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PS9122-V-F3-AX
Renesas Electronics Corporation
HI-SPEED OPTOCPLR SO-5
5456 Pcs New Original In Stock
Logic Output Optoisolator 1Mbps Open Collector 3750Vrms 1 Channel 15kV/µs CMTI 5-SO
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5.0 / 5.0
- (295 Ratings)
PS9122-V-F3-AX
Product Overview
9363192
DiGi Electronics Part Number
PS9122-V-F3-AX-DGManufacturer
Renesas Electronics Corporation
PS9122-V-F3-AX
Description
HI-SPEED OPTOCPLR SO-5Inventory
5456 Pcs New Original In Stock
Logic Output Optoisolator 1Mbps Open Collector 3750Vrms 1 Channel 15kV/µs CMTI 5-SO
Quantity
Minimum 1
Minimum 1
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PS9122-V-F3-AX Technical Specifications
Category
Optoisolators, Logic Output Optoisolators
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Number of Channels
1
Inputs - Side 1/Side 2
1/0
Voltage - Isolation
3750Vrms
Common Mode Transient Immunity (Min)
15kV/µs
Input Type
DC
Output Type
Open Collector
Current - Output / Channel
20 mA
Data Rate
1Mbps
Propagation Delay tpLH / tpHL (Max)
700ns, 500ns
Rise / Fall Time (Typ)
60ns, 70ns
Voltage - Forward (Vf) (Typ)
1.6V
Current - DC Forward (If) (Max)
25mA
Voltage - Supply
7V
Operating Temperature
-40°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
6-SOIC (0.173", 4.40mm Width), 5 Leads
Supplier Device Package
5-SO
Base Product Number
PS9122
Datasheet & Documents
HTML Datasheet
PS9122-V-F3-AX-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.49.8000
Additional Information
Other Names
559-PS9122-V-F3-AXCT
559-PS9122-V-F3-AXTR
559-PS9122-V-F3-AXDKR
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
商品のカテゴリ分けが明確で、必要なものがすぐに見つかりました。
грудня 02, 2025
I've had a positive experience with their products, which are both reliable and budget-friendly.
грудня 02, 2025
DiGi Electronics always exceeds our expectations with their after-sales care.
грудня 02, 2025
Their low prices and sustainable packaging demonstrate their dedication to customers and the environment.
грудня 02, 2025
Shipping has been consistently smooth, making my shopping experience hassle-free.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the PS9122-V-F3-AX in high-noise industrial environments, and how can CMTI be effectively leveraged?
When integrating the PS9122-V-F3-AX in electrically noisy systems—such as motor drives or PLCs—its 15kV/µs minimum Common Mode Transient Immunity (CMTI) is critical to prevent signal corruption across the isolation barrier. A key risk is exceeding the transient immunity limit due to fast switching in adjacent power stages (e.g., IGBTs or SiC MOSFETs), which can cause momentary logic errors. To mitigate this, ensure tight PCB layout practices: minimize trace lengths on the output side, use a solid ground plane on the receiver side, and place the PS9122-V-F3-AX close to the controller IC. Additionally, avoid shared return paths between high-current and signal circuits. The open-collector output requires a pull-up resistor; selecting a lower value (e.g., 1kΩ to 4.7kΩ) improves noise margin but increases power dissipation—balance this based on your system's data rate and thermal constraints.
Can the PS9122-V-F3-AX replace obsolete high-speed optocouplers like the HCPL-2601 or HCPL-2631 in existing designs, and what adjustments are needed?
Yes, the PS9122-V-F3-AX can serve as a functional replacement for the HCPL-2601 and HCPL-2631 in most 1Mbps logic isolation applications, offering improved CMTI (15kV/µs vs. 10kV/µs) and a similar 5-SOIC footprint. However, key differences must be addressed: the PS9122-V-F3-AX has an open-collector output, while the HCPL-2631 uses a totem-pole output, meaning an external pull-up resistor is required on VCC2 (up to 7V) when replacing the latter. Also, the forward current requirement may differ—verify that your driver circuit can source at least 5mA (recommended) and does not exceed the 25mA maximum. Thermal performance is similar, but confirm board-level airflow or derating if operating above 85°C. Review propagation delay symmetry (tpLH 700ns max vs tpHL 500ns max) in timing-critical feedback loops.
How does the PS9122-V-F3-AX perform in battery-powered or low-voltage systems, and what supply voltage considerations should be made?
The PS9122-V-F3-AX supports a supply voltage (VCC2) up to 7V, making it compatible with common 3.3V and 5V logic domains in portable and industrial equipment. However, in battery-powered systems nearing end-of-discharge (e.g., below 3V), the open-collector output may fail to drive logic-high levels reliably. Ensure the receiver-side supply stays above the minimum required by the downstream IC (e.g., MCU input high threshold). Also, the output current capability (20mA max) is sufficient for direct logic interfacing but not for driving heavier loads; use a buffer stage if needed. Note that propagation delay increases slightly at lower VCC—include margin in timing budgets for ultra-low-power modes. Monitor datasheet guidance on DC forward current (If) to maintain CTR over life—10mA is a robust design point.
What are the long-term reliability concerns with the PS9122-V-F3-AX in high-temperature applications, and how does it compare to digital isolators like Si86xx?
While the PS9122-V-F3-AX is rated for -40°C to 100°C operation, optocouplers inherently suffer from LED degradation over time, especially at elevated temperatures and high If. To ensure 10+ year reliability in industrial systems, operate the input LED at or below 10mA (not the 25mA max), and avoid sustained operation above 85°C ambient. Unlike digital isolators such as the Silicon Labs Si86xx series— which use capacitive coupling and offer higher CMTI (>50kV/µs) and better temperature stability— the PS9122-V-F3-AX may require derating in critical timing paths over life. However, it remains advantageous in systems requiring simple DC signal transfer without power-on initialization or clock dependency. Use the PS9122-V-F3-AX where proven opto reliability is acceptable and cost or EMI simplicity is prioritized over ultimate performance.
What are the critical PCB layout practices when integrating the PS9122-V-F3-AX to maintain isolation integrity and signal fidelity at 1Mbps?
To preserve the PS9122-V-F3-AX’s 3750Vrms isolation rating and 1Mbps performance, follow strict layout guidelines: maintain ≥7.5mm creepage and clearance distance between input and output side traces (per IEC 60664), especially on 2-layer boards. Use a split ground plane—keep input and output grounds separate, connecting only at a single system point. Route high-speed output traces as short as possible to reduce ringing; the 60ns/70ns rise/fall times can couple noise if routed near analog signals. Avoid drilling vias under the device body to prevent tracking. The 5-SO package has a >0.4mm insulation barrier width—ensure no soldermask voids or conductive debris bridges this. Finally, place decoupling capacitors (100nF X7R) close to VCC2 and GND2 pins to minimize ground bounce, which affects propagation delay consistency.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
PS9122-V-F3-AX CAD Models
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