| Part Number: | ULO | - | TB38 | - | 16S | / | B | - | 02 | P | - | 3 | 1 | 0 | 0A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Manufacturer ULO - ULO Electronics |
Series TB38 - 6.35mm barrier PCB terminal blocks |
Terminal Type 16S - Straight offset pins, A or B housing |
Housing Ends A - Extended ends, 16S only |
Poles 02–24 - 2–24 poles, written with two digits |
Pole Unit P - Poles |
Color 1 - Grey |
Screw Head 0 - Slotted screw |
Screw Clamping 0 - Screw down |
Product Type 0A - Standard product |
The 16 series has one row of screw connections at a 6.35mm pitch. Each model supports 2–24 poles and 22–16AWG wire. S models have straight solder pins below the housing; R/B has pins projecting from the side. The A housing extends beyond the terminal positions, while B housings have compact ends.
| Model | Pin configuration | Housing ends | Clamping screw | Torque |
|---|---|---|---|---|
| TB38-16S/A | Straight, offset pins | Extended A ends | M2.5 | 0.4N·m |
| TB38-16S/B | Compact B ends | |||
| TB38-16R/B | Side-projecting pins |
The stated general IEC rating is 17.5A at 300V for all three models. The additional condition-specific ratings below apply only to the named models. A dash indicates an unspecified condition or value.
| Model | Overvoltage category | Pollution degree | Rated current | Rated voltage | Rated impulse voltage |
|---|---|---|---|---|---|
| 16S/A | — | — | 17.5A | 300V | — |
| 16S/B | III | 2 | 4kV | ||
| 16R/B | 3 | ||||
| 2 | |||||
| II | 600V |
| UL use group | Rated current | Rated voltage | Wire range, all models |
|---|---|---|---|
| B | 10A | 300V | 22–16AWG |
| C | 150V | ||
| D | 300V |
| Connection parameter | 16S/A | 16S/B and 16R/B |
|---|---|---|
| Connection method | Screw connection | |
| Stripping length | Not specified | 7–8mm |
| Solid conductor cross section in mm² | Not specified | |
| Flexible conductor cross section in mm² | Not specified | |
| Flexible conductor with ferrule in mm² | Not specified | |
| Separate fixing screw and torque | Not specified | |
| Property | Specification |
|---|---|
| Insulating housing | PA66, material group I, UL94V-0 |
| Contact material and finish | Tin-plated copper alloy |
| Screw material, 16S/B and 16R/B | Nickel-plated steel |
| Protection level | IP20 |
| Operating temperature | -40°C to +105°C |
| RoHS statement | Specified for 16S/B and 16R/B |
Dimensions below are in mm. N is the number of poles; the 16S/A pin-span annotation uses P for the same pole count. All three housings are 14mm deep and 12.7mm high. Use the exact model drawing: pin thickness, solder-tail length and PCB hole shape differ.
| Dimension | 16S/A | 16S/B | 16R/B |
|---|---|---|---|
| Pitch | 6.35 | ||
| Overall length | 6.35 × (N + 2) | 6.35 × (N − 1) + 7.60 | |
| Central body length, excluding A extensions | 6.35 × N + 1.25 | Not applicable | |
| First-to-last pin span | 6.35 × (N − 1) | ||
| Pin width | 1.00 | ||
| Pin thickness | 0.80 | 0.70 ± 0.10 | |
| Straight tail below housing | 4.80 | 4.80 ± 0.30 | Not applicable |
| Pin row from nearest side face | 4.40 | Not applicable | |
| Side projection beyond housing | Not applicable | 6.08 ± 0.30 | |
| Side-pin lower-face height from housing base | Not applicable | 5.80 | |
| PCB hole | Ø1.60 round | 1.50 × 1.20 oval | |
The following general drawing tolerances apply where a specific dimension has no individual tolerance. Values and dimension ranges are in mm.
| Dimension range | Total pitch tolerance | Nominal dimension tolerance |
|---|---|---|
| Over 0 to 30 | ±0.18 | ±0.20 |
| Over 30 to 53 | ±0.20 | ±0.25 |
| Over 53 to 70 | ±0.25 | ±0.30 |
| Over 70 to 90 | ±0.30 | ±0.35 |
| Over 90 to 115 | ±0.35 | ±0.44 |
| Over 115 to 150 | ±0.44 | ±0.55 |
| Over 150 to 200 | ±0.55 | ±0.70 |
| Over 200 to 250 | ±0.70 | ±0.80 |
| Over 250 to 320 | ±0.75 | ±0.90 |
| Geometric characteristic | Range | Tolerance |
|---|---|---|
| Perpendicularity | 0–10 | 0.2 |
| Over 10 | 0.3 | |
| Symmetry | All | 0.3 |
| Straightness | Over 0 to 100 | 0.2 |
| Parallelism | Over 100 to 150 | 0.3 |
| Over 150 | 0.5 |
Specify the complete model and a two-digit pole count from 02 to 24. The general ordering diagram shows a broader two-digit field; it does not expand this series beyond 24 poles.
| Field | Selection |
|---|---|
| Series | TB38 |
| Configuration | 16S/A, 16S/B or 16R/B |
| Pole count | 02–24 followed by P |
| Color digit | 1 gray; 2 blue; 3 black; 4 green; 5 orange; 6 red; 7 transparent; 8 yellow; 9 white |
| Screw head digit | 0 slotted; 1 cross |
| Screw clamping digit | 0 screw down; 1 screw up |
| Standard designation | 0A |
