HMHA2801R1 Optoisolator Equivalent & Substitute Parts

Part Overview

The HMHA2801R1 is a 3750Vrms optoisolator with transistor output manufactured by onsemi. This component provides galvanic isolation for single-channel DC input applications with a 4-Mini-Flat surface mount package. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Rise / Fall Time (Typ)	3µs, 3µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.3V (Max)
Current - DC Forward (If) (Max)	50 mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	4-SOIC (0.173", 4.40mm Width)
Supplier Device Package	4-Mini-Flat
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.49.8000

Substitute Part Grouping Explanation

Substitution for the HMHA2801R1 is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage isolation rating: 3750Vrms
Number of channels: 1
Current transfer ratio range: 80% to 600% @ 5mA
Output type: Transistor
Maximum output voltage: 80V
Maximum output current: 50mA
Rise and fall time: 3µs each
Package type: 4-Mini-Flat (4-SOIC)
Operating temperature range: -55°C to 100°C
Input type: DC

The substitute parts HMHA2801R2 and HMHA2801R2V meet all these criteria and are therefore direct parametric equivalents. Differences exist only in product status, packaging format, and compliance certifications.

Parameter Comparison

Parameter	HMHA2801R1	HMHA2801R2	HMHA2801R2V
Manufacturer	onsemi	onsemi	onsemi
Number of Channels	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	600% @ 5mA
Rise / Fall Time (Typ)	3µs, 3µs	3µs, 3µs	3µs, 3µs
Input Type	DC	DC	DC
Output Type	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.3V (Max)	1.3V (Max)	1.3V (Max)
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA
Vce Saturation (Max)	300mV	300mV	300mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)
Supplier Device Package	4-Mini-Flat	4-Mini-Flat	4-Mini-Flat
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.49.8000	8541.49.8000	8541.49.8000
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Not specified	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)

Engineering Selection Recommendations

For new designs, HMHA2801R2V is the preferred substitute. This part carries Active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

For existing inventory management or legacy system maintenance where the HMHA2801R1 is no longer available, HMHA2801R2 provides an equivalent alternative with Not For New Designs status and ROHS3 compliance.

Both substitute parts maintain identical electrical performance and mechanical compatibility with the original HMHA2801R1 across all specified parameters. Selection between HMHA2801R2 and HMHA2801R2V depends on packaging requirements: Cut Tape & Digi-Reel format versus Tape & Reel format.

Frequently Asked Questions (FAQ)

Q: Can HMHA2801R2 or HMHA2801R2V be used as direct replacements for HMHA2801R1?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, isolation voltage, current transfer ratios, output characteristics, and package dimensions. They are pin-compatible and functionally interchangeable.

Q: What is the difference between HMHA2801R2 and HMHA2801R2V?

A: The parts are electrically identical. The primary difference is packaging format: HMHA2801R2 is supplied in Cut Tape & Digi-Reel format, while HMHA2801R2V is supplied in Tape & Reel format. Both carry ROHS3 compliance. HMHA2801R2V has Active product status, while HMHA2801R2 has Not For New Designs status.

Q: Why is HMHA2801R1 marked as obsolete?

A: The HMHA2801R1 has reached end-of-life status. HMHA2801R2V is the current active equivalent and should be used for new designs and ongoing production.

Q: Are there any compliance differences between the three parts?

A: HMHA2801R2 and HMHA2801R2V both carry ROHS3 compliance certification. The HMHA2801R1 does not specify RoHS status. All three parts maintain REACH Unaffected status and EAR99 export classification.

Q: What packaging options are available for substitution?

A: HMHA2801R2 is available in Cut Tape & Digi-Reel format for component-level procurement. HMHA2801R2V is available in Tape & Reel format for higher-volume production runs. Both use the same 4-Mini-Flat package.

Q: Are the isolation voltage and current transfer ratios identical across all three parts?

A: Yes. All three parts maintain 3750Vrms isolation voltage, 80% minimum current transfer ratio at 5mA, and 600% maximum current transfer ratio at 5mA. Operating temperature range, output voltage limits, and output current specifications are identical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message