MID400SD Equivalent & Substitute Parts

Part Overview

The MID400SD is an optoisolator AC line monitor manufactured by onsemi, designed for 2500Vrms isolation applications in single-channel configurations. This component operates across AC and DC input types with a maximum output current of 20mA per channel and is housed in an 8-SMD, Gull Wing surface mount package.

The MID400SD carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this optoisolator.

Substiute Parts

MID400SD

onsemiIn Stock: 1635MID400SD Datasheet

Current PartRFQ

MID400SDM

onsemiIn Stock: 1823MID400SDM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MID400SD is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 2500Vrms
• Type: AC Line Monitor
• Number of Channels: 1
• Input Type: AC, DC
• Current - Output / Channel: 20mA
• Voltage - Supply: 7V
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 8-SMD, Gull Wing
• Mounting Type: Surface Mount

The MID400SDM qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction between these parts is packaging format: MID400SD is supplied in Cut Tape (CT), while MID400SDM is supplied in Tape & Reel (TR). Both parts share the same base product number (MID400) and maintain full parameter alignment across all isolation, input, output, and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

The MID400SDM is the manufacturer-recommended substitute for the MID400SD. Both parts maintain identical electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications.

The MID400SDM carries Active product status, providing superior supply chain availability and long-term support compared to the Obsolete MID400SD. Both parts maintain ROHS3 compliance and carry UR approval agency certification, meeting regulatory requirements for equivalent applications.

The distinction between Cut Tape and Tape & Reel packaging reflects manufacturing and procurement considerations rather than functional differences. Selection between these formats depends on assembly volume and handling requirements rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can MID400SDM replace MID400SD in existing designs?

A: Yes. The MID400SDM is electrically and mechanically equivalent to the MID400SD. All isolation voltage, input/output characteristics, thermal ratings, and package dimensions are identical. Direct substitution is supported without circuit modification.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging supplies individual component strips for lower-volume applications or manual assembly. Tape & Reel packaging supplies components on continuous reels for automated pick-and-place assembly. Both formats contain identical components; packaging format selection depends on assembly process and order volume.

Q: Why is MID400SD marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this part number. The MID400SDM, carrying Active status, represents the current production equivalent and is recommended for new designs and ongoing supply requirements.

Q: Are there compliance differences between MID400SD and MID400SDM?

A: No. Both parts maintain identical ROHS3 compliance, UR approval, MSL rating, and regulatory certifications. Compliance status is equivalent across both part numbers.

Q: What inventory considerations apply to these parts?

A: MID400SD inventory is limited to existing stock (1563 Pcs reported). MID400SDM maintains active production status with current inventory availability (1778 Pcs reported). For new projects or long-term supply planning, MID400SDM is the recommended selection.