FODM3012 Optoisolator Equivalent & Substitute Parts

Part Overview

The FODM3012 is a 3.75kV isolation optoisolator with triac output, designed for single-channel applications requiring high-voltage isolation in surface mount packaging. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement planning. The FODM3012 operates across a temperature range of -40°C to 100°C and is approved by BSI, CSA, and UL standards bodies.

Substiute Parts

FODM3012

onsemiIn Stock: 12921FODM3012 Datasheet

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FODM3053R2V-NF098

onsemiIn Stock: 2137FODM3053R2V-NF098 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FODM3012 is determined by the following critical parameters:

• Voltage - Isolation: 3750Vrms (must match)
• Output Type: Triac (must match)
• Number of Channels: 1 (must match)
• Current - LED Trigger (Ift) (Max): 5mA (must match)
• Current - On State (It (RMS)) (Max): 70 mA (must match)
• Voltage - Forward (Vf) (Typ): 1.2V (must match)
• Current - DC Forward (If) (Max): 60 mA (must match)
• Operating Temperature: -40°C ~ 100°C (must match)
• Mounting Type: Surface Mount (must match)
• Package / Case: 4-SMD, Gull Wing (must match)

The FODM3053R2V-NF098 meets all core electrical and mechanical requirements for direct substitution. Differences in off-state voltage, static dV/dt rating, and approval certifications do not preclude functional equivalence within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

The FODM3053R2V-NF098 is the designated substitute for the obsolete FODM3012. Both components share identical core electrical specifications and mechanical packaging, ensuring functional compatibility in existing circuit designs.

The FODM3053R2V-NF098 offers the following advantages:

• Active product status with ongoing manufacturer support
• Enhanced off-state voltage rating (600 V vs. 250 V)
• Superior static dV/dt performance (1kV/µs vs. 10V/µs)
• ROHS3 compliance certification
• Approval by cUR, UR, and VDE standards bodies

Selection of the FODM3053R2V-NF098 is appropriate for new designs and legacy system updates where the FODM3012 is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the FODM3053R2V-NF098 directly replace the FODM3012 in existing designs?

A: Yes. Both components share identical isolation voltage (3750Vrms), output type (triac), channel count (1), trigger current (5mA max), on-state current (70 mA max), forward voltage (1.2V), forward current (60 mA max), operating temperature range (-40°C to 100°C), and 4-SMD gull wing packaging. No circuit modifications are required.

Q: What are the differences between these two parts?

A: The FODM3053R2V-NF098 provides higher off-state voltage (600 V vs. 250 V) and faster static dV/dt performance (1kV/µs vs. 10V/µs). It also carries ROHS3 compliance and different approval certifications (cUR, UR, VDE vs. BSI, CSA, UL). The FODM3012 is obsolete; the FODM3053R2V-NF098 is active.

Q: Are there packaging differences?

A: No. Both components use 4-SMD gull wing surface mount packaging. The FODM3053R2V-NF098 is supplied in tape and reel format, which is standard for active production components.

Q: Which certifications apply to each part?

A: The FODM3012 carries BSI, CSA, and UL approvals. The FODM3053R2V-NF098 carries cUR, UR, and VDE approvals. Certification requirements depend on the end application and regional standards.

Q: Is the FODM3053R2V-NF098 suitable for high-speed switching applications?

A: The FODM3053R2V-NF098 supports static dV/dt of 1kV/µs, which exceeds the FODM3012 specification of 10V/µs. This enhanced rating provides better performance in high-speed switching environments.