Industrial Connector Amphenol MS3181-12CA with 3 Point Bayonet Coupling and Polarized Keyway Design
Product Overview
Amphenol Miniature Cylindrical Connectors, including the PT, SP, and MS/PT series, are designed for general duty and environmental applications in industrial and military markets. These connectors offer twice the number of contacts in half the size of standard connectors, providing significant design flexibility. They are suitable for applications such as instrumentation, monitoring equipment, machine tool automation, communications, industrial controls, robotics, and military/aerospace. Key features include environmental sealing achieved through grommet and clamp design, an operating temperature range of -55C to +125C, and operating voltages up to 1000 VAC (RMS) at sea level. Contacts are machined from a low-loss copper alloy and gold-plated for corrosion resistance and extended shelf life. Resilient inserts provide high dielectric strength and a moisture barrier. Various shell finishes and back-end accessories are available.
Product Attributes
- Brand: Amphenol
- Series: 97 Series, PT Series, SP Series, MS/PT Series, PT-SE, SP-SE, MS/PT-SE
- Certifications: UL recognized, CSA recognized (97 Series)
- Material: Aluminum shells, low loss copper alloy contacts (gold plated)
- Inserts: Resilient neoprene
- Coupling: Bayonet coupling (3-point)
- Polarization: 5 key/keyway mating
- RoHS Compliant: Available in some miniature connector styles.
- Quality Systems: Certified to ISO 9001:2015, ISO 14001:2015, ISO/TS 16949:2016
- Origin Note: Formerly known as Bendix products.
Technical Specifications
| Feature | Specification |
|---|---|
| Operating Temperature | -55C to +125C |
| Operating Voltage | Up to 1000 VAC (RMS) at sea level |
| Contact Retention System | Non-Removable (PT, SP, MS/PT), Removable (PT-SE, SP-SE, MS/PT-SE) |
| Contact Termination | Solder, Crimp (Rear Insertion/Front Release) |
| Shell Finishes | Olive Drab Cadmium (003), Anodic Coated (005), Gray Zinc Nickel (072), Black Zinc Cobalt (025), Electroless Nickel (023) |
| Hermetic Seal | Available (fused compression glass sealed inserts) |
| Coaxial Contacts | Size 8 & 12 Crimp and Solder types available |
| Printed Circuit Board Contacts | Available in PT bayonet connectors (box mounting and jam nut receptacle styles) |
| EMI Filter Protection | Available (FPT Series) |
| Overmolded Cable Options | Available |
| Service Ratings (Power Contacts) | I: 600 VAC (Sea Level), II: 1000 VAC (Sea Level) |
| Contact Sizes | 20, 16, 12 |
| Shell Sizes | 6 through 24 |
| Insert Arrangements | Refer to pages 4-10 for availability (e.g., 6-1, 8-2, 10-5, 14-19, 22-55, 24-79) |
| PT, SP, MS/PT Service Classes | A, C, E, P, PG, H (Hermetic) |
| PT-SE, SP-SE, MS/PT-SE Service Classes | SE, SE (SR), SP |
| MS/PT-SE Service Classes | E, F, P |
| Contact Data/Ratings (Size 20) | Test Current: 7.5A, Max Millivolt Drop: 55 |
| Contact Data/Ratings (Size 16) | Test Current: 13.0A, Max Millivolt Drop: 50 |
| Contact Data/Ratings (Size 12) | Test Current: 23.0A, Max Millivolt Drop: 42 |
| Hermetic Helium Leakage | Less than 1.0 X 10-6 cc/sec. at 15 psi differential |
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