PS2501L-1-A CEL Diode (Small Outline Packages) In Stock

Name: PS2501L-1-A
Brand: CEL
SKU: PS2501L-1-A
Availability: InStock

PS2501L-1-A is a single-channel surface-mount photocoupler from CEL with 5000 V isolation voltage and 300% current transfer ratio. Supports up to 80 V collector-emitter breakdown voltage with 80 mA forward current. Available in compact SOP-4 package with UL recognition.

OBSOLETEDiodeVerified Jun 2026

Package / Visual Reference

PS2501L-1-ASmall Outline Packages

Quick Facts

Manufacturer: CEL
Package: Small Outline Packages
Pin Count: 4
Lifecycle: OBSOLETE
Datasheet: PS2501L-1-A Datasheet PDF
Category: Diode
Price: From $0.2515(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 PS2501L-1-A?

5000 V isolation voltage for high-voltage safety compliance in industrial applications
300% current transfer ratio (CTR) enabling efficient signal transmission with low drive current
Compact SOP-4 surface-mount package reducing PCB footprint versus DIP alternatives
UL recognized with lead-free construction meeting RoHS environmental requirements

What is PS2501L-1-A used for?

PS2501L-1-A is widely used in industrial control systems and power supply designs where galvanic isolation between low-voltage logic circuits and high-voltage power stages is required. The device suits AC/DC converters, motor drive feedback paths, and programmable logic controller (PLC) I/O interfaces. Its high isolation voltage of 5000 V and compact SMD form factor also make it a reliable choice for medical equipment and telecommunications line-card designs.

What are the specifications of PS2501L-1-A?

YTEOL	0
Additional Feature	UL RECOGNIZED
Coll-Emtr Bkdn Voltage-Min	80V
Configuration	SINGLE
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	1
Optoelectronic Device Type	TRANSISTOR OUTPUT OPTOCOUPLER
Terminal Finish	Tin/Bismuth (Sn/Bi)
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
HTS Code	8541.40.80.00

Where can I find the PS2501L-1-A datasheet?

PS2501L-1-A Datasheet Download

Official datasheet from CEL

What are equivalent replacements for PS2501L-1-A?

Compatible alternatives and drop-in replacements for PS2501L-1-A:

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Compare all alternatives & request quotes →

Frequently Asked Questions

What isolation voltage does the PS2501L-1-A provide, and why does it matter for industrial designs?

The PS2501L-1-A provides 5000 V isolation voltage between input and output, making it suitable for industrial motor drives, SMPS feedback loops, and safety-critical circuits where high-voltage transient protection is required. This rating exceeds the 2500 V found in standard optocouplers, giving designers additional margin for IEC 60950 compliance.

How does the 300% current transfer ratio of PS2501L-1-A affect drive circuit design?

A 300% CTR means the PS2501L-1-A can deliver up to 3 times the output collector current relative to the 80 mA maximum input forward current, allowing designers to use smaller base resistors and reduce power dissipation in the drive stage. This high CTR is advantageous in logic-level interfaces operating at 3.3 V or 5 V where drive current budget is limited.

Which alternative CEL or competing optocoupler can replace PS2501L-1-A in a 4-channel configuration?

For 4-channel isolation in the same SOP package family, the PS2501L-4 provides four optocoupler channels on a single IC while maintaining the 5000 V isolation rating and compatible CTR of 300%. Competing alternatives include the Vishay SFH6156 and the ON Semiconductor HCPL-314J, both offering similar breakdown voltages of 80 V and SMD packaging options.

What is the maximum collector-emitter breakdown voltage of PS2501L-1-A and how does it constrain output circuit design?

The PS2501L-1-A has a maximum collector-emitter breakdown voltage (BVCEO) of 80 V, which sets the upper rail limit for the output-side circuit. Designers must ensure that the supply voltage on the collector side does not exceed 80 V under any transient condition, and should include voltage clamping if the application involves inductive loads or flyback spikes above 60 V.

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AvailabilityIn Stock

Reference Price (USD)

From $0.2515

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.7500	$0.75
25+	$0.3000	$7.50
400+	$0.2716	$108.64
800+	$0.2702	$216.16
1600+	$0.2515	$402.43

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Unit price: $0.7500 · Total: $0.75

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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PS2501L-1-A CEL Diode (Small Outline Packages) In Stock

What are the key features of PS2501L-1-A?

What is PS2501L-1-A used for?

What are the specifications of PS2501L-1-A?

Compliance & Regulatory

Where can I find the PS2501L-1-A datasheet?

What are equivalent replacements for PS2501L-1-A?

Frequently Asked Questions

What isolation voltage does the PS2501L-1-A provide, and why does it matter for industrial designs?

How does the 300% current transfer ratio of PS2501L-1-A affect drive circuit design?

Which alternative CEL or competing optocoupler can replace PS2501L-1-A in a 4-channel configuration?

What is the maximum collector-emitter breakdown voltage of PS2501L-1-A and how does it constrain output circuit design?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About CEL

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