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PC853X
Sharp Microelectronics
OPTOISOLATOR 5KV DARL 4DIP
12803 Pcs New Original In Stock
Optoisolator Darlington Output 5000Vrms 1 Channel
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Minimum 1
5.0 / 5.0
- (121 Ratings)
PC853X
Product Overview
7929379
DiGi Electronics Part Number
PC853X-DGManufacturer
Sharp Microelectronics
PC853X
Description
OPTOISOLATOR 5KV DARL 4DIPInventory
12803 Pcs New Original In Stock
Optoisolator Darlington Output 5000Vrms 1 Channel
Quantity
Minimum 1
Minimum 1
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PC853X 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
150mA
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 PC853X Product Specification (PDF)
HTML Datasheet
PC853X-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
425-1506-5
Standard Package
50
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Les produits sont de très bonne qualité et le personnel est toujours accueillant et serviable.
December 02, 2025
Die Versanddauer war auf den angegebenen Zeitraum genau, was für Zuverlässigkeit spricht.
December 02, 2025
価格競争力が高く、質の良い商品をお得に購入できました。スタッフの対応も暖かく、また利用したいと思います。
December 02, 2025
DiGee Electronics' logistics team is highly professional, ensuring rapid and accurate deliveries.
December 02, 2025
DiGi Electronics’ products integrate seamlessly with our systems, providing peace of mind and operational stability.
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Frequently Asked Questions (FAQ)
Can the PC853X optoisolator be safely used in a 240VAC industrial control circuit given its 5kV isolation rating and Darlington output, and what design precautions are necessary to avoid latch-up or thermal runaway?
While the PC853X provides a 5000Vrms isolation voltage suitable for 240VAC applications, its Darlington output structure introduces higher Vce(sat) (up to 1.2V) and increased power dissipation, raising thermal concerns under continuous load. To mitigate latch-up or thermal runaway, ensure the output transistor operates well below its 150mA limit with adequate derating—especially above 70°C ambient—and use a heatsink if switching inductive loads. Additionally, include a snubber network across the output to suppress voltage spikes from AC line transients, and verify creepage/clearance distances on the PCB exceed 8mm to maintain isolation integrity over time.
Is the PC853X a viable drop-in replacement for the Toshiba TLP521-1 in a legacy relay driver circuit, and what performance trade-offs should I expect?
The PC853X can mechanically and electrically replace the TLP521-1 in many through-hole 4-DIP applications due to similar pinout and isolation voltage, but key differences exist: the PC853X has a much higher minimum CTR (1000% vs. 50% for TLP521-1), enabling reliable switching at lower input currents, but its slower rise/fall times (100µs/20µs vs. ~3µs/4µs) may cause timing issues in high-frequency PWM or fast-switching relay circuits. Also, the PC853X’s non-RoHS status may disqualify it from new designs in regulated markets. Validate timing margins and confirm environmental compliance before committing to redesigns.
What are the risks of using the PC853X in high-temperature environments near its 100°C limit, particularly regarding CTR degradation and long-term reliability?
Operating the PC853X near its 100°C maximum junction temperature significantly accelerates CTR degradation over time due to thermal stress on the internal phototransistor. Although the datasheet specifies operation down to -30°C, sustained high temperatures reduce carrier mobility and increase dark current, potentially causing premature failure or loss of signal integrity. To ensure reliability, derate the forward current (If) by at least 50% above 85°C and avoid continuous operation at peak output current. Implement thermal monitoring or airflow if the application exceeds 90°C ambient, and consider newer RoHS-compliant alternatives like the Broadcom ACPL-217 for improved thermal stability.
How does the PC853X’s Darlington output affect switching speed in a zero-crossing detection circuit, and can it be compensated without changing the optoisolator?
The PC853X’s Darlington output inherently slows switching due to stored charge in the dual-transistor configuration, resulting in typ. 100µs rise time that can blur zero-crossing edges and introduce phase errors in precision timing circuits. While you cannot change the internal structure, you can mitigate this by adding a pull-down resistor (1–10kΩ) at the output to accelerate turn-off and using a Schmitt-trigger buffer (e.g., 74HC14) to clean up the signal. However, for accurate zero-crossing detection, consider faster alternatives like the Vishay IL7550S with MOSFET output and nanosecond-scale response, especially if timing jitter must be below 10µs.
Given that the PC853X is obsolete and non-RoHS, what are the strategic risks of continuing to use it in new product designs, and which modern equivalents offer better lifecycle support?
Continuing to design with the obsolete, non-RoHS PC853X poses significant supply chain and compliance risks—especially in EU, Japan, and California markets where RoHS is mandatory. With no new production expected, long-term availability depends on dwindling distributor stock (currently ~12k units), increasing the risk of counterfeit parts or sudden obsolescence. For new designs, migrate to modern equivalents like the Broadcom ACPL-217 (5kV isolation, RoHS, SMT/DIP options) or Everlight EL817C (lower cost, similar specs), both offering active lifecycle support, better CTR stability, and improved switching performance. If legacy compatibility is required, secure a last-time buy and document a sunset plan.
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.
PC853X CAD Models
Sharp Microelectronics PC853X PCB symbols & footprints
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