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Skyworks Solutions Inc. SI83411BBA-IFR
- Part No.:
- SI83411BBA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83411BBA-IFR.pdf
- Description:
- 1 CH, ISOLATED SMART SWITCH, SIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
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Product details
Overview
SI83411BBA-IFR from Skyworks Solutions is a single-channel isolated smart switch configured as a low-side, open-drain output with 2.5 A continuous current capability, 41 mΩ RON, and 1.5 kVRMS galvanic isolation. It integrates overcurrent, overtemperature, undervoltage, and open-load diagnostics for industrial load control in PLC I/O modules and solid-state relay replacements.
For engineers reviewing the SI83411BBA-IFR datasheet, SI83411BBA-IFR pinout, SI83411BBA-IFR application, or SI83411BBA-IFR equivalent, this device supports parallel interface control, delivers fault-aware switching for inductive/resistive loads up to 32 V, and provides active-low channel status indication without SPI dependency.
Technical Context
The SI83411BBA-IFR implements RF-based CMOS isolation across a single bidirectional barrier, enabling robust 100 kV/µs CMTI performance and eliminating optocoupler aging concerns. Its low-side switch architecture uses a smart multi-voltage clamp to absorb unlimited demagnetization energy (EAS) while maintaining fast turn-OFF.
Control logic operates from 2.25–5.5 V (VDD1), while the power side accepts 9–32 V (VDD2). Fault reporting includes VDD2 warning (VDD2_WRN), dedicated FLT pin, and open-channel detection - all implemented via hardwired indicators, not SPI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Low-side, open-drain switch with integrated protection |
| Continuous Current | 2.5 A - supports solenoids, relays, and lamps without external heatsinking at full rating |
| RON | 41 mΩ - minimizes conduction loss and self-heating under 2.5 A load |
| Isolation Rating | 1.5 kVRMS - UL 1577 recognized for functional safety in industrial environments |
| VDD1 Supply Range | 2.25–5.5 V - compatible with 2.5 V/3.3 V/5 V MCUs without level-shifting |
| VDD2 Supply Range | 9–32 V - matches standard industrial DC bus voltages (24 V nominal) |
| CMTI | >100 kV/µs - prevents false triggering in noisy motor drive or PLC backplane environments |
| Operating Temp | −40 to +125 °C - qualified for extended temperature operation in cabinet-mounted I/O modules |
Pinout & Package
SI83411BBA-IFR is housed in a compact 9×9 mm DFN-32 package with exposed thermal pad (EP) on underside for PCB heat dissipation. Pin numbering follows standard DFN-32 top-down view with pin 1 marked by dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers internal digital circuitry; must be 2.25–5.5 V; internal diode allows powering from logic inputs |
| GND1 | Logic ground reference | Reference for VDD1 and all logic-level pins; isolated from GND2 |
| OE | Asynchronous output enable | Active-high; disables all outputs immediately regardless of input state or fault condition |
| A1 | Parallel input control | Direct logic-level signal controlling B1 output; no pull-up/pull-down required |
| B1 | Switched output terminal | Low-side drain output; connects load between VDD2 and B1; rated 2.5 A continuous |
| VDD2 | Power supply input | Supplies switched load path; 9–32 V range; monitored for undervoltage warning |
| GND2 | Power ground reference | Reference for VDD2 and B1; galvanically isolated from GND1 |
| VDD2_WRN | Active-low warning indicator | Asserts when VDD2 drops below 18 V threshold; open-drain, requires external pull-up |
| FLT | Active-low fault indicator | Asserts on any detected fault (overcurrent, overtemp, undervoltage); open-drain, shared across channels |
| LED1 | Active-low channel status | Asserts when B1 is ON; open-drain, enables direct LED connection without current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| Multi-voltage output clamp | Handles unlimited EAS during inductive turn-OFF, enabling fast demagnetization without external snubbers |
| Inrush Current Mode | Not supported - SI83411BBA-IFR lacks lamp-driving inrush boost (unlike AAA variants) |
| Open-circuit detection | Reports open-load condition via FLT and LED1 timing behavior, enabling predictive maintenance |
| Asynchronous disable | OE pin forces immediate B1 shutdown independent of A1 state or isolation barrier health |
| Galvanic isolation | CMOS-based RF isolation eliminates LED degradation and provides stable timing over lifetime |
| Industrial voltage compatibility | 9–32 V VDD2 range directly interfaces with 24 V DC control systems without regulation |
Applications
| PLC Digital Output Module | Smart Solid-State Relay |
|---|---|
Use Scenario: Replacing electromechanical relays in modular I/O racks for discrete output control. IC Role / Device Role / Timing Role: Low-side switch driving 24 V solenoid valves with real-time fault reporting via FLT and LED1. Use Value: Eliminates contact wear and bounce, reduces system MTBF downtime, and enables remote diagnostics without adding microcontroller overhead. | Use Scenario: Compact, isolated replacement for panel-mount SSRs in HVAC actuators and packaging machinery. IC Role / Device Role / Timing Role: Single-channel high-current switch with built-in VDD2 monitoring and open-load detection. Use Value: Reduces board area vs. discrete MOSFET+optocoupler solutions and provides early-warning diagnostics before field failure. |
| Industrial Data Acquisition Node | Motion Controller Axis Enable |
Use Scenario: Driving indicator lamps and status LEDs in distributed I/O nodes connected via EtherCAT or PROFINET. IC Role / Device Role / Timing Role: Low-power 3.3 V logic-compatible switch with LED1 direct-drive capability and 10 µs update rate. Use Value: Enables deterministic visual feedback synchronized to control cycle without software polling or GPIO expansion. | Use Scenario: Enabling/disabling servo amplifier power stages in CNC motion controllers. IC Role / Device Role / Timing Role: Safety-monitored enable path with OE-driven hard shutdown and overtemperature constraint enforcement. Use Value: Prevents unintended axis movement during thermal fault events while maintaining isolation integrity during emergency stop sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83411BAA-IFR | Includes VDD2_WRN and OPEN_CH indicators; same pinout and electrical specs | Supports open-circuit warning and VDD2 undervoltage alert via dedicated pins | Select when open-load detection and supply warning are required alongside basic switching |
| SI83401BBA-IFR | High-side sourcing configuration; identical 2.5 A/41 mΩ rating and DFN-32 package | Drives loads between B1 and GND2 instead of VDD2 and B1; requires different PCB layout | Select for high-side topology where load return is common ground and VDD2 is referenced to chassis |
Compared with SI83411BBA-IFR, SI83411BAA-IFR adds diagnostic visibility without changing control interface, while SI83401BBA-IFR changes output polarity - requiring schematic and layout revision but preserving footprint and thermal design.
Availability
SI83411BBA-IFR is available at Aetrix Electronics and suitable for programmable logic controllers, industrial data acquisition nodes, and smart solid-state relays requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for SI83411BBA-IFR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for infrastructure, automotive, and industrial markets.
The Si834x product line was designed specifically for replacing optocoupler-based relay drivers in industrial control systems, delivering higher reliability, faster response, and richer diagnostics than legacy isolation methods.
FAQ
What is the maximum continuous current rating for SI83411BBA-IFR?
The SI83411BBA-IFR is rated for 2.5 A continuous output current at TA = 25 °C with proper PCB copper pour. Derating applies above 85 °C ambient; full 2.5 A is sustainable up to 105 °C case temperature per thermal characterization in the datasheet. This rating assumes use of the exposed thermal pad and minimum 1-in² 2-oz copper area on the primary side.
Does SI83411BBA-IFR support SPI communication?
No, SI83411BBA-IFR does not support SPI communication. It belongs to the "Parallel-only" variant family (denoted by "BBA" suffix), providing control via direct logic inputs (A1) and OE, with diagnostics reported exclusively through hardwired pins (FLT, VDD2_WRN, LED1). SPI capability is reserved for "BDA", "ADA", and "AFA" variants.
What isolation voltage does SI83411BBA-IFR provide, and is it safety certified?
SI83411BBA-IFR provides 1.5 kVRMS galvanic isolation rated per UL 1577 (recognized component) and complies with IEC 61131-2. It is pending full certification under CSA 62368-1 and CQC GB4943.1. The isolation barrier uses Skyworks' proprietary CMOS RF technology, offering >100 kV/µs CMTI and guaranteed lifetime performance exceeding optocouplers.
Can SI83411BBA-IFR drive inductive loads like solenoids safely?
Yes, SI83411BBA-IFR safely drives inductive loads using its integrated multi-voltage smart clamp, which absorbs unlimited demagnetization energy (EAS) without external components. This enables fast, controlled turn-OFF and eliminates voltage spikes that could damage the switch or adjacent circuitry - critical for solenoid and relay coil applications in PLC outputs.
What fault conditions does SI83411BBA-IFR detect and report?
SI83411BBA-IFR detects and reports overcurrent, overtemperature, VDD1 undervoltage, VDD2 undervoltage (via VDD2_WRN), and open-load conditions. All faults assert the active-low FLT pin. Open-circuit detection is inferred from LED1 behavior and FLT assertion timing, while VDD2_WRN provides dedicated low-supply warning independent of FLT.
SI83411BBA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1500Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 3.7µs, 3.7µs
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -, 3µs
- Voltage - Supply:
- 2.25V ~ 5.5V, 9V ~ 32V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-DFN (9x9)
SI83411BBA-IFR FAQ
1.How can I place an order for SI83411BBA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83411BBA-IFR 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 SI83411BBA-IFR reliable?
The price and inventory of SI83411BBA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83411BBA-IFR is usually 5 days.
3.What payment methods are accepted for SI83411BBA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83411BBA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83411BBA-IFR?
SI83411BBA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83411BBA-IFR 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 SI83411BBA-IFR?
For technical support, including SI83411BBA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83411BBA-IFR requirements.
6.How does Aetrix verify that SI83411BBA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83411BBA-IFR 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 SI83411BBA-IFR meets industry standards.
7.What is the process for return or replacement of SI83411BBA-IFR?
All SI83411BBA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83411BBA-IFR, 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 SI83411BBA-IFR part is unused and in its original packaging.
Return procedure for SI83411BBA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83411BBA-IFR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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