PS2501-4-A CEL Phototransistor (Dual-In-Line Packages) In Stock
CEL PS2501-4-A is a 4-channel phototransistor optocoupler in a DIP-16 package with 5000 V isolation voltage and 300% current transfer ratio. Each channel supports up to 80 V collector-emitter breakdown, making it suitable for industrial signal isolation and motor control circuits.
- Manufacturer
- CEL
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- PS2501-4-A Datasheet PDF
- Category
- Phototransistor
- Price
- From $0.8250(MOQ 1)
- Temp Range
- -55.0°C to 100.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PS2501-4-A?
- 4 independent optocoupler channels in a single DIP-16 package with 5000 V minimum isolation voltage for robust galvanic isolation between high-voltage and low-voltage circuits
- 300% typical current transfer ratio (CTR) at 80 V VCEO enables efficient signal coupling from low-current LED inputs to transistor output loads without external amplification
- UL Recognized construction with lead-free (e6) compliance meets RoHS and industrial safety standards for use in IEC 60950 and UL 508 certified equipment
What is PS2501-4-A used for?
The PS2501-4-A is used in industrial programmable logic controllers and motor drive circuits to isolate 4 digital control signals simultaneously, protecting the low-voltage control logic from transient voltages on 24 V or 48 V industrial I/O buses. Its 5000 V isolation rating and 4-channel configuration are well suited for relay driver boards, solid-state relay input stages, and switched-mode power supply feedback loops. Medical and test equipment designers also use this device to meet creepage and clearance requirements in patient-safe circuits.
What are the specifications of PS2501-4-A?
| YTEOL | 0 |
| Additional Feature | UL RECOGNIZED |
| Coll-Emtr Bkdn Voltage-Min | 80V |
| Configuration | SEPARATE, 4 CHANNELS |
| Current Transfer Ratio-Nom | 300% |
| Dark Current-Max | 100nA |
| Forward Current-Max | 0.08A |
| Isolation Voltage-Max | 5000V |
| JESD-609 Code | e6 |
| Number of Elements | 4 |
| Optoelectronic Device Type | TRANSISTOR OUTPUT OPTOCOUPLER |
| Terminal Finish | Tin/Bismuth (Sn/Bi) |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.40.80.00 |
What are equivalent replacements for PS2501-4-A?
Compatible alternatives and drop-in replacements for PS2501-4-A:
Frequently Asked Questions
How does the PS2501-4-A's 5000 V isolation voltage and 4-channel configuration benefit industrial PLC input modules?
The 5000 V minimum isolation voltage allows the PS2501-4-A to withstand severe line transients and lightning surges on 24 V industrial field wiring without coupling noise into the microcontroller or FPGA logic running at 3.3 V or 5 V. Using all 4 channels in a single DIP-16 package reduces component count by 75% compared to single-channel alternatives, freeing board space and cutting BOM cost in high-channel-count PLC digital input cards.
What forward current limit and collector-emitter breakdown voltage must a designer respect when driving the PS2501-4-A LED input and switching a load?
Each input LED channel is rated for a maximum forward current of 80 mA, though typical operating point for 300% CTR is around 10 mA to 20 mA at 1.2 V forward voltage. The phototransistor output can block up to 80 V collector-emitter (VCEO) and handle dark currents as low as 100 nA, making it suitable for switching logic signals or driving a resistive load up to 24 V from a 5 V-referenced output stage.
When is a quad optocoupler like the PS2501-4-A a more efficient design choice than four individual single-channel optocouplers for a 4-axis stepper motor controller?
A 4-axis stepper motor controller needs to isolate 4 step or direction signals from the PC or motion controller. Using the PS2501-4-A consolidates all 4 isolation channels into one 16-pin DIP footprint of approximately 20 mm x 7.5 mm, compared to four discrete SO-4 or DIP-4 packages consuming roughly twice the board area. This integration also simplifies layout routing, reduces soldering defect risk to a single component, and lowers procurement cost by handling one line item instead of four.
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About CEL
CEL is a leading electronic component manufacturer. FindMyChip sources CEL ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from CEL
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4600 | $2.46 |
| 80+ | $0.8461 | $67.69 |
| 160+ | $0.8354 | $133.67 |
| 320+ | $0.8250 | $264.00 |
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