# Reflective optical sensor

Vishay's reflective optical sensors with transistor output, chosen by part number: an infrared emitter and a phototransistor side by side, looking up. The sensor stands on the board (the XY plane), its body centred on the origin, the emitter and detector along X, and the leads down through the board. The housing is one solid. Each lens is its own solid, and so is each lead.

| Part number | Body (X x Y x height) | Leads below the board | Weight (sheet) |
|---|---|---|---|
| CNY70 | 7 x 7 x 6, two windows Ø 1.8 | 6 | ca. 0.70 g |
| TCRT5000 | 10.2 x 5.8, 7 high to the divider, two domed lenses, peg and clips | 3.5 | ca. 0.23 g |
| TCRT5000L | as TCRT5000 | 15 | ca. 0.23 g |

## Source

- **CNY70:** Vishay, CNY70 "Reflective Optical Sensor with Transistor Output", Rev. 1.8, 30-Jul-12, document number 83751, page 5, PACKAGE DIMENSIONS, drawing 6.544-5062.01-4, issue 6. Copy: vishay.com/docs/83751/cny70.pdf (1 request).
- **TCRT5000, TCRT5000L:** Vishay, TCRT5000, TCRT5000L "Reflective Optical Sensor with Transistor Output", Rev. 1.7, 17-Aug-09, document number 83760, page 4 (TCRT5000, drawing 6.550-5096.01-4, issue 4) and page 5 (TCRT5000L, drawing 6.550-5146.01-4), PACKAGE DIMENSIONS. Copy: vishay.com/docs/83760/tcrt5000.pdf (1 request).

All dimensions are in mm.

| CNY70 | Value |
|---|---|
| Body | 7 ±0.1 x 7 ±0.1, 6 -0.1 high |
| Overall height | 12 (leads 6 below the body) |
| Leads | 0.4 x 0.5, 2.8 (+0.3) apart along X and 2.54 nom. along Y, centred on the body |
| Windows | Ø 1.8 -0.1, 2.8 apart on the body's centre line, 1 deep (side view) |

| TCRT5000 / TCRT5000L | Value |
|---|---|
| Body | 10.2 (+0.1/-0.2) x 5.8 (+0.1/-0.2); its nose end flat 2.5 ±0.3 wide |
| Heights above the reference plane (the board) | shoulder 3, lens tops 6.3 (+0.5/-0.1), divider top 7 ±0.2 |
| Leads | 0.4 x 0.65 max, 5.5 apart along X and 2.54 along Y; 3.5 ±0.3 (TCRT5000) or 15 ±0.5 (TCRT5000L) below the plane |
| Locating peg | Ø 0.9 ±0.05, 1.5 ±0.2 below, 4.65 ±0.1 from the clips' centre along X and 2.45 off the centre line (footprint) |
| Clips | 0.95 ±0.05 wide (X), 3 below the plane; barb 1.2 wide, 0.5 beyond the body's side, its top 1.6 to 1.8 below and its widest 2.2 ±0.1 below; tips 2.45 off the centre line |

The leads and the clips are centred on the body. The sheet gives the leads' width only as "0.65 max", and the model uses 0.65 along their whole length.

**Proportions, stated plainly.** The TCRT5000 drawings show these but don't dimension them. They are scaled off the drawings:

- The body's underside stands 0.5 above the reference plane. Only the foot at the peg end reaches the plane, and it runs 1.42 in from that end.
- Above the shoulder, the body tapers to a top face 4.45 above the plane, 1.45 in at the ends and 1.1 in at the sides. The nose flat keeps its 2.5 width at the top face.
- The nose's corner chamfers run 1.7 along X.
- Each lens is 3.0 x 3.0, with upright sides and then a half-round top (radius 1.5) across Y. Its centre is 1.75 off the middle. The divider between the lenses is 0.45 thick and 3.0 long.
- Each clip's stem is the barb's inner 0.7. Its tip is pointed, 0.25 in from its inner face.
- The CNY70's small notches and the inner frame lines on its top and bottom views aren't modelled. Its lens discs stand 0.03 above the window floors so their edges show.

**Materials.** The sheets name no materials. The housing is black moulded plastic that blocks visible light (the sheets list a "daylight blocking filter"), shown as pc. The lenses are the epoxy over the emitter (clear, tinted blue) and over the detector (dark filter), shown as pmma (1.18; epoxy is about 1.2). The leads are metal, shown as copper.

**Mass.** CNY70: the model weighs about 0.39 g (housing 289 mm³ of pc, leads 4.8 mm³ of copper) against the sheet's ca. 0.70 g. TCRT5000: about 0.32 g (housing 212 mm³, lenses 27.5 mm³, leads 4.2 mm³) against ca. 0.23 g. The sheets don't describe what is inside the housings (lead frame, chips, filler) or the hollows the drawings don't dimension, so the difference isn't explained further. No material was picked to match the weight.

## Catalogue models

The old catalogue's `Vishay_CNY70` and `Vishay_TCRT5000` entries map to the presets of those part numbers. Their reference models were measured and agree with the drawings:

| Model | Measured | Drawing |
|---|---|---|
| Vishay_CNY70 | body 7.01 x 7.00 x 6.00, 12 overall; leads 0.40 x 0.50 at 2.80 x 2.54, centred; windows Ø 1.8, 2.8 apart, floors 1 below the top | 7 x 7 x 6, 12; 0.4 x 0.5 at 2.8 x 2.54; Ø 1.8 at 2.8 |
| Vishay_TCRT5000 | body 10.2 x 5.8, 7.0 high, leads 3.5 below; leads 0.40 x 0.66 at 5.50 x 2.54; peg Ø 0.9, 1.5 below, 4.65 from the centre; clips 0.96 wide, 3.0 below | 10.2 x 5.8, 7; 3.5; 0.4 x 0.65 max at 5.5 x 2.54; Ø 0.9, 1.5, 4.65; 0.95, 3 |

The family's other entries name other parts and makers (Everlight, Kodenshi, Osram, Sharp, Broadcom, light-dependent resistors and Vishay's IR receiver packages). They are left with their reasons in `COVERAGE.md`.