HCPL2503WV Equivalent & Substitute Parts

Part Overview

The HCPL2503WV is an optoisolator transistor with base output manufactured by onsemi, rated for 2500Vrms isolation voltage in a through-hole 8-DIP package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The HCPL2503WV provides DC input with transistor output including base connection, suitable for applications requiring galvanic isolation with direct transistor control capability.

Key Parameters

Parameter	HCPL2503WV
Manufacturer	onsemi
Product Status	Obsolete
Voltage - Isolation	2500Vrms
Number of Channels	1
Input Type	DC
Output Type	Transistor with Base
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Current Transfer Ratio (Min)	12% @ 16mA
Voltage - Forward (Vf) (Typ)	1.45V
Current - DC Forward (If) (Max)	25mA
Turn On / Turn Off Time (Typ)	450ns, 300ns
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.400", 10.16mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the HCPL2503WV is determined by the following critical parameters:

Isolation Voltage: The HCPL2503WV operates at 2500Vrms. Substitute parts must meet or exceed this isolation rating.
Output Configuration: Transistor with base output is required for direct compatibility.
Number of Channels: Single-channel operation must be maintained.
Input Type: DC input requirement must be preserved.
Output Voltage and Current: Maximum output voltage of 20V and output current of 8mA per channel define the load-driving capability.
Mounting and Package: Through-hole 8-DIP package format ensures mechanical and electrical compatibility with existing PCB layouts.

The HCPL-4562 series from Broadcom Limited provides functionally equivalent alternatives with enhanced isolation voltage ratings (3750Vrms to 5000Vrms), maintaining all critical output characteristics while offering active product status and improved compliance certifications.

Parameter Comparison

Parameter	HCPL2503WV	HCPL-4562	HCPL-4562-000E	HCPL-4562-020E	HCPL-4562-060E
Manufacturer	onsemi	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Isolation	2500Vrms	3750Vrms	3750Vrms	5000Vrms	3750Vrms
Number of Channels	1	1	1	1	1
Input Type	DC	DC	DC	DC	DC
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	20V	20V	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.45V	1.3V	1.3V	1.3V	1.3V
Current - DC Forward (If) (Max)	25mA	12mA	12mA	12mA	12mA
Operating Temperature	-55°C ~ 100°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP (0.400", 10.16mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All HCPL-4562 variants are active products with ROHS3 compliance, providing superior regulatory status compared to the obsolete HCPL2503WV. The HCPL-4562 series maintains electrical compatibility across all critical output parameters while offering enhanced isolation voltage ratings.

HCPL-4562-020E provides the highest isolation voltage at 5000Vrms, suitable for applications requiring maximum isolation margin. HCPL-4562-000E and HCPL-4562-060E both operate at 3750Vrms, exceeding the original 2500Vrms specification. The standard HCPL-4562 variant offers the same 3750Vrms isolation in an active product status.

Physical package dimensions differ between the original part (0.400" pitch) and substitutes (0.300" pitch). PCB layout modifications are required for mechanical accommodation. All substitute parts maintain identical electrical interface characteristics and output drive capability.

Frequently Asked Questions (FAQ)

Q: Can HCPL-4562 variants directly replace HCPL2503WV without circuit modification?

A: Electrical substitution is valid. All variants maintain 20V maximum output voltage, 8mA output current per channel, and transistor with base output configuration. Physical package pitch differs (0.400" vs 0.300"), requiring PCB layout adjustment.

Q: What is the difference between HCPL-4562, HCPL-4562-000E, HCPL-4562-020E, and HCPL-4562-060E?

A: HCPL-4562-020E provides 5000Vrms isolation. HCPL-4562-000E and HCPL-4562-060E both provide 3750Vrms isolation. The standard HCPL-4562 also provides 3750Vrms. Packaging differs: HCPL-4562-000E and HCPL-4562-060E are supplied in tubes, while HCPL-4562 packaging is unspecified. All maintain identical electrical output characteristics.

Q: Are there temperature range considerations when substituting?

A: The HCPL2503WV operates from -55°C to 100°C. HCPL-4562 variants operate from -40°C to 85°C. Applications requiring operation below -40°C or above 85°C require design review.

Q: What compliance advantages do the substitute parts offer?

A: HCPL-4562 variants are ROHS3 compliant and active products. The HCPL2503WV is obsolete with unspecified RoHS status. All parts maintain REACH Unaffected status.

Q: Is the reduced forward current specification (12mA vs 25mA) a concern?

A: The forward current specification applies to the LED input stage. Output stage current remains 8mA per channel for all parts. Input circuit design must accommodate the 12mA maximum forward current of substitute parts.

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