DG201BDY-T1-E3 from Vishay, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	IN1	input	Digital control input for switch 1. TTL/CMOS compatible: VINL <= 0.8 V, VINH >= 2.4 V. For DG201B (normally-closed): logic 0 = switch ON, logic 1 = switch OFF.
2	D1	passive	Drain terminal of analog switch 1. Bidirectional analog signal path; RDS(on) typ 45 Ω. Analog signal range ±15 V with ±15 V supplies.
3	S1	passive	Source terminal of analog switch 1. Bidirectional analog signal path to D1 when switch is ON. Peak current 100 mA (pulsed), 30 mA continuous.
4	V-	power_in	Negative supply rail. Typically -15 V (dual supply) or 0 V (single supply). V+ to V- must not exceed 44 V. Operating range V+ to V- = 4.5 V to 44 V.
5	GND	power_in	Ground / logic reference. Maximum 25 V referenced to V-. Digital input thresholds are referenced to GND.
6	S4	passive	Source terminal of analog switch 4. Bidirectional analog signal path to D4 when switch is ON.
7	D4	passive	Drain terminal of analog switch 4. Bidirectional analog signal path; RDS(on) typ 45 Ω.
8	IN4	input	Digital control input for switch 4. TTL/CMOS compatible (VIL <= 0.8 V, VIH >= 2.4 V). Input current ±1 µA max.
9	IN3	input	Digital control input for switch 3. TTL/CMOS compatible (VIL <= 0.8 V, VIH >= 2.4 V).
10	D3	passive	Drain terminal of analog switch 3. Bidirectional analog signal path; RDS(on) typ 45 Ω.
11	S3	passive	Source terminal of analog switch 3. Bidirectional analog signal path to D3 when switch is ON.
12	NC	unconnected	No internal connection. Leave floating or tie to any convenient potential.
13	V+	power_in	Positive supply rail. Typically +15 V (dual supply) or up to +25 V (single supply). V+ to V- must not exceed 44 V. Positive supply current I+ 50 µA max.
14	S2	passive	Source terminal of analog switch 2. Bidirectional analog signal path to D2 when switch is ON.
15	D2	passive	Drain terminal of analog switch 2. Bidirectional analog signal path; RDS(on) typ 45 Ω.
16	IN2	input	Digital control input for switch 2. TTL/CMOS compatible (VIL <= 0.8 V, VIH >= 2.4 V).

Key specifications

Parameter	Value
Manufacturer	Vishay
Package	SOIC-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

DG201BDY-T1-E3
DG201BDY-T1-E3DY-E3
DG201BDY-T1-E3DJ
DG201BDY-T1-E3DJ-E3
DG201BDY-T1-E3DQ
DG201BDY-T1-E3DQ-E3
DG201BDY-T1-E3DQ-T1
DG201BDY-T1-E3DQ-T1-E3
DG201BDY-T1-E3AK

CAD (KiCad official)

Symbol: DG201BDY-T1-E3
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`dg201bdy-t1-e3.step`	217 KB	You want the bare part, or you mark your own boards.
`dg201bdy-t1-e3-etched.step`	2.8 MB	You want the part with `DG201BDY-T1-E3` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 701 faces against 267 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Vishay datasheet (15 pp, sha256 5524230437ec6ac9, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF