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PC852X
Sharp Microelectronics
OPTOISOLATOR 5KV DARL 4DIP
4269 Pcs New Original In Stock
Optoisolator Darlington Output 5000Vrms 1 Channel
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Minimum 1
5.0 / 5.0
- (470 Ratings)
PC852X
Product Overview
7929756
DiGi Electronics Part Number
PC852X-DGManufacturer
Sharp Microelectronics
PC852X
Description
OPTOISOLATOR 5KV DARL 4DIPInventory
4269 Pcs New Original In Stock
Optoisolator Darlington Output 5000Vrms 1 Channel
Quantity
Minimum 1
Minimum 1
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PC852X Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
-
Series
-
Product Status
Obsolete
Number of Channels
1
Voltage - Isolation
5000Vrms
Current Transfer Ratio (Min)
1000% @ 1mA
Current Transfer Ratio (Max)
-
Turn On / Turn Off Time (Typ)
-
Rise / Fall Time (Typ)
100µs, 20µs
Input Type
DC
Output Type
Darlington
Voltage - Output (Max)
350V
Current - Output / Channel
40mA
Voltage - Forward (Vf) (Typ)
1.2V
Current - DC Forward (If) (Max)
50 mA
Vce Saturation (Max)
1.2V
Operating Temperature
-30°C ~ 100°C
Mounting Type
Through Hole
Package / Case
4-DIP (0.300", 7.62mm)
Datasheet & Documents
Datasheets
Download PC852X Product Specification (PDF)
HTML Datasheet
PC852X-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
425-1773-5
Standard Package
50
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
이전부터 계속 이용 중인데, 후속 지원도 뛰어나고 배송도 언제나 정확히 도착합니다.
December 02, 2025
配送速度令人印象深刻，包裝做得非常仔細，值得讚賞！
December 02, 2025
保証やサポート体制が整っており、購入後も安心して使用できています。
December 02, 2025
The quality of their products supports my business needs effectively.
December 02, 2025
I am impressed with their rapid shipping and efficient after-sales assistance.
December 02, 2025
Good value for money—DiGi Electronics offers quality products at prices that are hard to beat.
December 02, 2025
Their focus on sustainability doesn't compromise affordability—well done.
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Frequently Asked Questions (FAQ)
Can the PC852X be used as a drop-in replacement for the LTV-852 in an existing industrial control design, and what are the key design-in risks?
While the PC852X and LTV-852 share similar Darlington output topology and 5000Vrms isolation ratings, the PC852X is marked as RoHS non-compliant and obsolete, which introduces long-term supply chain and compliance risks. Electrically, both offer comparable CTR (1000% minimum @ 1mA) and 40mA output current, but you must verify the PC852X's higher Vce(sat) of 1.2V doesn’t affect load switching efficiency in power-sensitive applications. Additionally, ensure your PCB layout can handle the through-hole 4-DIP package and confirm temperature margins, as sustained operation near 100°C may degrade CTR over time. Consider adding a base resistor to limit leakage current, a common issue with Darlington optocouplers like the PC852X in high-noise environments.
What are the reliability concerns when using the PC852X in a high-temperature industrial environment near its 100°C operating limit?
Operating the PC852X near its maximum 100°C rating increases the risk of CTR degradation over time due to LED aging and thermal stress on the Darlington pair. Since the PC852X lacks a specified maximum CTR degradation curve, derate the input current by at least 20% (e.g., use 0.8mA instead of 1mA) to extend lifespan. Also, ensure adequate PCB heat dissipation around the 4-DIP package and avoid placing it near heat-generating components. Consider conformal coating to mitigate thermal cycling effects and monitor output saturation voltage trends during reliability testing to predict end-of-life failure.
How does the PC852X compare to the FOD852 for new designs requiring 5kV isolation and high noise immunity?
The PC852X and FOD852 both provide 5000Vrms isolation, but the FOD852 uses a phototransistor with a faster interface and is RoHS compliant, while the PC852X’s Darlington output gives higher CTR at low input currents—beneficial in low-power sensing. However, the PC852X’s 100µs turn-on time limits switching speed, making it unsuitable for high-frequency signals where the FOD852 excels. For new designs, the PC852X’s obsolete status and RoHS non-compliance pose manufacturing and compliance risks. Use the PC852X only in legacy repair scenarios; otherwise, reevaluate with RoHS-compliant alternatives like the FOD852 and ensure signal timing budgets accommodate slower Darlington switching in the PC852X.
What are the circuit design trade-offs when driving a 350V load with the PC852X’s Darlington output stage?
Driving a 350V load at the PC852X’s maximum Vce puts the device near its breakdown limit, increasing risk of voltage transients causing failure. Always use a snubber circuit or transient voltage suppression (TVS) diode across the output to clamp inductive kickback, especially in relay or solenoid drive applications. The Darlington configuration inherently has high CTR but suffers from high Vce(sat) (up to 1.2V), leading to increased power dissipation at higher output currents. Derate the 40mA max current to 25–30mA under high-voltage conditions to manage thermal stress. Consider adding a flyback diode and verify MSL 1 moisture resistance doesn’t compromise long-term reliability in humid environments.
Is the PC852X suitable for replacing PS2535-1-A in a legacy medical isolation circuit, and what safety certifications should be validated?
The PC852X matches the PS2535-1-A’s 5000Vrms isolation and Darlington output, making it a functional electrical substitute in legacy medical designs. However, the PC852X’s RoHS non-compliance and lack of updated safety certifications (e.g., UL, CSA, VDE) pose regulatory risks, especially in patient-connected medical equipment requiring IEC 60601-1 compliance. Verify if the existing design’s certification allows substitution under the same approval. Also, the PC852X’s 100µs rise time may affect system response in time-critical monitoring circuits. For medical use, prefer currently manufactured, certified optocouplers; if using PC852X, conduct full creepage and clearance inspection on the 4-DIP package and validate isolation integrity via HIPOT testing.
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.
PC852X CAD Models
Sharp Microelectronics PC852X PCB symbols & footprints
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