FOD070L Optoisolator Equivalent & Substitute Parts

Part Overview

The FOD070L is an optoisolator manufactured by onsemi, featuring Darlington output with base connection and 2500Vrms isolation voltage in an 8-SOIC surface mount package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The FOD070L provides 1 channel of galvanic isolation with DC input and Darlington output configuration suitable for logic-level switching applications.

Substiute Parts

FOD070L

onsemiIn Stock: 951FOD070L Datasheet

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HCPL-070L

Broadcom LimitedIn Stock: 1775HCPL-070L Datasheet

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HCPL-070L-000E

Broadcom LimitedIn Stock: 4909HCPL-070L-000E Datasheet

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HCPL-070L-500E

Broadcom LimitedIn Stock: 2358HCPL-070L-500E Datasheet

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SFH6319T

Vishay Semiconductor Opto DivisionIn Stock: 1965SFH6319T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FOD070L is determined by the following critical parameters:

• Package compatibility: 8-SOIC form factor with 0.154" (3.90mm) width
• Isolation voltage: Minimum 2500Vrms (higher ratings acceptable)
• Output configuration: Darlington or Darlington with base output
• Number of channels: Single channel (1 channel)
• Output current capability: Minimum 60mA per channel
• Maximum output voltage: Minimum 7V
• Input type: DC input
• Mounting type: Surface mount

All substitute parts listed meet or exceed these parameters. The HCPL-070L variants and SFH6319T provide higher isolation voltage ratings (3750Vrms to 4000Vrms), enhanced current transfer ratios, and active product status, making them suitable replacements for FOD070L applications.

Parameter Comparison

Engineering Selection Recommendations

HCPL-070L-000E and HCPL-070L-500E (Broadcom Limited)

These variants are recommended as primary substitutes for new designs. Both parts maintain identical electrical specifications with higher isolation voltage (3750Vrms vs. 2500Vrms) and are ROHS3 compliant. HCPL-070L-000E and HCPL-070L-500E differ only in packaging and supplier designation. Both are active products with substantial inventory availability (4807 and 2334 units respectively). Operating temperature range is 0°C ~ 70°C, which is narrower than the FOD070L but suitable for most industrial applications.

SFH6319T (Vishay Semiconductor Opto Division)

This substitute offers the highest isolation voltage (4000Vrms) and fastest switching performance (600ns turn-on, 1.5µs turn-off). The SFH6319T provides transistor output with base connection and higher maximum output voltage (18V vs. 7V), enabling broader application flexibility. ROHS3 compliance and extended operating temperature range (-55°C ~ 100°C) support demanding environments. This part is suitable for applications requiring superior switching speed and wider temperature operation.

HCPL-070L (Broadcom Limited)

This variant is functionally equivalent to HCPL-070L-000E and HCPL-070L-500E but carries RoHS non-compliant status. Selection of this part is appropriate only when RoHS compliance is not a design requirement. Inventory availability is 1700 units.

Frequently Asked Questions (FAQ)

Q: Can HCPL-070L variants directly replace FOD070L in existing designs?

A: Yes. All HCPL-070L variants maintain the same 8-SOIC package footprint, pin configuration, and electrical output characteristics (60mA output current, 7V maximum output voltage). The higher isolation voltage (3750Vrms) provides additional safety margin. Operating temperature range differs (0°C ~ 70°C vs. -40°C ~ 85°C), so applications requiring extended temperature operation should be evaluated.

Q: What is the difference between HCPL-070L, HCPL-070L-000E, and HCPL-070L-500E?

A: Electrical specifications are identical across all three variants. HCPL-070L-000E and HCPL-070L-500E are ROHS3 compliant, while HCPL-070L is RoHS non-compliant. The designations reflect different supplier packaging and compliance certifications. For new designs, HCPL-070L-000E or HCPL-070L-500E are preferred.

Q: Is SFH6319T a suitable replacement for FOD070L?

A: Yes, with design considerations. SFH6319T provides higher isolation voltage (4000Vrms), faster switching (600ns vs. 3µs turn-on), and higher maximum output voltage (18V vs. 7V). The transistor output with base configuration is compatible with FOD070L applications. Extended operating temperature range (-55°C ~ 100°C) supports wider environmental conditions. Verify that the higher output voltage does not affect downstream circuit design.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging, ensuring PCB footprint compatibility with FOD070L designs.

Q: What compliance certifications should I consider for new designs?

A: HCPL-070L-000E, HCPL-070L-500E, and SFH6319T are ROHS3 compliant, meeting current environmental regulations. All parts are REACH unaffected and carry EAR99 ECCN classification. For applications requiring RoHS compliance, avoid HCPL-070L (non-compliant).

Q: How do current transfer ratios compare between FOD070L and substitutes?

A: FOD070L specifies 400% minimum and 7000% maximum at 500µA input current. Substitute parts specify lower ratios (300% minimum, 2600% maximum) but at different input current (1.6mA). These specifications reflect different measurement conditions and do not indicate reduced performance. All parts meet the 60mA output current requirement at specified input levels.