PS8602-A Optoisolator 5KV Transistor Output

Part Overview

The PS8602-A is a 5000Vrms optoisolator with transistor output, manufactured by CEL in an 8-DIP package configuration. This single-channel component is classified as obsolete, making it necessary to identify equivalent and substitute parts for new designs and ongoing production support. The PS8602-A operates across an industrial temperature range of -55°C to 100°C and delivers 8mA output current with a 15% minimum current transfer ratio.

Key Parameters

Parameter	Value
Manufacturer	CEL
Part Number	PS8602-A
Category	Optoisolators
Package / Case	8-DIP (0.300", 7.62mm)
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	15% @ 16mA
Output Type	Transistor
Voltage - Output (Max)	35V
Current - Output / Channel	8mA
Operating Temperature Range	-55°C ~ 100°C
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the PS8602-A are identified based on strict electrical and mechanical compatibility across the following critical parameters:

Mandatory Matching Parameters:

Voltage - Isolation: 5000Vrms
Number of Channels: 1
Output Type: Transistor
Package / Case: 8-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Current - Output / Channel: 8mA
Operating Temperature Range: -55°C ~ 100°C

The substitutes are grouped into two categories:

Direct Series Equivalent (PS8502-AX): Maintains identical electrical characteristics from the same NEPOC series, including 15% minimum current transfer ratio and 35V maximum output voltage.

Parametric Equivalents (HCPL-4504#020, HCPL-4504-020E): Meet all mandatory isolation, package, and output specifications while offering enhanced performance through higher current transfer ratio (25-60% @ 16mA) and faster switching times. These parts differ in maximum output voltage (20V vs. 35V) and are suitable for applications not requiring the full 35V output rating.

Parameter Comparison

Parameter	PS8602-A (Main)	PS8502-AX	HCPL-4504#020	HCPL-4504-020E
Manufacturer	CEL	Renesas Electronics Corporation	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1	1
Current Transfer Ratio (Min)	15% @ 16mA	15% @ 16mA	25% @ 16mA	25% @ 16mA
Current Transfer Ratio (Max)	-	-	60% @ 16mA	60% @ 16mA
Turn On / Turn Off Time (Typ)	500ns, 300ns	220ns, 350ns	200ns, 300ns	200ns, 300ns
Voltage - Output (Max)	35V	35V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.7V	1.7V	1.5V	1.5V
Current - DC Forward (If) (Max)	25 mA	25 mA	25 mA	25 mA
Operating Temperature Range	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected
RoHS Status	Not specified	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

PS8502-AX (Primary Replacement for PS8602-A): The PS8502-AX is the recommended substitute for direct replacement. It maintains electrical parity with the PS8602-A, including identical current transfer ratio (15% minimum) and maximum output voltage (35V), while providing active product status. Both components share the NEPOC series designation. The PS8502-AX is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements.

HCPL-4504#020 and HCPL-4504-020E (Parametric Equivalents): Both Broadcom HCPL-4504 variants meet all mandatory isolation, package, and channel specifications. These parts deliver superior switching performance (200ns turn-on time vs. 500ns for PS8602-A) and higher current transfer ratio (25-60% vs. 15% minimum). Selection between these two depends on regulatory requirements: HCPL-4504-020E is ROHS3 Compliant and REACH Unaffected, while HCPL-4504#020 is RoHS non-compliant. Both feature reduced maximum output voltage (20V vs. 35V), suitable for applications operating below this threshold. The superior performance characteristics of the HCPL-4504 series make them preferred for new designs where 20V output voltage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PS8602-A with PS8502-AX in existing circuits? A: Yes. The PS8502-AX provides direct electrical and mechanical compatibility with identical isolation voltage, current transfer ratio, output voltage rating, and 8-DIP package configuration.

Q: What is the key difference between PS8502-AX and the HCPL-4504 variants? A: The PS8502-AX matches the PS8602-A current transfer ratio (15% minimum) and 35V maximum output voltage. The HCPL-4504 variants offer higher current transfer ratio (25-60%) and faster switching but limit output voltage to 20V. Choose based on your application's output voltage requirement.

Q: Are all three substitutes pin-compatible with PS8602-A? A: All three substitutes use the 8-DIP (0.300", 7.62mm) package and through-hole mounting, ensuring mechanical and pin-compatible replacement in applications designed for this package format.

Q: Which substitute is best for a new design? A: Selection depends on output voltage requirements. For circuits requiring up to 20V output, the HCPL-4504-020E is recommended due to ROHS3 compliance, active status, and superior switching performance. For applications requiring 35V output capability, use PS8502-AX.

Q: What is the compliance difference between HCPL-4504#020 and HCPL-4504-020E? A: Both are electrically identical. The primary difference is regulatory compliance: HCPL-4504-020E is ROHS3 Compliant and REACH Unaffected, while HCPL-4504#020 is RoHS non-compliant. For new designs, specify HCPL-4504-020E.

Q: Why is the PS8602-A marked obsolete? A: The PS8602-A has been discontinued by the original manufacturer. Active substitutes with equivalent or superior performance are available from alternative sources.

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