• Surface Insulation Resistance (SIR) tester for evaluating printed circuit board reliability
  • Recognized as the world’s best-selling SIR tester, trusted for reliability and precision
  • Available in 64, 128, or 256 channel configurations
  • Wide measurement range of 10⁶ Ω to 10¹⁴ Ω
  • All 256 channels measured in under 30 seconds, optimized at <100ms per channel
  • Multi-bias capability applies up to three different bias voltages simultaneously in a single test
  • Internal bias voltage from 0V up to ±100V; external bias expandable to 1V–1250V
  • Fully selectable test intervals from a minimum of 1 minute, with unlimited maximum test duration
  • Continuous measurement on all selected channels, with fully shielded measuring cables
  • Detects moisture ingress, contamination, and Conductive Anodic Filament (CAF) failures
  • Provides objective evidence for IPC-J-STD-001 compliance and tests to IPC, IEC, and JNC specifications
  • Supports parallel PCB testing for increased throughput and real-time trend analysis
  • Compatible with Windows 10 and above (64-bit)
  • Compatible coupons: IPC B24, B25, B25A, B52, B53
  • Includes IEC mains lead, USB mains, humidity probe, bias lead, 2x bias power supply plugs, 1-amp fuse, and manual flash drive

Technical Specifications

Specification Value
Channels 64, 128, or 256
Measurement Range 10⁶ Ω to 10¹⁴ Ω
Internal Bias Voltage 0V, 3.3V, 5V, 10V, 12.5V, 15V, ±50V, ±100V
External Bias Voltage 1V–100V (free selection); 1V–1250V (external)
Measurement Speed <100ms per channel
All-Channel (256) Measurement Time <30 seconds
Test Intervals Selectable from 1 minute minimum
Maximum Test Duration Unlimited
Measurement Method Continuous on all selected channels
Weight 17 kg (37.5 lbs)
Dimensions 52 x 34 x 17 cm
Power Requirement 120V/230V, 50/60Hz, switchable single phase
Operating System Windows 10 onwards (64-bit)
Measuring Cable Fully shielded
Data Collected Sampling time, elapsed time, resistance, current, applied voltage, temperature, humidity
Compatible Coupons IPC B24, B25, B25A, B52, B53
Applicable Standards IPC, IEC, JNC
Compliance IPC-J-STD-001 objective evidence

AutoSIR2+™

In Stock

The AutoSIR2+ is a Surface Insulation Resistance (SIR) tester designed to evaluate printed circuit board reliability by measuring electrical resistance between conductive paths. Recognized as the world’s best-selling SIR tester, it supports 64, 128, or 256 channels, measuring a resistance range of 10⁶ to 10¹⁴ Ω with all 256 channels tested in under 30 seconds. With multi-bias testing, real-time monitoring, and support for IPC-J-STD-001 compliance, the AutoSIR2+ SIR tester helps detect moisture ingress, contamination, and CAF-related failures early in the PCB reliability process.

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