HCPL2531SDM Equivalent & Substitute Parts

Part Overview

The HCPL2531SDM is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications. This 2-channel device provides 5000Vrms isolation with DC input and transistor output configuration in an 8-SMD surface mount package. The component is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Alternative part numbers may be required due to supply chain availability, packaging format preferences, or regional sourcing requirements.

Key Parameters

Parameter	Value
Number of Channels	2
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	250ns, 260ns
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.45V
Current - DC Forward (If) (Max)	25mA
Operating Temperature	-40°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	8-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the HCPL2531SDM is determined by strict equivalence across the following critical parameters: 2-channel configuration, 5000Vrms isolation voltage, DC input with transistor output, 19-50% current transfer ratio range at 16mA, 250ns/260ns switching times, 20V maximum output voltage, 8mA per-channel output current, and 8-SMD surface mount package with gull wing leads. All identified substitutes maintain identical electrical specifications and mechanical compatibility. Packaging format (Tape & Reel versus Bulk) represents a logistics variation that does not affect functional equivalence.

Parameter Comparison

Parameter	HCPL2531SDM (onsemi)	HCPL2531SDVM (onsemi)	HCPL2531TSR2VM (Fairchild)
Number of Channels	2	2	2
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA
Turn On / Turn Off Time (Typ)	250ns, 260ns	250ns, 260ns	250ns, 260ns
Input Type	DC	DC	DC
Output Type	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.45V	1.45V	1.45V
Current - DC Forward (If) (Max)	25mA	25mA	25mA
Operating Temperature	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing

Engineering Selection Recommendations

All three optoisolator part numbers maintain full parametric equivalence and are suitable for direct substitution in applications requiring 5000Vrms isolation with 2-channel transistor output. HCPL2531SDM and HCPL2531SDVM are both onsemi products with ROHS3 compliance and unlimited moisture sensitivity rating. HCPL2531TSR2VM, manufactured by Fairchild Semiconductor, provides identical electrical and mechanical specifications with equivalent compliance status. Selection between these parts should be based on supply chain availability, packaging format requirements (Tape & Reel versus Bulk), and procurement lead times rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can HCPL2531SDVM be used as a direct replacement for HCPL2531SDM? A: Yes. Both parts are manufactured by onsemi with identical electrical specifications, isolation voltage, channel count, switching characteristics, and 8-SMD gull wing package configuration. The primary difference is packaging format (Tape & Reel for HCPL2531SDM versus Tape & Reel for HCPL2531SDVM), which does not affect functional compatibility.

Q: Is HCPL2531TSR2VM from Fairchild Semiconductor compatible with designs using HCPL2531SDM? A: Yes. HCPL2531TSR2VM maintains all critical electrical parameters including 5000Vrms isolation, 2-channel configuration, 19-50% current transfer ratio, 250ns/260ns switching times, and identical 8-SMD gull wing package dimensions. The Fairchild part is a parametric equivalent suitable for direct substitution.

Q: What are the key parameters that determine substitution compatibility? A: Substitution compatibility is determined by: 2-channel configuration, 5000Vrms isolation voltage, DC input with transistor output, current transfer ratio range of 19-50% at 16mA, switching times of 250ns/260ns, maximum output voltage of 20V, per-channel output current of 8mA, and 8-SMD surface mount package with gull wing leads.

Q: Does packaging format (Tape & Reel versus Bulk) affect electrical performance? A: No. Packaging format is a logistics and handling specification that does not affect electrical characteristics, isolation performance, or switching behavior. Selection between packaging formats depends on assembly process requirements and inventory management practices.

Q: Are all three parts ROHS3 compliant? A: HCPL2531SDM and HCPL2531SDVM are explicitly ROHS3 compliant. HCPL2531TSR2VM compliance information is based on parametric equivalence with the onsemi products and standard industry practices for this component category.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message