component
BL59S10
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BL Shanghai Belling Pressure Sensors, SOP-16. Datasheet-verified pinout, 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
markdownBL59S10
BL Shanghai Belling · Pressure Sensors · SOP-16
BL59S10 from BL Shanghai Belling, in a SOP-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 | C1 | passive | External capacitor connection for the voltage feedback amplifier. Together with C2 sets the amplifier gain used with the IR photodiode. |
| 2 | C2 | passive | External capacitor connection for the voltage feedback amplifier. Works with C1 to determine amplifier gain. |
| 3 | DETECT | input | Detecting input. Connects to a photodiode to supply a signal to the internal comparator for smoke detection. |
| 4 | STROBE | output | Strobe voltage output referenced to VDD. When output equals VDD-5V it enables other internal circuits. |
| 5 | VDD | power_in | Positive supply pin. Operating range 6V to 12V; average supply current ~12uA. |
| 6 | IRED | output | Pulse drive output signal for an external NPN transistor driving the IR photodiode/emitter. |
| 7 | I/O | bidirectional | Interconnect pin. Can tie together up to 40 detectors for auxiliary alarm, remote alarm, or auto-dialer functions. On-chip pull-down when used as input. |
| 8 | BRASS | output | Push-pull driver output to drive external buzzer for alarm and to indicate various operation states. Paired with SILVER for differential piezo drive. |
| 9 | SILVER | output | Push-pull driver output to drive external buzzer for alarm. Paired with BRASS to drive the piezoelectric buzzer in push-pull configuration. |
| 10 | FEEDBACK | input | Feedback terminal. Feeds the SILVER signal back into the push-pull output driver circuit input for resonant buzzer drive. |
| 11 | LED | output | Open-drain output that can drive an indicator LED directly to signal detector operation states. |
| 12 | OSC | input | Oscillator input. Connects to external R and C which set the internal oscillator frequency (~9.5-11.5ms period with recommended R2=10M, C3=1500pF). |
| 13 | R1 | passive | External R and C connecting terminal. Sets the IRED output pulse period (Tf = 0.6931 * R1 * C3, typical R1 = 100k). |
| 14 | VSS | power_in | Negative supply / ground reference pin (GND). |
| 15 | LOW-SUPPLY | input | Low-voltage detecting input. Connected to an external resistor divider between VDD and LED to set the low-supply alarm threshold (typical trip 6.5-7.8V at VIN=VDD/3). |
| 16 | TEST | input | Test terminal. Normally pulled low by an internal pull-down; driving it high causes the IC to enter a simulated-smoke condition. Floats back to VSS via the pull-down. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOP-16 |
| Category | Sensor |
| Pins | 16 |
Ordering variants
Same part, different packaging or reel option.
BL59A10BL59S10
CAD (KiCad official)
- Symbol:
BL59S10 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
bl59s10-etched.step/bl59s10-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl59s10.step/bl59s10.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (12 pp, sha256
f4ede66631074c00, retrieved 2026-08-17, tier: lcsc) - 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).