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HT6873B5SPNR
Public Made by Adomby adom
Jiaxing Heroic Elec Tech HT6873 Audio Power OpAmps, SOP-8. Pinout extracted from 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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Contents
README
markdownHT6873B5SPNR
Jiaxing Heroic Elec Tech HT6873 · Audio Power OpAmps · SOP-8
HT6873B5SPNR from Jiaxing Heroic Elec Tech HT6873, in a SOP-8. 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 | CTRL | input | Shutdown and ACF mode control terminal. Voltage on CTRL selects operating mode: ≥2.00 V = ACF-Off, 1.55-1.85 V = ACF-1 (~3% max THD+N), 1.10-1.40 V = ACF-2 (~10% max THD+N), and ≤0.30 V = Shutdown. Typically driven from VDD via a switch with an external pull-down resistor (RPD). |
| 2 | BYPASS | passive | Analog reference / mid-supply bypass terminal. Nominal voltage is VDD/2. Bypass to GND with a 1 µF capacitor (CB) for PSRR and low-noise performance. |
| 3 | IN- | input | Negative differential audio input. AC-couple through CIN (1 µF) and series RIN (12 kΩ) to the source (or to ground for single-ended input). |
| 4 | IN+ | input | Positive differential audio input. AC-couple through CIN (1 µF) and series RIN (12 kΩ) to the audio source. Voltage gain Av = 25.5 dB with RIN = 12 kΩ. |
| 5 | OUT+ | output | Positive Class-D BTL output. Connects directly to one speaker terminal (filter-less). Switching carrier is ~470 kHz PWM. |
| 6 | VDD | power_in | Power supply input. Recommended 2.5 V to 6 V (typ. 5 V); absolute max 6.5 V. Decouple with 220 µF (CS2) bulk and 1 µF (CS1) ceramic to GND close to the pin. |
| 7 | GND | power_in | Device ground / VSS. Common return for power supply, input coupling, and CTRL pull-down. |
| 8 | OUT- | output | Negative Class-D BTL output. Connects directly to the other speaker terminal (filter-less). Together with OUT+ forms the bridge-tied load driving the speaker. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiaxing Heroic Elec Tech HT6873 |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
HT6873B5SPNTHT6873B5SPNRHT6873B5SPETHT6873B5SPER
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power Supply Voltage | VDD | 2.5 | 5 | 6 | V | 5 | |
| Operating Ambient Temperature | Ta | -30 | 25 | 85 | ℃ | 5 | |
| Power supply terminal voltage range | VDD | -0.3 | 6.5 | V | 5 | ||
| Input terminal voltage range (IN+, IN-, BYPASS, CTRL) | VIN | -0.3 | V | min printed as VSS-0.3 with VSS=0V; max printed as VDD+0.3 (not numeric) | 5 | ||
| Operating Ambient Temperature | TA | -40 | 85 | ℃ | 5 | ||
| Junction Temperature | TJ | -40 | 150 | ℃ | 5 | ||
| Storage Temperature | TSTG | -50 | 165 | ℃ | 5 | ||
| ACF-Off mode threshold voltage for terminal CTRL | VMOD1 | 2 | V | 5 | |||
| ACF-1 mode threshold voltage for terminal CTRL | VMOD2 | 1.55 | 1.85 | V | 5 | ||
| ACF-2 mode threshold voltage for terminal CTRL | VMOD3 | 1.1 | 1.4 | V | 5 | ||
| SD mode threshold voltage for terminal CTRL | VMOD4 | 0.3 | V | 5 | |||
| Quiescent current | IDD | 8 | 205 | mA | VDD=5V, no load, no signal input | 5 | |
| Output offset voltage | VOS | -10 | 5 | 10 | mV | 6 | |
| Frequency characteristics | fRES | -3 | 1 | dB | CIN=0.1µF, f=100Hz~20kHz | 6 | |
| ACF maximum attenuation gain | Aa | -10 | 0 | dB | 6 | ||
| Internal CTRL pull-down resistor tolerance | -10 | 10 | % | 200kΩ(±10%) resistor between CTRL and GND | 11 | ||
| Load Impedance | RL | 4 | Ω | 5 | |||
| Thermal resistance junction-to-ambient (SOP8) | θJA | 139 | ℃/W | SOP8 | 5 | ||
| Derating factor (SOP8) | 7.2 | mW/℃ | SOP8, derating factor measured with JEDEC Low-K board | 5 | |||
| Power dissipation (SOP8) | 899 | mW | TA≤25℃ | 5 | |||
| Power dissipation (SOP8) | 576 | mW | TA=70℃ | 5 | |||
| Power dissipation (SOP8) | 468 | mW | TA=85℃ | 5 | |||
| VDD power supply start-up threshold voltage | VUVLH | 2.2 | V | 5 | |||
| VDD power supply shut-down threshold voltage | VUVLL | 2 | V | 5 | |||
| Consumption current in Shutdown mode (AVDD+PVDD) | ISD | 0.1 | µA | CTRL=VSS, Ta=25℃ | 5 | ||
| Output Power | PO | 3.5 | W | RL=4Ω, VDD=5V, f=1kHz, THD+N=10% | 6 | ||
| Output Power | PO | 1.9 | W | RL=4Ω, VDD=3.7V | 6 | ||
| Total Harmonic Distortion Plus Noise (BW: 20kHz) | THD+N | 0.1 | % | RL=4Ω, PO=1W, f=1kHz | 6 | ||
| Output Noise | VN | 60 | µVrms | f=20Hz~20kHz, A-Filter, Av=18dB | 6 | ||
| Signal/Noise Ratio (BW: 20kHz A-Filter) | SNR | 95 | dB | A-Filter, Av=18dB | 6 | ||
| Power supply rejection ratio | PSRR | -75 | dB | Ripple Wave Vpp=200mV, f=1kHz | 6 | ||
| Efficiency | η | 86 | % | VDD=5V, RL=8Ω, PO=1W | 6 | ||
| Voltage Gain | Av0 | 25.5 | dB | RIN=12 kΩ | 6 | ||
| Start-up time | tSTUP | 240 | ms | 6 | |||
| ACF-1 Attack time | tAT1 | 72 | ms | VDD=3.6V, g=10dB | 6 | ||
| ACF-1 Release time | tRL1 | 720 | ms | VDD=3.6V, g=10dB | 6 | ||
| ACF-2 Attack time | tAT2 | 20 | ms | VDD=3.6V, g=10dB | 6 | ||
| ACF-2 Release time | tRL2 | 450 | ms | VDD=3.6V, g=10dB | 6 | ||
| Wake-up mode setting time | tWK | 35 | ms | 6 | |||
| Shutdown setting time | tSD | 50 | ms | Ta(Min.)= -20℃ | 6 | ||
| Shutdown setting time | tSD | 80 | ms | Ta(Min.)= -30℃ | 6 | ||
| Each mode setting time (Except shutdown) | tMOD | 0.1 | ms | 6 | |||
| Carrier clock frequency | fPWM | 470 | kHz | 6 | |||
| Internal CTRL pull-down resistor | 200 | kΩ | CTRL to GND, nominal | 11 |
CAD (KiCad official)
- Symbol:
HT6873B5SPNR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ht6873b5spnr-etched.step/ht6873b5spnr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht6873b5spnr.step/ht6873b5spnr.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ht6873b5spnr.step |
122 KB | You want the bare part, or you mark your own boards. |
ht6873b5spnr-etched.step |
2.7 MB | You want the part with HT6873B5SPNR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 648 faces against 147 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: Jiaxing Heroic Elec Tech HT6873 datasheet (16 pp, sha256
1e59a0341bfd7353, 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).