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Pico Electronics
Series IR & SIR

Series IR & SIR

Product catalog summary

Product Overview
The IR & SIR series are isolated DC-DC converters designed for a wide input range and precise regulation. These modules offer trim and control capabilities, available in both single and dual isolated output models, delivering up to 10W of power across a temperature range of -25°C to +70°C without requiring derating, heat sinks, or active cooling.

Features

10W output at +70°C ambient
Low profile with a height of 0.500 inches
Input voltage range up to 3.33:1
Output models ranging from 2V to 100V
Six-sided shielded case for Series SIR
Control and trimmable output features
Input/output isolation
No external components required
Optional expanded operating temperature range: -55°C to +85°C
Optional MIL-STD-883 screening

Specifications
The document details specifications for various models within the IR and SIR series, including output voltage, current, power, efficiency, input current, line regulation, load regulation, and output ripple. Specifications are categorized by mounting type (through-hole or surface mount) and output type (single or dual).

Model List Highlights

Single Output Through Hole: Models like IRE2S, IRE3.3S, and IRE5S offer outputs ranging from 2V to 100V with varying efficiencies and power outputs.
Dual Output Through Hole: Models such as IRE5D and IRE9D provide dual outputs with specific power and efficiency ratings.
Single Output Surface Mount: Models like SIRE3.3S and SIRE5S are designed for surface mounting with outputs from 3.3V to 100V.
Dual Output Surface Mount: Models such as SIRE5D and SIRE9D offer dual outputs with detailed efficiency and regulation specifications.

Notes

Efficiency and regulation are tested at nominal input voltage and full output load.
Line and load regulation specifications are provided for various load conditions.

Overview
The document provides detailed specifications and features of the Pico Electronics Series IR & SIR low profile DC-DC converters, designed for surface mount applications. It includes input and output parameters, environmental conditions, general specifications, protection features, and available options.

Specifications

Input Voltage Range: Varies by model, with ranges from 5-15 VDC to 36-60 VDC.
Output Voltage Tolerance: Varies by series and model, with tolerances ranging from ±0.5% to ±3%.
Operating Temperature: -25°C to +70°C without derating.
Storage Temperature: -55°C to +105°C.
Isolation Voltage: 500 VDC between input and output.
Switching Frequency: 40 kHz.

Environmental and General Specifications

Cooling: Free air convection.
Size and Weight: Varies by series, with Series IR being larger and heavier than Series SIR.
Case Material: Series IR uses epoxy insulated metal, while Series SIR uses glass reinforced polymer.

Protection and Features

Short Circuit Protection: Temporary shutdown with self-recovery.
Output Voltage Trim: Allows trimming up to 5%.

Options and Standards

Designed to meet various MIL-STD-202 standards for vibration, shock, humidity, and altitude.
Additional options include stabilization bake, temperature cycling, and burn-in testing.

Mechanical Drawings
Detailed mechanical drawings for both Series IR and SIR, including dimensions and recommended land patterns.

Packaging
Information on tube and box packaging for Series SIR and IR, respectively.

Warranty
One-year warranty against defects in material and workmanship, with limitations on liability and usage conditions.

Catalog excerpts

PRODUCT OVERVIEW The IR & SIR series are isolated DC-DC converter with wide input range and tight regulation specifications. These modules have trim and control features. Single and dual isolated output models are standard. They can operate up to 10W over the temperature range of -25°C to +70°C without derating, a heat sink or active cooling. FEATURES • Up to 10W output at +70°C ambient • Up to 3.33:1 input voltage range • Six-sided shielded case (Series SIR) • Control feature • Trimmable output • Input/output isolation • Single and dual isolated output • No external components required • No heat sink or derating required Contact Pico for part number of available options: • Expanded operating temp: -55°C to +85°C Stabilization Bake Temperature Cycle Burn-In • Special Input Voltage, Output Voltage, Isolation Voltage or Output Power MOUNTING TYPE INPUT VOLTAGE RANGE IR = THROUGH HOLE SIR = SURFACE MOUNT

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PICO MODEL LIST - SERIES IR - THROUGH HOLE SINGLE OUTPUT Note 1: Tested at nominal input voltage and full output load. Note 2: Line regulation is specified at full output load, nominal to minimum input voltage (-%) and nominal to maximum input voltage (+%). Note 3: Load regulation is specified at nominal input voltage, 60% to 25% load (+%) and 60% to 100% load (-%).

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PICO MODEL LIST - SERIES IR - THROUGH HOLE Note 1: Tested at nominal input voltage and full output load. Note 2: Line regulation is specified at full output load, nominal to minimum input voltage (-%) and nominal to maximum input voltage (+%). Note 3: Load regulation is specified at nominal input voltage, 60% to 25% load (+%) and 60% to 100% load (-%).

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PICO MODEL LIST - SERIES IR - THROUGH HOLE DUAL OUTPUT Note 1: Tested at nominal input voltage and full output load. Note 2: Line regulation is specified at full output load, nominal to minimum input voltage (-%) and nominal to maximum input voltage (+%). Note 3: Load regulation is specified at nominal input voltage, 60% to 25% load (+%) and 60% to 100% load (-%).

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PICO MODEL LIST - SERIES SIR - SURFACE MOUNT SINGLE OUTPUT Note 1: Tested at nominal input voltage and full output load. Note 2: Line regulation is specified at full output load, nominal to minimum input voltage (-%) and nominal to maximum input voltage (+%). Note 3: Load regulation is specified at nominal input voltage, 60% to 25% load (+%) and 60% to 100% load (-%).

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PICO MODEL LIST - SERIES SIR - SURFACE MOUNT DUAL OUTPUT Note 1: Tested at nominal input voltage and full output load. Note 2: Line regulation is specified at full output load, nominal to minimum input voltage (-%) and nominal to maximum input voltage (+%). Note 3: Load regulation is specified at nominal input voltage, 60% to 25% load (+%) and 60% to 100% load (-%).

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PICO SI ECIFICATIONS (Nominal V|N, Full Load, TA = +25°C, 1 hour warm up unless otherwise specified)

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PICO SPECIFICATIONS (Nominal V|N, Full Load, TA = +25°C, 1 hour warm up unless otherwise specified)

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TYPICAL CONNECTION CIRCUIT SINGLE OUTPUT +IN DUAL OUTPUT Note: Use 50kΩ,1/4W trim pot between TRIM and -IN. Reduce resistance to raise output voltage to 5% maximum. Raising the output voltage beyond 5% could cause damage to the module. 2026 REV 2

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MECHANICAL DRAWINGS SERIES IR - THROUGH HOLE SINGLE OUTPUT 2.200 [55.880] BOTTOM VIEW DUAL OUTPUT 2.200 [55.880]

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PICO MECHANICAL DRAWINGS SERIES SIR - SUFRACE MOUNT LEAD DETAILS NOTES a. ALL DIMENSIONS ARE IN INCHES, [ ] = MM

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TUBE PACKAGING - SERIES SIR 20.000 [508.000] ELEVATION VIEW PLAN VIEW TUBE PACKAGE TUBE PLUG TUBE PLUG POWER SUPPLY BOX PACKAGING - BULK - SERIES IR 1.5 CARDBOARD CARRIER POWER SUPPLY CARDBOARD CARRIER POWER SUPPLY Pico warrants each product manufactured by us and sold by us or an authorized representative, to be free from defects in material and workmanship. If properly used, it will perform within its applicable specifications for a period of one year after original shipment. Pico’s obligation under this guarantee is limited to repairing or replacing our product to the original purchaser. This...

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