HMHA2801R2 Equivalent & Substitute Parts

Part Overview

The HMHA2801R2 is an optoisolator with transistor output, providing 3750Vrms isolation voltage in a 4-Mini-Flat surface mount package. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Identifying equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this isolation specification and package form factor are required.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	600% @ 5mA
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	300mV
Rise / Fall Time	3µs, 3µs
Operating Temperature Range	-55°C ~ 100°C
Package / Case	4-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the HMHA2801R2 is determined by strict equivalence across the following critical parameters:

Isolation voltage: 3750Vrms
Output configuration: Single-channel transistor output
Current transfer ratio range: 80% to 600% @ 5mA
Maximum output voltage: 80V
Maximum output current: 50mA
Package form factor: 4-SOIC (4-Mini-Flat)
Surface mount compatibility
Operating temperature range: -55°C to 100°C

The HMHA2801R2V meets all these criteria as a parametric equivalent. The primary distinction between these parts is packaging format: the main part uses Cut Tape (CT) & Digi-Reel® packaging, while the substitute uses Tape & Reel (TR) packaging. Both parts share identical electrical specifications and the same 4-Mini-Flat package footprint, making them mechanically and electrically interchangeable at the component level.

Parameter Comparison

Parameter	HMHA2801R2	HMHA2801R2V	Match
Manufacturer	onsemi	onsemi	Yes
Category	Optoisolators	Optoisolators	Yes
Number of Channels	1	1	Yes
Voltage - Isolation	3750Vrms	3750Vrms	Yes
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	Yes
Current Transfer Ratio (Max)	600% @ 5mA	600% @ 5mA	Yes
Rise / Fall Time (Typ)	3µs, 3µs	3µs, 3µs	Yes
Input Type	DC	DC	Yes
Output Type	Transistor	Transistor	Yes
Voltage - Output (Max)	80V	80V	Yes
Current - Output / Channel	50mA	50mA	Yes
Voltage - Forward (Vf) (Typ)	1.3V (Max)	1.3V (Max)	Yes
Current - DC Forward (If) (Max)	50 mA	50 mA	Yes
Vce Saturation (Max)	300mV	300mV	Yes
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	Yes
Supplier Device Package	4-Mini-Flat	4-Mini-Flat	Yes
Base Product Number	HMHA2801	HMHA2801	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
REACH Status	REACH Unaffected	REACH Unaffected	Yes
ECCN	EAR99	EAR99	Yes
HTSUS	8541.49.8000	8541.49.8000	Yes
Product Status	Not For New Designs	Active	Different
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Different

Engineering Selection Recommendations

The HMHA2801R2V is the direct parametric equivalent for the HMHA2801R2. All electrical characteristics, thermal specifications, isolation ratings, and mechanical dimensions are identical. The substitute part carries Active product status, whereas the main part is designated Not For New Designs, making the HMHA2801R2V the appropriate selection for ongoing production and new applications requiring this optoisolator specification.

Both parts maintain ROHS3 compliance, REACH unaffected status, and identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.49.8000). The only functional difference is packaging format: Cut Tape & Digi-Reel® versus Tape & Reel. This distinction affects supply chain logistics and bulk handling but does not impact component performance or PCB assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can HMHA2801R2V be used as a direct replacement for HMHA2801R2?

A: Yes. Both parts are electrically and mechanically identical. They share the same 4-Mini-Flat package footprint, isolation voltage (3750Vrms), current transfer ratio specifications, output voltage and current ratings, and operating temperature range. PCB layout and circuit design require no modification.

Q: What is the difference between Cut Tape & Digi-Reel® and Tape & Reel packaging?

A: Both are surface mount tape formats suitable for automated pick-and-place assembly. Cut Tape & Digi-Reel® is typically used for smaller order quantities and manual handling, while Tape & Reel is standard for high-volume production runs. The component itself and its performance characteristics are unchanged.

Q: Why is HMHA2801R2 marked as Not For New Designs?

A: This designation indicates the manufacturer has transitioned this part to end-of-life status. The HMHA2801R2V (Active status) is the recommended alternative for new designs and ongoing production support.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory classifications. Moisture sensitivity level (MSL 1 - Unlimited) is the same for both.

Q: What are the critical parameters for substitution in this optoisolator category?

A: Isolation voltage (3750Vrms), number of channels (1), output type (transistor), current transfer ratio range (80% to 600% @ 5mA), maximum output voltage (80V), maximum output current (50mA), and package form factor (4-SOIC / 4-Mini-Flat) must all match for direct substitution.

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