TLP191B(MBSTPL,C,F) Equivalent & Substitute Parts

Part Overview

The TLP191B(MBSTPL,C,F) is an optoisolator with photovoltaic output manufactured by Toshiba Semiconductor and Storage. This component provides galvanic isolation rated at 2500Vrms with a 6-MFSOP, 4-lead surface mount package. The device is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

TLP191B(MBSTPL,C,F

Toshiba Semiconductor and StorageIn Stock: 966TLP191B(MBSTPL,C,F Datasheet

Current PartRFQ

TLP3906(TPL,E

Toshiba Semiconductor and StorageIn Stock: 27211TLP3906(TPL,E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TLP191B(MBSTPL,C,F) is determined by the following electrical and mechanical parameters:

Isolation Voltage Compatibility: The substitute part must maintain isolation voltage at or above 2500Vrms. The TLP3906(TPL,E) provides 3750Vrms isolation, exceeding the original specification.

Output Characteristics: Both parts feature photovoltaic output type with DC input. The substitute maintains compatible output voltage and current parameters within acceptable operating ranges.

Thermal Operating Range: The substitute extends the upper operating temperature limit from 85°C to 125°C, providing enhanced thermal performance.

Package and Mounting: Both components utilize surface mount technology with 6-lead configurations, enabling direct board-level substitution.

Product Status: The substitute part is classified as active with full manufacturing support and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TLP3906(TPL,E) is the manufacturer-recommended substitute for the obsolete TLP191B(MBSTPL,C,F). Selection of this substitute is supported by the following factors:

Product Availability: The TLP3906(TPL,E) maintains active production status with 27,200 units in stock, ensuring supply chain continuity for new designs and production requirements.

Regulatory Compliance: The substitute part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. Both parts share identical ECCN and HTSUS classifications.

Isolation Performance: The substitute provides enhanced isolation voltage (3750Vrms versus 2500Vrms), delivering superior electrical isolation margins for safety-critical applications.

Thermal Capability: Extended operating temperature range (-40°C to 125°C) accommodates applications requiring higher ambient or component temperatures compared to the original part's 85°C maximum.

Functional Equivalence: Both components maintain photovoltaic output topology with DC input, DC input switching characteristics, and surface mount implementation, enabling direct functional replacement in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the TLP3906(TPL,E) directly replace the TLP191B(MBSTPL,C,F) in existing designs?

A: The TLP3906(TPL,E) provides functional equivalence as the manufacturer-recommended substitute. Both components feature photovoltaic output, DC input, and surface mount packaging. Physical package differences (6-MFSOP gull wing versus 6-SOIC) require PCB layout verification for pin-to-pin compatibility.

Q: What are the key electrical differences between these parts?

A: The substitute provides higher isolation voltage (3750Vrms versus 2500Vrms), extended operating temperature range (125°C versus 85°C maximum), and faster turn-off time (300µs versus 3ms). Output voltage is slightly lower (7V versus 8V maximum), and output current is reduced (12µA versus 24µA).

Q: Are there compliance or certification differences?

A: Both parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. The substitute is ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and REACH unaffected status, meeting current regulatory requirements.

Q: What package considerations apply to substitution?

A: The original part uses 6-MFSOP with gull wing leads, while the substitute uses 6-SOIC with 0.173" width (4.40mm). Both are 4-lead surface mount packages. PCB footprint redesign is required for physical implementation.

Q: Is the substitute suitable for high-temperature applications?

A: The TLP3906(TPL,E) operates to 125°C maximum, compared to 85°C for the original part, providing 40°C additional thermal margin for elevated ambient or component temperature environments.

Q: What is the inventory status for the substitute part?

A: The TLP3906(TPL,E) has 27,200 units in stock as new original inventory, ensuring availability for production and design implementation.