PS2841-4B-F4-A Equivalent & Substitute Parts

Part Overview

The PS2841-4B-F4-A is a 4-channel optoisolator with transistor output manufactured by CEL, designed for 1500Vrms isolation applications. This component features a 12-BSOP surface mount package and supports DC input with transistor output configuration. The part is classified as obsolete, necessitating identification of active equivalent alternatives for continued system support and new design implementations.

Key Parameters

Parameter	Value
Number of Channels	4
Voltage - Isolation	1500Vrms
Current Transfer Ratio (Min)	100% @ 1mA
Current Transfer Ratio (Max)	400% @ 1mA
Output Type	Transistor
Voltage - Output (Max)	70V
Current - Output / Channel	20mA
Vce Saturation (Max)	300mV
Operating Temperature	-40°C ~ 100°C
Package / Case	12-BSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the PS2841-4B-F4-A is determined by strict equivalence across the following critical parameters:

Isolation Voltage: 1500Vrms (mandatory match)
Channel Count: 4 channels (mandatory match)
Output Configuration: Transistor output (mandatory match)
Current Transfer Ratio Range: 100% to 400% @ 1mA (mandatory match)
Maximum Output Voltage: 70V (mandatory match)
Output Current per Channel: 20mA (mandatory match)
Vce Saturation: 300mV maximum (mandatory match)
Operating Temperature Range: -40°C to 100°C (mandatory match)
Package Type: 12-BSOP surface mount (mandatory match)
Series: NEPOC (mandatory match)

The identified substitutes maintain identical electrical and mechanical specifications across all parameters. Differences exist only in manufacturer designation, product status, and compliance certifications.

Parameter Comparison

Parameter	PS2841-4B-F4-A (CEL)	PS2841-4B-F3-AX (Renesas)	PS2841-4A-F3-AX (Renesas)
Manufacturer	CEL	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Status	Obsolete	Active	Active
Number of Channels	4	4	4
Voltage - Isolation	1500Vrms	1500Vrms	1500Vrms
Current Transfer Ratio (Min)	100% @ 1mA	100% @ 1mA	100% @ 1mA
Current Transfer Ratio (Max)	400% @ 1mA	400% @ 1mA	400% @ 1mA
Output Type	Transistor	Transistor	Transistor
Voltage - Output (Max)	70V	70V	70V
Current - Output / Channel	20mA	20mA	20mA
Voltage - Forward (Vf) (Typ)	1.1V	1.1V	1.1V
Current - DC Forward (If) (Max)	20 mA	20 mA	20 mA
Vce Saturation (Max)	300mV	300mV	300mV
Rise / Fall Time (Typ)	20µs, 110µs	20µs, 110µs	20µs, 110µs
Operating Temperature	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Package / Case	12-BSOP (0.173", 4.40mm Width)	12-BSOP (0.173", 4.40mm Width)	12-BSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Series	NEPOC	NEPOC	NEPOC
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.49.8000	8541.49.8000	8541.49.8000

Engineering Selection Recommendations

PS2841-4B-F3-AX (Renesas Electronics Corporation) is the direct manufacturer equivalent. This part carries active product status and is ROHS3 compliant. The PS2841-4B-F3-AX maintains identical electrical specifications and package configuration to the obsolete PS2841-4B-F4-A, with the distinction of REACH unaffected status compared to the original part's REACH affected designation.

PS2841-4A-F3-AX (Renesas Electronics Corporation) is a parametric equivalent classified as a substitute part. This component shares all critical electrical and mechanical parameters with the main part and carries active product status with ROHS3 compliance. The PS2841-4A-F3-AX differs only in the internal device designation (4A versus 4B), while maintaining full functional equivalence across all specified parameters.

Both substitute parts are manufactured by Renesas Electronics Corporation and are available in active production status, providing long-term supply continuity for applications currently using the obsolete PS2841-4B-F4-A.

Frequently Asked Questions (FAQ)

Q: Can PS2841-4B-F3-AX directly replace PS2841-4B-F4-A in existing designs?

A: Yes. The PS2841-4B-F3-AX is a direct equivalent with identical electrical specifications, isolation voltage, channel configuration, output current ratings, and 12-BSOP package dimensions. No circuit modifications are required.

Q: What is the difference between PS2841-4B-F3-AX and PS2841-4A-F3-AX?

A: Both parts are parametric equivalents with identical electrical performance across all specified parameters. The difference lies in the internal device designation (4B versus 4A). Both are suitable substitutes for the PS2841-4B-F4-A.

Q: Are the substitute parts pin-compatible with the original PS2841-4B-F4-A?

A: Yes. All three parts use the 12-BSOP package with identical pin configuration and spacing (0.173" width, 4.40mm). Direct PCB footprint compatibility is confirmed.

Q: What compliance advantages do the Renesas substitutes offer?

A: The PS2841-4B-F3-AX and PS2841-4A-F3-AX are ROHS3 compliant and carry REACH unaffected status, compared to the original part's REACH affected designation. Both maintain EAR99 export classification and identical HTSUS coding.

Q: Is there a supply advantage to using the substitute parts?

A: Yes. Both Renesas substitutes carry active product status with higher inventory availability (1274 and 1502 units respectively) compared to the obsolete PS2841-4B-F4-A, ensuring long-term supply continuity.

Q: Do the substitute parts maintain the same operating temperature range?

A: Yes. All three parts operate across the identical temperature range of -40°C to 100°C with matching Moisture Sensitivity Level 1 (Unlimited) ratings.

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts maintain identical current transfer ratios (100% to 400% @ 1mA), maximum output voltage (70V), output current per channel (20mA), Vce saturation (300mV maximum), and rise/fall times (20µs, 110µs).

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