component
BAL99
Public Made by Adomby adom
Nexperia Switching Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBAL99
Nexperia · Switching Diodes · SOT-23
BAL99 from Nexperia, in a SOT-23. 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 | n.c. | unconnected | Pin 1 is not connected internally and is listed as n.c. in the pinning table. |
| 2 | K | passive | Cathode of the high-speed switching diode; the device limits are a continuous reverse voltage (VR) of max. 70 V and a forward current (IF) of max. 215 mA. |
| 3 | A | passive | Anode of the high-speed switching diode; the device limits are a continuous reverse voltage (VR) of max. 70 V and a forward current (IF) of max. 215 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-23 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak reverse voltage | VRRM | 70 | V | 2 | |||
| Reverse voltage | VR | 70 | V | 2 | |||
| Forward current | IF | 215 | mA | footnote [1]: device mounted on FR4 PCB, single-sided copper, tin-plated, standard footprint | 2 | ||
| Non-repetitive peak forward current | IFSM | 4 | A | tp = 1 µs; square wave; Tj(init) = 25 °C | 2 | ||
| Non-repetitive peak forward current | IFSM | 1 | A | tp = 1 ms; square wave; Tj(init) = 25 °C | 2 | ||
| Non-repetitive peak forward current | IFSM | 0.5 | A | tp = 1000 ms; square wave; Tj(init) = 25 °C | 2 | ||
| Repetitive peak forward current | IFRM | 500 | mA | 2 | |||
| Total power dissipation | Ptot | 250 | mW | Tamb = 25 °C; footnote [1]: device mounted on FR4 PCB, single-sided copper, tin-plated, standard footprint | 2 | ||
| Junction temperature | Tj | 150 | °C | 2 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 2 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 500 | K/W | in free air; footnote [1]: device mounted on FR4 PCB, single-sided copper, tin-plated, standard footprint | 3 | ||
| Thermal resistance from junction to solder point | Rth(j-sp) | 360 | K/W | 3 | |||
| Forward voltage | VF | 715 | mV | IF = 1 mA; Tj = 25 °C | 3 | ||
| Forward voltage | VF | 855 | mV | IF = 10 mA; Tj = 25 °C | 3 | ||
| Forward voltage | VF | 1 | V | IF = 50 mA; Tj = 25 °C | 3 | ||
| Forward voltage | VF | 1.25 | V | IF = 150 mA; Tj = 25 °C | 3 | ||
| Reverse current | IR | 30 | nA | VR = 25 V; Tj = 25 °C | 3 | ||
| Reverse current | IR | 1 | µA | VR = 70 V; Tj = 25 °C | 3 | ||
| Reverse current | IR | 30 | µA | VR = 25 V; Tj = 150 °C | 3 | ||
| Reverse current | IR | 50 | µA | VR = 70 V; Tj = 150 °C | 3 | ||
| Diode capacitance | Cd | 1.5 | pF | VR = 0 V; f = 1 MHz; Tj = 25 °C | 3 | ||
| Reverse recovery time | trr | 4 | ns | IF = 10 mA; IR = 10 mA; RL = 100 Ω; IR(meas) = 1 mA; Tj = 25 °C | 3 | ||
| Peak forward recovery voltage | VFRM | 1.75 | V | IF = 10 mA; tr = 20 ns; Tj = 25 °C | 3 |
CAD (KiCad official)
- Symbol:
BAL99 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bal99-etched.step/bal99-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bal99.step/bal99.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (9 pp, sha256
aa7bdc620b1aecc4, retrieved 2026-10-17, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).