Bectron® PK 4332
Bectron® PK 4332 is a soft, elastic polyurethane resin offering exceptional flexibility, chemical resistance, and thermal cycling performance. It is ideal for selective coating or potting of sensitive electronics exposed to harsh environments.
Bectron® PK 4332 Features:
- Very soft, self-leveling cured finish
- Withstands -60°C to +125°C without degradation
- Excellent adhesion, even after temperature cycling
- ROHS compliant
Bectron® PK 4332 Applications:
- Selective coating of electronic assemblies and PCBs
- Potting ultrasonic sensors and automotive electronics
- Protection from vibration and chemical exposure
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Properties of component as supplied
Property | Condition | Value | Unit |
Viscosity, DIN 53019 | D=15 s-1, 23°C | 5.500 ± 1.000 | mPas |
Density, DIN EN ISO 2811-2 | 23°C | 1,05 ± 0,03 | g/cm³ |
Shelf life | 23°C | 7 | months |
Thermal properties of cured compound
Property | Condition | Value | Unit |
Coefficient of thermal expansion, Beck Test M 56 | -20°C to + 90°C | 200·10-6 | K-1 |
Thermal conductivity, DIN 52616 | 23°C | 0,18 ± 0,02 | W/mK |
Mechanical properties of cured compound
Property | Condition | Value | Unit |
Glass transition temperature, IEC 61006 | - | -50 | °C |
Shore hardness, ISO 868 | 23°C | 35 ± 10 | Shore A |
Here are BECTRON® PK-Series (1 Component, heat-curing)
| Product Code | Colour | Viscosity [mPas] | Max Temp. [ºC/20,000 h] | Hardness [Shore] | Cure Speed [min] @ +90 ºC | Thermal Conductivity [W/mK] |
| PK 4332 | Black | 5,250 | +125 ºC | 35 A | 60 | 0.2 |
| PK 4340 | Black | 9,500 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4342 | Black | 5,000 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4344 | Black | 2,000 | +125 ºC | 70 A | 30 | 0.3 |
| PK 4351 | Black | 6,250 | +125 ºC | 30 D | 30 | 0.3 |
| PK 4353 | Black | 3,750 | +125 ºC | 30 D | 30 | 0.3 |
| PK 4364B | Blue | 5,000 | +125 ºC | 40 D | 30 | 0.3 |
| PK 5532 | Black | 5,500 | +130 ºC | 35 A | 30 | 0.2 |
| PK 5542 | Black | 5,000 | +130 ºC | 70 A | 30 | 0.4 |
| PK 5553 | Black | 3,500 | +130 ºC | 30 D | 30 | 0.3 |
