HCPL-253L-520E Equivalent & Substitute Parts

Part Overview

The HCPL-253L-520E is a 2-channel optoisolator with transistor output manufactured by Broadcom Limited. This component provides 5000Vrms isolation voltage and is designed for applications requiring high-voltage signal isolation in industrial and power management circuits. The part is currently in active production status with 686 units in stock.

Substitute parts are necessary when the HCPL-253L-520E becomes unavailable, when alternative isolation voltage ratings are acceptable for specific applications, or when different current transfer ratio specifications better match circuit requirements.

Substiute Parts

HCPL-253L-520E

Broadcom LimitedIn Stock: 719HCPL-253L-520E Datasheet

Current PartRFQ

HCPL2530S

onsemiIn Stock: 2023HCPL2530S Datasheet

MFR RecommendedRFQ

HCPL2530SD

Fairchild SemiconductorIn Stock: 50781HCPL2530SD Datasheet

MFR RecommendedRFQ

HCPL2531SDV

Fairchild SemiconductorIn Stock: 99912HCPL2531SDV Datasheet

MFR RecommendedRFQ

SFH6325-X017T

Vishay Semiconductor Opto DivisionIn Stock: 12555SFH6325-X017T Datasheet

MFR RecommendedRFQ

SFH6326-X009

Vishay Semiconductor Opto DivisionIn Stock: 1786SFH6326-X009 Datasheet

MFR RecommendedRFQ

SFH6326-X017T

Vishay Semiconductor Opto DivisionIn Stock: 1858SFH6326-X017T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-253L-520E is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of Channels: Must be 2
• Output Type: Must be Transistor
• Current - Output / Channel: Must be 8mA
• Operating Temperature Range: Must support -55°C ~ 100°C
• Package / Case: Must be 8-SMD, Gull Wing
• Input Type: Must be DC

Secondary Substitution Criteria (Application-Dependent):

• Voltage - Isolation: Minimum 5000Vrms (higher values acceptable)
• Current Transfer Ratio (Min): Minimum 19% @ 16mA (higher values acceptable)
• Voltage - Output (Max): Minimum 7V (higher values acceptable)

Substitute parts meeting all primary criteria and maintaining or exceeding secondary criteria specifications are electrically compatible with the HCPL-253L-520E in equivalent circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred):

SFH6326-X017T and SFH6326-X009 from Vishay Semiconductor Opto Division are the closest functional equivalents. Both maintain the 5300Vrms isolation voltage specification, which exceeds the HCPL-253L-520E requirement. Both parts are ROHS3 compliant, active in production, and feature identical 2-channel transistor output configuration with 8-SMD Gull Wing packaging. The SFH6326-X017T is supplied in Tape & Reel packaging, while SFH6326-X009 is supplied in Tube packaging.

Reduced Isolation Voltage Alternatives:

HCPL2530S, HCPL2530SD, and HCPL2531SDV provide 2500Vrms isolation voltage, which is 50% lower than the HCPL-253L-520E. These parts are suitable only for applications where the lower isolation voltage meets circuit requirements. HCPL2530SD and HCPL2531SDV are currently in active production status. HCPL2530S is marked as obsolete and should be avoided for new designs.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The Vishay SFH6326 series and Fairchild HCPL2531SDV are confirmed active products with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can HCPL2530S, HCPL2530SD, or HCPL2531SDV be used as direct replacements for HCPL-253L-520E?

A: These parts share the same 2-channel transistor output configuration, 8-SMD Gull Wing package, and operating temperature range. However, they provide 2500Vrms isolation voltage compared to the HCPL-253L-520E's 5000Vrms specification. Substitution is only valid if circuit design requirements permit the lower isolation voltage rating.

Q: What is the primary difference between SFH6326-X017T and SFH6326-X009?

A: Both parts are electrically identical with 5300Vrms isolation voltage and 19% minimum current transfer ratio. The difference is packaging: SFH6326-X017T is supplied in Tape & Reel format, while SFH6326-X009 is supplied in Tube format. Selection depends on assembly process requirements.

Q: Why is HCPL2530S listed as obsolete?

A: HCPL2530S is marked as obsolete by onsemi. While 1960 units remain in stock, new designs should not incorporate this part. HCPL2530SD from Fairchild Semiconductor is the active equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: SFH6326-X017T, SFH6326-X009, and HCPL-253L-520E are confirmed ROHS3 compliant. HCPL2530SD and HCPL2531SDV do not specify RoHS status in available documentation. Verify compliance requirements with your procurement department before selection.

Q: What is the impact of different current transfer ratios on circuit performance?

A: Current transfer ratio determines the output current relative to input current. HCPL2530S and HCPL2530SD specify 7% minimum CTR, while HCPL-253L-520E, HCPL2531SDV, SFH6326-X009, and SFH6326-X017T specify 19% minimum CTR. Higher CTR values provide greater output current for equivalent input drive, improving circuit margin and noise immunity.

Q: Can turn-on and turn-off time differences affect circuit operation?

A: Yes. HCPL-253L-520E specifies 200ns turn-on and 600ns turn-off time. HCPL2530 series parts specify 450ns turn-on and 500ns turn-off time. SFH6326 series parts specify 200ns turn-on and 500ns turn-off time. These timing differences affect signal propagation delay and switching frequency capability. Verify timing requirements against circuit specifications before substitution.

Q: What is the significance of maximum output voltage ratings?

A: HCPL-253L-520E specifies 7V maximum output voltage, while all substitute parts specify 20V or 25V maximum output voltage. Higher output voltage ratings provide greater design margin and allow operation with higher supply voltages. This is not a limiting factor for substitution.