Caution: Exceeding these values will damage the IC.
| Parameter | Symbol | Rating | Unit | |-----------|--------|--------|------| | Maximum supply voltage (no signal) | VCC max | ±39 | V | | Maximum supply voltage (with signal) | VCC | ±35 | V | | Peak output current | I_O peak | 10 | A | | Power dissipation (per channel) | P_D | 50 | W | | Junction temperature | T_j | +150 | °C | | Storage temperature | T_stg | -40 to +125 | °C | | Thermal resistance (junction-to-case) | θ_j-c | 1.5 | °C/W |
Important note: The STK411210E requires a well-dimensioned heatsink. With a typical stereo music signal, a 1.5°C/W heatsink (or better) is recommended to keep the junction temperature below 125°C.
When working with electronic components, including the stk411-210E, it's essential to follow proper safety precautions:
The STK411-210E is a fantastic piece of audio history. It delivers warm, robust 50-watt stereo sound with minimal external components. While it is sensitive to heat and increasingly rare, a genuine unit used within the datasheet limits (±37V, 8Ω, good heatsink) will last for decades. stk411210e datasheet
Download the full PDF datasheet from: [Archive.org / Elektrotanya / OEM sites]
Disclaimer: This summary is for educational purposes. Always refer to the official Sanyo datasheet for critical design verification.
Since Sanyo discontinued the STK series, originals are scarce. Beware of cheap counterfeits from China (they often blow up immediately).
| Model | Power (approx) | Compatibility | | :--- | :--- | :--- | | STK411-210E | 50W | Original reference | | STK412-130 | 60W | Pin compatible (higher voltage) | | STK410-150 | 40W | Pin compatible (lower voltage) | Caution: Exceeding these values will damage the IC
Recommendation: If you cannot find a genuine STK411-210E (check the backplate for proper laser etching), consider building a discrete amplifier or use a modern module like the TDA7294 or LM3886, which are electrically similar but require PCB adapters.
The STK411-210E typically utilizes an 18-pin Single Inline Package (SIP).
| Pin No. | Function | Description | | :---: | :--- | :--- | | 1 | Input (Ch 1) | Audio Signal Input for Channel 1 | | 2 | NFB (Ch 1) | Negative Feedback input for Channel 1 | | 3 | Pre-GND | Ground for the pre-driver stage | | 4 | Pre-Vcc (-) | Negative Supply for pre-driver stage | | 5 | NFB (Ch 2) | Negative Feedback input for Channel 2 | | 6 | Input (Ch 2) | Audio Signal Input for Channel 2 | | 7 | Mute/Standby | Control pin for muting function | | 8 | Power GND | Ground for power output stage | | 9 | Output (Ch 2) | Speaker Output for Channel 2 | | 10 | Power Vcc (-) | Negative Power Supply for Ch 2 | | 11 | Power Vcc (+) | Positive Power Supply for Ch 2 | | 12 | Boot (Ch 2) | Bootstrap connection for Ch 2 | | 13 | NC | No Connection | | 14 | Boot (Ch 1) | Bootstrap connection for Ch 1 | | 15 | Power Vcc (+) | Positive Power Supply for Ch 1 | | 16 | Power Vcc (-) | Negative Power Supply for Ch 1 | | 17 | Output (Ch 1) | Speaker Output for Channel 1 | | 18 | Pre-Vcc (+) | Positive Supply for pre-driver stage |
(Note: Pinouts may vary slightly by revision. Always verify the specific footprint on the physical package metal casing.) Disclaimer: This summary is for educational purposes
For precise circuit design or repair work, having the original PDF is essential. You can typically find the STK411210E datasheet by searching through major electronics component distributors (like DigiKey, Mouser, or Rochester Electronics) or specialized audio repair forums.
Search Tip: If you cannot find the specific "E" revision datasheet, look for the STK4111 series family datasheet. These documents often cover the entire family, including the 210E variant, in a single file.
Have you worked with the STK411210E in a repair project? Let us know your experience in the comments below!
The datasheet will provide a diagram showing the pin layout of the stk411-210E. This is crucial for designing and building a circuit with the IC, as it shows where to connect power supply, audio inputs, and speakers.