Compact high density connector JST 20FMN BMT A TF LF SN for 1.0 millimeter pitch FFC applications
FMN CONNECTOR 1.0 mm pitch
Compact, high-density connectors designed for PC board applications, specifically for FFC (Flexible Flat Cable) with a non-ZIF (Zero Insertion Force) type. These connectors feature a single-sided contact structure and a heat-resistant design suitable for surface mounting, enabling automatic assembly via embossed taping. They are ideal for low-cost, multi-core applications and are available in both DIP (Dual In-line Package) and SMT (Surface Mount Technology) types, offering multi-entry configurations.
Product Attributes
- Brand: JST (implied by contact information)
- Material: Contact: Phosphor bronze, copper-undercoated, tin-plated (reow treatment). Housing: 4 to 22 circuits/PBT, UL94V-0; 23 to 40 circuits/PA 6T, UL94V-0.
- Color: 4 to 22 circuits: Normal type - gray, Reverse type - brown. 23 to 40 circuits: Normal type - gray, Reverse type - black.
- Certifications: E60389, LR20812, RoHS2 compliance.
- Mounting Type: Surface Mount (SMT), Through-hole (DIP).
- FFC Compatibility: 1.0 mm pitch, 0.7 mm conductor width, 0.3 0.05 mm mating part thickness.
- PC Board Compatibility: 1.6 mm thickness.
Technical Specifications
| Specification | Value |
|---|---|
| Current Rating | 0.5 A DC |
| Voltage Rating | 50 V DC |
| Temperature Range | -25 to +85 (including temperature rise in applying electrical current) |
| Contact Resistance (Initial) | 30 m max. |
| Contact Resistance (After Environmental Tests) | 50 m max. |
| Insulation Resistance | 500 M min. |
| Withstanding Voltage | 500 VAC/minute |
Product Variants and Dimensions
| Type | No. of Circuits | Model No. (Example) | Dimensions (mm) A | Dimensions (mm) B | Dimensions (mm) C | Q'ty/box (Normal Type) | Q'ty/box (Reverse Type) |
|---|---|---|---|---|---|---|---|
| SMT Type / Top Entry / Normal | 4 | 04FMN-STK-A | 3.0 | 6.0 | 5.0 | 2,160 | 3,600 |
| SMT Type / Top Entry / Reverse | 4 | 04FMN-STRK-A | 4.0 | 7.0 | 6.0 | 1,860 | 3,100 |
| SMT Type / Side Entry / Normal | 4 | 04FMN-SSTK-A | 5.0 | 10.0 | 7.0 | 1,620 | 2,700 |
| SMT Type / Side Entry / Reverse | 4 | 04FMN-SSTRK-A | 6.0 | 11.0 | 8.0 | 1,440 | 2,400 |
| DIP Type / Top Entry / Normal | 4 | 04FMN-BMT-A-TF | 3.0 | 6.0 | 5.0 | 2,000 | - |
| DIP Type / Top Entry / Reverse | 4 | 04FMN-BMTR-A-TB | 4.0 | 7.0 | 7.0 | - | - |
| SMT Type / Side Entry with Stop / Normal | 4 | 04FMN-BTK-A | 3.0 | 6.0 | 6.0 | 2,160 | 3,600 |
| SMT Type / Side Entry with Stop / Reverse | 4 | 04FMN-BTRK-A | 4.0 | 7.0 | 8.0 | 1,860 | 3,100 |
| DIP Type / | 4 | 04FMN-BMTTN-A-TF | 3.0 | 6.0 | 6.0 | 2,000 | - |
| DIP Type / | 4 | (Not specified in detail) | 3.0 | 6.0 | 6.0 | 2,000 | - |
| DIP Type / | 4 | (Not specified in detail) | 4.0 | 7.0 | 7.0 | - | - |
| DIP Type / | 4 | (Not specified in detail) | 4.0 | 7.0 | 7.0 | - | - |
| SMT Type / Top Entry / Normal (23 Circuits) | 23 | 23FMN-STK-A | 25.0 | 30.0 | 27.0 | 420 | 700 |
| SMT Type / Top Entry / Reverse (23 Circuits) | 23 | 23FMN-STRK-A | 26.0 | 31.0 | 28.0 | 420 | 700 |
| SMT Type / Side Entry / Normal (23 Circuits) | 23 | 23FMN-SSTK-A | 27.0 | 32.0 | 29.0 | 420 | 700 |
| SMT Type / Side Entry / Reverse (23 Circuits) | 23 | 23FMN-SSTRK-A | 28.0 | 33.0 | 30.0 | 420 | 700 |
| DIP Type / Top Entry / Normal (23 Circuits) | 23 | 23FMN-BMT-A-TF | 25.0 | 30.0 | 27.0 | 2,000 | - |
| DIP Type / Top Entry / Reverse (23 Circuits) | 23 | 23FMN-BMTR-A-TB | 26.0 | 31.0 | 29.0 | - | - |
| SMT Type / Side Entry with Stop / Normal (23 Circuits) | 23 | 23FMN-BTK-A | 25.0 | 30.0 | 30.0 | 420 | 700 |
| SMT Type / Side Entry with Stop / Reverse (23 Circuits) | 23 | 23FMN-BTRK-A | 26.0 | 31.0 | 32.0 | 420 | 700 |
Note: The table above provides examples for 4 and 23 circuits. Full model numbers and dimensions for all circuit counts (4 to 40) are available upon request. Refer to JST for complete details.
Handling Precautions: Refer to "Handling Precautions for Terminals and Connectors" on the JST website.
2409302231_JST-20FMN-BMT-A-TF-LF-SN_C5302616.pdf
