HMHA2801AR4V Equivalent & Substitute Parts

Part Overview

The HMHA2801AR4V is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications requiring 3750Vrms isolation rating. This component features a single channel configuration in a 4-Mini-Flat surface mount package. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Maximum Output Voltage	80V
Maximum Output Current	50mA
Vce Saturation (Max)	300mV
Rise / Fall Time	3µs, 3µs
Operating Temperature Range	-55°C to 100°C
Package Type	4-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the HMHA2801AR4V are identified based on electrical and mechanical parameter equivalence within the optoisolator transistor output category. The substitution criteria are:

Identical isolation voltage rating (3750Vrms)
Matching number of channels (1)
Identical output type (Transistor)
Matching current transfer ratio specifications (80% to 160% @ 5mA)
Identical maximum output voltage (80V)
Identical maximum output current per channel (50mA)
Matching Vce saturation specification (300mV max)
Identical rise and fall time characteristics (3µs, 3µs)
Compatible operating temperature range (-55°C to 100°C)
Same package and pinout (4-Mini-Flat / 4-SOIC)

The identified substitutes differ only in product status (active vs. obsolete) and packaging format (Tape & Reel or Cut Tape & Digi-Reel versus the original configuration).

Parameter Comparison

Parameter	HMHA2801AR4V	HMHA2801AR2	HMHA2801AR2V
Manufacturer	onsemi	onsemi	onsemi
Product Status	Obsolete	Active	Active
Isolation Voltage	3750Vrms	3750Vrms	3750Vrms
Number of Channels	1	1	1
Output Type	Transistor	Transistor	Transistor
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA	160% @ 5mA	160% @ 5mA
Maximum Output Voltage	80V	80V	80V
Maximum Output Current	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV
Rise / Fall Time	3µs, 3µs	3µs, 3µs	3µs, 3µs
Operating Temperature	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C
Package / Case	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)	4-SOIC (0.173", 4.40mm Width)
Packaging Format	Bulk	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both HMHA2801AR2 and HMHA2801AR2V are direct electrical and mechanical equivalents to the HMHA2801AR4V. The primary distinction is product status: the substitute parts are active components with current manufacturing support, whereas the original part is obsolete.

HMHA2801AR2 is supplied in Tape & Reel format, suitable for high-volume automated assembly operations. HMHA2801AR2V is supplied in Cut Tape and Digi-Reel format, appropriate for lower-volume applications or mixed component procurement.

Both substitutes carry ROHS3 compliance certification, providing enhanced environmental and regulatory alignment compared to the original part specification. All three components share identical electrical performance characteristics, package geometry, and thermal operating range, ensuring direct functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can HMHA2801AR2 and HMHA2801AR2V be used interchangeably with HMHA2801AR4V?

A: Yes. All three parts are electrically and mechanically identical. The differences are limited to product status (active vs. obsolete) and packaging format (Tape & Reel, Cut Tape & Digi-Reel, or bulk). Pin configuration, electrical performance, and package dimensions are identical across all three variants.

Q: What is the difference between HMHA2801AR2 and HMHA2801AR2V?

A: Both parts are electrically identical. HMHA2801AR2 is supplied in Tape & Reel format for automated assembly. HMHA2801AR2V is supplied in Cut Tape and Digi-Reel format. Selection depends on procurement volume and assembly process requirements.

Q: Why is the original HMHA2801AR4V listed as obsolete?

A: The HMHA2801AR4V has been superseded by active production variants. onsemi continues to manufacture functionally equivalent parts under the HMHA2801AR2 and HMHA2801AR2V designations.

Q: Are there any electrical performance differences between these parts?

A: No. All three parts share identical electrical specifications including isolation voltage, current transfer ratio, output voltage and current ratings, saturation voltage, and switching characteristics.

Q: What packaging considerations apply to these substitutes?

A: All three parts use the same 4-Mini-Flat surface mount package with identical pinout and dimensions. Packaging format differences (Tape & Reel vs. Cut Tape & Digi-Reel) affect only procurement and handling, not circuit performance or PCB assembly compatibility.

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