PS2532-1 Optoisolator Equivalent & Substitute Parts

Part Overview

The PS2532-1 is a 5000Vrms isolation optoisolator with Darlington output configuration, manufactured by CEL in a 4-DIP through-hole package. This component provides galvanic isolation for DC input signals with a single output channel rated for 150mA maximum output current.

The PS2532-1 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

PS2532-1

CELIn Stock: 1450PS2532-1 Datasheet

Current PartRFQ

LTV-852

LITEONIn Stock: 98992LTV-852 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS2532-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Isolation voltage: 5000Vrms
• Output configuration: Darlington
• Number of channels: 1
• Package type: 4-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Maximum output voltage: 300V
• Maximum output current: 150mA

Allowable Parameter Variations: Substitute parts may differ in current transfer ratio range, rise/fall time characteristics, forward voltage specifications, and operating temperature range, provided the substitute meets or exceeds the minimum isolation voltage and output current requirements.

The LTV-852 manufactured by LITEON qualifies as a direct substitute based on matching isolation voltage, Darlington output type, single-channel configuration, identical package specification, and equivalent output ratings.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PS2532-1 is obsolete with limited inventory (1352 pcs). The LTV-852 is active with significantly higher inventory availability (98977 pcs), making it the preferred choice for new designs and ongoing production support.

Compliance Status: The PS2532-1 is RoHS non-compliant and REACH-affected. The LTV-852 is ROHS3 compliant, meeting current regulatory requirements for new applications and markets with mandatory RoHS compliance.

Functional Compatibility: Both components share identical isolation voltage, output type, channel count, and package specifications. The LTV-852 demonstrates superior current transfer ratio performance and faster fall time characteristics, which provide operational advantages in switching applications.

Temperature Range Consideration: The PS2532-1 operates from -55°C to 100°C, while the LTV-852 operates from -30°C to 100°C. Applications requiring operation below -30°C must retain the PS2532-1 or identify alternative solutions.

Selection Criteria: For applications without extreme low-temperature requirements and where regulatory compliance is necessary, the LTV-852 is the recommended substitute. For legacy systems requiring the full -55°C to 100°C operating range, alternative parts must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the LTV-852 directly replace the PS2532-1 in existing PCB designs?

A: Yes, for applications operating above -30°C. Both components use identical 4-DIP (0.300", 7.62mm) through-hole packaging with the same pin configuration. No PCB modifications are required. Applications requiring operation below -30°C must retain the PS2532-1.

Q: What are the key differences between these two optoisolators?

A: The primary differences are: (1) Current transfer ratio range—LTV-852 has a lower minimum (1000% vs 1500%) but higher maximum (15000% vs 6500%); (2) Fall time—LTV-852 is faster (20µs vs 100µs); (3) Operating temperature—PS2532-1 extends to -55°C while LTV-852 minimum is -30°C; (4) Regulatory compliance—LTV-852 is ROHS3 compliant while PS2532-1 is not.

Q: Are there any electrical parameter concerns when substituting the LTV-852 for the PS2532-1?

A: The LTV-852 has slightly higher forward voltage (1.2V vs 1.15V) and Vce saturation (1.2V vs 1.0V). These differences are minor and typically do not affect circuit operation. Both components maintain identical 5000Vrms isolation voltage, 300V maximum output voltage, and 150mA maximum output current ratings.

Q: Why is the LTV-852 preferred despite the PS2532-1 having a lower minimum current transfer ratio?

A: The LTV-852 is preferred due to active product status, higher inventory availability, ROHS3 compliance, and superior switching performance (faster fall time). The lower minimum current transfer ratio (1000% vs 1500%) is offset by the higher maximum ratio (15000% vs 6500%), providing greater operational flexibility. For applications requiring the specific minimum CTR of 1500%, the PS2532-1 must be retained.

Q: What is the impact of the narrower operating temperature range of the LTV-852?

A: The LTV-852 operates from -30°C to 100°C, compared to the PS2532-1 range of -55°C to 100°C. Applications requiring operation below -30°C cannot use the LTV-852 and must source the PS2532-1 or identify alternative optoisolators with extended low-temperature ratings.

Q: Is the LTV-852 suitable for new product designs?

A: Yes. The LTV-852 is an active product with ROHS3 compliance, making it suitable for new designs. It provides superior performance characteristics and regulatory compliance compared to the obsolete PS2532-1. Verify that the operating temperature range (-30°C to 100°C) meets application requirements.