Equivalent & Substitute Parts for P4SMA190A BK

Part Overview

The P4SMA190A BK is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Central Semiconductor Corp, designed for general-purpose overvoltage protection applications. This component features a 190V reverse standoff voltage with a maximum clamping voltage of 308V at peak pulse current. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

P4SMA190A BK

Central Semiconductor CorpIn Stock: 1131P4SMA190A BK Datasheet

Current PartRFQ

TV04A191J-G

Comchip TechnologyIn Stock: 1105TV04A191J-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4SMA190A BK is determined by matching the following critical electrical and mechanical parameters:

• Reverse standoff voltage: 190V (nominal)
• Peak pulse current rating: 1.3A
• Clamping voltage performance: maximum 308V at Ipp
• Package compatibility: DO-214AC (SMA) surface mount
• Unidirectional topology: single channel
• Operating temperature range: -55°C to 150°C
• Moisture sensitivity: MSL 1 (Unlimited)

The TV04A191J-G from Comchip Technology meets all specified substitution criteria, maintaining electrical equivalence across voltage ratings, current handling, and thermal performance while providing active product status and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TV04A191J-G is the direct equivalent substitute for the P4SMA190A BK. Both components share identical electrical specifications for reverse standoff voltage, peak pulse current, and power dissipation. The clamping voltage performance is equivalent within engineering tolerance (307.8V versus 308V). Both devices maintain the same operating temperature range and moisture sensitivity classification.

The TV04A191J-G offers the advantage of active product status, ensuring long-term availability and supply chain continuity. The component carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The identical DO-214AC (SMA) package ensures direct mechanical and electrical compatibility without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the TV04A191J-G be used as a direct replacement for the P4SMA190A BK without circuit modifications?

A: Yes. Both components are electrically and mechanically equivalent. The TV04A191J-G maintains identical reverse standoff voltage (190V), peak pulse current (1.3A), and clamping voltage performance (307.8V versus 308V). The DO-214AC (SMA) package is identical, requiring no PCB layout changes.

Q: What is the significance of the P4SMA190A BK being classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Central Semiconductor Corp. The TV04A191J-G, with active product status, ensures continued availability and supply chain reliability for new designs and production runs.

Q: Are there compliance differences between the two parts?

A: The TV04A191J-G carries ROHS3 compliance and REACH unaffected certification. The P4SMA190A BK compliance status is not specified in available documentation. For applications requiring regulatory compliance documentation, the TV04A191J-G is the appropriate selection.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the P4SMA190A BK and TV04A191J-G are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

Q: Is the packaging format identical between the two parts?

A: Yes. Both components use the DO-214AC (SMA) surface mount package. The TV04A191J-G is supplied in Tape & Reel (TR) format, which is standard for production quantities and does not affect component performance or compatibility.