HCPL2601S Equivalent & Substitute Parts

Part Overview

The HCPL2601S is a logic output optoisolator manufactured by onsemi, featuring 2500Vrms isolation voltage, open collector output, and 10Mbps data rate in an 8-SMD package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The HCPL2601S serves applications requiring galvanic isolation in digital signal transmission with moderate isolation voltage requirements and standard switching speeds. Substitute parts must maintain compatibility with the 8-SMD form factor and preserve critical electrical characteristics including isolation voltage, output type, and data rate specifications.

Key Parameters

Parameter	HCPL2601S Value
Manufacturer	onsemi
Product Status	Obsolete
Number of Channels	1
Voltage - Isolation	2500Vrms
Common Mode Transient Immunity (Min)	5kV/µs
Input Type	DC
Output Type	Open Collector
Current - Output / Channel	50 mA
Data Rate	10Mbps
Propagation Delay tpLH / tpHL (Max)	75ns, 75ns
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°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 HCPL2601S is determined by the following critical parameters:

Primary Compatibility Criteria:

Single channel configuration (1 channel)
Open collector output type
DC input type
50 mA output current capability
10Mbps or higher data rate
8-SMD, Gull Wing package form factor
Surface mount mounting type
ROHS3 compliance and MSL 1 rating

Isolation Voltage Consideration: The HCPL2601S specifies 2500Vrms isolation. Substitute parts with equal or higher isolation voltage (2500Vrms, 3750Vrms, or 5000Vrms) are electrically compatible, as higher isolation ratings provide equivalent or superior performance in applications designed for 2500Vrms isolation.

Secondary Compatibility Factors:

Propagation delay specifications (75ns maximum acceptable)
Supply voltage range compatibility (4.5V ~ 5.5V primary; 2.7V ~ 3.6V acceptable with design consideration)
Operating temperature range (-40°C ~ 85°C minimum)
CMTI rating (5kV/µs or higher)

Substitute parts are grouped into two categories based on output architecture: standard open collector devices and Schottky-clamped open collector devices. Both categories maintain functional equivalence for the HCPL2601S application.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	Output Type	Data Rate	CMTI (Min)	Propagation Delay (Max)	Supply Voltage	Package	Product Status
HCPL2601S	onsemi	2500Vrms	Open Collector	10Mbps	5kV/µs	75ns, 75ns	4.5V ~ 5.5V	8-SMD, Gull Wing	Obsolete
6N137SMT&R	Isocom Components 2004 LTD	5000Vrms	Open Collector	10Mbps	5kV/µs	75ns, 75ns	7V	8-SMD, Gull Wing	Active
HCPL-260L-300E	Broadcom Limited	3750Vrms	Open Collector, Schottky Clamped	15MBd	10kV/µs	75ns, 75ns	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-SMD, Gull Wing	Active
HCPL-260L-320E	Broadcom Limited	5000Vrms	Open Collector, Schottky Clamped	15MBd	10kV/µs	75ns, 75ns	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-SMD, Gull Wing	Active
HCPL-260L-500E	Broadcom Limited	3750Vrms	Open Collector, Schottky Clamped	15MBd	10kV/µs	75ns, 75ns	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-SMD, Gull Wing	Active
HCPL-260L-520E	Broadcom Limited	5000Vrms	Open Collector, Schottky Clamped	15MBd	10kV/µs	75ns, 75ns	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-SMD, Gull Wing	Active
HCPL-260L-560E	Broadcom Limited	3750Vrms	Open Collector, Schottky Clamped	15MBd	10kV/µs	75ns, 75ns	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-SMD, Gull Wing	Active

Engineering Selection Recommendations

Primary Substitute - Direct Replacement: The 6N137SMT&R from Isocom Components 2004 LTD is the most direct substitute for the HCPL2601S. It maintains identical output type (open collector), data rate (10Mbps), propagation delay (75ns), CMTI (5kV/µs), and package form factor (8-SMD, Gull Wing). The 6N137SMT&R provides higher isolation voltage (5000Vrms versus 2500Vrms), ensuring superior performance in isolation-critical applications. Product status is active with established supply availability.

Secondary Substitutes - Enhanced Performance: The HCPL-260L series from Broadcom Limited (HCPL-260L-300E, HCPL-260L-320E, HCPL-260L-500E, HCPL-260L-520E, HCPL-260L-560E) offers enhanced specifications including Schottky-clamped output architecture, higher data rate (15MBd versus 10Mbps), and superior CMTI (10kV/µs versus 5kV/µs). These parts maintain the 8-SMD, Gull Wing package and 75ns propagation delay. All HCPL-260L variants are active products with ROHS3 compliance and MSL 1 rating.

Selection between 3750Vrms and 5000Vrms isolation variants depends on application isolation requirements. Selection between packaging options (Tube, Cut Tape, or Tape & Reel) depends on procurement and assembly workflow requirements.

All recommended substitutes maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and REACH unaffected status, matching the regulatory profile of the HCPL2601S.

Frequently Asked Questions (FAQ)

Q: Can the 6N137SMT&R directly replace the HCPL2601S without circuit modification?

A: The 6N137SMT&R is functionally compatible with the HCPL2601S for applications designed around the 4.5V ~ 5.5V supply range. The 6N137SMT&R operates at 7V supply voltage. Circuit design must accommodate this supply voltage difference. Pin configuration and package footprint are identical (8-SMD, Gull Wing).

Q: What is the difference between standard open collector and Schottky-clamped open collector output?

A: Schottky-clamped output includes an integrated Schottky diode clamp to ground, reducing output voltage swing and improving switching speed. For the HCPL-260L series, this results in faster rise and fall times (24ns, 10ns versus 50ns, 12ns for HCPL2601S). Applications requiring standard open collector behavior can use either architecture; Schottky-clamped variants provide performance enhancement.

Q: Are the HCPL-260L variants suitable for 10Mbps applications?

A: Yes. The HCPL-260L series specifies 15MBd data rate, which exceeds the 10Mbps requirement of the HCPL2601S. Higher data rate capability ensures compatibility with existing 10Mbps system designs.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tube, Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR) packaging. Selection depends on assembly process requirements and procurement volume. All packaging options contain identical die and electrical specifications.

Q: Do all substitute parts meet the same regulatory compliance as the HCPL2601S?

A: Yes. All recommended substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and REACH unaffected status. The 6N137SMT&R and HCPL-260L series are certified to the same regulatory standards as the HCPL2601S.

Q: Can HCPL-260L parts operate at 2.7V ~ 3.6V supply voltage?

A: The HCPL-260L series supports dual supply voltage ranges: 2.7V ~ 3.6V and 4.5V ~ 5.5V. Applications designed for 4.5V ~ 5.5V operation (matching HCPL2601S) use the upper voltage range. The lower voltage range is available for low-power applications but requires circuit design verification.

Q: What is the isolation voltage requirement for my application?

A: The HCPL2601S specifies 2500Vrms isolation. Substitute parts with 2500Vrms, 3750Vrms, or 5000Vrms isolation are electrically compatible. Select the isolation voltage matching your application requirement. Higher isolation ratings provide design margin but do not affect compatibility with 2500Vrms-rated applications.

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