OPIA802DTU Equivalent & Substitute Parts

Part Overview

The OPIA802DTU is an optoisolator transistor with base output manufactured by TT Electronics / Optek Technology, rated for 2500Vrms isolation voltage in an 8-DIP through-hole package. This component provides galvanic isolation for single-channel DC input applications with transistor output capability. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

OPIA802DTU

TT Electronics / Optek TechnologyIn Stock: 1081OPIA802DTU Datasheet

Current PartRFQ

6N136

onsemiIn Stock: 501706N136 Datasheet

MFR RecommendedRFQ

6N136-020E

Broadcom LimitedIn Stock: 15836N136-020E Datasheet

MFR RecommendedRFQ

HCPL-2502-020E

Broadcom LimitedIn Stock: 1159HCPL-2502-020E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OPIA802DTU is determined by the following critical parameters:

• Isolation Voltage: Minimum 2500Vrms (higher ratings acceptable)
• Package / Case: 8-DIP (0.300", 7.62mm) form factor
• Output Type: Transistor with Base configuration
• Number of Channels: Single channel
• Input Type: DC
• Mounting Type: Through Hole
• Current Transfer Ratio (Min): 19% @ 16mA or higher
• Output Current Capability: 8mA minimum per channel
• DC Forward Current (Max): 25mA maximum

Three substitute parts meet these criteria with varying performance enhancements and product status classifications.

Parameter Comparison

Engineering Selection Recommendations

6N136 (onsemi): Direct functional equivalent with identical isolation voltage (2500Vrms) and current transfer ratio minimum (19% @ 16mA). Maintains the same 8-DIP package and through-hole mounting. Product status is obsolete, similar to the OPIA802DTU. This substitute provides the closest electrical match with no performance enhancement or degradation in critical parameters.

6N136-020E (Broadcom Limited): Enhanced substitute with doubled isolation voltage (5000Vrms) while maintaining all critical electrical parameters. Faster turn-on time (200ns vs. 300ns) and higher maximum output voltage (20V vs. 15V). Product status is active, ensuring long-term availability and supply chain support. ROHS3 compliant. Suitable for applications requiring higher isolation margins or extended product lifecycle support.

HCPL-2502-020E (Broadcom Limited): Alternative substitute with 5000Vrms isolation voltage and active product status. Current transfer ratio minimum is lower (15% @ 16mA vs. 19%), and maximum is narrower (22% @ 16mA). Identical turn-on/turn-off timing and output voltage specifications to 6N136-020E. ROHS3 compliant. Appropriate for applications where the lower current transfer ratio range is acceptable and alternative sourcing is required.

For new designs and production requiring long-term component availability, 6N136-020E is the preferred substitute due to active product status, enhanced isolation voltage, and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the OPIA802DTU be directly replaced with 6N136?

A: Yes. The 6N136 is a direct functional equivalent with identical isolation voltage (2500Vrms), current transfer ratio (19% @ 16mA minimum), output type (transistor with base), and 8-DIP package. Both parts are obsolete, so this substitution maintains equivalent lifecycle status.

Q: What is the advantage of using 6N136-020E over the original OPIA802DTU?

A: The 6N136-020E provides doubled isolation voltage (5000Vrms vs. 2500Vrms), faster turn-on response (200ns vs. 300ns), and active product status ensuring ongoing availability. All critical electrical parameters remain compatible or improved. ROHS3 compliance is an additional benefit for regulated applications.

Q: Are all three substitutes pin-compatible with the OPIA802DTU?

A: All three substitutes use the same 8-DIP (0.300", 7.62mm) package and through-hole mounting configuration. Pin compatibility is determined by the transistor-with-base output topology, which all four parts share. Direct PCB replacement is possible without layout modification.

Q: What is the difference between 6N136-020E and HCPL-2502-020E?

A: Both parts offer 5000Vrms isolation and active product status. The 6N136-020E has a higher current transfer ratio minimum (19% vs. 15%) and maximum (50% vs. 22%), providing better performance consistency. The HCPL-2502-020E is an alternative from the same manufacturer (Broadcom) with narrower specifications. Selection depends on application current transfer ratio requirements and sourcing availability.

Q: Does the operating temperature range difference affect substitution?

A: The OPIA802DTU operates to 115°C maximum, while all substitutes operate to 100°C maximum. For applications requiring operation above 100°C, the OPIA802DTU cannot be substituted. For applications within the -55°C to 100°C range, all substitutes are compatible.

Q: Are these substitutes suitable for high-isolation applications?

A: The 6N136-020E and HCPL-2502-020E both provide 5000Vrms isolation, double the original OPIA802DTU specification. These are suitable for applications requiring enhanced isolation margins. The 6N136 maintains the original 2500Vrms rating for applications with that specific requirement.