STA516BETR - 250W Class D Power Stage | STMicroelectronics
Référence : STA516BETR ✓ ActifSTA516BETR Présentation
A digital audio power amplifier is a semiconductor device that converts high-speed digital or analog control signals into a switching power stage that drives loudspeaker loads. Within the broader hierarchy, the STA516BETR belongs to the Class D amplifier, audio power amplifier, power-management semiconductor, and integrated-circuit categories. Its primary function is efficient audio power conversion rather than low-level signal amplification, making it appropriate for professional audio, home cinema, and high-power distributed-speaker systems.
Key characteristics include Class D operation, support for 10 V to 60 V supply voltages, a stated 250 W output-power rating, 7.5 A output current, and a 200 mOhm output resistance. Manufacturer-related listings identify the package as PowerSO-36 with an exposed thermal pad, while distribution records identify a tape-and-reel packing format with a standard quantity of 600 units. The large exposed pad provides the primary path for heat removal during high-power operation.
The STA516BETR is a power-conversion stage rather than a complete audio system controller. In a typical design, an audio codec or digital audio processor produces the required control signals, and the STA516BETR supplies the high-current switching output. External inductors, capacitors, MOSFETs, gate drivers, and passive networks may be required according to the selected modulation and filtering topology. Its high voltage and current capability makes thermal design and output-network implementation the central engineering considerations.
Typical applications include professional powered speakers, cinema amplifiers, subwoofer amplifiers, high-powered home-theater systems, and industrial audio equipment. Mono operation can concentrate available power into one channel, while stereo operation can drive two speaker channels. The stated 480 W into 3 ohms in mono configurations highlights the device's suitability for demanding low-impedance speaker loads when the complete amplifier topology, magnetic components, PCB copper, and cooling system are designed accordingly.
Thermal management is essential because Class D power stages can dissipate substantial heat during high-output operation. The PowerSO-36 exposed pad should be connected to a substantial thermal copper area and, where required, an external heat sink. The power rating cannot be treated independently of load impedance, switching frequency, board construction, ambient temperature, and heat-sink performance.
This page organizes the core electrical ratings, package data, sourcing guidance, application fit, and engineering trade-offs for the STA516BETR. It also distinguishes device-level ratings from complete amplifier performance, helping engineers plan the power stage, thermal structure, output network, and procurement strategy as one integrated design.
Alternatives de remplacement direct pour STA516BETR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesSTA516BETR Valeurs maximales et caractéristiques électriques
| Device Type | Class D digital audio power amplifier |
| Configuration de sortie | Mono or stereo |
| Rated Output Power | 250 W |
| Mono Output Power | 480 W at 3 ohm |
| Supply Voltage Range | 10 V to 60 V |
| Maximum Stated Supply Voltage | 65 V |
| Output Current | 7.5 A |
| Output Resistance | 200 mOhm |
| Boîtier | PowerSO-36 |
| Package Pin Count | 36 pins |
| Type de montage | Surface mount |
| Thermal Pad | Exposed pad |
| Plage de température de fonctionnement | 0 °C to +90 °C |
| Packaging Type | Tape and reel |
| Standard Package Quantity | 600 units |
| Statut RoHS | RoHS-compliant |
Guide de configuration des broches du STA516BETR 600 units
Configuration des broches du STA516BETR (boîtier 600 units). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour STA516BETR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STA516BETR convient pour 6 applications: Professional Powered Speaker, Cinema Multi-Channel Amplifier, High-Power Subwoofer Amplifier, Home-Theater Power Amplifier, Industrial Audio Amplifier, Distributed Speaker Power Node.
Professional Powered Speaker
The STA516BETR is well matched to professional powered-speaker power stages requiring substantial Class D output capability in a compact surface-mount device. Its stated 250 W per-channel rating, 7.5 A output-current capability, and 10 V to 60 V supply range provide a strong starting point for high-output monitor, main PA, or compact line-array systems. The amplifier design should place the device over substantial PCB copper or an approved heat sink, then use suitable gate-drive, switching, and output-filter networks. Continuous output depends on load impedance, modulation method, ambient temperature, and cooling, so the 250 W figure should not be treated independently of the completed thermal structure.
Recommandé
Cinema Multi-Channel Amplifier
The STA516BETR can serve as the high-power stage in a multi-channel cinema amplifier because it supports mono or stereo configurations and operates from a 10 V to 60 V supply. This flexibility allows separate channels to be allocated according to speaker impedance and amplifier topology while retaining a common control architecture. A practical implementation requires careful synchronization of the switching stages, differential or common-mode filtering, channel-to-channel gain planning, and low-noise audio conversion upstream. Thermal design is especially important when several high-power channels operate simultaneously, because adjacent amplifiers and the enclosure can raise the effective ambient temperature beyond the 0 °C to +90 °C device range.
Recommandé
High-Power Subwoofer Amplifier
The STA516BETR is a strong candidate for a subwoofer power stage because its listed 480 W mono capability at 3 ohms addresses the high current and low impedance commonly encountered in bass systems. Its 7.5 A output-current rating and 200 mOhm output resistance should be evaluated together with the selected modulation scheme, external inductors, and feedback network. Speaker protection remains essential: use appropriate DC blocking, overcurrent detection, thermal shutdown, and robust output filtering. The 10 V to 60 V supply range supports conventional high-voltage audio power stages, while the exposed PowerSO-36 pad permits direct integration with a carefully engineered thermal copper structure.
Recommandé
Home-Theater Power Amplifier
The STA516BETR is appropriate for a high-output home-theater amplifier where separate power channels drive demanding loudspeakers from a common audio conversion system. Its mono or stereo flexibility supports mixed configurations, such as bridge-connected front channels and dedicated mono amplification for a center or subwoofer. The design should prioritize low-noise signal conversion, synchronized power-stage control, stable feedback, and an output network matched to the selected speaker impedance. Because the device can operate at 7.5 A and dissipate meaningful heat at high output, the PCB copper area, heat sink, airflow path, and enclosure temperature must be validated under sustained playback rather than short-duration peak testing.
Recommandé
Industrial Audio Amplifier
The STA516BETR can support industrial audio equipment requiring a high-output loudspeaker drive stage with a 10 V to 60 V operating range. Potential systems include public-address distribution, industrial monitoring stations, and compact powered directional speakers. Industrial use requires careful attention to supply transients, temperature rise, acoustic safety limits, and long-term reliability under continuous operation. The 0 °C to +90 °C operating range supports many indoor environments, but the thermal design must account for the enclosure temperature and nearby heat sources. A robust implementation should include current limiting, fault indication, controlled shutdown, and output filtering sized for the speaker wiring and EMC environment.
Recommandé
Distributed Speaker Power Node
A distributed-speaker node using the STA516BETR can deliver high audio power locally while reducing dependence on centralized amplification. The device's 250 W per-channel capability and configurable mono or stereo operation suit high-impedance and low-impedance speaker networks when the output topology, passive network, and protection scheme are designed for the exact load. A 48 V or 60 V class power bus can suit the stated supply range, but transient suppression and isolation depend on the installation environment. Thermal conduction through the exposed pad and controlled airflow are central to sustaining output in a sealed enclosure, while an audio DAC or processor provides the digital source feeding the power stage.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STA516BETR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Package | PowerSO-36 |
| Brand | STMicroelectronics |
| Device Type | Class D digital audio power amplifier |
| Rated Output Power | 250 W |
| Mono Output Power | 480 W at 3 ohm |
| Supply Voltage Range | 10 V to 60 V |
| Output Current | 7.5 A |
| Output Resistance | 200 mOhm |
| Operating Temperature | 0 °C to +90 °C |
| Output Configuration | Mono or stereo |
Principaux différenciateurs
- High-power Class D capability in a 36-pin surface-mount package (vs STA516B)
- Explicit 7.5 A high-current capability (vs STA516B)
- Wide operating supply range for high-power audio buses (vs STA516B)
Notes de conception
Treat the exposed PowerSO-36 pad as the primary thermal interface and connect it to a continuous copper region rather than relying on individual vias. The available records do not provide a package thermal-resistance value, so determine the junction-temperature rise through board-level thermal analysis using actual copper area, via count, heat-sink geometry, airflow, and ambient temperature. Validate sustained output because a 250 W or 480 W capability depends on the completed power topology and cooling system, not only the semiconductor rating.
Keep high-current switching loops compact and keep the power-stage nodes away from the audio input, error amplifier, and feedback-trace area. Use short, wide connections for supply and output paths, place input and decoupling components close to their relevant pins, and maintain the feedback traces away from switching nodes. The exact PowerSO-36 land pattern and exposed-pad connection must be taken from the manufacturer package drawing rather than inferred from generic 36-lead dimensions.
Do not equate the 250 W device rating with guaranteed continuous amplifier output. Output power depends on supply voltage, load impedance, modulation method, switching losses, component tolerances, and thermal conditions. Also distinguish the 60 V operating range from the separately listed 65 V maximum rating, and verify absolute maximum limits, transient tolerances, pin functions, and protection thresholds in the manufacturer datasheet before selecting capacitors, inductors, MOSFETs, and supply components.
Class D output stages generate high-amplitude, high-frequency switching energy. Use the application-recommended output filter and keep it close to the power stage and speaker connector. Provide low-impedance local supply bypassing and investigate radiated or conducted emissions early in layout because long power loops and unbalanced speaker wiring can act as antennas. The grounding strategy should separate noisy power return paths from the audio reference without defeating the high-current return area.
Informations de conformité
RoHS-compliant status is identified in the available product records. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status require confirmation from the manufacturer or current compliance documentation.