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1SMA5919BT3G-MS

Public Made by Adom

by adom

MSKSEMI Zener Diodes, SMA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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1SMA5919BT3G-MS

MSKSEMI · Zener Diodes · SMA

1SMA5919BT3G-MS from MSKSEMI, in a SMA. 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 K passive Cathode, marked by the molded polarity notch or cathode band; it goes positive in zener regulation, where the 1SMA5919B has VZ 5.6 V nominal (5.32 to 5.88 V) at IZT = 66.9 mA.
2 A passive Anode, the end opposite the cathode band; forward voltage is 1.2 V max at IF = 200 mA.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SMA
Category Diodes
Pins 2

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Zener Voltage VZ 5.32 5.6 5.88 V @ IZT = 66.9 mA, TA = 25°C 3
Zener Tolerance -5 5 % B suffix: tolerance of ±5% 3
Zener Test Current IZT 66.9 mA Test current for VZ and ZZT 3
Maximum Zener Impedance ZZT 2 Ω @ IZT = 66.9 mA 3
Maximum Zener Impedance ZZK 250 Ω @ IZK = 1.0 mA 3
Reverse Leakage Current IR 2.5 μA @ VR = 3.0 V 3
Maximum DC Zener Current IZM 268 mA 3
Forward Voltage VF 1.2 V @ IF = 200 mA, all types 3
DC Power Dissipation PD 1.5 W TL = 75°C, zero lead length, 1 in square copper pad FR-4 2
Derating above 75°C 20 mW/°C TL > 75°C 2
DC Power Dissipation PD 0.5 W TA = 25°C, FR-4 board, minimum recommended footprint 2
Derating above 25°C 4 mW/°C TA > 25°C 2
Operating and Storage Temperature Range TJ, Tstg -65 150 °C 2
Thermal Resistance, Junction-to-Lead RθJL 50 °C/W 2
Thermal Resistance, Junction-to-Ambient RθJA 250 °C/W FR-4 board, minimum recommended footprint 2

CAD (KiCad official)

  • Symbol: 1SMA5919BT3G-MS
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA (KiCad packages3D, STEP)
  • 3D model files: 1sma5919bt3g-ms-etched.step / 1sma5919bt3g-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma5919bt3g-ms.step / 1sma5919bt3g-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (7 pp, sha256 84b58db054664c6f, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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