In SMT electronic assembly, small parts like ICs and chips are very likely to get damaged by ESD. Even 100V of static can cause damage that can't be fixed or hidden defects, which lowers yield and raises rework costs. Conventional trays that aren't stable in size can cause PCBs to be misaligned and placed incorrectly. Dirty surfaces can also cause solder pads to become contaminated and cold joints to form. Cleaning products contain chemicals that quickly corrode regular plastics, which shortens their life and makes them less effective at preventing static, which is even more dangerous for production. PPS Sheet is a high-performance static dissipative material that solves these problems perfectly. Polyphenylene Sulfide Sheet protects against ESD in a stable way and can handle heat and chemicals very well. AHD's PPS Plastic Sheet guarantees consistent quality for long-term, high-precision SMT manufacturing.
Why SMT Assembly Needs Special ESD Materials
SMT lines work at high temperatures and need strict control of static electricity. Under these conditions, regular ESD materials break down quickly, with surface resistance going over 10⁶–10⁹ Ω/sq, which means they lose ESD protection. Thermal expansion rates above 100 ppm/°C cause big changes in size, which makes it harder to place things accurately. Also, low cleanliness grades (Class 1000 or lower) let particles get into the circuit, which can cause short circuits.
SMT ESD Material must meet three core criteria per ANSI/ESD S20.20:
Surface resistivity: 10⁶–10⁹ Ω/sq (stable after 500 hours)
Continuous heat resistance: ≥200°C
Dimensional stability: ≤50 ppm/°C thermal expansion
Benefits of ESD Safe PPS in SMT Applications
1. Long-lasting and stable anti-static performance
Anti-Static Polyphenylene Sulfide Sheet that has permanent anti-static properties (not just a coating on the surface). Surface resistance stays between 10⁶ and 10⁹ Ω/sq for a long time, which is in line with ANSI/ESD S20.20 and SJ/T 10694. Static dissipation time of less than 0.2 seconds stops charge from building up on sensitive parts.
2. Very good resistance to high temperatures
ESD PPS sheet that can handle high temperatures can handle short bursts of 260°C and long periods of 220–240°C. This makes it perfect for a high-temperature setting. It stays stiff and flat during thermal cycling, which makes sure that the PCB stays in the same place. ESD ABS, on the other hand, softens at 80°C.
3. Excellent dimensional stability
The ESD PPS Plate has a low thermal expansion coefficient (35 ppm/°C) and a high modulus (3.0 GPa), which means it won't change shape much when the temperature changes. This level of accuracy is very important for anti-static PPS sheets that will be used as PCB carrier trays.
4. Better performance with chemicals and cleanliness
PPS sheet that is anti-static can stand up to acids, bases, fluxes, and cleaning solvents like isopropyl alcohol. Its surface doesn't outgas and has few particles, so it meets Class 100 cleanroom standards and keeps pads from getting dirty and cold joints from forming.
5. Cost-effective and long-lasting
The AHD ESD PPS Sheet keeps working for at least five years, which is three to five times longer than regular ESD plastics. Its long life means that it needs to be replaced less often and has less downtime, which lowers the total cost of ownership.
How to Pick an Anti-Static PPS Sheet for Electronics
Step 1: Check the ESD performance parameters
For SMT, choose 10⁶–10⁹ Ω/sq for surface resistivity (per ANSI/ESD S20.20).
Time to decay: ≤0.2s for a quick static discharge
Stability: Resistance drift is less than 5% after 500 hours at 85°C and 85% RH.
Step 2: Check for thermal compatibility
For exposure in a reflow oven, the temperature must stay above 220°C.
HDT: ≥260°C to keep it from bending while soldering
Thermal expansion: ≤50 ppm/°C for stability of size
Step 3: Look at the mechanical and machining properties
Tensile strength: at least 40 MPa for durability of the structure
Flatness: ≤0.5mm/m for precise tray uses
Machinability: Can be drilled, milled, and routed with a CNC machine.
Step 4: Make sure it is clean and resistant to chemicals
Class 100 cleanroom compatible, doesn't give off gas when cleaned
Resistant to common SMT chemicals like flux, IPA, and solder paste cleaners.
Step 5: Choose a trustworthy ESD PPS sheet supplier for making electronics.
Work with manufacturers who have a track record of success:
AHD has been making specialized engineering plastics since 1994, giving them over 32 years of experience.
Full product line: a full range of engineering plastic sheets and rods
Quality check: All inspections passed, with a 99.8% compliance rate.
Customization: ESD PPS sheet for SMT fixture that can be made to fit any size (5–100mm thick and 610–1220mm wide)
ESD PPS Sheet for Making Semiconductors and SMT Fixtures
Trays and tools for handling PCB carriers
The anti-static PPS sheet for the PCB carrier tray keeps ESD damage from happening while the PCB is being moved, placed, or tested. Because it is so precise, it makes sure that components are in the right place, which cuts down on pick-and-place mistakes.
Pallets and fixtures for reflow ovens and SMT
High-temperature ESD PPS board for reflow ovens is a strong, heat-resistant base for PCBs that are soldered together at high temperatures (up to 260°C). It doesn't warp after thousands of cycles, so it stays dimensionally accurate.
Waffle Pack and Semiconductor Component Trays
ESD PPS sheets for semiconductor manufacturing keep ICs, chips, and other sensitive parts safe while they are being stored, moved, and tested. It has permanent anti-static properties that stop latent ESD failures, which is important for semiconductor applications that need to be very reliable.
AHD has been making ESD PPS solutions for 32 years.
Since 1994, we have been a top manufacturer of AHD plastic sheets and rods. We make high-performance ESD PPS sheets that are perfect for the SMT and semiconductor industries. Some of the things that make us better are:
Unmatched quality: full test reports, strict ISO 9001 control, and 99.8% performance compliance
Custom features: Custom-sized ESD PPS sheet for SMT fixture (5 to 100 mm thick and 610 to 1220 mm wide)
Products that meet ANSI/ESD S20.20 and SJ/T 10694 standards are ESD compliant.
One-stop service: help with choosing materials and CNC machining
The ESD PPS Sheet (Anti-Static Polyphenylene Sulfide Sheet) is the best material for SMT electronic assembly because it protects against ESD, can withstand high temperatures, stays the same size, and is resistant to chemicals. It solves the main problems with traditional materials, making them more reliable in the long term, lowering costs, and increasing yield.
Why should you use ESD PPS sheet in SMT assembly? The answer is that it has a unique mix of properties that no other ESD material can match. For your next project, work with a reliable ESD PPS sheet supplier for electronics manufacturing, such as AHD.
