HCPL2531TSVM Equivalent & Substitute Parts

Part Overview

The HCPL2531TSVM is a 2-channel optoisolator with transistor output manufactured by onsemi, rated for 5000Vrms isolation voltage. This component is classified as Last Time Buy, indicating discontinued production from the original manufacturer. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this optoisolator specification.

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

Substitute parts for the HCPL2531TSVM are determined by strict equivalence across the following critical parameters:

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

All identified substitute parts maintain identical electrical and mechanical specifications across these parameters, ensuring direct functional compatibility in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Channels	Isolation (Vrms)	CTR Min / Max @ 16mA	Ton / Toff (ns)	Output Type	Vout Max (V)	Iout / Ch (mA)	Vf Typ (V)	If Max (mA)	Temp Range (°C)	Package	Inventory (Pcs)
HCPL2531TSVM	onsemi	Last Time Buy	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	756
HCPL2531SM	Fairchild Semiconductor	Active	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	2120
HCPL2531SVM	Fairchild Semiconductor	Active	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	1861
HCPL2531SDM	Fairchild Semiconductor	Active	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	1501
HCPL2531TSR2VM	Fairchild Semiconductor	Active	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	1404
HCPL2531TSVM	Fairchild Semiconductor	Active	2	5000	19% / 50%	250, 260	Transistor	20	8	1.45	25	-40 ~ 100	8-SMD, Gull Wing	2878

Engineering Selection Recommendations

All substitute parts listed maintain full parametric equivalence to the HCPL2531TSVM across electrical and mechanical specifications. Selection among these alternatives should be based on the following factors:

Product Status: The original HCPL2531TSVM is Last Time Buy from onsemi. All Fairchild Semiconductor variants (HCPL2531SM, HCPL2531SVM, HCPL2531SDM, HCPL2531TSR2VM, HCPL2531TSVM) are Active products, ensuring continued availability and supply chain stability.

Compliance: All parts maintain ROHS3 compliance and carry identical electrical certifications (ECCN: EAR99, HTSUS: 8541.49.8000), supporting regulatory requirements across applications.

Inventory Availability: Fairchild Semiconductor variants demonstrate higher inventory levels, with HCPL2531TSVM (Fairchild) at 2878 Pcs and HCPL2531SM at 2120 Pcs, compared to the onsemi original at 756 Pcs.

Package Consistency: All parts use identical 8-SMD Gull Wing packaging, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can HCPL2531SM be used as a direct replacement for HCPL2531TSVM?

A: Yes. Both parts share identical electrical parameters including 5000Vrms isolation, 2-channel configuration, 19-50% current transfer ratio, 250/260ns switching times, and 8-SMD Gull Wing packaging. The parts are functionally equivalent.

Q: What is the difference between HCPL2531TSVM (onsemi) and HCPL2531TSVM (Fairchild)?

A: Both carry the same part number but are manufactured by different suppliers. Electrical and mechanical specifications are identical. The Fairchild version is Active status with higher inventory availability.

Q: Are all substitute parts suitable for high-isolation applications?

A: Yes. All listed parts maintain 5000Vrms isolation voltage, meeting the isolation requirement of the original HCPL2531TSVM across all application categories.

Q: Do package variants affect PCB compatibility?

A: No. All substitute parts use 8-SMD Gull Wing packaging, ensuring direct compatibility with existing PCB layouts designed for

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