T1820B

Mysentech · Temperature Sensors · TO-92S

T1820B from Mysentech, in a TO-92S. 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	GND	power_in	Ground reference pin for the sensor (地), listed in the page 3 pin table for the TO92S package.
2	DQ	bidirectional	Single-wire (One Wire) digital bus pin, open-drain with an external pull-up of about 4.7 kΩ (1 kΩ to 10 kΩ allowed per the electrical table), with VIL max 0.3VDD and VIH min 0.7VDD, and VOL max 0.4 V at IOL = -3 mA.
3	VDD	power_in	Supply pin with a stated operating range of 1.8 V to 5.5 V (3.3 V typical), and 3.3 V or higher is recommended for long cables or multi-drop bus operation.

Key specifications

Parameter	Value
Manufacturer	Mysentech
Package	TO-92S
Category	Sensors
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Temperature error (T1820B, 0℃ to +60℃)	tERR	-0.5		0.5	℃	0℃ to +60℃	4
Supply voltage	VDD	1.8	3.3	5.5	V		7
Supply voltage (absolute maximum)	VDD	-0.3		6	V		7
Maximum voltage on pins		-0.3		6	V		7
Input current on pins		-100		100	mA		7
Operating temperature range		-110		160	℃		7
Storage temperature range		-103		153	℃		7
ESD HBM (human body model)		-8		8	kV		7
Output low voltage	VOL			0.4	V	IOL = -3 mA	8
Input leakage current	IIN	-0.1		0.1	uA		8
Pull-up resistor	Rup	1	4.7	10	kΩ		8
EEPROM write (erase/program) time	tWR			40	ms		8
EEPROM endurance	NEEWR			1000	次	-40°C to +125°C	8
Measurement temperature range		-103		153	℃		4
Single-shot time slot length	tSLOT	60		120	µs	见备注	23
Recovery time	tREC	1		5	µs	见备注 1	23
Write 0 low time	tLOW0	60	60	120	µs	见备注	23
Write 1 low time	tLOW1	1	5	15	µs	见备注	23
Read data valid time	tRDV	5		15	µs	见备注	23
Reset low time	tRSTL	480		960	µs	见备注	23
Presence detect high time	tPDHIGH	15	30	60	µs	见备注	23
Presence detect low time	tPDLOW	60	115	240	µs	见备注	23
Parasitic mode MCU-side VDD supply range	VDD	2.5		5.5	V	寄生模式，MCU端VDD	13
Standby current, single-shot measurement mode	IDD		0.01		uA	空闲状态（单次测量模式）	7
Standby current, periodic measurement mode	IDD		50		uA	空闲状态（周期测量模式）	8
Peak current during measurement	IDD		360		uA	测量时的电流	8
Average current, single-shot (AVG=8, 1 measurement/s)	IDD		2		uA	单次测量模式，(AVG=8，1 次测量/s)	8
EEPROM data retention	tEEDR		10		年	-55°C to +125°C	8

CAD (KiCad official)

Symbol: T1820B
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92S (KiCad packages3D, STEP)
3D model files: t1820b-etched.step / t1820b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t1820b.step / t1820b.glb are the bare package body.

Provenance

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

Datasheet: Mysentech datasheet (27 pp, sha256 87a9b25ba874d01d, retrieved 2026-10-17, 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 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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

# T1820B

**Mysentech** · Temperature Sensors · TO-92S

T1820B from Mysentech, in a TO-92S. 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 | GND | power_in | Ground reference pin for the sensor (地), listed in the page 3 pin table for the TO92S package. |
| 2 | DQ | bidirectional | Single-wire (One Wire) digital bus pin, open-drain with an external pull-up of about 4.7 kΩ (1 kΩ to 10 kΩ allowed per the electrical table), with VIL max 0.3*VDD and VIH min 0.7*VDD, and VOL max 0.4 V at IOL = -3 mA. |
| 3 | VDD | power_in | Supply pin with a stated operating range of 1.8 V to 5.5 V (3.3 V typical), and 3.3 V or higher is recommended for long cables or multi-drop bus operation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Mysentech |
| Package | TO-92S |
| Category | Sensors |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Temperature error (T1820B, 0℃ to +60℃) | tERR | -0.5 |  | 0.5 | ℃ | 0℃ to +60℃ | 4 |
| Supply voltage | VDD | 1.8 | 3.3 | 5.5 | V |  | 7 |
| Supply voltage (absolute maximum) | VDD | -0.3 |  | 6 | V |  | 7 |
| Maximum voltage on pins |  | -0.3 |  | 6 | V |  | 7 |
| Input current on pins |  | -100 |  | 100 | mA |  | 7 |
| Operating temperature range |  | -110 |  | 160 | ℃ |  | 7 |
| Storage temperature range |  | -103 |  | 153 | ℃ |  | 7 |
| ESD HBM (human body model) |  | -8 |  | 8 | kV |  | 7 |
| Output low voltage | VOL |  |  | 0.4 | V | IOL = -3 mA | 8 |
| Input leakage current | IIN | -0.1 |  | 0.1 | uA |  | 8 |
| Pull-up resistor | Rup | 1 | 4.7 | 10 | kΩ |  | 8 |
| EEPROM write (erase/program) time | tWR |  |  | 40 | ms |  | 8 |
| EEPROM endurance | NEEWR |  |  | 1000 | 次 | -40°C to +125°C | 8 |
| Measurement temperature range |  | -103 |  | 153 | ℃ |  | 4 |
| Single-shot time slot length | tSLOT | 60 |  | 120 | µs | 见备注 | 23 |
| Recovery time | tREC | 1 |  | 5 | µs | 见备注 1 | 23 |
| Write 0 low time | tLOW0 | 60 | 60 | 120 | µs | 见备注 | 23 |
| Write 1 low time | tLOW1 | 1 | 5 | 15 | µs | 见备注 | 23 |
| Read data valid time | tRDV | 5 |  | 15 | µs | 见备注 | 23 |
| Reset low time | tRSTL | 480 |  | 960 | µs | 见备注 | 23 |
| Presence detect high time | tPDHIGH | 15 | 30 | 60 | µs | 见备注 | 23 |
| Presence detect low time | tPDLOW | 60 | 115 | 240 | µs | 见备注 | 23 |
| Parasitic mode MCU-side VDD supply range | VDD | 2.5 |  | 5.5 | V | 寄生模式，MCU端VDD | 13 |
| Standby current, single-shot measurement mode | IDD |  | 0.01 |  | uA | 空闲状态（单次测量模式） | 7 |
| Standby current, periodic measurement mode | IDD |  | 50 |  | uA | 空闲状态（周期测量模式） | 8 |
| Peak current during measurement | IDD |  | 360 |  | uA | 测量时的电流 | 8 |
| Average current, single-shot (AVG=8, 1 measurement/s) | IDD |  | 2 |  | uA | 单次测量模式，(AVG=8，1 次测量/s) | 8 |
| EEPROM data retention | tEEDR |  | 10 |  | 年 | -55°C to +125°C | 8 |

## CAD (KiCad official)

- Symbol: `T1820B`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92S (KiCad packages3D, STEP)
- 3D model files: `t1820b-etched.step` / `t1820b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `t1820b.step` / `t1820b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Mysentech datasheet](docs/t1820b-datasheet.pdf) (27 pp, sha256 `87a9b25ba874d01d`, retrieved 2026-10-17, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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/t1820b-datasheet.pdf)