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Skyworks Solutions Inc. SI86SL41FC-IS1R
- Part No.:
- SI86SL41FC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL41FC-IS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,426
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Product details
Overview
SI86SL41FC-IS1R from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced 6000 VRMS isolation, designed for bidirectional signal isolation across high-voltage barriers in industrial and automotive systems. It supports up to 150 Mbps data rate, features 10 ns typical propagation delay, operates from 2.25–5.5 V supplies, and delivers fail-safe default-low output during unpowered conditions.
For engineers reviewing the SI86SL41FC-IS1R datasheet, SI86SL41FC-IS1R pinout, SI86SL41FC-IS1R application, or SI86SL41FC-IS1R equivalent, this device is selected for high-noise environments requiring precise timing, AEC-Q100 qualification, IEC 60747-17 compliance, and robust transient immunity (≥100 kV/µs) in isolated motor control, battery management, and power supply feedback loops.
Technical Context
The SI86SL41FC-IS1R implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing behavior. Its architecture includes Schmitt-trigger inputs with CMOS thresholds, tri-state outputs controlled by EN1/EN2, and selectable fail-safe mode (default-low per ordering code).
This variant belongs to the Si86SLx subfamily-optimized for lower quiescent current (0.25 mA/channel less than Si86S6x) without altering pinout or functional interface. It supports independent side-A/side-B UVLO monitoring, RSTB-level reset detection (~1.7 V), and operates across –40 °C to +125 °C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - enables high-speed serial interfaces including SPI, CAN FD, and isolated ADC/DAC links. |
| Isolation Rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical industrial and automotive applications. |
| Propagation Delay | 10 ns (typical) - ensures tight timing alignment in closed-loop control systems such as motor drives and inverters. |
| Supply Voltage | 2.25–5.5 V - supports interoperability with both 3.3 V and 5 V logic domains on either side of the isolation barrier. |
| Transient Immunity | ≥100 kV/µs - provides immunity against fast-rising common-mode noise in switching power supplies and motor drives. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive use and industrial environments with wide thermal excursions. |
| Fail-Safe Mode | Default-low output - ensures predictable state during side-B power loss, critical for safe shutdown in BMS and traction inverter systems. |
Pinout & Package
SI86SL41FC-IS1R is housed in a narrow-body SOIC-16 package (NB SOIC-16), with creepage/clearance compliant to reinforced insulation standards. Pin assignments follow the Si86S64x/L4x family layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A power supply | Supplies 2.25–5.5 V to input-side circuitry; requires 0.1 µF + 10 µF bypass capacitors near pin. |
| GND1 | Side A ground | Reference return for side-A signals and supply; must be separated from GND2 by ≥8 mm creepage in PCB layout. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels from controller side; accept CMOS/Schmitt-trigger logic levels. |
| EN1 | Side A output enable | Active-high control: drives all side-A outputs into high-impedance when low, enabling bus sharing or power gating. |
| Isolation Barrier | Internal dielectric separation | Robust semiconductor barrier providing 6000 VRMS withstand and >100 kV/µs CMTI performance. |
| B1–B4 | Side B digital I/O | Four isolated output channels to peripheral side; maintain logic state during side-A power loss per fail-safe setting. |
| EN2 | Side B output enable | Active-high control: places side-B outputs in tri-state, allowing multiple isolators to share an isolated bus. |
| GND2 | Side B ground | Isolated reference for side-B signals; forms safety barrier with GND1; must not be connected externally. |
| VDD2 | Side B power supply | Independent 2.25–5.5 V supply for output side; enables galvanic separation of power domains. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated channel architecture eliminates boot delay or configuration sequence-output follows input immediately after UVLO exit. |
| Low-power optimization | Si86SLx-specific design reduces quiescent current by 0.25 mA/channel vs. Si86S6x, lowering thermal load in dense PCB layouts. |
| Tri-state outputs with enable | EN1/EN2 pins provide synchronous, side-specific output disable-essential for multi-drop isolated buses and shared peripheral interfaces. |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, and CQC GB4943.1 approvals confirm suitability for medical, industrial, and automotive end-equipment. |
| Selectable fail-safe mode | Ordering code "-IS1R" specifies default-low output state during side-A unpowering-prevents unintended actuation in safety-critical paths. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks for servo drives and HVAC compressors. IC Role / Device Role / Timing Role: Bidirectional signal isolator transmitting PWM commands and fault status across 600–1200 V DC bus barriers with <10 ns skew. Use Value: Enables compact, high-efficiency designs meeting IEC 61800-5-1 reinforced insulation requirements while maintaining precise timing for field-oriented control. |
Use Scenario: Isolating cell voltage monitoring and pack contactor control signals between high-voltage battery modules and MCU-based BMS controllers. IC Role / Device Role / Timing Role: Four-channel isolator conveying analog front-end ADC data and digital control commands across 400–800 V isolation barriers. Use Value: Supports AEC-Q100 Grade 0 qualification and 125 °C operation required for under-hood BMS units, with fail-safe low output preventing false contactor closure. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Providing feedback path for secondary-side voltage/current sensing in isolated DC-DC converters used in telecom and server PSUs. IC Role / Device Role / Timing Role: Transmitting error amplifier output and over-current flags across isolation boundary with <15 ns total propagation delay. Use Value: Maintains loop stability in high-frequency (>500 kHz) flyback and LLC topologies while meeting UL 62368-1 reinforced insulation mandates. |
Use Scenario: Isolating ECG/EEG analog front-end digitization paths and microcontroller communication in Class II medical devices. IC Role / Device Role / Timing Role: Four-channel isolator separating patient-connected analog circuits from digital processing domain with 6000 VRMS withstand. Use Value: Meets IEC 60601-1 2× MOPP requirements for patient safety, with low EMI emissions supporting EMC compliance in diagnostic equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-IS1R | Higher quiescent current (≈0.25 mA/channel more), same pinout and isolation rating; no sleep mode option. | Preferred where maximum data integrity at 150 Mbps is prioritized over ultra-low power in always-on systems. | Choose SI8641ED-IS1R if system-level power budget allows higher IDD and timing jitter margin is tighter than 3.5 ns PWD. |
| ADUM4401BRWZ | 4-channel, 5 kVRMS isolation, 100 Mbps max, 13 ns propagation delay; uses iCoupler magnetic coupling instead of RF. | Suitable for legacy designs already using ADI isolators; lacks AEC-Q100 qualification and 6 kVRMS rating. | Choose ADUM4401BRWZ only for non-automotive industrial applications where 5 kVRMS suffices and existing layout reuse is critical. |
Compared with SI8641ED-IS1R and ADUM4401BRWZ, SI86SL41FC-IS1R delivers lower power consumption, higher isolation rating, and automotive qualification-making it optimal for next-generation BMS, traction inverters, and high-reliability medical power supplies where safety, efficiency, and thermal headroom are constrained.
Availability
SI86SL41FC-IS1R is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86SL41FC-IS1R 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, with leadership in RF, timing, and isolation technologies.
The Si86Sxx family-including SI86SL41FC-IS1R-is engineered for high-reliability isolation in harsh environments, targeting automotive electrification, industrial automation, and medical electronics where safety certification and noise immunity are mandatory.
FAQ
What is the isolation voltage rating of SI86SL41FC-IS1R?
SI86SL41FC-IS1R is rated for 6000 VRMS isolation for 1 minute per UL 1577, with reinforced insulation certified to IEC 60747-17. This rating applies to the NB SOIC-16 package and supports safety-critical applications in industrial and automotive systems where high working voltage barriers are required.
Does SI86SL41FC-IS1R support fail-safe operation, and how is it configured?
Yes, SI86SL41FC-IS1R implements fail-safe operation with a default-low output state during side-A unpowering, as indicated by the "-IS1R" suffix in its ordering code. This behavior is factory-set and does not require external configuration-ensuring predictable deactivation of downstream circuits during power loss.
What are the supply voltage requirements for SI86SL41FC-IS1R?
SI86SL41FC-IS1R operates with independent 2.25 V to 5.5 V supplies on both sides (VDD1 and VDD2). Each supply requires local 0.1 µF ceramic + 10 µF bulk bypass capacitors. The device functions correctly even with mismatched voltages-for example, 3.3 V on side A and 5 V on side B.
How does SI86SL41FC-IS1R differ from standard Si86S64x isolators?
SI86SL41FC-IS1R belongs to the low-power Si86SLx subfamily, consuming ≈0.25 mA less per channel in quiescent mode than Si86S64x variants. Its pinout and functionality are identical, but timing specs (e.g., pulse width distortion) are relaxed to prioritize power efficiency-ideal for thermally constrained applications.
Is SI86SL41FC-IS1R qualified for automotive applications?
Yes, SI86SL41FC-IS1R is AEC-Q100 qualified (Grade 0: –40 °C to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is approved for use in onboard chargers, battery management systems, and traction inverters in BEV/HEV platforms.
SI86SL41FC-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 18ns
- Pulse Width Distortion (Max):
- 7ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86SL41FC-IS1R FAQ
1.How can I place an order for SI86SL41FC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL41FC-IS1R 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 SI86SL41FC-IS1R reliable?
The price and inventory of SI86SL41FC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL41FC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86SL41FC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL41FC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL41FC-IS1R?
SI86SL41FC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL41FC-IS1R 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 SI86SL41FC-IS1R?
For technical support, including SI86SL41FC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL41FC-IS1R requirements.
6.How does Aetrix verify that SI86SL41FC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL41FC-IS1R 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 SI86SL41FC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86SL41FC-IS1R?
All SI86SL41FC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL41FC-IS1R, 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 SI86SL41FC-IS1R part is unused and in its original packaging.
Return procedure for SI86SL41FC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL41FC-IS1R Tags
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ISO1212DBQR
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SI8710AC-B-ISR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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