Hitachi SRP-4 tips Overview

Hitachi SRP-4 tips (also called Probe Tips or Srp-4 Probe Tips) are core consumable accessories designed for Hitachi SRP-4 probes—key components of CMI series PCB Cooper Thickness Testers (including CMI563, CMI700, CMI760). Made with high-quality crystal materials, these replacement tips maintain the same measurement precision as the original probe, ensuring consistent accuracy in PCB surface copper thickness testing. As part of our one-stop PCB testing solutions, they seamlessly match other products like SRP-4 probe, ETP Probe (for hole copper testing), and Nylon brush (for tip cleaning), providing comprehensive support for PCB production quality control.

Technical Specifications and Material Science

The performance of the SRP-4 Contact Tips is directly tied to the specialized materials and strict manufacturing tolerances provided by Hitachi High-Tech SRP-4 Tips.

Specification	Detail	Significance
Model/Compatibility	SRP-4 Replacement Tips	$100\%$ compatible with the SRP-4 probe body used on CMI563/CMI700 Tips.
Core Material	High-purity crystal (Often a specialized Conductive Alloy Tips blend)	Ensures stable Micro-Resistance Tips performance and consistent eddy current induction.
Measurement Principle	Four-Point Probe Tips	Maintains the accuracy needed for Copper Thickness Testing Tips.
Resolution	Down to $0.001 \text{ mils}$ ( $<1 \mu\text{m}$ )	Supports high-precision testing for ultra-thin Electroless Copper layers.
Applicable Range	$0.25 \mu\text{m}$ to $152 \mu\text{m}$	Covers the entire spectrum of PCB Measurement Tips requirements, from fine lines to thick electroplating.

Key Features and Cost Advantages

Choosing OEM SRP-4 Tips over Generic SRP-4 Tips offers significant operational and financial benefits for purchasers looking at the SRP-4 Tips price / cost.

Feature	Advantage	Value to Purchaser
Seamless Compatibility	$100\%$ compatibility with CMI563/CMI700 Tips testers.	Eliminates performance issues associated with Non-OEM SRP-4 Tips and guarantees reliable PCB Measurement Tips results.
Cost Efficiency	Allows replacement of just the tip (SRP-4 Tips Refill), not the entire probe assembly.	Cuts annual probe maintenance costs by over $50\%$ compared to models requiring full probe replacement.
Quick Turnaround	On-site replacement can be completed by operators in $2–3$ minutes.	Minimizes tester downtime, ensuring production continuity and efficiency.
Consistent Accuracy	OEM SRP-4 Tips maintain the original $\pm 1\%$ accuracy standard.	Prevents costly manufacturing rejects due to inaccurate copper thickness data.

Application Scenarios

These precision SRP-4 Probe Tips are essential across high-reliability Electronics Manufacturing sectors:

High-Density Interconnect (HDI) Production: Critical for accurately measuring ultra-thin copper layers ( $<1 \mu\text{m}$ ) used in micro-vias, where the SRP-4 Crystal Tips may be preferred.
Automotive/Aerospace PCB: Used in PCB Quality Control (QC) to verify that heavy Electrodeposited Copper meets stringent durability standards.
R&D and Laboratory Testing: Provides reliable, traceable data for new process development, relying on the stability of the SRP-4 Tip Set.

Replacement and Maintenance Protocol

Proper Probe Tip Maintenance ensures the longevity of the SRP-4 Thickness Probe and the accuracy of the CMI gauge.

Preparation: Turn off the tester and disconnect the SRP-4 probe. Clean the probe base with a Nylon Brush.
Removal & Installation: Gently twist the old tip counterclockwise to remove; align and twist the new SRP-4 Tip Set clockwise to install securely (avoid overtightening).
Calibration Check: Always perform a Calibration Check with a standard plate immediately after SRP-4 Tip Replacement to verify the $\pm 1\%$ accuracy.
Post-Use Care: Wipe the tip surface with a clean cloth or Nylon Brush after each use to remove residual copper powder or contaminants.

Procurement and Industry Value

For PCB factories, managing the supply of Hitachi SRP-4 Tips is vital for continuous quality control.

Sourcing: Purchasers often look for an authorized Hitachi SRP-4 Tips supplier or SRP-4 Tips manufacturer to ensure they receive high-purity OEM SRP-4 Tips. They may also search for SRP-4 Tips bulk purchase or SRP-4 tips wholesale options to reduce unit costs.
Value: By simplifying maintenance and ensuring continuous, high-precision measurement, the SRP-4 probe replacement tips directly reduce copper thickness-related rejects and support compliance with international standards (IPC, RoHS, REACH).

FAQ

Q1: Are these tips compatible with all SRP-4 probe versions?

A1: Yes, they are compatible with all SRP-4 probe models matched with CMI563/CMI700/CMI760 testers, consistent with Hitachi’s original design.

Q2: How often should the replacement tips be changed?

A2: It depends on usage frequency—typically every 3–6 months for 8-hour daily use. If the tester shows data deviation (after calibration) or the tip is visibly worn, replace it immediately.

Q3: Can third-party cleaning tools be used for the tips?

A3: We recommend using our Nylon Brush—its soft bristles avoid scratching the crystal surface; rough tools may damage the tip and affect measurement accuracy.

Q4: Is there a warranty for the replacement tips?

A4: We provide a 3-month warranty. If the tip has quality issues (e.g., inaccurate measurement) within the warranty period (non-human damage), we offer free replacement.

Q5: Can the tips be used for hole copper thickness testing?

A5: No, they are only for SRP-4 probe (surface copper testing). For hole copper testing, please use our ETP Probe with matching replacement parts.