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Skyworks Solutions Inc. SI86SM41BC-IS1
- Part No.:
- SI86SM41BC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SM41BC-IS1.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,768
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Product details
Overview
SI86SM41BC-IS1 from Skyworks Solutions is a 4-channel reinforced digital isolator with sleep mode control (SMb pin), designed for high-noise industrial and automotive signal isolation across an isolation barrier. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, achieves 6000 VRMS isolation rating, and operates across –40 to 125 °C in a WB SOIC-16 package - used in isolated ADC interfaces and battery management system communication links.
For engineers reviewing the SI86SM41BC-IS1 datasheet, SI86SM41BC-IS1 pinout, SI86SM41BC-IS1 application, or SI86SM41BC-IS1 equivalent, this page provides verified technical context, validated pin functions, confirmed fail-safe behavior (default-low output), real-world timing specs, and two qualified alternative parts for design flexibility in high-reliability isolated power and control systems.
Technical Context
The SI86SM41BC-IS1 implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture includes four unidirectional channels (A1–A4 → B1–B4), one active-low sleep mode input (SMb), and independent undervoltage lockout (UVLO) on both sides with 2.10–2.25 V thresholds.
It features Schmitt-trigger + CMOS threshold inputs, tri-state outputs with enable logic, and precise timing: 10 ns typical propagation delay, 3.5 ns pulse width distortion, and 100 kV/µs transient immunity. The device supports fail-safe default-low output during unpowered conditions and requires only 0.1 µF + 10 µF bypass capacitors per side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI and motor control feedback loops. |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical applications. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time control systems like traction inverters and isolated ADC sampling. |
| Supply voltage | 2.25 to 5.5 V - allows interoperability with 3.3 V and 5 V logic domains without level shifters. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial environments with no derating required. |
| Transient immunity | 100 kV/µs minimum - ensures reliable operation in high dv/dt switching environments such as SiC/GaN power stages. |
| Sleep current | 750 µA per side - reduces standby power in battery management systems during idle periods without sacrificing wake-up latency. |
Pinout & Package
SI86SM41BC-IS1 is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced isolation. Pin assignments follow Figure 3 of the datasheet (Si86SM4x series).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for input-side circuitry; requires 0.1 µF + 10 µF local decoupling. |
| A1–A4 | Digital inputs (Side A) | Four unidirectional input channels driving isolated outputs B1–B4 across the barrier. |
| SMb | Sleep mode control | Active-low input that disables all transmitters and places outputs in high-impedance state while retaining wake capability. |
| Isolation Barrier | Internal die separation | Robust semiconductor barrier enabling 6000 VRMS withstand and 100 kV/µs CMTI performance. |
| B1–B4 | Digital outputs (Side B) | Four isolated output channels, each with 50 Ω nominal output impedance for controlled-impedance PCB routing. |
| VDD2, GND2 | Side B power supply | Independent supply domain for output-side logic; supports different voltage than VDD1. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode (SMb) | Reduces total device current to 750 µA per side while maintaining fast wake-up via dedicated monitoring channel. |
| Fail-safe default-low output | Ensures predictable low-state behavior on Side B when VDD1 is unpowered - critical for safe shutdown in BMS and motor drives. |
| RF modulation architecture | Eliminates startup initialization delay and provides superior magnetic field immunity vs. pulse-based isolators. |
| Tri-state outputs with enable | Allows bus sharing and hot-swap compatibility in multi-device isolated communication backplanes. |
| Reinforced IEC 60747-17 rating | Validated for use in medical (60601-1) and industrial (62368-1) safety-critical systems without additional certification effort. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate driver signals and current sense feedback in 3-phase inverter stacks using SiC MOSFETs. IC Role / Device Role / Timing Role: SI86SM41BC-IS1 provides four forward-direction isolated channels with 10 ns propagation delay to synchronize PWM edges across high-voltage domains. Use Value: Enables precise timing alignment between controller and power stage while meeting 6000 VRMS reinforced isolation for functional safety compliance. |
Use Scenario: Isolating cell voltage monitoring and balancing commands between MCU and analog front-end in EV battery packs. IC Role / Device Role / Timing Role: SI86SM41BC-IS1 interfaces isolated ADC data lines and digital control signals with fail-safe default-low behavior during partial power loss. Use Value: Prevents erroneous balancing activation during brown-out events, improving system reliability and ASIL-B readiness. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Providing feedback path for secondary-side voltage regulation and primary-side overcurrent protection signaling in 1–3 kW AC/DC converters. IC Role / Device Role / Timing Role: SI86SM41BC-IS1 carries error amplifier output and fault flags across isolation barrier with 100 kV/µs CMTI immunity against transformer ringing. Use Value: Maintains stable regulation under high dv/dt noise, reducing need for external filtering and improving power density. |
Use Scenario: Isolating ECG/EEG analog front-end digitization paths from host processor in Class II medical devices. IC Role / Device Role / Timing Role: SI86SM41BC-IS1 transfers digitized sensor data and clock signals while meeting reinforced insulation per IEC 60601-1. Use Value: Eliminates patient leakage current risk and simplifies system-level safety certification by providing pre-validated isolation barrier. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 4-channel, 1 Mbps max data rate; 2500 VRMS isolation; no sleep mode; CMOS-based pulse encoding. | Limited to lower-speed industrial PLC I/O modules where CMTI > 50 kV/µs is not required. | Choose ADUM2401ARWZ only if cost sensitivity outweighs speed, isolation rating, and power efficiency needs. |
| ISO6741QDWR | 4-channel, 50 Mbps max data rate; 5000 VRMS; no SMb pin; TI's capacitive isolation with integrated LDO option. | Suitable for automotive body electronics but lacks AEC-Q100 qualification at 125 °C junction for traction applications. | Select ISO6741QDWR when integrating isolated power is preferred and 150 Mbps throughput is unnecessary. |
Compared with ADUM2401ARWZ and ISO6741QDWR, SI86SM41BC-IS1 delivers higher data rate (150 Mbps), stronger isolation (6000 VRMS), lower sleep current (750 µA), and AEC-Q100 qualification - making it optimal for next-generation EV inverters and high-density industrial servo drives.
Availability
SI86SM41BC-IS1 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 with long-term lifecycle support.
Supply support for SI86SM41BC-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 high-performance analog and mixed-signal connectivity solutions for wireless, automotive, and industrial markets.
The Si86S6xx/Lxx/Mxx/Qxx/Sxx family was engineered specifically for high-reliability signal isolation in harsh electromagnetic environments - targeting automotive traction systems, industrial automation, and medical equipment requiring reinforced safety certification.
FAQ
What is the isolation voltage rating of the SI86SM41BC-IS1?
The SI86SM41BC-IS1 is rated for 6000 VRMS isolation for 1 minute per UL 1577 and certified to IEC 60747-17 for reinforced insulation. This rating applies to the WB SOIC-16 package and is validated for continuous working voltage up to 1140 V peak in end-system designs compliant with IEC 62368-1 and IEC 60601-1.
Does the SI86SM41BC-IS1 require startup initialization?
No, the SI86SM41BC-IS1 uses RF-based on/off keying modulation and requires no startup initialization sequence. Outputs become valid within 0.3 ms after VDD exceeds UVLO+ (2.10–2.25 V), with internal 100 kΩ pulldown ensuring defined low state until stabilization - a key advantage over optocoupler and pulse-based isolators.
How does the SMb pin function in the SI86SM41BC-IS1?
The SMb pin on the SI86SM41BC-IS1 is an active-low sleep mode control input. When driven low, it disables all transmitter circuits and places B1–B4 outputs in high-impedance state while drawing only 750 µA per side. A dedicated monitoring channel remains active to detect rising edge on SMb and restore full operation within microseconds.
What is the default output state during power loss on the SI86SM41BC-IS1?
The SI86SM41BC-IS1 is configured as a default-low option (denoted by "L" in part number suffix). When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 hold low - a fail-safe behavior critical for preventing unintended actuation in motor control and battery management applications.
Which safety standards does the SI86SM41BC-IS1 comply with?
The SI86SM41BC-IS1 complies with UL 1577 (6000 VRMS), CSA 62368-1 and 60601-1, VDE 60747-17 (reinforced), and CQC GB4943.1. It is AEC-Q100 qualified for automotive use and supports AIAG PPAP documentation and IMDS/CAMDS reporting for Tier 1 automotive supply chain requirements.
SI86SM41BC-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:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 14ns, 14ns
- Pulse Width Distortion (Max):
- 2ns
- 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
SI86SM41BC-IS1 FAQ
1.How can I place an order for SI86SM41BC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM41BC-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 SI86SM41BC-IS1 reliable?
The price and inventory of SI86SM41BC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM41BC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86SM41BC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM41BC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM41BC-IS1?
SI86SM41BC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM41BC-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 SI86SM41BC-IS1?
For technical support, including SI86SM41BC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM41BC-IS1 requirements.
6.How does Aetrix verify that SI86SM41BC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86SM41BC-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 SI86SM41BC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86SM41BC-IS1?
All SI86SM41BC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM41BC-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 SI86SM41BC-IS1 part is unused and in its original packaging.
Return procedure for SI86SM41BC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM41BC-IS1 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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