SFH6325-X009 Equivalent & Substitute Parts

Part Overview

The SFH6325-X009 is a 2-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage and is designed for applications requiring high-voltage signal isolation with dual-channel capability. The part is currently obsolete, making equivalent and substitute components necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH6325-X009
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	7% @ 16mA
Turn On / Turn Off Time (Typ)	300ns, 600ns
Output Type	Transistor
Voltage - Output (Max)	25V
Current - Output / Channel	8mA
Voltage - Forward (Vf) (Typ)	1.33V
Current - DC Forward (If) (Max)	25 mA
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	8-SMD, Gull Wing
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SFH6325-X009 is determined by the following critical parameters:

Number of Channels: 2-channel configuration required
Voltage - Isolation: Minimum 5000Vrms (SFH6325-X009 specifies 5300Vrms)
Output Type: Transistor output
Current Transfer Ratio (Min): 7% @ 16mA or higher
Mounting Type: Surface Mount
Package / Case: 8-SMD, Gull Wing
Operating Temperature Range: -55°C ~ 100°C or compatible subset
Current - Output / Channel: 8mA
Voltage - Output (Max): 20V or higher

Substitute parts are grouped into two categories:

Category A - Direct 2-Channel Transistor Output Substitutes (5000Vrms isolation):

HCPL-2530-520E (Broadcom Limited)
HCPL-4534-520E (Broadcom Limited)
HCPL-253L-520E (Broadcom Limited)

Category B - 2-Channel Transistor Output Substitutes (3750Vrms isolation):

HCPL-2533-300E (Broadcom Limited)
HCPL-2533-500E (Broadcom Limited)
HCPL-253L-500E (Broadcom Limited)

Category C - Single-Channel Darlington with Base Output Substitutes (5000Vrms isolation):

ICPL2530SM (Isocom Components 2004 LTD)
ICPL2530SMT&R (Isocom Components 2004 LTD)
ICPL2531SM (Isocom Components 2004 LTD)
ICPL2531SMT&R (Isocom Components 2004 LTD)

Parameter Comparison

Part Number	Manufacturer	Channels	Isolation (Vrms)	CTR Min @ 16mA	Output Type	Vout Max (V)	Iout / Channel (mA)	Vf Typ (V)	Temp Range (°C)	Status
SFH6325-X009	Vishay	2	5300	7%	Transistor	25	8	1.33	-55 to 100	Obsolete
HCPL-2530-520E	Broadcom	2	5000	7%	Transistor	20	8	1.5	-55 to 100	Active
HCPL-253L-520E	Broadcom	2	5000	19%	Transistor	7	8	1.5	-55 to 100	Active
HCPL-4534-520E	Broadcom	2	5000	15%	Transistor	20	8	1.5	-55 to 100	Active
HCPL-2533-300E	Broadcom	2	3750	15%	Transistor	7	8	1.5	-55 to 100	Active
HCPL-2533-500E	Broadcom	2	3750	15%	Transistor	7	8	1.5	-55 to 100	Active
HCPL-253L-500E	Broadcom	2	3750	19%	Transistor	7	8	1.5	-55 to 100	Active
ICPL2530SM	Isocom	1	5000	7%	Darlington w/ Base	20	—	1.45	-40 to 100	Active
ICPL2530SMT&R	Isocom	1	5000	7%	Darlington w/ Base	20	—	1.45	-40 to 100	Active
ICPL2531SM	Isocom	1	5000	19%	Darlington w/ Base	20	—	1.45	-40 to 100	Active
ICPL2531SMT&R	Isocom	1	5000	19%	Darlington w/ Base	20	—	1.45	-40 to 100	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

HCPL-2530-520E and HCPL-4534-520E are the preferred substitutes. Both maintain 5000Vrms isolation voltage, 2-channel transistor output configuration, and active product status. HCPL-2530-520E provides identical 7% minimum current transfer ratio at 16mA, while HCPL-4534-520E offers 15% minimum CTR. Both support the full -55°C to 100°C operating temperature range and are ROHS3 compliant with MSL 1 rating.

Secondary Substitutes (Reduced Isolation Voltage):

HCPL-253L-520E, HCPL-2533-300E, HCPL-2533-500E, and HCPL-253L-500E provide 3750Vrms isolation, which is lower than the original 5300Vrms specification. These are suitable only for applications where 3750Vrms isolation meets system requirements. All maintain 2-channel transistor output and active product status with ROHS3 compliance.

Alternative Configuration (Single-Channel Darlington Output):

ICPL2530SM, ICPL2530SMT&R, ICPL2531SM, and ICPL2531SMT&R are single-channel optoisolators with Darlington output and base connection. These provide 5000Vrms isolation but differ in output type and channel count. These are suitable only for applications redesigned to accommodate single-channel operation with Darlington output characteristics. Operating temperature range is -40°C to 100°C, which excludes the lower -55°C specification of the original part.

All recommended substitutes are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can HCPL-2530-520E directly replace SFH6325-X009 in existing designs?

A: HCPL-2530-520E is compatible for direct replacement in most applications. Both are 2-channel transistor output optoisolators with 8-SMD Gull Wing packaging. The primary difference is isolation voltage: HCPL-2530-520E provides 5000Vrms versus SFH6325-X009's 5300Vrms. If your circuit design requires 5300Vrms isolation, this substitution is not suitable. Maximum output voltage is 20V (versus 25V on the original), which may affect high-voltage switching applications.

Q: Why do some substitutes have lower isolation voltage ratings?

A: HCPL-2533 and HCPL-253L series parts provide 3750Vrms isolation, which is lower than the original 5300Vrms specification. These parts are included as substitutes because they maintain the 2-channel transistor output configuration and 8-SMD packaging. Selection depends on your application's isolation voltage requirement. If 3750Vrms meets your system specification, these parts are viable alternatives.

Q: What is the difference between ICPL2530SM and ICPL2530SMT&R?

A: Both parts are electrically identical. ICPL2530SM is supplied in Tube packaging, while ICPL2530SMT&R is supplied in Tape & Reel (TR) format. The packaging difference affects handling and automated assembly compatibility. Tape & Reel format is standard for high-volume surface mount production.

Q: Can I use ICPL2531SMT&R as a substitute for SFH6325-X009?

A: ICPL2531SMT&R differs significantly from SFH6325-X009. It is a single-channel optoisolator with Darlington output and base connection, whereas SFH6325-X009 is a 2-channel transistor output device. This substitution requires circuit redesign to accommodate single-channel operation and Darlington output characteristics. Additionally, the operating temperature range is -40°C to 100°C, which does not support the original part's -55°C lower limit.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of SFH6325-X009.

Q: What is the significance of Current Transfer Ratio (CTR) differences?

A: Current Transfer Ratio determines the optical coupling efficiency between input and output. SFH6325-X009 specifies 7% minimum CTR at 16mA. HCPL-2530-520E matches this specification, while HCPL-4534-520E provides 15% minimum CTR. Higher CTR values indicate more efficient coupling and may allow reduced input current for equivalent output performance. Selection depends on your circuit's input current capability and output current requirements.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tube and Tape & Reel (TR) packaging formats. Tube packaging is suitable for manual assembly and lower-volume applications. Tape & Reel format is standard for automated surface mount production. All parts maintain 8-SMD Gull Wing package geometry compatible with SFH6325-X009 PCB layouts.

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