My Inquiry
My Account
Skyworks Solutions Inc. SI83416BFA-IFR
- Part No.:
- SI83416BFA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83416BFA-IFR.pdf
- Description:
- 2 CH, ISOLATED SMART SWITCH, SOU
- Quantity:
- Payment:
- Shipping:
Inventory:3,530
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI83416BFA-IFR from Skyworks Solutions is a 2-channel isolated smart switch with galvanic isolation, configured as low-side switches for industrial load control. It delivers 1.25 A continuous current per channel (RON = 78 mΩ), operates from 9–32 V switch supply and 2.25–5.5 V logic supply, and integrates full fault protection including overcurrent, overtemperature, and undervoltage monitoring - deployed in programmable logic controllers driving solenoids and relays.
For engineers reviewing the SI83416BFA-IFR datasheet, SI83416BFA-IFR pinout, SI83416BFA-IFR application, or SI83416BFA-IFR equivalent, this page provides verified technical context, real-world diagnostic capabilities (8 diagnostics via SPI), isolation performance (>100 kV/µs CMTI), safety certifications (UL 1577, IEC 61131-2), and precise package mapping to DFN-32 (9×9 mm) - all confirmed from Skyworks' official Si834x datasheet Rev. 206512A.
Technical Context
The SI83416BFA-IFR implements two independent low-side switching channels using RF-based CMOS isolation, each with dedicated isolation barriers for control and diagnostics. Its analog front-end includes precision voltage, current, and temperature sensing per channel, enabling real-time load condition monitoring and autonomous fault response without host intervention.
Switch operation supports parallel interface control with asynchronous OE pin and exposes eight diagnostics via SPI - including open-circuit detection, VDD2 warning, communication errors, and overtemperature events - with independent isolation channels ensuring diagnostic integrity remains decoupled from switch control timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 2 independent low-side switches with galvanic isolation between logic and power domains |
| Continuous Current | 1.25 A per channel - enables direct drive of industrial solenoids and relays without external boost circuitry |
| RON | 78 mΩ max - minimizes conduction loss and thermal rise at rated load |
| Switch Supply Range | 9 V–32 V - compatible with standard 24 V DC industrial bus systems |
| Logic Supply Range | 2.25 V–5.5 V - interoperable with modern low-voltage MCUs including ARM Cortex-M series |
| CMTI | >100 kV/µs - ensures reliable operation in noisy factory environments with fast transients |
| Isolation Rating | 1.5 kVRMS - certified to UL 1577 and compliant with IEC 61131-2 for functional safety in PLC applications |
| Operating Temp | −40 °C to +125 °C - supports deployment in uncontrolled industrial enclosures |
Pinout & Package
SI83416BFA-IFR is housed in a compact 9×9 mm DFN-32 package with wettable flanks, optimized for automated optical inspection and high-density industrial PCB layouts. Pin assignment is validated per Skyworks Si834x datasheet Figure 2 and Table 1 ordering guide.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Provides power to digital interface (2.25–5.5 V); powers internal logic and SPI controller |
| OE | Asynchronous output enable | Active-high global enable; overrides individual channel control for rapid system-level shutdown |
| GND1 | Logic ground reference | Return path for VDD1 and digital interface signals; isolated from power domain ground |
| VDD2 | Switch supply input | High-side power rail for both low-side switches (9–32 V); monitored for undervoltage warnings |
| GND2 | Power ground reference | Return path for switched loads; galvanically isolated from GND1 to maintain barrier integrity |
| B1, B2 | Low-side switch outputs | Open-drain, current-sinking terminals; each drives one load to GND2 with integrated protection |
| FLT | Active-low fault indicator | Open-drain output asserting when any diagnostic fault (e.g., overtemp, overcurrent, comm error) is active |
| MOSI, MISO, SCLK, NSS | SPI interface signals | Full-duplex serial interface for reading 8 diagnostics, configuring protection thresholds, and clearing faults |
Key Features
| Feature | Design Value |
|---|---|
| RF-based CMOS isolation | Eliminates LED aging and CTR degradation of optocouplers; achieves >100 kV/µs CMTI and 1.5 kVRMS rating |
| Smart output clamp | Multi-voltage clamp handles unlimited demagnetization energy (EAS) while enabling fast turn-OFF for inductive loads |
| Inrush Current Mode | Not supported on SI83416BFA-IFR - confirmed by Table 1 ordering guide entry showing "No" for Inrush Current Mode |
| Eight diagnostics via SPI | Reports VDD2 warning, overcurrent, overtemperature, open-circuit, communication error, and supply faults - all accessible without interrupting switch operation |
| Dedicated fault indicator (FLT) | Active-low open-drain pin provides immediate hardware-level fault signaling for system watchdog or LED indication |
| Asynchronous OE control | Enables deterministic, cycle-accurate global disable of both outputs independent of SPI or register state |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Data Acquisition Systems |
|---|---|
|
Use Scenario: Controlling 24 V DC solenoid valves and relay coils in modular I/O modules of DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Low-side switch providing isolated, current-limited, fault-monitored load drive with <10 µs update rate. Use Value: Replaces discrete optocoupler + MOSFET + protection IC solutions, reducing BOM count and improving reliability under EMI stress. |
Use Scenario: Driving analog sensor excitation circuits and multiplexer control lines in ruggedized data loggers deployed in factory floors. IC Role / Device Role / Timing Role: Isolated power switch enabling safe sequencing of sensor bias supplies while reporting open-circuit faults. Use Value: Enables early detection of broken sensor wiring via open-channel diagnostics, preventing erroneous measurements. |
| Motion Controllers | Smart Solid-State Relays |
|
Use Scenario: Managing brake release coils and limit switch drivers in servo axis control cabinets where transient immunity is critical. IC Role / Device Role / Timing Role: Galvanically isolated low-side driver with overtemperature constraint limiting to prevent coil overheating during stall conditions. Use Value: Maintains safe operation during extended motor stall by autonomously throttling current based on die temperature feedback. |
Use Scenario: Building compact, DIN-rail mountable solid-state relays with embedded diagnostics for HVAC and building automation panels. IC Role / Device Role / Timing Role: Dual-channel isolated switch serving as core output stage with SPI-accessible health telemetry. Use Value: Allows remote monitoring of relay status (ON/OFF), supply health, and fault history - eliminating need for external sense resistors or thermistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated low-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83416BDA-IFR | No SPI interface; parallel-only control with OE pin only - lacks diagnostic access and configuration capability | Suitable for cost-sensitive, fixed-function designs where diagnostics are not required | Select SI83416BFA-IFR when SPI-based fault logging, remote configuration, or multi-device daisy-chaining is needed |
| SI83412BAA-IFR | 2-channel low-side switch with parallel interface and channel status indicators (LED1/LED2), but no SPI or FLT pin | Designed for visual status feedback in panel-mounted equipment; no diagnostic registers or communication | Choose SI83416BFA-IFR when centralized diagnostics, firmware-controlled fault clearing, or integration into SPI-based control networks is required |
Compared with SI83416BDA-IFR and SI83412BAA-IFR, SI83416BFA-IFR uniquely combines dual low-side switching, full SPI diagnostics, and a dedicated FLT pin - enabling predictive maintenance, remote health monitoring, and robust fault handling in networked industrial systems without adding external monitoring ICs.
Availability
SI83416BFA-IFR is available at Aetrix Electronics and suitable for programmable logic controllers, motion controllers, and smart solid-state relays requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.
Supply support for SI83416BFA-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 industrial automation applications requiring high-reliability, galvanically isolated load switching with embedded diagnostics - replacing legacy optocoupler-based relay drivers with integrated, intelligent alternatives.
FAQ
What is the isolation architecture used in SI83416BFA-IFR?
SI83416BFA-IFR uses Skyworks' proprietary RF-based CMOS isolation technology - not optocouplers or capacitive isolation. This architecture modulates an RF carrier across the isolation barrier, delivering >100 kV/µs common-mode transient immunity and 1.5 kVRMS isolation rating, with superior lifetime reliability versus LED-based solutions. The SI83416BFA-IFR datasheet confirms this in Section 2 and Figure 1.
Does SI83416BFA-IFR support inrush current mode for lamp loads?
No. SI83416BFA-IFR does not support inrush current mode. Per Table 1 in the official Si834x datasheet, the "Inrush Current Mode" column for SI83416BFA-IFR is explicitly marked "No". This distinguishes it from variants like SI83414AAA-IFR or SI83418AFA-IFR, which do include 8 A / 20 ms inrush capability.
How many diagnostics does SI83416BFA-IFR report, and how are they accessed?
SI83416BFA-IFR reports eight distinct diagnostics - including VDD2 warning, overcurrent, overtemperature, open-circuit, and communication errors - all accessible via its SPI interface (MOSI/MISO/SCLK/NSS pins). These diagnostics reside in device status registers and can be read, monitored, and cleared in real time without affecting switch operation.
What is the maximum continuous output current per channel for SI83416BFA-IFR?
The maximum continuous output current per channel for SI83416BFA-IFR is 1.25 A, with a typical RON of 78 mΩ. This value is confirmed in Table 1 of the Si834x datasheet under "Continuous Output Current" for ordering part SI83416BFA-IFR, and applies under specified thermal conditions (TA ≤ 85 °C, PCB layout per recommended footprint).
Is SI83416BFA-IFR pin-compatible with other Si834x family members?
No - SI83416BFA-IFR is not pin-compatible with other Si834x variants. While all Si834x devices use the same DFN-32 package, pin functions differ significantly across configurations (e.g., SI83408AFA-IFR has different SPI routing and indicator pin assignments). The SI83416BFA-IFR pinout is unique to its parallel/SPI dual-interface, 2-channel low-side configuration and must be laid out per its specific assignment in the datasheet.
SI83416BFA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Bidirectional, 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)
SI83416BFA-IFR FAQ
1.How can I place an order for SI83416BFA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83416BFA-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 SI83416BFA-IFR reliable?
The price and inventory of SI83416BFA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83416BFA-IFR is usually 5 days.
3.What payment methods are accepted for SI83416BFA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83416BFA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83416BFA-IFR?
SI83416BFA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83416BFA-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 SI83416BFA-IFR?
For technical support, including SI83416BFA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83416BFA-IFR requirements.
6.How does Aetrix verify that SI83416BFA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83416BFA-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 SI83416BFA-IFR meets industry standards.
7.What is the process for return or replacement of SI83416BFA-IFR?
All SI83416BFA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83416BFA-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 SI83416BFA-IFR part is unused and in its original packaging.
Return procedure for SI83416BFA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83416BFA-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
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
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…
