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Skyworks Solutions Inc. SI86S631BE-AS2R
- Part No.:
- SI86S631BE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S631BE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 3 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:1,879
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Product details
Overview
SI86S631BE-AS2R from Skyworks Solutions is a 3-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and dual 2.25–5.5 V supply operation. It features tri-state outputs with enable, selectable fail-safe default-high/low output, and operates across –40 to 125 °C for use in isolated motor control gate drivers and battery management system signal interfaces.
For engineers reviewing the SI86S631BE-AS2R datasheet, SI86S631BE-AS2R pinout, SI86S631BE-AS2R application, or SI86S631BE-AS2R equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (AEC-Q100, IEC 60747-17), and real-world implementation context for high-noise industrial and EV traction inverter designs.
Technical Context
The SI86S631BE-AS2R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity (100 kV/µs CMTI). Its architecture supports independent undervoltage lockout (UVLO) and reset on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It integrates Schmitt-trigger + CMOS threshold inputs for noise rejection, tri-state output control via EN1/EN2, and failsafe output state selection (default-high or default-low) determined by ordering option. The device uses no external components beyond 0.1 µF and 10 µF bypass capacitors per side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed SPI, isolated ADC/DAC interfaces, and real-time motor control feedback loops. |
| Isolation Rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, VDE 60747-17, and CSA 62368-1 for industrial and automotive safety-critical systems. |
| Propagation Delay | 10 ns (typ) - enables precise timing alignment in gate driver circuits and fast-loop digital power controllers. |
| Supply Voltage | 2.25–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Operating Temp | –40 to 125 °C - qualified for under-hood automotive applications including onboard chargers and traction inverters. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dV/dt environments like IGBT/SiC switching nodes. |
| AEC-Q100 | Qualified - manufactured using automotive-specific process flows with PPAP, IMDS, and CAMDS support for OEM compliance. |
Pinout & Package
SI86S631BE-AS2R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin functions are validated per Figure 1 and Table 1 of Skyworks datasheet 206553B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypassing close to pins 1 and 16. |
| A1–A3 | Side A digital inputs/outputs | Three unidirectional channels from Side A to Side B; compatible with CMOS/Schmitt-trigger logic levels. |
| EN1 | Side A output enable | Active-high control: drives all Side A outputs into high-impedance when low - used for bus arbitration or power sequencing. |
| Isolation Barrier | Internal die separation | Robust semiconductor barrier providing 6000 VRMS withstand, 100 kV/µs CMTI, and reinforced insulation certification. |
| B1–B3 | Side B digital outputs/inputs | Three isolated output channels referenced to VDD2/GND2; default state (high/low) set by part number suffix. |
| EN2 | Side B output enable | Active-high control: places Side B outputs in high-Z - enables bidirectional bus sharing or sleep-mode coordination. |
| VDD2, GND2 | Side B power domain | Independent supply domain for isolated side; supports separate 3.3 V or 5 V rails with full galvanic separation. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot delay - outputs become valid within 0.3 ms of VDD stabilization, critical for fast-restart power systems. |
| Selectable fail-safe mode | Ordering option determines default output state during VDD1 loss - "E" suffix = default-high, "B" = default-low, ensuring safe gate driver or ADC interface behavior. |
| Tri-state outputs with enable | EN1/EN2 pins provide synchronous, side-specific high-impedance control - simplifies shared-bus topologies and reduces contention in multi-isolator systems. |
| High electromagnetic immunity | 100 kV/µs common-mode transient immunity (CMTI) - maintains signal integrity near SiC/IGBT switching nodes without external filtering. |
| Schmitt trigger + CMOS inputs | Combined input threshold structure rejects >36 ns noise pulses - eliminates false triggering in noisy motor drive or battery pack monitoring environments. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and three-phase inverter gate drivers in servo drives and HVAC compressors. IC Role / Device Role / Timing Role: Unidirectional signal isolator for high-side/low-side gate drive enable signals with <10 ns propagation delay matching. Use Value: Enables precise dead-time control and prevents shoot-through faults by maintaining sub-15 ns channel-to-channel skew under 125 °C operation. |
Use Scenario: Isolating cell voltage measurement data and balancing command signals between BMS controller and high-voltage battery stack. IC Role / Device Role / Timing Role: Reinforced isolator for SPI communication between isolated ADCs (e.g., AD7280A) and MCU across 400–800 V domains. Use Value: Delivers 6000 VRMS isolation and AEC-Q100 qualification required for ASIL-C functional safety compliance in EV battery packs. |
| Isolated Switch-Mode Power Supply | Traction Inverter Control |
|
Use Scenario: Providing feedback isolation for secondary-side voltage/current sensing in LLC resonant converters and DC-DC modules. IC Role / Device Role / Timing Role: High-speed digital isolator for opto-replacement in isolated error amplifier and PWM comparator interfaces. Use Value: Supports 150 Mbps data rate to transmit fast transient overvoltage/overcurrent flags with <10 ns latency, improving fault response time. |
Use Scenario: Isolating torque command, phase current feedback, and fault status between vehicle controller and inverter ECU in BEV powertrains. IC Role / Device Role / Timing Role: Automotive-grade isolator for CAN gateway interfaces and isolated gate driver enable lines in 800 V traction inverters. Use Value: Meets IEC 60747-17 reinforced insulation and 125 °C ambient operation needed for under-hood placement near power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3401BRWZ | 4-channel, 50 Mbps, 2.5–5.5 V, 2500 VRMS isolation, SOIC-16WB | Lacks AEC-Q100 qualification and 6000 VRMS rating; lower CMTI (50 kV/µs) | Use where cost sensitivity outweighs automotive qualification and higher isolation voltage requirements. |
| ISO6731FDWR | 3-channel, 50 Mbps, 2.25–5.5 V, 5000 VRMS, SOIC-16 | Lower isolation rating (5000 VRMS), no fail-safe default-high option, non-automotive grade | Acceptable for industrial automation where 6000 VRMS and AEC-Q100 are not mandated. |
Compared with ADUM3401BRWZ and ISO6731FDWR, SI86S631BE-AS2R provides 3× higher data rate, 20% greater isolation voltage, and automotive-grade reliability - making it optimal for next-generation EV inverters and high-density industrial servo drives requiring zero-startup-delay operation.
Availability
SI86S631BE-AS2R 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 SI86S631BE-AS2R 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 Si86S6xx family was designed specifically for high-reliability, high-noise industrial and automotive applications - delivering reinforced isolation, AEC-Q100 qualification, and RF-based architecture for zero-initialization digital signal transfer.
FAQ
What is the isolation voltage rating of SI86S631BE-AS2R and which safety standards does it meet?
SI86S631BE-AS2R has a 6000 VRMS isolation rating for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced insulation), CSA 62368-1, and CQC GB4943.1. This rating is achieved in the WB SOIC-16 package and supports designs requiring reinforced insulation for industrial and automotive end-equipment.
Does SI86S631BE-AS2R require external components for basic operation?
No, SI86S631BE-AS2R requires only two bypass capacitors per side: 0.1 µF ceramic and 10 µF bulk capacitor placed near VDD1/GND1 and VDD2/GND2. No pull-ups, level shifters, or initialization firmware are needed - the RF-based architecture enables immediate operation after power-on.
How does the fail-safe output mode work on SI86S631BE-AS2R?
The "E" in SI86S631BE-AS2R denotes default-high fail-safe mode: when VDD1 is unpowered but VDD2 remains active, outputs B1–B3 drive high. This behavior is factory-configured and ensures predictable gate driver or ADC interface states during primary-side power loss - critical for functional safety.
What is the maximum data rate supported by SI86S631BE-AS2R and how is timing performance characterized?
SI86S631BE-AS2R supports up to 150 Mbps data rate with typical propagation delay of 10 ns and pulse width distortion of 3.5 ns. These values are measured at 5 V supply and –40 to 125 °C, enabling precise timing in high-speed isolated SPI, encoder, and PWM interfaces without added jitter or skew.
Is SI86S631BE-AS2R qualified for automotive applications and what documentation is available?
Yes, SI86S631BE-AS2R is AEC-Q100 qualified and supports AIAG-compliant PPAP documentation, IMDS, and CAMDS listings. It is built using automotive-specific manufacturing flows to ensure low defectivity and robustness for onboard chargers, battery management systems, and traction inverters.
SI86S631BE-AS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- 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
SI86S631BE-AS2R FAQ
1.How can I place an order for SI86S631BE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S631BE-AS2R 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 SI86S631BE-AS2R reliable?
The price and inventory of SI86S631BE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S631BE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S631BE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S631BE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S631BE-AS2R?
SI86S631BE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S631BE-AS2R 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 SI86S631BE-AS2R?
For technical support, including SI86S631BE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S631BE-AS2R requirements.
6.How does Aetrix verify that SI86S631BE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S631BE-AS2R 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 SI86S631BE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S631BE-AS2R?
All SI86S631BE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S631BE-AS2R, 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 SI86S631BE-AS2R part is unused and in its original packaging.
Return procedure for SI86S631BE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S631BE-AS2R Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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