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PC357N0
Sharp Microelectronics
OPTOISO 3.75KV TRANS 4-MINI-FLAT
20389 Pcs New Original In Stock
Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (297 Ratings)
PC357N0
Product Overview
7927395
DiGi Electronics Part Number
PC357N0-DGManufacturer
Sharp Microelectronics
PC357N0
Description
OPTOISO 3.75KV TRANS 4-MINI-FLATInventory
20389 Pcs New Original In Stock
Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
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PC357N0 Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
-
Series
-
Product Status
Obsolete
Number of Channels
1
Voltage - Isolation
3750Vrms
Current Transfer Ratio (Min)
80% @ 5mA
Current Transfer Ratio (Max)
600% @ 5mA
Turn On / Turn Off Time (Typ)
-
Rise / Fall Time (Typ)
4µs, 3µs
Input Type
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
Surface Mount
Package / Case
4-SMD, Gull Wing
Supplier Device Package
4-Mini-Flat
Datasheet & Documents
Datasheets
Download PC357N0 Product Specification (PDF)
HTML Datasheet
PC357N0-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
425-1329-1
425-1329-2
Standard Package
3,000
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
Ils proposent une assistance clientèle exceptionnelle, avec une vraie écoute et des solutions rapides.
December 02, 2025
I've been impressed with their reasonable prices and eco-friendly packaging choices.
December 02, 2025
Their after-sales support ensures minimal disruptions in our operations.
December 02, 2025
I highly recommend DiGi Electronics for their swift support and delivery.
December 02, 2025
They offer budget-friendly options along with a welcoming and supportive customer service team.
December 02, 2025
Excellent shipping efficiency and a support team that genuinely cares.
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Frequently Asked Questions (FAQ)
Can I use the PC357N0 to replace an HCPL-181-00CE in a 24V industrial input module without redesigning the PCB layout?
The PC357N0 is not a direct drop-in replacement for the HCPL-181-00CE due to differences in pinout, package dimensions, and electrical characteristics. While both are 4-pin SMD optoisolators with similar isolation voltage (3.75 kVrms), the PC357N0 has a higher typical forward voltage (1.2V vs. ~1.0V) and different CTR behavior, which may affect biasing. Additionally, the PC357N0 uses a 4-Mini-Flat gull-wing package with tighter lead spacing, so PCB pad compatibility must be verified. For reliable operation in a 24V system, recalculate the input resistor to maintain 5–10mA forward current and validate signal integrity under load. Always perform functional and isolation testing before full deployment.
What are the risks of using the PC357N0 in a high-temperature automotive application near the 100°C limit, especially regarding CTR degradation over time?
Operating the PC357N0 near its maximum rated temperature of 100°C significantly accelerates LED aging and CTR degradation, potentially causing premature failure in safety-critical automotive systems. The current transfer ratio (CTR) can drop by over 30% after 1,000 hours at elevated temperatures, leading to insufficient output drive. To mitigate risk, derate the forward current to ≤30mA, ensure adequate PCB copper pour for thermal dissipation, and consider periodic functional checks. For long-term reliability above 85°C, evaluate alternatives like the FODM121A, which offers better high-temperature CTR stability and is AEC-Q101 qualified.
How does the PC357N0 compare to the FODM124 for isolating a 5V microcontroller signal in a noisy factory environment with long trace runs?
While both the PC357N0 and FODM124 offer 3.75 kVrms isolation, the FODM124 has superior common-mode transient immunity (CMTI) and faster rise/fall times, making it more suitable for noisy industrial environments with long PCB traces that act as antennas. The PC357N0’s slower response (4µs rise, 3µs fall) increases susceptibility to signal distortion and timing errors in high-interference zones. If redesign is feasible, the FODM124 provides better noise resilience; otherwise, when using the PC357N0, add a low-pass RC filter at the output and minimize trace length between the optocoupler and MCU to reduce coupling of EMI.
Is it safe to drive a 50mA relay coil directly from the PC357N0’s output transistor without additional buffering?
Although the PC357N0 is rated for 50mA output current, driving a relay coil directly risks exceeding safe operating area (SOA) limits due to inductive kickback and inrush current. Relay coils often draw peak currents exceeding 50mA during activation and generate voltage spikes that can damage the output transistor. To protect the PC357N0, use a flyback diode across the relay coil and consider adding a small NPN buffer transistor (e.g., MMBT2222) to handle the load. This improves reliability and extends the optoisolator’s lifespan, especially in repetitive switching applications.
Given that the PC357N0 is obsolete and RoHS non-compliant, what are the long-term supply and compliance risks if I continue using it in new designs?
Continuing to use the PC357N0 in new designs poses significant supply chain and regulatory risks. As an obsolete, non-RoHS component, future availability is uncertain, and remaining stock may be counterfeit or degraded. Non-RoHS status prevents use in EU markets and many global OEM platforms requiring environmental compliance. For new designs, migrate to a modern alternative like the FODM121CR2, which is RoHS-compliant, in active production, and offers similar performance with improved reliability. If legacy support is required, secure last-time buy quantities and implement a sunset plan with a qualified second-source optoisolator to avoid line-down scenarios.
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.
PC357N0 CAD Models
Sharp Microelectronics PC357N0 PCB symbols & footprints
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