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Skyworks Solutions Inc. SI86SL41BC-IS1
- Part No.:
- SI86SL41BC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL41BC-IS1.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:2,033
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Product details
Overview
SI86SL41BC-IS1 from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features Schmitt-trigger inputs, tri-state outputs with enable, selectable fail-safe default (high/low), and operates across –40 to 125 °C in a WB SOIC-16 package. It is used in battery management systems and isolated ADC interfaces where high noise immunity and safety-certified galvanic separation are required.
For engineers reviewing the SI86SL41BC-IS1 datasheet, SI86SL41BC-IS1 pinout, SI86SL41BC-IS1 application, or SI86SL41BC-IS1 equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options - all aligned to Skyworks' official Si86S6xx/Lxx family documentation dated August 17, 2023.
Technical Context
The SI86SL41BC-IS1 implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust operation without optical degradation. Its architecture supports bidirectional signal transfer across four independent channels with side-specific enable control (EN1/EN2) and failsafe output state selection during power loss.
It integrates undervoltage lockout (UVLO) and reset circuitry per side (VDD1/VDD2), with UVLO+ = 2.18 V (typ) and RSTB– ≈ 1.7 V, ensuring deterministic behavior during brownout and power sequencing. The device uses CMOS thresholds and internal 50 Ω output impedance, requiring only 0.1 µF + 10 µF bypass capacitors per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including SPI and isolated sensor interfaces without timing bottlenecks. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical automotive and industrial applications. |
| Propagation delay | 10 ns (typ) - enables precise timing alignment in feedback loops and motor control gate drivers. |
| Supply voltage | 2.25 to 5.5 V - interoperable with 3.3 V and 5 V logic domains on both sides without level-shifting components. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive environments and industrial ambient conditions. |
| CMTI | ≥100 kV/µs (min) - ensures reliable operation in high dv/dt noise environments such as inverters and SMPS. |
| Power consumption | 0.25 mA/channel less than Si86S6x - optimized quiescent current for always-on BMS monitoring circuits. |
Pinout & Package
SI86SL41BC-IS1 is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance compliant for 6000 VRMS working voltage. Pinout follows the Si86SL4x configuration: Side A (pins 1–8) and Side B (pins 9–16) are separated by an internal semiconductor isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for input-side logic and transmitter; requires local 0.1 µF + 10 µF decoupling. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels from controller domain (e.g., MCU GPIO or SPI lines). |
| EN1 | Side A output enable | Active-high control: drives A-side outputs into high-impedance when low, enabling bus sharing. |
| VDD2, GND2 | Side B power supply | Isolated supply for output-side logic and receiver; independent of VDD1 for true galvanic separation. |
| B1–B4 | Side B digital I/O | Four corresponding isolated output channels to peripheral domain (e.g., isolated ADC/DAC or gate driver inputs). |
| EN2 | Side B output enable | Active-high control: places B-side outputs in high-Z, supporting multi-drop or shared-bus topologies. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated architecture eliminates boot delay or configuration overhead - output follows input immediately after UVLO exit. |
| Selectable fail-safe mode | Ordering option sets default output state (high or low) during VDD1 unpowered condition - critical for safe shutdown in BMS. |
| Schmitt-trigger + CMOS inputs | Input hysteresis ≥0.15 × VDDx ensures >360 mV noise margin at 3.3 V - rejects EFT bursts and conducted transients. |
| Tri-state outputs with EN pins | Dual enable inputs (EN1/EN2) allow independent high-Z control per side - supports multiplexed isolated buses and hot-swap capability. |
| AEC-Q100 Grade 1 | Qualified for automotive applications up to 125 °C ambient - manufactured using automotive-specific process flows and defectivity controls. |
Applications
| Motor Control Feedback Loop | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating PWM gate drive signals and current-sense feedback in traction inverters for EVs. IC Role / Device Role / Timing Role: Transmits high-frequency switching commands and fast analog-to-digital converter outputs across isolation barrier with <10 ns propagation delay. Use Value: Enables safe, high-bandwidth communication between MCU and IGBT/SiC gate drivers while meeting reinforced insulation requirements per ISO 26262 ASIL-D. |
Use Scenario: Connecting precision ADCs (e.g., isolated sigma-delta converters) to host microcontrollers in battery pack monitoring units. IC Role / Device Role / Timing Role: Provides galvanically isolated digital data path for 24-bit ADC results with deterministic latency and no clock skew. Use Value: Maintains measurement integrity in high-common-mode-voltage battery string monitoring (up to 1000 V) with CMTI ≥100 kV/µs. |
| Onboard Charger (OBC) Control | Battery Management System (BMS) |
|
Use Scenario: Isolating communication between primary-side AC/DC controller and secondary-side DC/DC regulation in EV onboard chargers. IC Role / Device Role / Timing Role: Carries bidirectional control signals (enable, fault, status) and analog feedback across 6000 VRMS barrier with fail-safe defaults. Use Value: Ensures functional safety during grid transients and prevents latch-up in dual-supply OBC architectures with independent 12 V and 400 V domains. |
Use Scenario: Isolating cell voltage and temperature telemetry from high-voltage battery modules to central BMS controller. IC Role / Device Role / Timing Role: Transfers time-stamped sensor data from isolated slave nodes using low-power, high-noise-immunity digital links. Use Value: Reduces system-level power consumption via 0.25 mA/channel quiescent current savings versus standard Si86S6x, extending standby runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641BB-IS1 | Standard-performance variant (Si86S6x family); higher quiescent current (≈0.25 mA/channel more), same pinout and 6000 VRMS rating. | Preferred where timing specs (e.g., pulse width distortion ≤3.5 ns) are prioritized over ultra-low power. | Choose SI8641BB-IS1 if design requires tighter timing margins and can accommodate higher static current. |
| ADUM2401ARWZ | Analog Devices part; 2500 VRMS isolation, 100 Mbps max, SOIC-16, but lacks AEC-Q100 qualification and reinforced certification. | Suitable for industrial automation where 6000 VRMS and automotive qualification are not mandated. | Choose ADUM2401ARWZ only for cost-sensitive non-automotive applications with lower isolation and qualification requirements. |
Compared with SI86SL41BC-IS1, SI8641BB-IS1 trades lower power for superior timing performance, while ADUM2401ARWZ offers legacy compatibility at reduced safety certification scope - making SI86SL41BC-IS1 the optimal choice for AEC-Q100-compliant, high-isolation automotive systems demanding minimal quiescent draw.
Availability
SI86SL41BC-IS1 is available at Aetrix Electronics and suitable for battery management systems, traction inverter feedback loops, and onboard charger control requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI86SL41BC-IS1 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 for wireless, automotive, and industrial markets.
The Si86S6xx/Lxx/Mxx/Qxx/Sxx family was designed to replace optocouplers with higher reliability, speed, and integration - specifically targeting automotive electrification, industrial automation, and medical equipment requiring certified reinforced isolation.
FAQ
What is the isolation rating and safety certification status of SI86SL41BC-IS1?
SI86SL41BC-IS1 provides 6000 VRMS reinforced isolation per UL 1577 (1 minute) and complies with IEC 60747-17. It holds pending VDE, CSA, and CQC certifications for 62368-1 and 60601-1. The device is AEC-Q100 Grade 1 qualified and built using automotive-specific manufacturing flows - confirming its suitability for high-reliability automotive applications including battery management and traction inverters.
Does SI86SL41BC-IS1 require external configuration or initialization at power-up?
No, SI86SL41BC-IS1 requires no start-up initialization. Its RF-modulated architecture enables immediate signal transmission after exiting undervoltage lockout (UVLO). Output states follow inputs within 0.3 ms of VDD stabilization, with a 100 kΩ weak pulldown holding outputs low until valid supply is detected - eliminating firmware boot dependencies and simplifying system design.
How does the fail-safe mode operate on SI86SL41BC-IS1, and how is it selected?
SI86SL41BC-IS1 offers ordering-option-selectable fail-safe mode: default output state (high or low) when VDD1 is unpowered but VDD2 remains active. This behavior is hardwired per part number and defined in Table 4 of the datasheet. For SI86SL41BC-IS1, the "BC" suffix indicates the default-low variant - ensuring safe shutdown of downstream peripherals during controller-side power loss in automotive BMS applications.
What are the supply bypass requirements for SI86SL41BC-IS1?
SI86SL41BC-IS1 requires two bypass capacitors per supply rail: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible to VDD1/GND1 and VDD2/GND2 pins. This dual-capacitor network suppresses high-frequency noise and sustains transient current demands during channel switching - essential for maintaining CMTI ≥100 kV/µs and preventing false triggering in noisy inverter environments.
Can SI86SL41BC-IS1 be used in SPI isolation applications?
SI86SL41BC-IS1 is a general-purpose 4-channel digital isolator and does not integrate dedicated SPI protocol logic (e.g., chip select synchronization or clock domain crossing buffers). For SPI isolation, Skyworks recommends the pin-compatible SI86SS41 or SI86SS51 variants. SI86SL41BC-IS1 may be used for discrete signal isolation in SPI paths (e.g., MOSI, MISO, SCLK, CS) but requires external timing coordination and does not support automatic direction control or buffered MI functionality.
SI86SL41BC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 100kV/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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86SL41BC-IS1 FAQ
1.How can I place an order for SI86SL41BC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL41BC-IS1 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 SI86SL41BC-IS1 reliable?
The price and inventory of SI86SL41BC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL41BC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86SL41BC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL41BC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL41BC-IS1?
SI86SL41BC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL41BC-IS1 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 SI86SL41BC-IS1?
For technical support, including SI86SL41BC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL41BC-IS1 requirements.
6.How does Aetrix verify that SI86SL41BC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86SL41BC-IS1 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 SI86SL41BC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86SL41BC-IS1?
All SI86SL41BC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL41BC-IS1, 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 SI86SL41BC-IS1 part is unused and in its original packaging.
Return procedure for SI86SL41BC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL41BC-IS1 Tags
-
ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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