High reliability chip carrier socket 3M 8452-21B1-RK-TR with molded slots and optional PCB locating posts
Product Overview
The 3M Chip Carrier Sockets, Surfacemount 8400 Series, are designed to accept chip carriers conforming to JEDEC outlines MO-047 for square and MO-052 for rectangular. These sockets feature a high-temperature insulator compatible with IR reflow and wave soldering processes, and are designed for automated loading equipment. The open-top design ensures unrestricted airflow, while molded slots facilitate easy device extraction. Optional PCB locating posts are available. These sockets are RoHS Compliant.
Product Attributes
- Brand: 3M
- Series: 8400 Series
- Insulation Material: Glass Filled Polyphenylene Sulfide (PPS)
- Flammability: UL 94V-0
- Color: Black
- Contact Material: Copper Alloy
- Underplating: 50 " [ 1.27 m ] Nickel
- Overall Wiping Area Plating: 160 ", [ 4.06 m ] Matte Tin
- Certifications: RoHS Compliant (RIA E1 and C1 apply)
- Alignment Feature: With Location Post (tube packaging only) or Without Location Post
- Packaging: Tube Pack (TP) or Tape and Reel (TR)
Technical Specifications
| Specification | Value |
|---|---|
| Contact Resistance | 15 m |
| Insulation Resistance | >103 M minimum |
| Capacitance | <1 pF at 1 MHz |
| Temperature Rating | -40C to +105C |
| Process Rating | Maximum 260C, single pass (profile per J-STD-020C) |
| Moisture Sensitivity Level | 1 (per J-STD-020C) |
Ordering Information (Example Dimensions)
| Contact Quantity | A (mm [Inch]) | B (mm [Inch]) | C (mm [Inch]) | D (mm [Inch]) | E (mm [Inch]) | F (mm [Inch]) | G (mm [Inch]) | H (mm [Inch]) |
|---|---|---|---|---|---|---|---|---|
| 20 | 15.65 [0.616] | 15.65 [0.616] | 5.08 [0.200] | 5.08 [0.200] | 10.03 [0.395] | 10.03 [0.395] | 12.70 [0.500] | 6.35 [0.250] |
| 28 | 18.18 [0.716] | 18.18 [0.716] | 7.62 [0.300] | 7.62 [0.300] | 12.57 [0.495] | 12.57 [0.495] | 15.24 [0.600] | 7.62 [0.300] |
| 32 | 18.18 [0.716] | 20.75 [0.817] | 7.62 [0.300] | 10.16 [0.400] | 12.57 [0.495] | 15.11 [0.595] | 17.78 [0.700] | 7.62 [0.300] |
| 44 | 23.28 [0.917] | 23.28 [0.917] | 12.70 [0.500] | 12.70 [0.500] | 17.65 [0.695] | 17.65 [0.695] | 20.32 [0.800] | 10.16 [0.400] |
| 52 | 25.84 [1.017] | 25.84 [1.017] | 15.24 [0.600] | 15.24 [0.600] | 20.19 [0.795] | 20.19 [0.795] | 22.86 [0.900] | 11.43 [0.450] |
| 68 | 30.95 [1.219] | 30.95 [1.219] | 20.32 [0.800] | 20.32 [0.800] | 25.27 [0.995] | 25.27 [0.995] | 27.94 [1.100] | 13.97 [0.550] |
| 84 | 36.00 [1.417] | 36.00 [1.417] | 25.40 [1.000] | 25.40 [1.000] | 30.35 [1.195] | 30.35 [1.195] | 33.02 [1.300] | 16.51 [0.650] |
Note: For Tape and Reel Packaging dimensions, contact 3M customer service or your preferred 3M distributor. Dimensions are in mm (Inch) with a tolerance of .3 for .0, .20 for .00, and .000 for .000 unless noted. Dimensions in brackets are for reference only.
Important Notice: 3M PLCC products are tin plated on the contact wiping surface. This plating is necessary to ensure mated reliability, as standard PLCC contacts are also tin plated. Tin whiskers are an inherent characteristic of tin, and mechanical stress can stimulate their growth. It is possible for the PLCC and PLCC socket to exhibit tin whisker growth after mating. 3M follows iNEMI plating recommendations, utilizing whisker-mitigating tin plating chemistry to reduce the likelihood of tin whisker growth. Customers should evaluate the suitability of a PLCC socket for their specific application, considering product lifespan, environment, mechanical stresses, humidity, and thermal cycling.
2410121845_3M-8452-21B1-RK-TR_C6713510.pdf
