PS2533-1 Optoisolator 5KV Darlington Output

Part Overview

The PS2533-1 is a single-channel optoisolator with Darlington output providing 5000Vrms isolation in a 4-DIP package. The main part (CEL manufacturer) is obsolete. Alternative sourcing is necessary due to product discontinuation while maintaining electrical and mechanical compatibility through available substitutes from active manufacturers.

Substiute Parts

PS2533-1

CELIn Stock: 30111PS2533-1 Datasheet

Current PartRFQ

PS2533-1-A

Renesas Electronics CorporationIn Stock: 10752PS2533-1-A Datasheet

DirectRFQ

LTV-852

LITEONIn Stock: 98992LTV-852 Datasheet

SimilarRFQ

PS2533-1-V-A

Renesas Electronics CorporationIn Stock: 9587PS2533-1-V-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS2533-1 is determined by the following critical parameters:

Essential Parameters for Substitution:

• Voltage - Isolation: 5000Vrms (required match)
• Number of Channels: 1 (required match)
• Output Type: Darlington (required match)
• Package / Case: 4-DIP (0.300", 7.62mm) (required match)
• Mounting Type: Through Hole (required match)
• Current - Output / Channel: 150mA (required match)

Acceptable Parameter Variations:

• Current Transfer Ratio: Minimum 1000% @ 1mA; Maximum up to 15000% @ 1mA
• Voltage - Output (Max): 300V to 350V
• Operating Temperature (Min): -30°C to -55°C acceptable
• Vce Saturation (Max): 1V to 1.2V acceptable
• Voltage - Forward (Vf) (Typ): 1.15V to 1.2V acceptable
• Current - DC Forward (If) (Max): 50mA to 80mA acceptable
• Rise / Fall Time: 100µs rise time required; fall time 20µs to 100µs acceptable

Parameter Comparison

Engineering Selection Recommendations

PS2533-1-A (Renesas Electronics): Direct equivalent with identical electrical characteristics and active product status. RoHS3 compliant. Recommended as primary substitute for obsolete PS2533-1 (CEL).

PS2533-1-V-A (Renesas Electronics): Parametric equivalent with identical electrical characteristics to PS2533-1-A. Active product status, RoHS3 compliant. Functionally interchangeable.

LTV-852 (LITEON): Similar substitute with acceptable parameter variations. Current Transfer Ratio maximum extends to 15000% (versus 6500%), providing broader performance margin. Maximum output voltage reduces to 300V (versus 350V). Fall time improves to 20µs (versus 100µs). Operating temperature minimum is -30°C (versus -55°C). RoHS3 compliant and actively manufactured. Selection requires confirmation that reduced maximum output voltage and narrower low-temperature range are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can I replace PS2533-1 with PS2533-1-A or PS2533-1-V-A?

A: Yes. Both Renesas parts are direct electrical and mechanical equivalents with identical key parameters including isolation voltage, output current, and operating temperature range. Both are active products with RoHS3 compliance.

Q: What are the differences between PS2533-1-A and PS2533-1-V-A?

A: Both parts are parametrically identical. Selection between them may be driven by packaging availability (Tube) and specific application requirements.

Q: Can I use LTV-852 as a substitute?

A: LTV-852 is compatible when the following conditions are met: application does not require maximum output voltage exceeding 300V, operating temperature minimum of -30°C is acceptable, and maximum current transfer ratio up to 15000% does not cause stability issues. LTV-852 features faster fall time (20µs versus 100µs).

Q: Are all substitutes in the same package?

A: Yes. All listed substitutes use 4-DIP (0.300", 7.62mm) through-hole package with identical pinout and mounting characteristics.

Q: Which substitutes are RoHS compliant?

A: PS2533-1-A, PS2533-1-V-A, and LTV-852 are all ROHS3 compliant. The original PS2533-1 (CEL) is RoHS non-compliant.

Q: Does operating temperature range affect substitution?

A: PS2533-1, PS2533-1-A, and PS2533-1-V-A operate from -55°C to 100°C. LTV-852 operates from -30°C to 100°C. Substitution with LTV-852 requires confirmation that -30°C minimum temperature is acceptable for the intended application.