FR4 94V-0 rigid ISA bus data acquisition circuit board is a flame-retardant rigid PCB specially engineered for industrial ISA bus data acquisition and signal sampling applications. This custom rigid PCB is built for legacy 8-bit and 16-bit ISA parallel bus systems, delivering reliable analog & digital signal capture for industrial measuring instruments and factory automation control cabinets.
Specifications
- Substrate: FR4, UL94V-0 flame retardant grade
- Board thickness: 1.6mm (standard), optional 0.8mm /1.0mm /2.0mm
- Copper weight: 1oz (35μm), optional 0.5oz~2oz
- Layer count: 2-layer /4-layer
- Min trace width/space: 0.127mm
- Min hole size: 0.3mm mechanical drill
- Surface finish: HASL, ENIG, Immersion Silver, OSP
- Solder mask: Green / Black / Blue / Red solder mask, liquid photoimageable solder resist
- Silkscreen: White ink
- Tolerance: ±0.1mm for outline
- Operating temperature: -40℃ ~ +125℃
Impedance Characteristics
- Controlled impedance available upon request: 50Ω /75Ω single-ended, 100Ω differential
- ISA bus signal lines are designed with impedance matching to reduce signal reflection and crosstalk
- Impedance tolerance: ±10% (standard), ±5% for high precision requirement
- Calculated based on FR4 dielectric constant (Dk=4.2 at 1GHz), stack-up tuning for stable impedance performance
Signal Performance Features
- Optimized routing for ISA 8/16-bit bus: control trace length matching, minimize skew on address & data lines
- Low crosstalk layout: separate analog sampling area and digital ISA bus traces, guard ground isolation
- Low dielectric loss FR4 material, maintain signal integrity for parallel bus communication
- Good noise immunity: solid ground plane suppress EMI interference for data acquisition analog input
- Stable transmission for low-to-medium speed ISA bus signals, avoid data loss during analog-to-digital conversion
Manufacturing Process Advantages
- FR4 94V-0 material meets flame retardant requirement, suitable for industrial control cabinet environment
- Mature double-sided /4-layer rigid PCB process, support custom outline, notch, mounting holes for ISA slot form factor
- Strict IPC-A-600 inspection standard, IPQC layer alignment, hole wall copper thickness control
- Flexible surface finish options, good solderability for through-hole components (ISA bus boards mostly use thru-hole parts)
- DFM review before production: check ISA connector footprint, routing conflict, thermal relief for power pins
- Quick prototype and mass production support, electrical continuity & Hi-pot test for every batch
Application Scenarios
- Industrial ISA bus data acquisition cards
- Analog sensor signal sampling board
- Legacy industrial control & test measurement equipment
- Factory automation monitoring module
- Instrumentation data capture system
Company Service (Volectronics Tech Co., Ltd.)
We provide one-stop PCB custom service including DFM checking, stack-up design, controlled impedance calculation, prototype and volume manufacturing. Strict IPC quality control with full electrical testing. Flexible lead time for small batch prototypes and mass orders. We support technical consultation for industrial control PCB design optimization.
