SFH600-2 Equivalent & Substitute Parts

Part Overview

The SFH600-2 is a high-isolation optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This 6-DIP package device provides 5300Vrms isolation with a single channel transistor output configuration. The part is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for design continuity, long-term sourcing strategy, and production planning when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH600-2
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Package / Case	6-DIP (0.300", 7.62mm)
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SFH600-2 is determined by the following critical parameters:

Primary Compatibility Criteria:

Package / Case: 6-DIP (0.300", 7.62mm) — mechanical and pin compatibility
Number of Channels: 1 — functional equivalence
Output Type: Transistor with Base — circuit interface compatibility
Voltage - Isolation: 5300Vrms or higher — electrical safety requirement
Current Transfer Ratio range: 100% to 200% @ 10mA — performance specification
Voltage - Output (Max): 70V or higher — load capability
Current - Output / Channel: 50mA or higher — drive capability
Operating Temperature: -55°C ~ 100°C — thermal compatibility
Input Type: DC — signal type compatibility

Substitute parts are grouped into two categories based on isolation voltage and current transfer ratio specifications:

Group A (5300Vrms Isolation): SFH601-3, CNY17-1X, CNY17-2X, CNY17-4X, CNY17-5, CNY17-5X — direct voltage-class equivalents with matching or superior isolation ratings.

Group B (5000Vrms Isolation): CNY17-1, CNY17-2, CNY17-3-000E, CNY17-4 — lower isolation voltage but functionally compatible for applications not requiring 5300Vrms isolation.

Parameter Comparison

Parameter	SFH600-2	SFH601-3	CNY17-1	CNY17-1X	CNY17-2	CNY17-2X	CNY17-3-000E	CNY17-4	CNY17-4X	CNY17-5	CNY17-5X
Manufacturer	Vishay	Vishay	Lite-On	Isocom	Lite-On	Isocom	Broadcom	Lite-On	Isocom	Isocom	Isocom
Package / Case	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP	6-DIP
Voltage - Isolation	5300Vrms	5000Vrms	5000Vrms	5300Vrms	5000Vrms	5300Vrms	5000Vrms	5000Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	100%	100%	40%	40%	63%	63%	100%	160%	160%	200%	200%
Current Transfer Ratio (Max)	200%	200%	80%	80%	125%	125%	200%	320%	320%	400%	400%
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor	Transistor with Base
Voltage - Output (Max)	70V	100V	70V	70V	70V	70V	70V	70V	70V	70V	70V
Current - Output / Channel	50mA	50mA	150mA	50mA	150mA	50mA	150mA	150mA	50mA	50mA	50mA
Operating Temperature	-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	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Input Type	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): SFH601-3 is the primary direct replacement. It maintains the same manufacturer (Vishay), identical package, matching current transfer ratio range (100% to 200%), and equivalent electrical performance. The isolation voltage is reduced from 5300Vrms to 5000Vrms, which is acceptable for most applications not specifically requiring the higher isolation rating. Product status is Active, ensuring long-term availability.

5300Vrms Isolation Equivalents: For applications requiring 5300Vrms isolation, CNY17-1X, CNY17-2X, CNY17-4X, CNY17-5, and CNY17-5X are suitable alternatives. These parts maintain the higher isolation voltage specification. CNY17-1X and CNY17-2X have lower current transfer ratios (40% to 80%, 63% to 125% respectively) compared to the SFH600-2. CNY17-4X and CNY17-5X provide higher current transfer ratios (160% to 320%, 200% to 400% respectively). All are manufactured by Isocom Components and carry Active product status.

5000Vrms Isolation Alternatives: CNY17-1, CNY17-2, CNY17-3-000E, and CNY17-4 operate at 5000Vrms isolation. These parts are manufactured by Lite-On (CNY17-1, CNY17-2, CNY17-4) or Broadcom (CNY17-3-000E). All carry Active product status. CNY17-1 and CNY17-2 feature higher output current capability (150mA vs. 50mA) and lower current transfer ratios. CNY17-3-000E and CNY17-4 provide current transfer ratios matching or exceeding the SFH600-2 specification.

Compliance Considerations: All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the SFH600-2. All operate within the -55°C to 100°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can CNY17-1 replace SFH600-2 directly? A: CNY17-1 is mechanically compatible (6-DIP package) and functionally equivalent for most applications. However, it operates at 5000Vrms isolation versus the SFH600-2's 5300Vrms, and has a lower current transfer ratio range (40% to 80% vs. 100% to 200%). Use CNY17-1 only if your application does not require 5300Vrms isolation and can tolerate the lower current transfer ratio specification.

Q: What is the difference between CNY17-2X and CNY17-4X? A: Both are manufactured by Isocom and operate at 5300Vrms isolation in 6-DIP packages. The primary difference is current transfer ratio: CNY17-2X ranges from 63% to 125%, while CNY17-4X ranges from 160% to 320%. Select CNY17-4X for applications requiring higher current transfer efficiency.

Q: Why does SFH601-3 have a lower isolation voltage than SFH600-2? A: SFH601-3 is rated at 5000Vrms versus SFH600-2's 5300Vrms. This is a design variation within the Vishay SFH600/SFH601 product family. For applications where 5000Vrms isolation is sufficient, SFH601-3 provides the closest functional match with identical current transfer ratio performance and Active product status.

Q: Are all substitute parts available in the same packaging? A: Yes. All substitute parts listed are supplied in 6-DIP (0.300", 7.62mm) through-hole packages, ensuring mechanical compatibility with SFH600-2 PCB layouts.

Q: Which substitute part has the highest current transfer ratio? A: CNY17-5 and CNY17-5X both provide 200% to 400% current transfer ratio, the highest among all listed substitutes. Both are manufactured by Isocom and operate at 5300Vrms isolation.

Q: Is CNY17-5 suitable as a replacement if my circuit uses the base output? A: CNY17-5 is specified as "Transistor" output without base, while SFH600-2 is "Transistor with Base." Use CNY17-5X instead, which includes base output and maintains all other electrical specifications.

Q: What is the inventory status of substitute parts? A: All substitute parts carry Active product status with available inventory. SFH601-3 has 5110 pcs, CNY17-4 has the highest inventory at 89800 pcs, and CNY17-1X has the lowest at 1021 pcs. Verify current availability with your supplier for production quantities.

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