The JST PSI Connector is a versatile solution designed for wire-to-board and wire-to-wire applications with a 4.0 mm pitch, offering a balance of reliability and ease of use. Featuring low insertion force contacts, it ensures excellent operability and user-friendly handling. A secure locking mechanism prevents reverse insertion, enhancing safety and durability. The connector's housing is available in multiple colors and incorporates key shapes to prevent mismating, ensuring proper assembly even in complex wiring setups. With a finger-friendly design and the capacity to handle high electrical currents, the PSI Connector is a robust and efficient choice for demanding applications, supporting 2 to 4 circuits with three unique keying options.


Top entry type - 2 to 5 Circuits

Top entry type - 6 to 14 Circuits
| Circuits | Keying | Model No. | Dimensions(mm) | Q'ty/box | |
| A | B | ||||
| 2 | A | PSIP-02V-LE-A | 4 | 8.7 | 500 |
| B | PSIP-02V-Y-B | 4 | 8.7 | 500 | |
| C | PSIP-02V-R-C | 4 | 8.7 | 500 | |
| 3 | A | PSIP-03V-LE-A | 8 | 12.7 | 300 |
| B | PSIP-03V-Y-B | 8 | 12.7 | 300 | |
| C | PSIP-03V-R-C | 8 | 12.7 | 300 | |
| 4 | A | PSIP-04V-LE-A | 12 | 16.7 | 200 |
| B | PSIP-04V-Y-B | 12 | 16.7 | 200 | |
| C | PSIP-04V-R-C | 12 | 16.7 | 200 | |
| 5 | 一 | PSIP-05V-LE | 16 | 20.7 | 200 |
| 6 | 一 | PSIP-06V-LE | 8 | 12.7 | 200 |
| 8 | 一 | PSIP-08V-LE | 12 | 16.7 | 200 |
| 10 | 一 | PSIP-10V-LE | 16 | 20.7 | 150 |
| 12 | 一 | PSIP-12V-LE | 20 | 24.7 | 150 |
| 14 | 一 | PSIP-14V-LE | 24 | 28.7 | 100 |
Material: Glass-filled PBT, UL94V-0

| Model No. | Applicable wire | Insulation O.D. (mm) | Q'ty/reel | |
| mm² | AWG# | |||
| SPSI-001T-M1.1 | 0.13 to 0.33 | 26 to 22 | 1.3 to 2.4 | 2600 |
| SPSI-41T-M1.1 | 0.5 to 1.25 | 20 to 16 | 1.7 to 3.2 | 2600 |
Material and Finish: Copper alloy, tin-plated

Top entry type - 2 to 5 Circuits

Top entry type - 6 to 14 Circuits
| Circuits | Keying | Model No. | Dimensions(mm) | Q'ty/box | |
| A | B | ||||
| 2 | A | B02B-PSILE-A1 | 4 | 8.7 | 500 |
| B | B02B-PSIY-B1 | 4 | 8.7 | 500 | |
| C | B02B-PSIR-C1 | 4 | 8.7 | 500 | |
| 3 | A | B03B-PSILE-A1 | 8 | 12.7 | 300 |
| B | B03B-PSIY-B1 | 8 | 12.7 | 300 | |
| C | B03B-PSIR-C1 | 8 | 12.7 | 300 | |
| 4 | A | B04B-PSILE-A1 | 12 | 16.7 | 200 |
| B | B04B-PSIY-B1 | 12 | 16.7 | 200 | |
| C | B04B-PSIR-C1 | 12 | 16.7 | 200 | |
| 5 | 一 | B05B-PSILE-1 | 16 | 20.7 | 200 |
| 6 | 一 | B06B-PSILE-1 | 8 | 12.7 | 200 |
| 8 | 一 | B08B-PSILE-1 | 12 | 16.7 | 200 |
| 10 | 一 | B10B-PSILE-1 | 16 | 20.7 | 150 |
| 12 | 一 | B12B-PSILE-1 | 20 | 24.7 | 125 |
| 14 | 一 | B14B-PSILE-1 | 24 | 28.7 | 100 |
Material and Finish

| Circuits | Keying | Model No. | Dimensions(mm) | Q'ty/box | |
| A | B | ||||
| 2 | A | SO2B-PSILE-A1 | 4 | 8.7 | 350 |
| B | SO2B-PSIY-B1 | 4 | 8.7 | 350 | |
| C | SO2B-PSIR-C2 | 4 | 8.7 | 350 | |
| 3 | A | S03B-PSILE-A1 | 8 | 12.7 | 200 |
| B | S03B-PSIY-B1 | 8 | 12.7 | 200 | |
| C | S03B-PSIR-C2 | 8 | 12.7 | 200 | |
| 4 | A | S04B-PSILE-A1 | 12 | 16.7 | 150 |
| B | S04B-PSIY-B1 | 12 | 16.7 | 150 | |
| C | S04B-PSIR-C2 | 12 | 16.7 | 150 | |
Material and Finish

| Circuits | Keying | Model No. | Dimensions(mm) | Q'ty/bag | ||
| A | B | C | ||||
| 2 | A | PSIR-02V-LE-A | 4 | 16.1 | 12.5 | 200 |
| B | PSIR-02V-Y-B | 4 | 16.1 | 12.5 | 200 | |
| 3 | A | PSIR-03V-LE-A | 8 | 20.1 | 16.5 | 150 |
| B | PSIR-03V-Y-B | 8 | 20.1 | 16.5 | 150 | |
Material: Glass-filled PBT, UL94V-0

| Model No. | Applicable wire | Insulation O.D. (mm) | Q'ty/reel | |
| mm² | AWG# | |||
| SPSM-001T-M1.1 | 0.13 to 0.33 | 26 to 22 | 1.3 to 2.4 | 2600 |
| SPSM-41T-M1.1 | 0.5 to 1.25 | 20 to 16 | 1.7 to 3.2 | 2600 |
Material and Finish: Copper alloy, tin-plated

Send us your sample or drawing/schematic for quote price→ Feedback with quotation(1~3 days) → Confirm quotation → Arrange sample you for approval→ [Make mold if needed (7 days) →Mold test] → Making samples(1~3 days)→Samples test(Approval) → place order for Mass production(2~3 weeks)→ Quality checking→ Packing → Delivery → After Service → Repeat Order.