My Inquiry
My Account
STMicroelectronics STCC08RL
- Part No.:
- STCC08RL
- Manufacturer:
- STMicroelectronics
- Category:
- Power Management - Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
STCC08RL.pdf
- Description:
- IC DETECTOR AC SW FAILURE 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STCC08RL from STMicroelectronics is an AC switch failure-mode detector and AC power switch driver for appliance and mains-switch monitoring circuits. The IC drives ACS, ACST, and TRIAC power switches while providing MCU-readable failure detection for diode-mode failure, short-circuit failure, and open-switch failure in AC load control systems.
For engineers reviewing the STCC08RL datasheet, STCC08RL pinout, STCC08RL application, or STCC08RL equivalent, this IC is most relevant for home appliance safety monitoring, ACS / ACST / TRIAC gate drive, AC switch diagnostic feedback, zero-voltage synchronization, and MCU-based safety shutdown circuits requiring 3.3 V or 5 V compatible supply operation, SO-8 surface-mount assembly, and tape-and-reel production handling.
Technical Context
STCC08RL integrates a CMOS-compatible switch-drive input, a gate driver for low-IGT AC switches, an AC switch voltage-sense input, and an AVF diagnostic output. The G output can sink gate current for ACS, ACST, or TRIAC devices, while the RIG pin sets the gate-drive current with an external resistor referenced to GND.
The failure-detection section senses the AC switch voltage in both AC line polarities and reports status through the AVF output. With appropriate load and shunt configuration, the MCU can distinguish normal switch operation, diode-mode failure, short-circuit failure, and open-switch behavior, allowing appliance firmware to command a safe shutdown through a front-end relay or system-level protection path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | AC switch failure-mode detector and AC power switch driver for MCU-monitored mains-switch applications. |
| Compatible Power Switches | ACS, ACST, and TRIAC devices, especially low-gate-current AC switches used in appliance control circuits. |
| Supply Compatibility | 3.3 V and 5 V compatible supply operation for direct interface with common appliance microcontrollers. |
| Recommended VCC Range | 2.97 V to 5.5 V operating supply range, supporting 3.3 V and 5 V logic domains. |
| Gate Driver Current | G output provides up to 28 mA sink gate-drive current under recommended operating conditions. |
| Gate Drive Setting | RIG pin sets the AC switch gate current with an external resistor, allowing drive current to be adjusted for 5 mA or 10 mA IGT AC switch devices. |
| Input Control | IN is a CMOS-compatible logic input; Vin greater than the on-state threshold turns the AC switch drive on, while Vin below the off-state threshold turns it off. |
| Failure Detection | Detects diode-mode failure, short-circuit failure, and open AC switch failure in both AC line polarities. |
| Status Output | AVF is an open-collector active-low diagnostic output that can be read by an MCU input or routed through an optocoupler in insulated designs. |
| AC Sense Input | AC pin senses AC switch status through the external high-voltage detection resistor network. |
| Quiescent Current | 2 mA typical quiescent current with IN connected to GND. |
| Detection Threshold | AC detection threshold range listed from 82 µA to 236 µA. |
| EMC System Ratings | Application-oriented ratings include IEC 61000-4-2 ESD and IEC 61000-4-4 burst robustness when used with the recommended external network. |
| Package | SO-8 SMD package; STCC08RL is supplied in 13-inch tape-and-reel format with 2500-piece base quantity. |
| Thermal Resistance | 140°C/W junction-to-ambient thermal resistance for the SMD package condition. |
| Operating Temperature | -20°C to +85°C ambient operating range and -20°C to +125°C operating junction range. |
Pinout & Package
STCC08RL is supplied in an SO-8 surface-mount package. The 8-pin small-outline package provides a compact appliance-control footprint with separate MCU drive input, AVF diagnostic feedback, AC voltage-sense input, supply, gate-drive output, gate-current setting pin, and ground reference for direct integration into ACS, ACST, or TRIAC control circuits.
| Pin / Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 - IN | Logic AC switch drive input. | Receives the MCU drive command and controls whether the internal gate driver turns the external AC switch on or off. |
| Pin 2 - AVF | Alternating voltage feedback output. | Provides the AC switch status output to the MCU; the active-low open-collector behavior supports diagnostic interpretation and optocoupler routing. |
| Pin 3 - N/C | No-connect terminal. | Provides no functional external connection and should not be used as an active circuit node. |
| Pin 4 - AC | AC switch status sense input. | Senses the external AC switch voltage through the detection resistor network for diode-mode, short-circuit, and open-switch diagnostic functions. |
| Pin 5 - VCC | Positive power supply. | Supplies the IC from the 3.3 V or 5 V logic rail within the 2.97 V to 5.5 V operating range. |
| Pin 6 - G | AC switch gate driver output. | Sinks gate current for the external ACS, ACST, or TRIAC device and supports continuous, pulsed, or phase-angle drive modes. |
| Pin 7 - RIG | Gate-current setting pin. | Connects to the external resistor used to set the AC switch gate-drive current according to IGT and minimum ambient temperature requirements. |
| Pin 8 - GND | Power-supply reference. | Provides the ground reference for logic input, AVF output, gate-current setting, and internal driver circuitry. |
Key Features
- AC switch failure-mode detector and AC power switch driver in one SO-8 IC.
- Compatible with ACS, ACST, and TRIAC power switches used in mains-load control.
- 3.3 V and 5 V compatible operation for direct MCU interface.
- Gate driver output with up to 28 mA sink current under recommended operating conditions.
- Adjustable gate-drive current through the RIG setting resistor.
- Senses AC switch voltage in both AC line polarities.
- Detects diode-mode failure, short-circuit failure, and open AC switch failure.
- AVF open-collector diagnostic output for MCU status reading or optocoupler-based insulated designs.
- Supports appliance safety monitoring related to IEC 60335-1, IEC 60730-1, and IEC 61000-4-4 system requirements.
Applications
| Home Appliance Safety Monitoring | ACS / ACST / TRIAC Gate Drive |
|---|---|
|
Use Scenario: Appliance control boards monitoring mains-load switching devices for unsafe failure modes. IC Role: AC switch diagnostic interface that reports switch status to the MCU through AVF. Use Value: STCC08RL allows firmware to detect diode-mode, short-circuit, or open-switch faults and move the appliance into a safe configuration. |
Use Scenario: MCU-controlled AC loads using solid-state AC switches for motors, pumps, valves, heaters, or auxiliary mains circuits. IC Role: Logic-to-gate driver for ACS, ACST, or TRIAC devices. Use Value: The adjustable gate current and CMOS-compatible input simplify the connection between a 3.3 V or 5 V MCU and a low-IGT AC switch. |
| Door Lock and Critical Load Detection | Zero-Voltage Synchronization Support |
|
Use Scenario: Appliance circuits where an open switch, shorted switch, or diode-mode failure could create unsafe load behavior. IC Role: Failure-mode detector using AC voltage feedback and MCU diagnostic interpretation. Use Value: STCC08RL improves monitoring of critical AC loads such as door locks and allows the controller to shut down a front-end relay when a fault is detected. |
Use Scenario: Mains-load control systems requiring line-state information for timing or synchronization decisions. IC Role: AC switch sense and feedback IC that can be used independently for ZVS-related detection. Use Value: The AC sense and AVF feedback path helps the MCU observe AC switch state while reducing the number of discrete sensing components. |
Equivalent & Alternatives
When evaluating STCC08RL equivalent devices, engineers should compare AC switch type compatibility, gate-drive current, AVF diagnostic behavior, AC sense network, SO-8 footprint, supply voltage, MCU interface level, failure-mode truth table, external RIG / RAC / RSHUNT network, and production packing format.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STCC08 | Same STCC08 AC switch failure-mode detector and gate-driver function in SO-8 package, but supplied in tube packaging with 100-piece base quantity. | Useful for engineering builds, lower-volume repair programs, or tube-fed assembly where reel packaging is not required. | Select STCC08RL for 13-inch tape-and-reel SMT production; select STCC08 when the same circuit uses tube-based handling. |
Compared with STCC08, STCC08RL keeps the same AC switch driver, AVF diagnostic output, AC sense input, RIG gate-current setting pin, SO-8 package, and electrical operating role. STCC08RL vs STCC08 selection depends mainly on tape-and-reel versus tube packaging logistics rather than a change in the application circuit.
Quality
STCC08RL should be sourced as original STMicroelectronics components through traceable and controlled supply channels. Quality verification procedures may include SO-8 package inspection, top-mark validation, tape-and-reel label review, solderability testing, lead coplanarity inspection, VCC / GND continuity checks, IN logic-input testing, G gate-drive current verification, AVF diagnostic output testing, AC sense path inspection, and incoming inspection according to appliance safety-control production requirements.
Availability
STCC08RL is available at Aetrix Electronics and suitable for home appliance control boards, ACS / ACST / TRIAC drive circuits, AC switch failure detection, zero-voltage synchronization support, critical load monitoring, and legacy mains-control systems requiring stable component supply and repeatable production support.
Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and long-term availability support for appliance manufacturers, repair groups, contract manufacturers, industrial control builders, safety-control board suppliers, and legacy product owners using ST AC switch driver designs.
For production deployment, confirming the SO-8 footprint, tape-and-reel format, VCC rail, ACS / ACST / TRIAC gate-current requirement, RIG resistor value, RAC and RSHUNT network, AVF diagnostic timing, insulation strategy, operating temperature requirement, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.
Manufacturer
STMicroelectronics supplies power-management ICs, AC switch drivers, protection devices, microcontrollers, sensors, analog devices, RF products, and discrete semiconductors for appliance, industrial, consumer, automotive, communication, and embedded applications. STCC08RL belongs to ST's AC switch control and diagnostic product portfolio for appliance safety monitoring and mains-load control support.
FAQ
What is STCC08RL used for?
STCC08RL is used to drive ACS, ACST, or TRIAC power switches and detect AC switch failure modes in appliance control circuits. It reports diode-mode failure, short-circuit failure, and open-switch behavior to an MCU through the AVF diagnostic output so the system can take a safe shutdown action.
Which AC switches are compatible with STCC08RL?
STCC08RL is designed for 5 mA and 10 mA IGT ACS, ACST, and TRIAC devices. The G pin provides the gate-drive output, while the RIG pin sets the drive current through an external resistor. This makes the IC useful in mains-load control circuits driven by a 3.3 V or 5 V MCU.
How does STCC08RL detect AC switch failure?
STCC08RL senses the AC switch voltage through the AC pin and reports diagnostic state through the AVF output. The MCU compares the AVF behavior with the IN drive command. With the proper external network, the system can identify normal switching, diode-mode failure, short-circuit failure, and open-switch failure in both AC line polarities.
What supply voltage does STCC08RL require?
STCC08RL operates from a recommended VCC range of 2.97 V to 5.5 V. This makes it compatible with 3.3 V and 5 V appliance microcontroller supplies. A local 100 nF capacitor between VCC and GND close to the IC is used in typical application layouts for supply decoupling.
What package is used by STCC08RL?
STCC08RL uses an SO-8 surface-mount package. The eight pins are IN, AVF, N/C, AC, VCC, G, RIG, and GND. The RL suffix identifies the tape-and-reel delivery mode, with the same STCC08 marking used on the package.
What does the AVF pin do on STCC08RL?
The AVF pin on STCC08RL is the alternating voltage feedback output. It is an open-collector active-low diagnostic output that can connect directly to an MCU pull-up input or through an optocoupler in an insulated design. The MCU uses AVF timing and level behavior to interpret AC switch operating or fault states.
What is the difference between STCC08RL and STCC08?
STCC08RL and STCC08 use the same AC switch failure-mode detector function, SO-8 package, pinout, gate-driver output, AVF diagnostic output, and AC sense structure. The main difference is packaging: STCC08RL is supplied in 13-inch tape-and-reel format, while STCC08 is supplied in tube packaging.
Can STCC08RL help with appliance safety standards?
STCC08RL is intended to help appliance designs monitor AC switch failure modes associated with safety requirements such as IEC 60335-1 and IEC 60730-1. It lets the MCU sense diode-mode, short-circuit, and open-switch conditions, then command a safe system state such as switching off a front-end relay.
STCC08RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Home Appliance
- Current - Supply:
- 2mA
- Voltage - Supply:
- 2.97V ~ 5.5V
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
STCC08RL FAQ
1.How can I place an order for STCC08RL through Aetrix?
Please submit a Request for Quotation (RFQ) for STCC08RL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STCC08RL reliable?
The price and inventory of STCC08RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STCC08RL is usually 5 days.
3.What payment methods are accepted for STCC08RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STCC08RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STCC08RL?
STCC08RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STCC08RL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STCC08RL?
For technical support, including STCC08RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STCC08RL requirements.
6.How does Aetrix verify that STCC08RL is sourced from the original manufacturer or authorized distributors?
All STCC08RL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STCC08RL meets industry standards.
7.What is the process for return or replacement of STCC08RL?
All STCC08RL units undergo pre-shipment inspection (PSI). If there is an issue with STCC08RL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STCC08RL part is unused and in its original packaging.
Return procedure for STCC08RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STCC08RL Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
