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PC3H4
Sharp Microelectronics
OPTOISO 2.5KV TRANS 4-MINI-FLAT
24017 Pcs New Original In Stock
Optoisolator Transistor Output 2500Vrms 1 Channel 4-Mini-Flat
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (150 Ratings)
PC3H4
Product Overview
7927355
DiGi Electronics Part Number
PC3H4-DGManufacturer
Sharp Microelectronics
PC3H4
Description
OPTOISO 2.5KV TRANS 4-MINI-FLATInventory
24017 Pcs New Original In Stock
Optoisolator Transistor Output 2500Vrms 1 Channel 4-Mini-Flat
Quantity
Minimum 1
Minimum 1
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PC3H4 Technical Specifications
Category
Optoisolators, Transistor, Photovoltaic Output Optoisolators
Packaging
-
Series
-
Product Status
Obsolete
Number of Channels
1
Voltage - Isolation
2500Vrms
Current Transfer Ratio (Min)
20% @ 1mA
Current Transfer Ratio (Max)
400% @ 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
Surface Mount
Package / Case
4-SOIC (0.173", 4.40mm Width)
Supplier Device Package
4-Mini-Flat
Datasheet & Documents
Datasheets
Download PC3H4 Product Specification (PDF)
HTML Datasheet
PC3H4-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
425-1341-2
425-1341-1
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
빠르고 정확한 배송, 탁월한 포장 기술에 감사드립니다.
December 02, 2025
我非常欣賞他們準時的出貨時間與用心的包裝設計。
December 02, 2025
I loved how their logistics updates were detailed and timely, making the whole process effortless.
December 02, 2025
DiGi Electronics provides a great balance of affordability and dependable quality, making them my go-to source.
December 02, 2025
Their devices are built to last; I’ve had mine for over two years with minimal performance drop.
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Frequently Asked Questions (FAQ)
Can I use the Sharp Microelectronics PC3H4 optoisolator to replace a Vishay SFH6286-3 in a 24V industrial input module, and what design risks should I anticipate?
While the PC3H4 and SFH6286-3 both offer 2500Vrms isolation and similar forward voltage (1.2V typ), the PC3H4 has a lower minimum current transfer ratio (20% vs. 50% for SFH6286-3 at 1mA), which may result in insufficient output drive under low-input-current conditions. Additionally, the PC3H4 is marked obsolete, raising long-term supply concerns. If substituting, verify that your input circuit can provide enough forward current to maintain reliable CTR at the PC3H4’s lower bound, and consider adding a pull-down resistor on the output to mitigate leakage-induced false triggering—especially critical in high-noise industrial environments.
What are the thermal and reliability implications of operating the PC3H4 near its maximum junction temperature in a sealed automotive control unit?
The PC3H4 supports an operating temperature range of -30°C to 100°C, but sustained operation near 100°C significantly accelerates LED degradation, reducing CTR over time and potentially causing premature failure. In sealed automotive applications with limited airflow, thermal coupling to adjacent components can push the internal junction beyond safe limits. To mitigate risk, maintain adequate PCB copper pour under the device for heat spreading, avoid placing heat-generating components nearby, and derate forward current by at least 20% when ambient temperatures exceed 85°C. Given its obsolete status, consider qualifying a modern RoHS-compliant alternative like the Broadcom ACPL-217 for improved thermal resilience and lifecycle support.
How does the PC3H4’s non-RoHS compliance affect its use in new consumer electronics designs targeting EU markets?
The PC3H4 is RoHS non-compliant, meaning it contains restricted substances like lead, making it unsuitable for new consumer electronics sold in the European Union under Directive 2011/65/EU. Even if functionally adequate, using this part would require applying for a costly and time-consuming exemption (e.g., under Annex III for specific applications), which is rarely granted for general-purpose optoisolators. For new designs, replace the PC3H4 with a compliant equivalent such as the onsemi FODM8061 or Toshiba TLP291-4, both offering comparable isolation voltage, package footprint, and full RoHS adherence—eliminating regulatory risk and simplifying global distribution.
Is the PC3H4 suitable for high-speed digital signal isolation in a 100kHz PWM motor control application, and how do its timing characteristics compare to modern alternatives?
The PC3H4 has typical rise/fall times of 4µs and 3µs, resulting in a propagation delay that limits reliable operation below approximately 50kHz—making it marginal for clean 100kHz PWM signals due to pulse distortion and duty cycle errors. Modern alternatives like the Broadcom HCPL-0723 or Silicon Labs Si8711 offer sub-100ns switching speeds and are better suited for high-frequency digital isolation. If you must use the PC3H4, implement dead-time compensation in firmware and validate signal integrity with an oscilloscope under worst-case load conditions. However, given its obsolete status and performance limitations, migrating to a faster, actively supported isolator is strongly recommended for robust motor control designs.
What layout and soldering precautions are critical when replacing a through-hole optoisolator with the surface-mount PC3H4 in a high-vibration industrial environment?
The PC3H4’s 4-Mini-Flat (4-SOIC) package is surface-mount only and more susceptible to mechanical stress than traditional DIP optoisolators. In high-vibration settings, ensure the PCB has sufficient mechanical support (e.g., conformal coating or potting) and avoid placing the PC3H4 near board edges or connectors where flexure concentrates stress. Use a symmetrical solder pad layout with thermal relief to prevent tombstoning during reflow, and adhere to MSL 1 handling (unlimited floor life, but still follow standard ESD protocols). Verify joint integrity with X-ray inspection if possible, and consider adding strain relief via anchoring traces or nearby stiffeners—especially since the PC3H4 is obsolete and field replacements may be difficult to source.
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.
PC3H4 CAD Models
Sharp Microelectronics PC3H4 PCB symbols & footprints
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