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Skyworks Solutions Inc. SI86SL41BC-IS1R
- Part No.:
- SI86SL41BC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL41BC-IS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,849
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Product details
Overview
SI86SL41BC-IS1R 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 bidirectional signal isolation across an internal semiconductor barrier, operates from 2.25–5.5 V on both sides, and supports fail-safe default-low output during unpowered conditions. It is used in battery management systems and onboard chargers where high noise immunity and safety-certified galvanic separation are required.
For engineers reviewing the SI86SL41BC-IS1R datasheet, SI86SL41BC-IS1R pinout, SI86SL41BC-IS1R application, or SI86SL41BC-IS1R equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (UL, VDE, CSA, CQC), and real-world use context for isolated SPI, motor control feedback, and high-voltage domain separation.
Technical Context
The SI86SL41BC-IS1R implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity up to 100 kV/µs. Its architecture includes Schmitt-trigger + CMOS threshold inputs, tri-state outputs with enable control, and selectable fail-safe mode (default-low per ordering code).
This device belongs to the Si86SLx subfamily optimized for low quiescent power (0.25 mA/channel less than Si86S6x), with typical propagation delay of 10 ns and pulse width distortion of 3.5 ns. It supports independent UVLO monitoring per side (VDD1/VDD2) and integrated reset behavior triggered at ~1.7 V (RSTB–), ensuring deterministic state recovery during supply transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI and QSPI without timing bottlenecks. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, IEC 60747-17, and GB4943.1 for safety-critical automotive and industrial applications. |
| Supply voltage | 2.25–5.5 V per side - enables interoperability with 3.3 V and 5 V logic domains on both isolated sides without level-shifting. |
| Propagation delay | 10 ns (typical) - ensures tight timing alignment in closed-loop motor control and fast ADC/DAC isolation paths. |
| Transient immunity | ≥100 kV/µs - provides immunity against fast common-mode transients in inverters and switching power supplies. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive environments and industrial ambient extremes. |
| AEC-Q100 grade | Qualified per AEC-Q100 Rev H - confirms reliability for automotive electronics including traction inverters and BMS. |
Pinout & Package
SI86SL41BC-IS1R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin functions are defined per Figure 2 (Si86S64x/L4x) in the datasheet and confirmed for this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for input-side logic; requires 0.1 µF + 10 µF bypass capacitors placed near pins. |
| A1–A4 | Side A digital I/O | Four isolated input/output channels on main side; compatible with CMOS/Schmitt-trigger logic levels. |
| VDD2, GND2 | Side B power supply | Independent bias for output-side logic; enables dual-domain operation (e.g., 3.3 V MCU ↔ 5 V sensor). |
| B1–B4 | Side B digital I/O | Corresponding isolated channels on secondary side; directionally configurable via external control if needed. |
| EN1, EN2 | Active-high output enable | Tri-states all outputs on respective side; allows shared bus arbitration and power sequencing control. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot-time delays or configuration sequences - outputs become valid within 0.3 ms of VDD stabilization. |
| Fail-safe default-low mode | Ordering code "-IS1R" specifies low-output state when Side A is unpowered but Side B remains active - critical for safe shutdown in BMS fault conditions. |
| High electromagnetic immunity | 100 kV/µs CMTI rating ensures reliable operation in noisy motor drive and inverter environments without false triggering. |
| Low-power optimization | Si86SLx family consumes ≤0.25 mA/channel less quiescent current than Si86S6x - reduces thermal load in compact automotive modules. |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, and CQC GB4943.1 approvals - simplifies end-system safety certification for EV and industrial equipment. |
Applications
| Battery Management System (BMS) | Onboard Charger (OBC) |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring and balancing signals between high-voltage battery stack and low-voltage MCU controller. IC Role / Device Role / Timing Role: Provides galvanic separation for analog front-end ADC data and digital control commands across 400–800 V domains. Use Value: Enables accurate, noise-immune sampling at 150 Mbps while meeting reinforced insulation requirements for functional safety (ISO 26262 ASIL-D support). |
Use Scenario: Isolating gate driver control signals and status feedback between primary-side PWM controller and secondary-side IGBT/MOSFET drivers. IC Role / Device Role / Timing Role: Transmits high-frequency PWM edge timing and fault signals across isolation barrier with <10 ns propagation delay. Use Value: Maintains precise switching synchronization and prevents ground-loop-induced shoot-through in dual-active-bridge topologies. |
| Industrial Motor Control | Traction Inverter |
|
Use Scenario: Isolating encoder position data and current-sense feedback from motor phase legs to servo controller in factory automation. IC Role / Device Role / Timing Role: Carries quadrature encoder pulses and analog-to-digital converter outputs across isolation boundary with minimal jitter. Use Value: Delivers 3.5 ns pulse width distortion and 100 kV/µs transient immunity to preserve position accuracy under EMI stress. |
Use Scenario: Isolating DC-link voltage sensing, temperature monitoring, and gate drive enable/disable signals in electric vehicle traction inverters. IC Role / Device Role / Timing Role: Supports functional safety by separating high-side driver logic from MCU domain while maintaining fail-safe default-low behavior. Use Value: AEC-Q100 qualification and 125 °C operation ensure reliability in under-hood thermal environments with no derating required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641BB-IS1R | Higher quiescent current (≈0.25 mA/channel more), same pinout and isolation rating, no AEC-Q100 qualification. | Targeted at industrial rather than automotive applications; lacks PPAP documentation and IMDS/CAMDS support. | Choose when AEC-Q100 is not required and cost sensitivity outweighs power savings. |
| ADUM4401BRWZ | 4-channel, 100 Mbps, 5000 VRMS, 2.7–5.5 V supply; uses iCoupler® capacitive isolation; no sleep mode or fail-safe option. | Not AEC-Q100 qualified; lower CMTI (75 kV/µs); limited to 105 °C max ambient; no default-low ordering option. | Consider only for non-automotive designs where legacy ADI ecosystem compatibility is prioritized over automotive compliance. |
Compared with SI86SL41BC-IS1R, SI8641BB-IS1R trades low-power optimization for broader industrial availability, while ADUM4401BRWZ offers mature design-in history but lacks automotive qualification, reinforced 6000 VRMS rating, and fail-safe configurability - making SI86SL41BC-IS1R the sole choice for ASIL-B/C BMS and OBC deployments.
Availability
SI86SL41BC-IS1R is available at Aetrix Electronics and suitable for battery management systems, onboard chargers, and traction inverters requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for SI86SL41BC-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 for high-reliability markets.
The Si86Sxx family-including SI86SL41BC-IS1R-is designed specifically for automotive and industrial isolation needs, emphasizing safety certification, high CMTI, low power, and seamless integration into functional safety architectures.
FAQ
What is the isolation voltage rating of SI86SL41BC-IS1R?
SI86SL41BC-IS1R is rated for 6000 VRMS isolation for 1 minute per UL 1577, with reinforced insulation certified to IEC 60747-17, CSA 62368-1, and CQC GB4943.1. This rating applies to the WB SOIC-16 package and enables use in high-voltage automotive and industrial systems where creepage and clearance must exceed 8 mm.
Does SI86SL41BC-IS1R support fail-safe operation, and how is it configured?
Yes, SI86SL41BC-IS1R supports fail-safe operation with default-low output when Side A is unpowered but Side B remains active. This behavior is fixed by the "-IS1R" ordering code and does not require external configuration. The device asserts low on all B-side outputs during VDD1 undervoltage events, ensuring safe shutdown in battery management applications.
What is the maximum data rate supported by SI86SL41BC-IS1R?
SI86SL41BC-IS1R supports data rates from DC up to 150 Mbps across all four channels. This capability enables high-speed isolated communication for SPI, digital encoder interfaces, and real-time control loops without introducing timing bottlenecks or requiring channel multiplexing.
Is SI86SL41BC-IS1R qualified for automotive applications?
Yes, SI86SL41BC-IS1R is fully AEC-Q100 qualified (Grade 1, –40 to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation, IMDS, and CAMDS listings - making it suitable for safety-critical automotive subsystems including BMS, OBC, and traction inverters.
What are the supply voltage requirements for SI86SL41BC-IS1R?
SI86SL41BC-IS1R operates with independent 2.25–5.5 V supplies on both sides (VDD1 and VDD2). This dual-supply flexibility allows interfacing between 3.3 V microcontrollers and 5 V sensor or actuator domains without external level shifters, while maintaining full isolation integrity and timing performance.
SI86SL41BC-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:
- 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-IS1R FAQ
1.How can I place an order for SI86SL41BC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL41BC-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 SI86SL41BC-IS1R reliable?
The price and inventory of SI86SL41BC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL41BC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86SL41BC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL41BC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL41BC-IS1R?
SI86SL41BC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL41BC-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 SI86SL41BC-IS1R?
For technical support, including SI86SL41BC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL41BC-IS1R requirements.
6.How does Aetrix verify that SI86SL41BC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL41BC-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 SI86SL41BC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86SL41BC-IS1R?
All SI86SL41BC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL41BC-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 SI86SL41BC-IS1R part is unused and in its original packaging.
Return procedure for SI86SL41BC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL41BC-IS1R Tags
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