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Antistatic PS thermoformed trays for electronic and precision components; 10⁹–10¹¹ Ω is a target project specification, not a certified or measured batch result.
QUICK ANSWER
Wenzhou Tonghou Plastic Products Co., Ltd. makes custom antistatic PS electronics inserts. Specify part dimensions, sensitive contact surfaces, handling conditions and resistance acceptance requirements. The 10⁹–10¹¹ Ω range is a target project specification, not certification or a measured batch result. Agree the test method, temperature, humidity, measurement locations and retest conditions. Tray colour or an antistatic label alone does not establish suitability for a component.
Manufacturer: Wenzhou Tonghou Plastic Products Co., Ltd. · Product information updated: 2026-08-31
Tell us the use conditions, acceptance requirements and any test documentation you need so we can review the material and design. View company and project records →
01 / PRODUCT ANALYSIS
Agree the method, temperature, humidity and sampling locations before testing. At acceptance, compare results from production-representative finished trays with the target specification.
02 / PRODUCT GALLERY
ELECTRONICS SEGMENTS
An electronics tray locates parts, fits the handling process and meets the project's agreed ESD requirements:
Trays for boards and modules control contact points (clearing solder joints and connectors), lock orientation and hold array pitch. Even multi-cavity layouts double as counting aids, exposing missing or reversed parts at a glance.
Small sensitive parts such as connectors and sensors have fragile leads: cavities provide lead clearance and body retention to prevent lead deformation under shipping vibration. Dimensional consistency requirements here exceed ordinary industrial packaging.
Lenses, optical films and display modules are sensitive to surface contact and particulates: suspended support, edge gripping or large clearance zones reduce contact area, while material and environmental particle control is agreed per project.
Trays circulating between stations serve line takt: stacking, denesting, pick orientation and loading method are designed alongside line equipment. For reusable trays, dimensional retention and antistatic decay over cycles both need evaluation.
Transport-facing trays are engineered with outer cartons and cushioning against drop and stacking loads; long-term storage adds attention to the time decay of antistatic performance and to temperature-humidity effects.
DESIGN DETAIL
During manufacturability review, these decisions determine how the tray performs on the line and in transit:
Cavity pitch must match pick-and-place and inspection equipment—and often the customer's own line. Pitch tolerance comes from forming shrinkage and tooling precision combined; review defines the critical dimensions and how they are inspected.
Thumb slots, gripper clearances and vacuum lands are inputs from manual and automated handling. Retaining ribs and clearance zones control part attitude—preventing movement without creating pick interference or scuffing.
Stackable designs control stack height and add anti-nesting features so automated denesters separate trays cleanly. A higher stacking ratio cuts storage and freight, but demands more stiffness from the antistatic material.
Molded-in marks (part number, cavity count, orientation arrows) support line scanning and error-proofing. Mark placement and depth are fixed at the tooling stage so they never weaken the structure.
ESD MATERIALS
Static-control materials are graded by surface resistance; selection follows the sensitivity of the devices being protected and the use case:
This is a target project specification, not a certified or measured batch result. Whether it is suitable for a project depends on the agreed ESD requirement and acceptance evidence for the finished tray.
Lower resistance drains charge quickly, for higher-sensitivity devices or setups that rely on a ground path. Usually achieved with carbon-based fillers, which limits color (mostly black) and raises cost; whether it is needed should follow a device-sensitivity assessment.
Permanent antistatic performance lives in the resin itself rather than migrating surface agents, so it shifts less with humidity and time; coated versions cost less but wear and decay. High-circulation applications should evaluate permanent grades first.
Antistatic PS offers rigidity and dimensional stability, the common substrate for electronics trays; transparency requirements open evaluation of clear antistatic options; heat- or chemical-resistant duties call for other substrates, with resistance re-verified on the new base.
VERIFICATION
Before sampling, agree how and where to measure resistance, and when reused trays need retesting:
Surface-resistance readings shift markedly with temperature, humidity, electrode setup and probe location. Acceptance criteria must specify method, environment and sampling points (cavity base, walls, flange)—otherwise the two parties are comparing incomparable numbers.
Antistatic performance changes with time, humidity cycling and washing. Reusable trays should carry an agreed retest cycle; coated types decay faster and belong in the evaluation math.
The tray controls accumulation at contact surfaces; complete protection still requires grounded personnel, work surfaces, containers and packing steps. Tray selection fits inside an ESD control program—it does not replace one.
Acceptance rests on measured data from production batches. Grade changes, supplier shifts or process drift can all move resistance readings, so they belong under change control and periodic verification.
RFQ TO PRODUCTION
Project velocity depends on how complete the early inputs are. The typical rhythm:
Share component geometry and sensitive leads, target resistance range, test standard, circulation count, stacking and automated pick method. Review outputs the material direction, structural feasibility, resistance acceptance plan and the risks needing your confirmation.
Samples validate cavity fit, handling ease, stacking and denesting, plus measured resistance. Samples must come from production-intent tooling and the specified antistatic grade—otherwise neither resistance nor dimensional conclusions transfer.
The pilot confirms the critical-dimension list, resistance acceptance rules (method, conditions, frequency) and packing. After freeze, production runs under change control, with material or process changes triggering re-verification.
Write the measurement frequency, temperature, humidity, sampling locations and required records into the acceptance plan. Review the affected tests and acceptance criteria when the component, material or production line changes.
03 / BUYER QUESTIONS
Antistatic PS thermoformed trays for electronic and precision components; 10⁹–10¹¹ Ω is a target project specification, not a certified or measured batch result.
Agree the method, temperature, humidity and sampling locations before testing. At acceptance, compare results from production-representative finished trays with the target specification.
Component geometry and sensitive leads, resistance target, test method, temperature and humidity, sampling locations, sampling plan, cleanliness, reuse cycles, stacking and automated pick method.
The core difference is surface resistance class. Antistatic grade (our target: 10⁹–10¹¹ Ω) suppresses static accumulation and suits general ESD-sensitive parts; conductive grade (typically 10⁴–10⁶ Ω) drains charge faster for higher-sensitivity setups, with color and cost trade-offs. The choice should follow the device's ESD sensitivity classification.
It depends on how the property is built and the environment: permanent types carry it in the resin and shift less over time and humidity; coated types wear and decay. For reusable trays, agree on a retest cycle and manage service life with measured data.
Criteria must include the target range, test method, temperature-humidity conditions, sampling locations and measurement frequency. Numbers without conditions are meaningless—the same tray can read an order of magnitude apart at different humidity. These parameters are agreed item by item during project review.
Yes—provided automation is treated as a design input: pick-point geometry, array pitch, stack height and denesting features are designed alongside the gripper, vacuum or tray-denesting equipment. Share line equipment details or pitch requirements at the RFQ stage.
There is no fixed service life independent of use conditions. Record the antistatic construction, humidity and temperature, abrasion, cleaning, circulation count and storage time, then retest new trays and agreed cycle points with the same method, conditioning and locations. Retire a tray when electrical, dimensional or surface results fall outside the project acceptance rules.
Acceptance comes from the device, process and packaging specification, not a universal number. Tonghou's 10⁹–10¹¹ Ω range is only a project target for discussion. Buyer and supplier must also define method, electrodes and voltage, conditioning, locations, sample count and decision rule, then assess finished-tray data. Resistance alone does not demonstrate every ESD function such as low charging or shielding.
Yes, it can change with the material system, humidity, time, abrasion, contamination and cleaning history. Establish a baseline, retest actual circulated trays at agreed intervals at the same locations, and record surface wear and environment. A material, process or cleaning change should trigger review of the retest plan.
Colour is not evidence of stability. Black and coloured products may use different resins, fillers or surface treatments, but the colour itself does not prove retained electrical performance. Form candidate materials into the real geometry and compare initial readings, multiple locations and post-circulation or abrasion results under the same conditioning, alongside contact, shedding and appearance needs.
A resistance tester with the range and method agreed by both parties can be used, but the instrument label does not define acceptance. Specify calibration status, electrodes, test voltage, conditioning, measurement time, cavity/base/flange locations and sample count. Test finished trays against the written decision rule and retain both conditions and results for comparison.
Compatibility cannot be inferred from the words antistatic PS. Provide the actual paste or its supplier data, contact location and duration, temperature, cleaning agents and acceptable contamination criteria. Test the specified PS formulation and formed sample for appearance, softening, cracking, residue and effects on paste performance, then obtain approval from the solder-paste or process owner before production use.
There is no universal alcohol-cleaning rule for every antistatic PS. Define the alcohol type and concentration, wipe material, repetitions, drying method and cleanliness target, then trial a small area of the actual material and formed part. Check whitening, cracking, distortion, surface migration or residue and retest resistance after drying and conditioning before applying the method to a batch.
Request a test report when asking for a quote. Agree the method, environment, locations, sample count, lot identification, acceptance range and testing party. Tonghou will then confirm the record format for the order and acceptance plan. The report must cover the delivered finished trays; data from another batch or the starting sheet cannot replace it.
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