7 × 22.2 × 15 mm |
| IRM-01-12 | 12 VDC | 83 mA | 1 W | 74% | 33.7 × 22.2 × 15 mm |
| IRM-01-15 | 15 VDC | 67 mA | 1 W | 75% | 33.7 × 22.2 × 15 mm |
| IRM-01-24 | 24 VDC | 42 mA | 1 W | 77% | 33.7 × 22.2 × 15 mm |
| IRM-02-3.3 | 3.3 VDC | 600 mA | 2 W | 66% | 33.7 × 22.2 × 15 mm |
| IRM-02-5 | 5 VDC | 400 mA | 2 W | 70% | 33.7 × 22.2 × 15 mm |
| IRM-02-9 | 9 VDC | 222 mA | 2 W | 72% | 33.7 × 22.2 × 15 mm |
| IRM-02-12 | 12 VDC | 167 mA | 2 W | 74% | 33.7 × 22.2 × 15 mm |
| IRM-02-15 | 15 VDC | 133 mA | 2 W | 75% | 33.7 × 22.2 × 15 mm |
| IRM-02-24 | 24 VDC | 83 mA | 2 W | 77% | 33.7 × 22.2 × 15 mm |
| IRM-03-3.3 | 3.3 VDC | 900 mA | 3 W | 68% | 37 × 24 × 15 mm |
| IRM-03-5 | 5 VDC | 600 mA | 3 W | 72% | 37 × 24 × 15 mm |
| IRM-03-9 | 9 VDC | 333 mA | 3 W | 77% | 37 × 24 × 15 mm |
| IRM-03-12 | 12 VDC | 250 mA | 3 W | 78% | 37 × 24 × 15 mm |
| IRM-03-15 | 15 VDC | 200 mA | 3 W | 78% | 37 × 24 × 15 mm |
| IRM-03-24 | 24 VDC | 125 mA | 3 W | 80% | 37 × 24 × 15 mm |
IRM-02 and IRM-03 also offer SMD style models (S suffix) with an added height of 1 mm. Example: IRM-02-5S, IRM-03-12S.
IRM-05 / 10 / 15 / 20 — 5W / 10W / 15W / 20W
| Model | Output Voltage | Output Current | Rated Power | Efficiency | Dimensions (L×W×H) |
|---|---|---|---|---|---|
| IRM-05-3.3 | 3.3 VDC | 1.25 A | 4.125 W | 68% | 45.7 × 25.4 × 21.5 mm |
| IRM-05-5 | 5 VDC | 1 A | 5 W | 71% | 45.7 × 25.4 × 21.5 mm |
| IRM-05-12 | 12 VDC | 0.42 A | 5.04 W | 75% | 45.7 × 25.4 × 21.5 mm |
| IRM-05-15 | 15 VDC | 0.33 A | 4.95 W | 75% | 45.7 × 25.4 × 21.5 mm |
| IRM-05-24 | 24 VDC | 0.23 A | 5.52 W | 77% | 45.7 × 25.4 × 21.5 mm |
| IRM-10-3.3 | 3.3 VDC | 2.5 A | 8.25 W | 74% | 45.7 × 25.4 × 21.5 mm |
| IRM-10-5 | 5 VDC | 2 A | 10 W | 77% | 45.7 × 25.4 × 21.5 mm |
| IRM-10-12 | 12 VDC | 0.85 A | 10.2 W | 82% | 45.7 × 25.4 × 21.5 mm |
| IRM-10-15 | 15 VDC | 0.67 A | 10.05 W | 82% | 45.7 × 25.4 × 21.5 mm |
| IRM-10-24 | 24 VDC | 0.42 A | 10.08 W | 82% | 45.7 × 25.4 × 21.5 mm |
| IRM-15-3.3 | 3.3 VDC | 3.5 A | 11.55 W | 74% | 52.4 × 27.2 × 24 mm |
| IRM-15-5 | 5 VDC | 3 A | 15 W | 78% | 52.4 × 27.2 × 24 mm |
| IRM-15-12 | 12 VDC | 1.25 A | 15 W | 82% | 52.4 × 27.2 × 24 mm |
| IRM-15-15 | 15 VDC | 1 A | 15 W | 82% | 52.4 × 27.2 × 24 mm |
| IRM-15-24 | 24 VDC | 0.63 A | 15.12 W | 83% | 52.4 × 27.2 × 24 mm |
| IRM-20-3.3 | 3.3 VDC | 4.5 A | 14.85 W | 76% | 52.4 × 27.2 × 24 mm |
| IRM-20-5 | 5 VDC | 4 A | 20 W | 79% | 52.4 × 27.2 × 24 mm |
| IRM-20-12 | 12 VDC | 1.8 A | 21.6 W | 84% | 52.4 × 27.2 × 24 mm |
| IRM-20-15 | 15 VDC | 1.4 A | 21 W | 84% | 52.4 × 27.2 × 24 mm |
| IRM-20-24 | 24 VDC | 0.9 A | 21.6 W | 85% | 52.4 × 27.2 × 24 mm |
IRM-30 / 45 / 60 / 90 — 30W / 45W / 60W / 90W
| Model | Output Voltage | Output Current | Rated Power | Efficiency | Dimensions (L×W×H) |
|---|---|---|---|---|---|
| IRM-30-5 | 5 VDC | 6 A | 30 W | 83% | 69.5 × 39 × 24 mm |
| IRM-30-12 | 12 VDC | 2.5 A | 30 W | 88% | 69.5 × 39 × 24 mm |
| IRM-30-15 | 15 VDC | 2 A | 30 W | 88% | 69.5 × 39 × 24 mm |
| IRM-30-24 | 24 VDC | 1.3 A | 31.2 W | 88.5% | 69.5 × 39 × 24 mm |
| IRM-30-48 | 48 VDC | 0.63 A | 30.2 W | 90% | 69.5 × 39 × 24 mm |
| IRM-45-5 | 5 VDC | 8 A | 40 W | 83.5% | 87 × 52 × 29.5 mm |
| IRM-45-12 | 12 VDC | 3.8 A | 45.6 W | 87.5% | 87 × 52 × 29.5 mm |
| IRM-45-15 | 15 VDC | 3 A | 45 W | 88.5% | 87 × 52 × 29.5 mm |
| IRM-45-24 | 24 VDC | 1.9 A | 45.6 W | 89.5% | 87 × 52 × 29.5 mm |
| IRM-45-48 | 48 VDC | 0.94 A | 45.12 W | 90.5% | 87 × 52 × 29.5 mm |
| IRM-60-5 | 5 VDC | 10 A | 50 W | 84% | 87 × 52 × 29.5 mm |
| IRM-60-12 | 12 VDC | 5 A | 60 W | 87.5% | 87 × 52 × 29.5 mm |
| IRM-60-15 | 15 VDC | 4 A | 60 W | 89% | 87 × 52 × 29.5 mm |
| IRM-60-24 | 24 VDC | 2.5 A | 60 W | 90% | 87 × 52 × 29.5 mm |
| IRM-60-48 | 48 VDC | 1.25 A | 60 W | 91% | 87 × 52 × 29.5 mm |
| IRM-90-12 | 12 VDC | 6.7 A / 7.37 A peak | 88.4 W peak | 92% | 87 × 52 × 29.5 mm |
| IRM-90-15 | 15 VDC | 5.67 A / 6.23 A peak | 93.5 W peak | 92.5% | 87 × 52 × 29.5 mm |
| IRM-90-24 | 24 VDC | 3.75 A / 4.13 A peak | 99 W peak | 93% | 87 × 52 × 29.5 mm |
| IRM-90-48 | 48 VDC | 1.88 A / 2.07 A peak | 99.2 W peak | 93% | 87 × 52 × 29.5 mm |
IRM-30, IRM-45, IRM-60 and IRM-90 also offer screw terminal style models (ST suffix). Example: IRM-30-24ST, IRM-45-12ST, IRM-60-24ST, IRM-90-12ST.
Dimensions
IRM Series Dimensions
Compact encapsulated packages designed for PCB mounting with minimal footprint. ST models have separate dimensions. All dimensions in mm.
IRM-01 / IRM-02
| Length (L) | 33.7 mm |
| Width (W) | 22.2 mm |
| Height (H) | 15 mm |
| Case | Black phenolic |
IRM-02S / IRM-03S (SMD)
| Length (L) | 33.7 / 37 mm |
| Width (W) | 22.2 / 24 mm |
| Height (H) | 16 mm |
| Case | Black phenolic |
IRM-03
| Length (L) | 37 mm |
| Width (W) | 24 mm |
| Height (H) | 15 mm |
| Case | Black phenolic |
IRM-05 / IRM-10
| Length (L) | 45.7 mm |
| Width (W) | 25.4 mm |
| Height (H) | 21.5 mm |
| Case | 94V-0 flame retardant plastic |
IRM-15 / IRM-20
| Length (L) | 52.4 mm |
| Width (W) | 27.2 mm |
| Height (H) | 24 mm |
| Case | 94V-0 flame retardant plastic |
IRM-30
| Length (L) | 69.5 mm |
| Width (W) | 39 mm |
| Height (H) | 24 mm |
| Case | 94V-0 flame retardant plastic |
IRM-30-xxST
| Length (L) | 91 mm |
| Width (W) | 39.5 mm |
| Height (H) | 28.5 mm |
| Case | 94V-0 flame retardant plastic |
IRM-45 / 60 / 90
| Length (L) | 87 mm |
| Width (W) | 52 mm |
| Height (H) | 29.5 mm |
| Case | 94V-0 flame retardant plastic |
IRM-45 / 60 / 90-xxST
| Length (L) | 109 mm |
| Width (W) | 52 mm |
| Height (H) | 33.5 mm |
| Case | 94V-0 flame retardant plastic |
Mounting & Soldering
IRM Series Mounting & Soldering
The IRM Series supports PCB soldering, SMD reflow and screw-terminal mounting depending on the model.
01 / 06
PCB Mounting Models
Standard pin-through PCB mounting. Suitable for automated wave soldering. Anti-vibration up to 2G on IRM-30/45/60/90, 5G on smaller models.
02 / 06
SMD Models (S Suffix)
Available on IRM-02 and IRM-03. Suitable for reflow soldering with peak temperature 240°C, 10s max. Not compatible with wave soldering.
03 / 06
Screw Terminal Models (ST Suffix)
Available on IRM-30 / 45 / 60 / 90. Provides screw-terminal block for input and output connections. Anti-vibration up to 5G.
04 / 06
Soldering Temperature
Wave soldering: 265°C, 5s max. Manual soldering: 390°C, 3s max. Reflow soldering (SMD style): peak 240°C, 10s max, above 220°C for 60s max.
05 / 06
Class II — No FG Pin
The entire IRM Series is Class II design without an FG pin. No grounding connection is required — simplifying PCB layout and reducing wiring.
06 / 06
Ventilation Clearance
The encapsulated package is designed for free air convection cooling. Ensure adequate space around the module for heat dissipation, especially at high ambient temperatures.
Wiring & Terminal
IRM Series Pin Assignment
Pin assignments vary by model style. Refer to the pin assignment below for each style.
PCB Mounting Style Pin Assignment
IRM-01 / IRM-02 (Bottom View)
| Pin | Assignment |
|---|---|
| AC/L | AC Line Input |
| AC/N | AC Neutral Input |
| +V | DC Output Positive |
| -V | DC Output Negative |
Pin diameter: 1.0 mm for AC/L, AC/N; 0.6 mm for +V, -V on IRM-01.
IRM-30 / 45 / 60 / 90 (PCB Style)
| Pin | Assignment |
|---|---|
| AC/L | AC Line Input |
| AC/N | AC Neutral Input |
| +V | DC Output Positive |
| -V | DC Output Negative |
Pin diameters: 1.0 mm for AC/L, AC/N; 2.0 mm for +V, -V on IRM-45/60/90.
SMD Style Pin Assignment (IRM-02S / IRM-03S)
IRM-02S SMD Pins
| Pin | Assignment |
|---|---|
| 1 | AC/L |
| 24 | AC/N |
| 13 | -V |
| 12 | +V |
| Others | N.C. |
IRM-03S SMD Pins
| Pin | Assignment |
|---|---|
| 1 | AC/L |
| 3 | AC/N |
| 14 | -V |
| 16 | +V |
| Others | N.C. |
Screw Terminal Style Pin Assignment (IRM-30 / 45 / 60 / 90 ST)
Input Terminal (AC)
| Terminal | Assignment |
|---|---|
| AC/L | AC Line Input |
| AC/N | AC Neutral Input |
Output Terminal (DC)
| Terminal | Assignment |
|---|---|
| +V | DC Output Positive |
| -V | DC Output Negative |
IRM-45/60/90 ST models provide dual +V and dual -V terminals for convenience (2× +V, 2× -V).
Mounting Notes
Ensure all pins are properly soldered or terminated. Do not exceed the rated output current or power. The IRM Series is Class II isolated (no FG pin) — no grounding connection is required. Refer to the specific model datasheet for pin diameters and recommended PCB layout.
The actual wiring should follow the pin assignment provided in the IRM Series installation manual. Use stranded copper wire only where applicable.
Safety & Compliance
IRM Series Safety & Cautions
Read and follow all safety instructions before installing, wiring, maintaining or modifying the IRM Series power module.
- Risk of electrical shock and energy hazard. All failure should be examined by a qualified technician. Do not remove the case of the power module yourself.
- Connecting both the primary and the secondary sides together is not allowed — risk of electric arcs and electric shock (danger to life).
- Risk of burn hazard. Do not touch the unit in operation and shortly after disconnection.
- Risk of fire and short circuit. The module should be protected from foreign objects or dripping liquids.
- Output current and output wattage must not exceed the rated value on its specification.
- Before commencing any installation, maintenance or modification work, disconnect the system from supply voltage. Make sure that inadvertent connection in circuit will be impossible.
- Wave soldering: 265°C, 5s max. Manual soldering: 390°C, 3s max. Reflow soldering (SMD style): peak 240°C, 10s max.
- The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.
Note: Pollution Degree 2 applies where there is only non-conductive pollution that might temporarily become conductive due to occasional condensation. Generally refers to dry, well-ventilated locations, such as control cabinets.
Applications
IRM Series Industrial Applications
The IRM Series is suitable for industrial electrical equipment, mechanical equipment, factory automation equipment and handheld electronic devices.
Industrial Electrical Equipment
Mechanical Equipment
Factory Automation
Handheld Electronic Devices
Electronic Instruments
Automation Equipment
Security Systems
Network Equipment
Telecommunication
Next Step
Explore the IRM Series
Browse all IRM Series PCB-mount AC-DC power module products, or return to the Industrial Power Supply category page.
Support
IRM Series FAQ
What is the DAPPRA IRM Series?
The DAPPRA IRM Series is a miniature encapsulated AC-DC module-type power supply designed for PCB mounting in electronic instruments and industrial automation equipment. It covers 1W to 90W with 3.3V, 5V, 9V, 12V, 15V, 24V and 48V single-output configurations.
What is the input voltage range of the IRM Series?
Most IRM models support a universal AC input of 85–305 VAC (or 120–430 VDC). The IRM-90 supports 80–305 VAC.
What output voltages are available in the IRM Series?
The IRM Series offers 3.3V, 5V, 9V, 12V, 15V, 24V and 48V output options depending on the power rating. IRM-90 is available in 12V, 15V, 24V and 48V only.
Does the IRM Series support SMD mounting?
Yes. IRM-02 and IRM-03 offer both standard PCB mounting style and SMD style (model suffix ‘S’). IRM-30, IRM-45, IRM-60 and IRM-90 also offer screw-terminal style models (ST suffix).
What is the efficiency of the IRM Series?
Efficiency ranges from 66% (IRM-01/02) up to 93% (IRM-90), depending on the model and output voltage. Higher power models generally achieve higher efficiency.
What is the no-load power consumption of the IRM Series?
No-load power consumption is below 0.075W for IRM-01/02/03, below 0.1W for IRM-05/10/15/20/30, below 0.15W for IRM-45/60, and below 0.3W for IRM-90.
What is the isolation class of the IRM Series?
The entire IRM Series is Class II design (no FG pin), incorporating built-in EMI filtering components and complying with BS EN/EN55032 Class B without any additional components.
What is the operating temperature range of the IRM Series?
The IRM Series operates from -30°C to +85°C (refer to derating curve). The IRM-90 extends this to -40°C to +85°C.
What certifications does the IRM Series have?
The IRM Series is certified to IEC62368-1, IEC61558-1/-2-16, UL62368-1, TUV BS EN/EN62368-1, BS EN/EN61558-1/-2-16, EAC TP TC 004 and BSMI CNS15598-1. Some models are also certified to BS EN/EN60335-1.
How do I choose the right IRM Series model?
Select the IRM model according to the required output power (1W to 90W), output voltage, mounting style (PCB, SMD or screw terminal) and available board space.