| Part Number: | ULO | - | TB93 | - | 508A2 | / | 5.08 | - | 2 | x | 02 | P | - | 4 | 000A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Manufacturer ULO - ULO Electronics |
Series TB93 - Two-level rising clamp terminal blocks |
Model 508A2 - Two-level 5.08mm terminal block |
Pitch 5.08 - 5.08mm |
Levels 2 - Two levels |
Poles per Level 02 - 2 poles per level, 4 total |
Pole Unit P - Poles |
Color 1 - Grey |
Customer Code 000A - Fixed customer requirements code shown in the drawing |
TB93-508A2/5.08 is a two-level rising clamp PCB terminal with 5.08mm pitch within each row. The rows are staggered by half a pitch, keeping the upper and lower wire connections separately accessible. Select the pole count per level and use the two-row footprint for through-hole soldering.
| Characteristic | TB93-508A2/5.08 |
|---|---|
| Pitch | 5.08mm |
| Connection levels | Two |
| Pole count | 2–24 per level; two-level sections in 2- and 3-pole widths |
| Connection | Screw connection with rising clamp |
| Mounting | Through-hole PCB soldering |
| Protection level | IP20 |
| Operating temperature | -40°C to +105°C |
| Housing | PA66, material group I, UL94V-0 |
| Short and long conductors | Tin-plated brass |
| Clamping cage | Nickel-plated brass, M3 thread |
| Screw | Zinc-plated steel, M3 |
| Material compliance | RoHS compliance declared |
IEC voltage ratings depend on overvoltage category and pollution degree. Apply the complete rating for the relevant condition. UL use-group ratings are separate.
| Overvoltage category | Pollution degree | Rated current | Rated voltage | Rated impulse voltage |
|---|---|---|---|---|
| III | 3 | 17.5A | 160V | 4kV |
| 2 | 250V | |||
| II | 400V |
| UL use group | Rated current | Rated voltage |
|---|---|---|
| B | 12A | 300V |
| C | Not specified | Not specified |
| D | 10A | 300V |
| Wiring parameter | Value |
|---|---|
| UL conductor range | 26–14AWG |
| Solid conductor | 0.5–1.5mm² |
| Flexible conductor | 0.5–1.5mm² |
| Flexible conductor with ferrule | 0.5–1.5mm² |
| Clamping screw | M3 |
| Tightening torque | 0.5N·m, approximately 4.43lbf·in |
| Stripping length | 6–7mm; nominal 6mm |
| Separate fixing screw and torque | Not specified |
Certificate file numbers, packaging quantities and accessories are unspecified.
| Field | Meaning |
|---|---|
| Series and model | TB93; 508A2/5.08 |
| Pole field | 2×XXP, with XX indicating poles per level; select 02–24 |
| 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 suffix | 0A; the model drawing shows customer suffix 000A after the colour field |
The general ordering legend uses a two-digit 02–99 pole format across the terminal range. Apply the 508A2 model's two-level arrangement and 2–24 poles per level.
P is the number of poles per level. All dimensions in the following table are in millimetres. L is the indicated span between the first pin of one row and the last pin of the staggered row; L1 is the overall length.
| Dimension | Value |
|---|---|
| Overall length L1 | 5.08 × (P − 1) + 7.62 |
| Indicated pin span L | 5.08 × (P − 1) + 2.54 |
| Pole pitch | 5.08 |
| Row stagger along the length | 2.54 |
| End pin to corresponding row end | 2.54 |
| Upper / lower level height excluding pins | 25.50 / 13.80 |
| Overall depth | 21.80 |
| Indicated upper / lower housing sections in plan view | 10.20 / 10.10 |
| PCB pin-row spacing | 15.24 |
| Upper pin row from indicated rear body edge | 1.55 |
| Solder-pin section | 1.00 × 0.80 |
| Solder-tail projection | 3.50±0.30 |
| PCB hole diameter | Ø1.50 |
Individually stated 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 |
