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PC844X
Sharp Microelectronics
OPTOISOLTR 5KV 4CH TRANS 16-DIP
5850 Pcs New Original In Stock
Optoisolator Transistor Output 5000Vrms 4 Channel 16-DIP
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5.0 / 5.0
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PC844X
Product Overview
7929575
DiGi Electronics Part Number
PC844X-DGManufacturer
Sharp Microelectronics
PC844X
Description
OPTOISOLTR 5KV 4CH TRANS 16-DIPInventory
5850 Pcs New Original In Stock
Optoisolator Transistor Output 5000Vrms 4 Channel 16-DIP
Quantity
Minimum 1
Minimum 1
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PC844X Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
-
Series
-
Product Status
Obsolete
Number of Channels
4
Voltage - Isolation
5000Vrms
Current Transfer Ratio (Min)
20% @ 1mA
Current Transfer Ratio (Max)
300% @ 1mA
Turn On / Turn Off Time (Typ)
-
Rise / Fall Time (Typ)
4µs, 3µs
Input Type
AC, DC
Output Type
Transistor
Voltage - Output (Max)
80V
Current - Output / Channel
50mA
Voltage - Forward (Vf) (Typ)
1.2V
Current - DC Forward (If) (Max)
50 mA
Vce Saturation (Max)
200mV
Operating Temperature
-30°C ~ 100°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Supplier Device Package
16-DIP
Datasheet & Documents
Datasheets
Download PC844X Product Specification (PDF)
HTML Datasheet
PC844X-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.49.8000
Additional Information
Other Names
425-1494-5
Standard Package
25
Alternative Parts
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Order fulfillment is consistently prompt, reflecting an efficient supply chain.
December 02, 2025
The honesty and transparency in their pricing keep me coming back.
December 02, 2025
Their customer care team is always approachable and helpful.
December 02, 2025
I budget confidently knowing I get excellent value from DiGi Electronics—quality, packaging, and price.
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Frequently Asked Questions (FAQ)
Can I replace a failing PC844X optoisolator with the K844P in an existing industrial control design without modifying the current limiting resistors on the input side?
Yes, the K844P can generally substitute for the PC844X in most designs, but caution is required. Both have similar current transfer ratio (CTR) ranges, but the K844P may have slightly lower CTR at low input currents. Since the PC844X has a typical forward voltage (Vf) of 1.2V, confirm that your input drive circuit supplies sufficient forward current (typically 5–10mA) under worst-case conditions. If using marginal biasing, recalculate resistor values to ensure the K844P remains saturated under temperature extremes and aging, especially in high-reliability applications where CTR degradation could lead to failed signal transmission.
What design risks should I be aware of when using the PC844X in a high-temperature environment near its 100°C operating limit?
When operating the PC844X near its 100°C maximum ambient temperature, the primary risk is accelerated LED degradation, which reduces current transfer ratio (CTR) over time. This can lead to output transistor insufficient drive, especially in marginal designs. To mitigate this, design with a higher initial CTR margin (e.g., use 50% of min CTR from the datasheet), reduce operating current to minimum required levels, and avoid continuous DC input. Additionally, ensure PCB layout includes thermal relief and avoid placing near high-power components to reduce localized heating, which could push junction temperatures beyond rated limits.
Is the PC844X suitable for replacing solid-state relays in AC load switching applications, given its 80V max output voltage?
No, the PC844X is not suitable for direct AC load switching despite its 5000Vrms isolation. Its 80V maximum output voltage (Vce) limits it to low-voltage DC switching applications, such as signal isolation in microcontroller interfaces or PLC input modules. Exceeding 80V on the output side—even transiently—can cause breakdown. For AC load switching, use the PC844X as a control stage to drive a discrete power transistor or SSR driver, but never as a direct replacement for solid-state relays in line-voltage circuits.
How does the PC844X's RoHS non-compliance impact design-in for new medical or consumer electronics applications?
The PC844X's RoHS non-compliance creates regulatory and lifecycle risks for new medical or consumer products intended for markets requiring RoHS adherence (e.g., EU, China). While the device may still function correctly, using it can violate compliance standards, potentially leading to import rejection or certification failure. Additionally, as the part is marked as obsolete, supply chain continuity is at risk. For new designs, evaluate drop-in replacements like the LTV-844 (RoHS-compliant, similar specs) and update schematics accordingly to ensure long-term manufacturability and compliance.
What PCB layout practices should I follow when integrating the PC844X to maintain its 5000Vrms isolation rating in a high-noise industrial system?
To maintain the PC844X’s 5000Vrms isolation, ensure creepage and clearance distances across the 16-DIP package are strictly observed—typically at least 7.5mm between input and output side traces on the PCB. Use a split ground plane (no copper bridging across the package centerline), and avoid routing high-voltage traces near the input pins. Additionally, incorporate a slot under the PC844X in multilayer boards to prevent conduction through inner layers. These measures prevent arcing and leakage currents, especially in dusty or humid industrial environments where contamination can reduce effective isolation over time.
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.
PC844X CAD Models
Sharp Microelectronics PC844X PCB symbols & footprints
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