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BL59S10

Public Made by Adom

by adom

BL Shanghai Belling Pressure Sensors, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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docs bl59s10: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
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bl59s10-etched.fit.json bl59s10: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bl59s10-etched.glb bl59s10: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bl59s10-etched.step bl59s10: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bl59s10.glb Publish 0.1.0 · Ray 2mo ago
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page.json bl59s10: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md bl59s10: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

BL59S10

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.

  • BL59A10
  • BL59S10

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl59s10.step / bl59s10.glb are 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).

Datasheet PDF