| Part Number: | ULO | - | TB51 | - | 306 | / | 5.0 | - | 02 | P | - | 4 | 000A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Manufacturer ULO - ULO Electronics |
Series TB51 - Wire protector PCB terminal blocks |
Model 306 - 5.0mm wire protector terminal block |
Pitch 5.0 - 5.0mm |
Poles 02–24 - 2–24 poles, written with two digits |
Pole Unit P - Poles |
Color 1 - Grey |
Customer Code 000A - Fixed customer requirements code shown in the drawing |
TB51-306/5.0 is a single-row PCB terminal block with screw clamping and stainless-steel wire protection. Select 2–24 poles at 5.0mm pitch. Wires enter from the side, the screws are accessed from above, and the rectangular solder tails fit a single row of PCB holes.
| Construction parameter | Specification |
|---|---|
| Model | TB51-306/5.0 |
| Pitch | 5.0mm |
| Poles and rows | 2–24 poles; one row |
| Connection method | Screw connection with wire protection |
| Protection level | IP20 |
| Operating temperature | -40°C to +105°C |
| Housing | PA66; 2-pole and 3-pole housing sections |
| Insulation group and flammability | Material group I; UL94V-0 |
| Solder pins | Tin-plated brass |
| Screws | Zinc-plated steel |
| Wire-protection spring | Stainless steel |
| Material compliance | RoHS compliance declared |
The general IEC rating is 15A, 250V. The specified operating condition is overvoltage category III, pollution degree 2.
| Overvoltage category | Pollution degree | Rated voltage | Rated impulse voltage |
|---|---|---|---|
| III | 3 | Not specified | Not specified |
| 2 | 250V | 4kV | |
| II | Not specified | Not specified |
| UL use group | Rated current | Rated voltage |
|---|---|---|
| B | 10A | 300V |
| C | Not specified | Not specified |
| D |
Dielectric withstand is 2000VAC for 1 minute. Certificate file numbers are unspecified.
| Wiring parameter | Specification |
|---|---|
| UL conductor range | 22–14AWG |
| Solid conductor | 0.75–1.5mm² |
| Flexible conductor | 0.75–1.5mm² |
| Flexible conductor with ferrule | 0.75–1.5mm² |
| Clamping screw | M2.5 |
| Tightening torque | 0.4N·m |
| Wire stripping length | 6mm nominal; 5–6mm specified range |
| Separate fixing screw and torque | Not specified |
| Field | Selection or meaning |
|---|---|
| Series and model | TB51; 306/5.0 |
| Pole field | 02P–24P |
| Colour code | 1 grey; 2 blue; 3 black; 4 green; 5 orange; 6 red; 7 transparent; 8 yellow; 9 white |
| General screw-head field | 0 slot; 1 cross |
| General screw-clamping field | 0 screw down; 1 screw up |
| Standard-product suffix | 0A; the model drawing shows customer suffix 000A after the colour field |
The general legend covers the terminal range; its 02–99 pole field does not extend this model beyond 2–24 poles.
N is the number of poles. The solder tails have a rectangular cross-section. The PCB hole diameter is unspecified.
| Dimension | Value |
|---|---|
| Housing length | 5.0mm × N |
| First-to-last pin span | 5.0mm × (N − 1) |
| Pin pitch | 5.00mm |
| End pin to housing end | 2.50mm |
| Housing height | 10.00mm |
| Housing depth | 7.50mm |
| Solder-tail projection | 3.70±0.30mm |
| Solder-tail cross-section | 0.60mm × 1.00mm |
| PCB hole row to indicated body edge | 4.20mm |
Individual dimension tolerances take precedence over these general values.
| Dimension range | Total pitch tolerance | Nominal dimension tolerance |
|---|---|---|
| Over 0mm to 30mm | ±0.18mm | ±0.20mm |
| Over 30mm to 53mm | ±0.20mm | ±0.25mm |
| Over 53mm to 70mm | ±0.25mm | ±0.30mm |
| Over 70mm to 90mm | ±0.30mm | ±0.35mm |
| Over 90mm to 115mm | ±0.35mm | ±0.44mm |
| Over 115mm to 150mm | ±0.44mm | ±0.55mm |
| Over 150mm to 200mm | ±0.55mm | ±0.70mm |
| Over 200mm to 250mm | ±0.70mm | ±0.80mm |
| Over 250mm to 320mm | ±0.75mm | ±0.90mm |
| Geometric characteristic | Applicable dimension | Tolerance |
|---|---|---|
| Perpendicularity | 0–10mm | 0.2mm |
| Over 10mm | 0.3mm | |
| Symmetry | All | 0.3mm |
| Straightness | Over 0mm to 100mm | 0.2mm |
| Parallelism | Over 100mm to 150mm | 0.3mm |
| Over 150mm | 0.5mm |
