PS8602L2-A Equivalent and Substitute Parts Reference

Part Overview

The PS8602L2-A is an optoisolator transistor output with 5000Vrms isolation voltage manufactured by CEL in 8-SMD Gull Wing package. This component has reached obsolete product status, requiring identification of equivalent or substitute parts for ongoing system support and new designs. Active alternatives from established manufacturers including Broadcom Limited and Vishay Semiconductor provide enhanced or equivalent performance characteristics while maintaining compatible electrical and mechanical parameters.

Key Parameters

Parameter	PS8602L2-A
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	15% @ 16mA
Turn On Time (Typ)	500ns
Turn Off Time (Typ)	300ns
Output Type	Transistor
Voltage - Output (Max)	35V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.7V
Current - DC Forward (If) (Max)	25mA
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the PS8602L2-A are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Voltage - Isolation: Minimum 5000Vrms required
Number of Channels: 1 channel
Output Type: Transistor or Transistor with Base
Current - Output / Channel: 8mA rated capacity
Mounting Type: Surface Mount
Package / Case: 8-SMD or 8-DIP Gull Wing compatible footprints
Operating Temperature Range: -55°C to at least 85°C

Secondary Parameters for Compatibility Assessment:

Current Transfer Ratio (Min): Acceptable range 15-25% @ 16mA
Voltage - Output (Max): 15V to 35V range accommodates system requirements
Forward Voltage (Vf) and DC Forward Current (If): Within specified input drive requirements

Parts meeting all primary criteria are functionally interchangeable within the same isolation voltage class. Substitutes with higher isolation voltage ratings (5300Vrms) provide enhanced electrical margin. Parts with 3750Vrms ratings are suitable only for applications with lower isolation requirements.

Parameter Comparison

Parameter	PS8602L2-A	6N136-X017T	HCNW4504-300E	HCNW4504-500E	HCPL-4503#300	HCPL-4503#360	HCPL-4503#500	HCPL-4503#520	HCPL-4503-320E	HCPL-4503-360E	HCPL-4504#300
Manufacturer	CEL	Vishay Semiconductor Opto Division	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited
Voltage - Isolation	5000Vrms	5300Vrms	5000Vrms	5000Vrms	3750Vrms	3750Vrms	3750Vrms	5000Vrms	5000Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Current Transfer Ratio (Min)	15% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	19% @ 16mA	25% @ 16mA
Turn On / Turn Off Time (Typ)	500ns, 300ns	200ns, 200ns	200ns, 300ns	200ns, 300ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 600ns	200ns, 300ns
Output Type	Transistor	Transistor with Base	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	35V	15V	20V	20V	20V	20V	20V	20V	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.7V	1.33V	1.59V	1.59V	1.5V	1.5V	1.5V	1.5V	1.5V	1.5V	1.5V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
REACH Status	REACH Affected	Not Specified	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (5000Vrms Isolation Class):

For direct replacement in circuits requiring 5000Vrms isolation voltage, HCNW4504-300E, HCNW4504-500E, HCPL-4503#520, and HCPL-4503-320E from Broadcom Limited offer active product status with full manufacturing support. HCNW4504 series devices meet identical isolation specifications with higher current transfer ratio minimums (19% @ 16mA). All four options maintain -55°C to 100°C operating temperature compatibility with the original PS8602L2-A.

Enhanced Substitute (5300Vrms Isolation Class):

The 6N136-X017T from Vishay Semiconductor Opto Division provides 300Vrms additional isolation margin while maintaining all required electrical and mechanical parameters. This optoisolator transistor with base output operates across the full -55°C to 100°C temperature range. Superior current transfer ratio (19% @ 16mA) and faster switching times (200ns turn-on and turn-off) enhance performance. ROHS3 compliance supports modern supply chain requirements.

Alternative Substitutes (3750Vrms Isolation Class):

HCPL-4503 series variants (#300, #360, #500, -320E, -360E) and HCPL-4504#300 operate at 3750Vrms isolation voltage. These alternatives are functionally suitable only for applications where lower isolation voltage requirements are acceptable. HCPL-4503#520 operates at 5000Vrms while HCPL-4503-320E and HCPL-4503-360E both achieve 5000Vrms and 3750Vrms respectively with ROHS3 compliance.

Compliance Considerations:

HCNW4504-300E, HCNW4504-500E, 6N136-X017T, HCPL-4503-320E, and HCPL-4503-360E hold ROHS3 Compliant status. HCPL-4503#300, HCPL-4503#360, HCPL-4503#500, HCPL-4503#520, and HCPL-4504#300 are RoHS non-compliant. Broadcom Limited substitutes report REACH Unaffected status, simplifying regulatory documentation for new applications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PS8602L2-A with HCNW4504-300E or HCNW4504-500E?

A: Yes. Both HCNW4504 variants maintain identical isolation voltage (5000Vrms), single-channel configuration, 8mA output current capability, and 8-SMD Gull Wing package footprint. Operating temperature range differs only at the upper boundary (85°C maximum vs. 100°C). Current transfer ratio and switching characteristics meet or exceed original specifications.

Q: Why do HCPL-4503 series parts show different isolation voltages?

A: HCPL-4503 base product includes multiple variants with 3750Vrms isolation (HCPL-4503#300, #360, #500, -360E) and 5000Vrms isolation (HCPL-4503#520, -320E). Isolation voltage is a critical substitution parameter. Only #520 and -320E variants provide equivalent 5000Vrms isolation for direct substitution. Other variants require application review.

Q: Is 6N136-X017T fully equivalent to PS8602L2-A?

A: 6N136-X017T meets all primary substitution criteria with enhanced 5300Vrms isolation voltage and superior current transfer ratio (19% vs. 15% minimum). The transistor with base output configuration provides additional design flexibility compared to standard transistor output. Operating temperature range (-55°C to 100°C) and output characteristics remain fully compatible.

Q: What are the package differences among substitute parts?

A: All listed substitutes employ 8-SMD Gull Wing surface mount packages with identical mechanical compatibility. Broadcom HCNW4504 variants are supplied in Tube or Cut Tape & Digi-Reel® packaging options. Broadcom HCPL-4503 variants are supplied in Tube or Tape & Reel (TR) packaging. Package styles do not affect circuit board footprint or electrical performance.

Q: Should I select a ROHS3 compliant part?

A: ROHS3 compliance status does not determine electrical equivalence or functional interchangeability. Selection depends on application regulatory requirements and supply chain policies. For new designs or restricted markets, HCNW4504-300E, HCNW4504-500E, 6N136-X017T, HCPL-4503-320E, and HCPL-4503-360E provide compliant alternatives.

Q: Which substitute has the fastest switching performance?

A: 6N136-X017T and HCNW4504 series (both 300E and 500E variants) provide 200ns turn-on and 200ns turn-off times, compared to PS8602L2-A specified 500ns turn-on and 300ns turn-off. HCPL-4503 and HCPL-4504 variants operate with 200ns turn-on and 300-600ns turn-off. Faster switching reduces propagation delay in isolation circuits.

Q: Are there current transfer ratio differences that affect circuit design?

A: PS8602L2-A specifies 15% minimum current transfer ratio. All listed substitutes specify 19% or higher (HCPL-4504#300 specifies 25% minimum). Higher transfer ratio provides greater design margin and reduced input drive current requirements. Circuit performance typically improves with higher transfer ratios; designs do not require modification for this parameter.

Q: What is the significance of "Transistor with Base" output type in 6N136-X017T?

A: 6N136-X017T provides accessible base connection enabling direct base current control. Standard transistor output (all other substitutes) provides collector-emitter path only. Both output types interface identically to emitter-grounded collector load circuits. Base connection provides additional control option if circuit topology requires base drive.

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