ACPL-M49U-000E Equivalent & Substitute Parts

Part Overview

The ACPL-M49U-000E is a single-channel optoisolator with transistor output manufactured by Broadcom Limited. This component provides 3750Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation in surface-mount configurations. The part is currently in active production status with 801 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same isolation voltage class and package family.

Key Parameters

Parameter	Value
Manufacturer Part Number	ACPL-M49U-000E
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	32% @ 10mA
Current Transfer Ratio (Max)	80% @ 10mA
Output Type	Transistor
Voltage - Output (Max)	20V
Current - Output / Channel	8mA
Operating Temperature	-40°C ~ 125°C
Package / Case	6-SOIC (0.173", 4.40mm Width), 5 Leads
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the ACPL-M49U-000E are classified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Isolation: 3750Vrms or higher
Number of Channels: 1
Output Type: Transistor
Voltage - Output (Max): 20V
Current - Output / Channel: 8mA
Input Type: DC
Mounting Type: Surface Mount
Package compatibility: 5-SO or 6-SO, 5 Lead configurations

Parametric Equivalent Parts maintain identical isolation voltage (3750Vrms) and electrical specifications within the allowed ranges. These parts are direct functional replacements with no design modifications required.

Manufacturer Recommended Parts (Toshiba TLP109 series) provide equivalent isolation voltage and output characteristics but originate from a different manufacturer. These parts are qualified alternatives with comparable performance within the specified parameter ranges.

Parameter Comparison

Parameter	ACPL-M49U-000E	ACPL-M43U-000E	ACPL-M49T-000E	TLP109(E	TLP109(IGM-TPR,E	TLP109(TPL,E
Manufacturer	Broadcom	Broadcom	Broadcom	Toshiba	Toshiba	Toshiba
Voltage - Isolation	3750Vrms	3750Vrms	4000Vrms	3750Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1	1	1	1
Current Transfer Ratio (Min)	32% @ 10mA	32% @ 10mA	32% @ 10mA	20% @ 16mA	25% @ 10mA	20% @ 16mA
Current Transfer Ratio (Max)	80% @ 10mA	80% @ 10mA	80% @ 10mA	Not specified	75% @ 10mA	Not specified
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	20V	20V	20V	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.5V	1.64V	1.64V	1.64V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
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 (0.179", 4.55mm Width), 5 Leads	6-SOIC (0.179", 4.55mm Width), 5 Leads	6-SOIC (0.179", 4.55mm Width), 5 Leads
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active
Packaging	Tube	Tube	Tube	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

ACPL-M43U-000E (Broadcom Limited): This part is a parametric equivalent with identical isolation voltage (3750Vrms), current transfer ratio range (32%-80% @ 10mA), and operating temperature specifications (-40°C ~ 125°C). Both parts are ROHS3 compliant and in active production. The ACPL-M43U-000E offers higher inventory availability (3068 units) compared to the main part. Turn-on/turn-off timing differs (200ns/300ns versus 20µs/20µs), which may affect circuit performance in timing-critical applications.

ACPL-M49T-000E (Broadcom Limited): This part provides enhanced isolation voltage (4000Vrms versus 3750Vrms) while maintaining all other electrical specifications. It is suitable for applications requiring higher isolation margins. ROHS3 compliant and active production status. Inventory availability is 1259 units.

TLP109(IGM-TPR,E (Toshiba Semiconductor and Storage): This manufacturer-recommended alternative provides equivalent 3750Vrms isolation voltage with comparable current transfer ratio (25%-75% @ 10mA). Extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin. Packaged in Tape & Reel format with highest inventory availability (10310 units). ROHS3 compliant and active production. Package dimensions differ slightly (0.179" versus 0.173" width), requiring PCB layout verification.

TLP109(E and TLP109(TPL,E (Toshiba Semiconductor and Storage): These variants provide equivalent isolation voltage with extended operating temperature range (-55°C ~ 125°C). Available in Tube and Cut Tape packaging respectively. Current transfer ratio specifications differ (20% @ 16mA minimum), which may require circuit design verification. ROHS3 compliant and active production.

All substitute parts maintain ROHS3 compliance and active production status, ensuring long-term availability and regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can ACPL-M43U-000E be used as a direct replacement for ACPL-M49U-000E?

A: Yes, the ACPL-M43U-000E is a parametric equivalent with identical isolation voltage (3750Vrms), output voltage (20V maximum), output current (8mA), and operating temperature range (-40°C ~ 125°C). Both are single-channel transistor output optoisolators in 5-SO package configuration. The primary difference is turn-on/turn-off timing (200ns/300ns versus 20µs/20µs), which must be evaluated for timing-critical circuit applications.

Q: What is the difference between ACPL-M49U-000E and ACPL-M49T-000E?

A: The ACPL-M49T-000E provides higher isolation voltage (4000Vrms versus 3750Vrms) while maintaining identical electrical output specifications. Both parts share the same base product number (ACPL-M49) and are manufactured by Broadcom. The ACPL-M49T-000E is suitable for designs requiring enhanced isolation margins or operating in higher voltage environments.

Q: Are Toshiba TLP109 parts compatible with Broadcom ACPL-M49U-000E?

A: Toshiba TLP109 variants provide equivalent 3750Vrms isolation voltage and transistor output specifications. All TLP109 variants maintain 20V maximum output voltage and 8mA output current per channel. Package dimensions differ slightly (6-SOIC 0.179" width versus 0.173" width), requiring PCB layout verification before substitution. Operating temperature range extends to -55°C on Toshiba parts, providing additional thermal capability.

Q: What packaging options are available for substitute parts?

A: Broadcom ACPL-M43U-000E and ACPL-M49T-000E are supplied in Tube packaging. Toshiba TLP109(IGM-TPR,E is supplied in Tape & Reel format. Toshiba TLP109(TPL,E is supplied in Cut Tape & Digi-Reel® format. Toshiba TLP109(E is supplied in Tube packaging. Packaging selection affects handling, storage, and automated assembly processes.

Q: Do all substitute parts meet RoHS compliance?

A: Yes, all listed substitute parts (ACPL-M43U-000E, ACPL-M49T-000E, and all TLP109 variants) are ROHS3 compliant, matching the compliance status of the original ACPL-M49U-000E component.

Q: What are the current transfer ratio specifications for each part?

A: ACPL-M49U-000E, ACPL-M43U-000E, and ACPL-M49T-000E specify 32% minimum and 80% maximum current transfer ratio at 10mA input. Toshiba TLP109(IGM-TPR,E specifies 25% minimum and 75% maximum at 10mA. Toshiba TLP109(E and TLP109(TPL,E specify 20% minimum at 16mA input current. These differences may affect circuit gain calculations and should be verified during design validation.

Q: Which substitute part has the best inventory availability?

A: Toshiba TLP109(IGM-TPR,E offers the highest inventory availability with 10310 units in stock, followed by ACPL-M43U-000E with 3068 units. The original ACPL-M49U-000E has 801 units available.

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