HMHA2801V Equivalent & Substitute Parts

Part Overview

The HMHA2801V is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications. This component provides 3750Vrms isolation with a single channel transistor output configuration in a 4-Mini-Flat surface mount package. The part is currently in active production status with substantial inventory availability. Identifying equivalent and substitute parts is essential for supply chain continuity, design flexibility, and procurement optimization in applications requiring galvanic isolation with these specific electrical characteristics.

Substiute Parts

HMHA2801V

onsemiIn Stock: 21300HMHA2801V Datasheet

Current PartRFQ

HMHA2801

onsemiIn Stock: 41479HMHA2801 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HMHA2801V is determined by strict parametric equivalence across the following critical dimensions:

Isolation Voltage: 3750Vrms isolation rating is the primary functional requirement. Substitute parts must maintain this exact isolation specification.

Channel Configuration: Single-channel transistor output architecture must be preserved. The output stage topology directly impacts circuit integration and signal path design.

Current Transfer Ratio Range: The 80% to 600% CTR range @ 5mA defines the optical coupling efficiency. Substitute parts must operate within this specified window to ensure consistent gain characteristics.

Output Characteristics: Maximum output voltage of 80V and maximum output current of 50mA per channel establish the load-driving capability. Vce saturation at 300mV maximum defines the on-state voltage drop.

Switching Performance: Rise and fall times of 3µs each specify the temporal response characteristics critical for timing-sensitive applications.

Package and Mounting: 4-SOIC (4-Mini-Flat) surface mount package with 0.173" width (4.40mm) ensures mechanical and electrical compatibility with existing PCB layouts.

Compliance and Environmental: ROHS3 compliance, MSL Level 1, and operating temperature range of -55°C to 100°C must be maintained.

The HMHA2801 (without the "V" suffix variant designation) qualifies as a parametric equivalent based on identical electrical specifications and package configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the HMHA2801V and HMHA2801 maintain active production status with onsemi, ensuring long-term availability and supply chain stability. Both parts carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements for industrial and commercial applications.

The HMHA2801 demonstrates higher inventory levels (41,400 pcs) compared to the HMHA2801V (21,200 pcs), providing improved procurement flexibility and reduced lead times for high-volume applications. Both parts are supplied in tube packaging with MSL Level 1 rating, indicating no moisture sensitivity constraints during storage and handling.

Selection between these parts should be based on availability requirements, procurement timelines, and existing design documentation references. From an electrical and mechanical standpoint, both parts are functionally interchangeable within applications designed for the HMHA2801V specification set.

Frequently Asked Questions (FAQ)

Q: Can the HMHA2801 directly replace the HMHA2801V in existing designs?

A: Yes. Both parts are manufactured by onsemi with identical electrical specifications, including 3750Vrms isolation voltage, single-channel transistor output, 80-600% current transfer ratio range, and 4-SOIC package configuration. No circuit modifications are required.

Q: What determines whether a part qualifies as a substitute for the HMHA2801V?

A: Substitution eligibility requires matching across all critical parameters: isolation voltage (3750Vrms), channel count (1), current transfer ratio range (80-600% @ 5mA), output voltage and current ratings (80V max, 50mA max), switching times (3µs rise/fall), package type (4-SOIC), and compliance certifications (ROHS3, MSL Level 1).

Q: Are there differences in the part number designations between HMHA2801V and HMHA2801?

A: The "V" suffix in HMHA2801V represents a variant designation. Both parts share the same base product number (HMHA28) and core electrical specifications. The variant designation does not indicate functional differences in the parameters provided.

Q: What is the significance of the 4-SOIC package specification?

A: The 4-SOIC (Small Outline Integrated Circuit) package with 0.173" width (4.40mm) defines the physical footprint and pin configuration. This package type is essential for surface mount PCB assembly compatibility. Substitute parts must use identical package geometry to ensure mechanical fit and electrical connectivity without PCB redesign.

Q: How do the current transfer ratio specifications affect component selection?

A: The current transfer ratio (CTR) range of 80-600% @ 5mA defines the optical coupling efficiency between the LED input stage and transistor output stage. This range ensures predictable gain characteristics across the specified input current. Applications requiring specific CTR values within this range can use either part interchangeably.

Q: What does MSL Level 1 mean for handling and storage?

A: MSL (Moisture Sensitivity Level) Level 1 indicates unlimited shelf life with no moisture sensitivity constraints. These parts do not require special dry-pack storage, desiccant handling, or bake-out procedures prior to soldering, simplifying procurement and assembly logistics.