PS8101-F3-A Optoisolator Equivalent & Substitute Parts

Part Overview

The PS8101-F3-A is a single-channel optoisolator with transistor output manufactured by CEL, rated for 3750Vrms isolation voltage. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The PS8101-F3-A operates with DC input, delivers transistor output, and is packaged in a 5-SOP surface mount configuration suitable for high-voltage isolation applications.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	15% @ 16mA
Current Transfer Ratio (Max)	35% @ 16mA
Turn On / Turn Off Time (Typ)	500ns, 600ns
Maximum Output Voltage	35V
Output Current per Channel	8mA
Forward Voltage (Vf) (Typ)	1.7V
Maximum DC Forward Current	25mA
Operating Temperature Range	-55°C to 100°C
Mounting Type	Surface Mount
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads
Input Type	DC
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PS8101-F3-A are categorized into two groups based on electrical and mechanical compatibility:

Direct Equivalent (Identical Electrical Specifications): The PS8101-F3-AX from Renesas Electronics Corporation provides direct equivalence with identical isolation voltage (3750Vrms), current transfer ratio range (15% to 35% @ 16mA), switching times (500ns, 600ns), output voltage (35V), and operating temperature range (-55°C to 100°C). This part maintains the same 5-SOP package configuration and surface mount characteristics.

Similar Substitutes (Compatible Electrical Parameters with Variations): Parts from the Broadcom Limited R²Coupler™ series (ACPL-M43T, ACPL-M43T-000E, ACPL-M43T-500, ACPL-M43T-500E, ACPL-M43U-000E, ACPL-M43U-500E, ACPL-M49T-000E, ACPL-M49T-500E) provide functional substitution with the following key parameter alignment:

Single-channel transistor output optoisolators
Surface mount 5-SOP package configuration
8mA output current per channel
DC input type
Moisture sensitivity level 1 (Unlimited)
Same HTSUS and ECCN classifications

Key parameter differences in similar substitutes include:

Isolation voltage: 4000Vrms (ACPL-M43T series and ACPL-M49T series) versus 3750Vrms (ACPL-M43U series)
Current transfer ratio: 32% to 100% @ 10mA (ACPL-M43T series) or 32% to 80% @ 10mA (ACPL-M43U and ACPL-M49T series)
Switching times: 150ns to 500ns (ACPL-M43T series) or 200ns to 300ns (ACPL-M43U series)
Maximum output voltage: 20V (all Broadcom parts) versus 35V (PS8101-F3-A)
Operating temperature: -40°C to 125°C (Broadcom automotive-grade parts) versus -55°C to 100°C (PS8101-F3-A)

Parameter Comparison

Parameter	PS8101-F3-A (Main)	PS8101-F3-AX (Direct)	ACPL-M43T Series	ACPL-M43U Series	ACPL-M49T Series
Manufacturer	CEL	Renesas Electronics	Broadcom Limited	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active	Active
Isolation Voltage	3750Vrms	3750Vrms	4000Vrms	3750Vrms	4000Vrms
Number of Channels	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Current Transfer Ratio (Min)	15% @ 16mA	15% @ 16mA	32% @ 10mA	32% @ 10mA	32% @ 10mA
Current Transfer Ratio (Max)	35% @ 16mA	35% @ 16mA	100% @ 10mA	80% @ 10mA	80% @ 10mA
Turn On / Turn Off Time (Typ)	500ns, 600ns	500ns, 600ns	150ns, 500ns	200ns, 300ns	Not specified
Maximum Output Voltage	35V	35V	20V	20V	20V
Output Current per Channel	8mA	8mA	8mA	8mA	8mA
Forward Voltage (Vf) (Typ)	1.7V	1.7V	1.55V	1.5V	1.5V
Maximum DC Forward Current	25mA	25mA	20mA	20mA	20mA
Operating Temperature Range	-55°C to 100°C	-55°C to 100°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads	6-SOIC (0.173", 4.40mm Width), 5 Leads
Input Type	DC	DC	DC	DC	DC
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	RoHS non-compliant / ROHS3 Compliant (variant)	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement: The PS8101-F3-AX from Renesas Electronics Corporation is the primary direct equivalent. This part maintains identical electrical specifications including 3750Vrms isolation voltage, 15% to 35% current transfer ratio at 16mA, 500ns/600ns switching times, and 35V maximum output voltage. The PS8101-F3-AX is active in production status with ROHS3 compliance and REACH unaffected status, providing superior regulatory alignment compared to the obsolete PS8101-F3-A. Packaging options include Cut Tape and Digi-Reel formats with 3600 pieces in stock.

For Similar Substitution with Design Considerations: The Broadcom Limited R²Coupler™ series optoisolators provide functional alternatives when design parameters permit tolerance of specification variations. Selection within this series depends on application requirements:

ACPL-M43U-000E and ACPL-M43U-500E maintain the 3750Vrms isolation voltage matching the PS8101-F3-A, with improved current transfer ratio (32% to 80% @ 10mA) and faster switching (200ns/300ns). These parts operate at -40°C to 125°C, extending the upper temperature limit. Maximum output voltage is reduced to 20V. ROHS3 compliance and REACH unaffected status are confirmed.
ACPL-M43T series and ACPL-M49T series provide 4000Vrms isolation voltage with enhanced performance characteristics. ACPL-M43T variants offer current transfer ratio up to 100% @ 10mA with 150ns turn-on time. ACPL-M49T variants provide 32% to 80% current transfer ratio. All variants operate at -40°C to 125°C. Maximum output voltage is 20V. ROHS3 compliance is available in specific packaging variants.

All Broadcom parts carry AEC-Q100 automotive qualification where applicable, providing additional reliability assurance for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the PS8101-F3-AX be used as a direct drop-in replacement for the PS8101-F3-A?

A: Yes. The PS8101-F3-AX maintains identical electrical specifications across all critical parameters: 3750Vrms isolation voltage, 15% to 35% current transfer ratio at 16mA, 500ns/600ns switching times, 35V maximum output voltage, and -55°C to 100°C operating temperature range. Both parts use the same 5-SOP package configuration. The primary advantage of PS8101-F3-AX is active production status and improved regulatory compliance (ROHS3, REACH unaffected).

Q: What are the key differences between the PS8101-F3-A and Broadcom ACPL-M43U series?

A: Both maintain 3750Vrms isolation voltage. The ACPL-M43U series provides higher current transfer ratio (32% to 80% @ 10mA versus 15% to 35% @ 16mA), faster switching times (200ns/300ns versus 500ns/600ns), and extended upper operating temperature (125°C versus 100°C). The ACPL-M43U series reduces maximum output voltage to 20V compared to 35V on the PS8101-F3-A. Both use identical 5-SOP packaging.

Q: Why do some Broadcom substitutes specify 4000Vrms isolation instead of 3750Vrms?

A: The ACPL-M43T and ACPL-M49T series are rated for 4000Vrms isolation voltage, which exceeds the PS8101-F3-A specification of 3750Vrms. This higher isolation rating provides additional safety margin in high-voltage isolation applications. The 4000Vrms rating is compatible with designs requiring 3750Vrms isolation, as it represents a higher performance specification.

Q: Are there packaging format differences between substitute parts?

A: Yes. The PS8101-F3-AX is available in Cut Tape and Digi-Reel formats. Broadcom ACPL-M43U and ACPL-M49T series are available in multiple packaging options: Tube, Tape & Reel (TR), and Cut Tape & Digi-Reel. All parts maintain the same 5-SOP physical package configuration (6-SOIC, 0.173", 4.40mm width, 5 leads). Selection of packaging format depends on procurement and assembly requirements.

Q: What is the significance of RoHS and REACH compliance in substitute selection?

A: The PS8101-F3-A is REACH Affected and RoHS status is not specified. The PS8101-F3-AX is ROHS3 Compliant and REACH Unaffected, providing superior regulatory alignment for applications subject to European environmental directives. Broadcom ACPL-M43U and ACPL-M49T series are ROHS3 Compliant and REACH Unaffected. For applications requiring regulatory compliance documentation, these active-status substitutes provide clearer compliance pathways than the obsolete PS8101-F3-A.

Q: How do current transfer ratio specifications affect circuit design?

A: Current transfer ratio (CTR) determines the output current relative to input current. The PS8101-F3-A specifies 15% to 35% CTR at 16mA input. Broadcom substitutes specify 32% to 80% or 32% to 100% CTR at 10mA input. Higher CTR values reduce input current requirements for equivalent output performance. Circuit designs must account for the specified CTR range and input current levels when selecting substitutes to ensure adequate output drive capability.

Q: Can the ACPL-M43T series with 20V maximum output voltage replace the PS8101-F3-A with 35V maximum output voltage?

A: Substitution is application-dependent. If the circuit design operates within 20V output voltage limits, the ACPL-M43T series is compatible. If the design requires output voltages exceeding 20V, the ACPL-M43T series is not suitable. The PS8101-F3-AX maintains the 35V maximum output voltage specification and is the appropriate choice for applications requiring higher output voltage capability.

Q: What is the inventory status of substitute parts?

A: PS8101-F3-AX: 3600 pieces in stock. ACPL-M43T-500E: 17654 pieces in stock. ACPL-M49T-500E: 33200 pieces in stock. ACPL-M43U-500E: 3592 pieces in stock. Broadcom R²Coupler™ series parts demonstrate strong inventory availability, supporting procurement continuity for designs transitioning from the obsolete PS8101-F3-A.

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