PS8601L-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS8601L-A is a 5000Vrms optoisolator transistor with base output manufactured by CEL in 8-SMD surface mount package. This component provides galvanic isolation for single-channel DC input applications with transistor output configuration. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across isolation voltage, channel configuration, output type, and surface mount packaging specifications.

Key Parameters

Parameter	PS8601L-A Value	Criticality for Substitution
Voltage - Isolation	5000Vrms	Critical
Number of Channels	1	Critical
Output Type	Transistor with Base	Critical
Current Transfer Ratio (Min)	15% @ 16mA	Critical
Voltage - Output (Max)	35V	Critical
Current - Output / Channel	8mA	Critical
Input Type	DC	Critical
Mounting Type	Surface Mount	Critical
Package / Case	8-SMD, Gull Wing	Critical
Operating Temperature	-55°C ~ 100°C	Important
Voltage - Forward (Vf) (Typ)	1.7V	Important
Current - DC Forward (If) (Max)	25mA	Important

Substitute Part Grouping Explanation

Substitute parts for the PS8601L-A are classified into two categories based on parametric alignment:

Parametric Equivalents maintain all critical electrical specifications including 5000Vrms isolation voltage, 15% minimum current transfer ratio at 16mA, 35V maximum output voltage, and identical operating temperature range (-55°C to 100°C). These parts are direct functional replacements with no circuit redesign required.

Similar Parts share the core functionality (5000Vrms isolation, single-channel transistor output, 8-SMD package) but exhibit variations in one or more secondary parameters such as output voltage maximum, current transfer ratio range, or operating temperature limits. Selection of similar parts requires circuit-level evaluation to confirm compatibility with application requirements.

The following parameters determine substitution eligibility:

Voltage - Isolation: 5000Vrms (minimum acceptable)
Number of Channels: 1 (fixed requirement)
Output Type: Transistor with Base (fixed requirement)
Package / Case: 8-SMD, Gull Wing (fixed requirement)
Current Transfer Ratio (Min): 15% @ 16mA or higher
Voltage - Output (Max): 35V or higher
Current - Output / Channel: 8mA (fixed requirement)
Input Type: DC (fixed requirement)

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 16mA	Vout Max	Operating Temp	Product Status	Packaging
PS8601L-A	CEL	5000Vrms	15%	35V	-55°C ~ 100°C	Obsolete	Tube
PS8501L3-AX	Renesas Electronics	5000Vrms	15%	35V	-55°C ~ 100°C	Active	Tube
PS8501L2-AX	Renesas Electronics	5000Vrms	15%	35V	-55°C ~ 100°C	Active	Tube
PS8501L2-V-AX	Renesas Electronics	5000Vrms	15%	35V	-55°C ~ 100°C	Active	Tube
PS8501L3-V-AX	Renesas Electronics	5000Vrms	15%	35V	-55°C ~ 100°C	Active	Tube
6N136-X017T	Vishay Semiconductor	5300Vrms	19%	15V	-55°C ~ 100°C	Active	Tape & Reel
6N136SDVM	onsemi	5000Vrms	19%	20V	-40°C ~ 100°C	Active	Tape & Reel
HCPL-4562-520E	Broadcom Limited	5000Vrms	Not specified	20V	-40°C ~ 85°C	Active	Tape & Reel
HCPL-4562-300E	Broadcom Limited	3750Vrms	Not specified	20V	-40°C ~ 85°C	Active	Cut Tape & Digi-Reel
HCPL-4562-500E	Broadcom Limited	3750Vrms	Not specified	20V	-40°C ~ 85°C	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

PS8501L3-AX, PS8501L2-AX, PS8501L2-V-AX, and PS8501L3-V-AX manufactured by Renesas Electronics Corporation are parametric equivalents to PS8601L-A. All four parts maintain identical isolation voltage (5000Vrms), current transfer ratio minimum (15% @ 16mA), maximum output voltage (35V), and operating temperature range (-55°C to 100°C). These parts carry Active product status and ROHS3 compliance certification. Direct substitution is supported without circuit modification.

Secondary Substitutes (Similar Parts with Parameter Variations):

6N136-X017T (Vishay Semiconductor) provides higher isolation voltage (5300Vrms) and improved current transfer ratio (19% @ 16mA) but reduced maximum output voltage (15V versus 35V). This part is suitable only for applications where output voltage does not exceed 15V.

6N136SDVM (onsemi) maintains 5000Vrms isolation and 8mA output current but specifies lower maximum output voltage (20V) and narrower operating temperature range (-40°C to 100°C versus -55°C to 100°C). This part is suitable for applications operating above -40°C.

HCPL-4562-520E (Broadcom Limited) matches 5000Vrms isolation voltage but specifies 20V maximum output voltage and -40°C to 85°C operating range. Current transfer ratio is not specified in available data. This part is suitable for applications with output voltage requirements not exceeding 20V and operating temperatures above -40°C and below 85°C.

HCPL-4562-300E and HCPL-4562-500E (Broadcom Limited) specify only 3750Vrms isolation voltage, below the 5000Vrms requirement. These parts are not suitable substitutes for PS8601L-A.

Frequently Asked Questions (FAQ)

Q: Can PS8501L3-AX directly replace PS8601L-A without circuit changes?

A: Yes. PS8501L3-AX is a parametric equivalent with identical isolation voltage (5000Vrms), current transfer ratio (15% @ 16mA), maximum output voltage (35V), and operating temperature range (-55°C to 100°C). The 8-SMD Gull Wing package is mechanically and electrically compatible. No circuit redesign is required.

Q: What is the difference between PS8501L2-AX and PS8501L3-AX?

A: Both parts are parametric equivalents to PS8601L-A with identical electrical specifications. The difference lies in the suffix designation (L2 versus L3), which reflects internal design or manufacturing revision. Both are Active status products suitable for new designs and ongoing production.

Q: Why does 6N136-X017T have higher isolation voltage but lower output voltage?

A: 6N136-X017T is designed with different internal architecture optimized for higher isolation performance (5300Vrms) but with reduced output voltage capability (15V maximum). This represents a different design trade-off. Selection depends on whether the application requires the higher isolation voltage or the higher output voltage of PS8601L-A.

Q: Can HCPL-4562-520E replace PS8601L-A in all applications?

A: HCPL-4562-520E matches the 5000Vrms isolation voltage and 8-SMD package but specifies lower maximum output voltage (20V versus 35V) and narrower operating temperature range (-40°C to 85°C versus -55°C to 100°C). Substitution is valid only for applications where output voltage does not exceed 20V and operating temperature remains within -40°C to 85°C.

Q: Are HCPL-4562-300E and HCPL-4562-500E suitable substitutes?

A: No. Both parts specify 3750Vrms isolation voltage, which is below the 5000Vrms requirement of PS8601L-A. These parts do not meet the minimum isolation voltage specification and are not suitable substitutes.

Q: What packaging options are available for substitutes?

A: Renesas Electronics PS8501 series parts are supplied in Tube packaging. Vishay 6N136-X017T and onsemi 6N136SDVM are supplied in Tape & Reel. Broadcom HCPL-4562 series parts are supplied in Tape & Reel or Cut Tape & Digi-Reel. All maintain 8-SMD Gull Wing surface mount package compatibility. Packaging format selection depends on procurement and assembly requirements.

Q: Which substitute has the best current transfer ratio performance?

A: 6N136-X017T and 6N136SDVM both specify 19% minimum current transfer ratio at 16mA, compared to 15% for PS8601L-A and Renesas equivalents. Higher current transfer ratio provides improved signal transmission efficiency. However, this advantage must be weighed against the reduced output voltage capability of 6N136-X017T (15V maximum).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. PS8601L-A is classified as REACH Affected; Renesas PS8501 series parts are REACH Affected or REACH Unaffected depending on specific variant; Vishay, onsemi, and Broadcom parts are REACH Unaffected.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message