# RD 1/4W 1M J T/B A1

**TyoHM** · Through Hole Resistors · R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal

RD 1 from TyoHM, in a R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TyoHM |
| Package | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal |
| Category | Resistors |
| Pins | 2 |

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 1 |  | MΩ | nominal, catalog attribute (LCSC C433776) | catalog |
| Tolerance |  | -5 |  | 5 | % | catalog attribute (LCSC C433776) | catalog |
| Rated power |  |  |  | 250 | mW | catalog attribute (LCSC C433776) | catalog |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | a) 鍍錫銅導線 Tinned copper lead wire （注：可按要求提供 CP 線引腳） | 3 |

## CAD (KiCad official)

- Symbol: `RD 1`
- Footprint: `Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal`
- 3D model: R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal (KiCad packages3D, STEP)

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TyoHM datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588888642944684032) (11 pp, sha256 `fc7d5f9589975af0`, retrieved 2026-11-06, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/rd-1-datasheet.pdf)

## Other parts in this family

This page is **RD 1/4W 1M J T/B A1**. These part numbers share its family name but are different parts (another package, rating or grade), each with its own page:

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- RD 1/2W 820R J T/B A1
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- RD 1/2WS 10K J T/B A1
- RD 1/2WS 10R J T/B A1
- RD 1/2WS 180K J T/B A1
- RD 1/2WS 1M J T/B A1
- RD 1/2WS 20R J T/B
- RD 1/2WS 2K J T/B A1
- RD 1/2WS 2M2 J T/B A1
- RD 1/2WS 2R2 J T/B A1
- RD 1/2WS 330R J T/B A1
- RD 1/2WS 360R J T/B A1
- RD 1/2WS 39R J T/B A1
- RD 1/2WS 470R J T/B A1
- RD 1/2WS 5K1 J T/B A1
- RD 1/2WS 680R J T/B A1
- RD 1/2WS 750R J T/B A1
- RD 1/4W 100K J T/B A1
- RD 1/4W 100R J T/B A1
- RD 1/4W 10M J T/B A1
- RD 1/4W 10R J T/B A1
- RD 1/4W 11K J T/B A1
- RD 1/4W 120R J T/B A1
- RD 1/4W 12K J T/B A1
- RD 1/4W 12R J T/B A1
- RD 1/4W 150K J T/B A1
- RD 1/4W 150R J T/B A1
- RD 1/4W 15K J T/B A1
- RD 1/4W 180R J T/B A1
- RD 1/4W 18K J T/B A1
- RD 1/4W 18R J T/B A1
- RD 1/4W 1K2 J T/B A1
- RD 1/4W 1K3 J T/B A1
- RD 1/4W 1K5 J T/B A1
- RD 1/4W 1K8 J T/B A1
- RD 1/4W 1R J T/B A1
- RD 1/4W 200K J T/B A1
- RD 1/4W 200R J T/B A1
- RD 1/4W 20K J T/B A1
- RD 1/4W 20R J T/B A1
- RD 1/4W 220K J T/B A1
- RD 1/4W 220R J T/B A1
- RD 1/4W 22K J T/B A1
- RD 1/4W 240R J T/B A1
- RD 1/4W 270R J T/B
- RD 1/4W 270R J T/B A1
- RD 1/4W 27K J T/B A1
- RD 1/4W 27R J T/B A1
- RD 1/4W 2K J T/B A1
- RD 1/4W 2K2 J T/B A1
- RD 1/4W 2K4 J T/B A1
- RD 1/4W 2K7 J T/B A1
- RD 1/4W 2M J T/B A1
- RD 1/4W 2R J T/B A1
- RD 1/4W 2R2 J T/B A1
- RD 1/4W 2R4 J T/B A1
- RD 1/4W 300R J T/B A1
- RD 1/4W 30K J T/B A1
- RD 1/4W 30R J T/B A1
- RD 1/4W 330K J T/B
- RD 1/4W 33K J T/B A1
- RD 1/4W 33R J T/B A1
- RD 1/4W 36K J T/B A1
- RD 1/4W 36R J T/B A1
- RD 1/4W 390R J T/B A1
- RD 1/4W 39R J T/B
- RD 1/4W 3K J T/B A1
- RD 1/4W 3K3 J T/B A1
- RD 1/4W 3K6 J T/B A1
- RD 1/4W 3K9 J T/B A1
- RD 1/4W 3R6 J T/B A1
- RD 1/4W 430R J T/B A1
- RD 1/4W 43K J T/B A1
- RD 1/4W 470R J T/B A1
- RD 1/4W 47K J T/B A1
- RD 1/4W 47R J T/B A1
- RD 1/4W 4K7 J T/B A1
- RD 1/4W 4R7 J T/B A1
- RD 1/4W 510K J T/B A1
- RD 1/4W 510R J T/B A1
- RD 1/4W 51K J T/B A1
- RD 1/4W 51R J T/B A1
- RD 1/4W 560K J T/B A1
- RD 1/4W 560R J T/B A1
- RD 1/4W 56K J T/B A1
- RD 1/4W 5K1 J T/B A1
- RD 1/4W 5K6 J T/B A1
- RD 1/4W 5M1 J T/B A1
- RD 1/4W 5M6 J T/B A1
- RD 1/4W 62R J T/B A1
- RD 1/4W 680K J T/B A1
- RD 1/4W 680R J T/B A1
- RD 1/4W 68K J T/B A1
- RD 1/4W 68R J T/B A1
- RD 1/4W 6K2 J T/B A1
- RD 1/4W 6K8 J T/B A1
- RD 1/4W 6R8 J T/B A1
- RD 1/4W 75K J T/B A1
- RD 1/4W 75R J T/B A1
- RD 1/4W 7K5 J T/B A1
- RD 1/4W 7R5 J T/B A1
- RD 1/4W 820K J T/B A1
- RD 1/4W 82R J T/B A1
- RD 1/4W 8K2 J T/B A1
- RD 1/4W 91R J T/B A1
- RD 1/4WS 10R J T/B
- RD 1/4WS 200R J T/B
- RD 1/8W 10K J T/B
- RD 1/8W 10R J T/B
- RD 1/8W 12R J T/B
- RD 1/8W 1K2 J T/B A1
- RD 1/8W 33K J T/B A1
- RD 1/8W 39K J T/B
- RD 1/8W 39R J T/B
- RD 1/8W 47R J T/B
- RD 1/8W 5K1 J T/B