TSMBJ1022C Equivalent & Substitute Parts

Part Overview

The TSMBJ1022C is a Transient Voltage Suppressor (TVS) thyristor manufactured by Micro Commercial Co, designed for overvoltage protection in surface-mount applications. This component features a 275V off-state voltage rating with 400A peak pulse current capability in a DO-214AA (SMB) package. The product is currently obsolete, making equivalent substitutes necessary for ongoing design support and component procurement.

Substiute Parts

TSMBJ1022C

Micro Commercial CoIn Stock: 829TSMBJ1022C Datasheet

Current PartRFQ

P3100SCMCLRP

Littelfuse Inc.In Stock: 8257P3100SCMCLRP Datasheet

SimilarRFQ

SMP100LC-270

STMicroelectronicsIn Stock: 27501SMP100LC-270 Datasheet

SimilarRFQ

TISP4350T3BJR-S

Bourns Inc.In Stock: 6161TISP4350T3BJR-S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSMBJ1022C is determined by the following critical parameters:

• Voltage Rating Match: Off-state voltage of 275V ±5V and breakover voltage of 350V ±15V
• Current Capability: Peak pulse current (8/20µs) of 400A minimum
• Package Compatibility: DO-214AA (SMB) surface-mount package required
• Electrical Characteristics: Hold current (Ih) of 150mA and single-element configuration

All three substitute parts meet these core electrical and mechanical requirements while maintaining functional equivalence for overvoltage protection applications.

Parameter Comparison

Engineering Selection Recommendations

P3100SCMCLRP (Littelfuse Inc.) provides the closest electrical match to the TSMBJ1022C with identical voltage ratings (350V breakover, 275V off-state) and current specifications (400A peak pulse). This part is ROHS3 compliant and carries active product status with high inventory availability (8242 units). The SIDACtor® series designation indicates mature product qualification.

SMP100LC-270 (STMicroelectronics) offers a viable alternative with slightly reduced off-state voltage (270V vs. 275V) and breakover voltage (335V vs. 350V). Peak pulse current remains at 400A, meeting the primary protection requirement. ROHS3 compliance and extensive inventory (27458 units) support long-term availability. The TRISIL™ series represents an established product line.

TISP4350T3BJR-S (Bourns Inc.) maintains voltage ratings identical to the original part (350V breakover, 275V off-state) but with reduced peak pulse current capability (250A vs. 400A). This substitute is suitable only for applications where the 250A current rating is sufficient. ROHS3 compliance is present, though REACH status is affected. Product status is active with moderate inventory (6062 units).

All three substitutes are ROHS3 compliant, addressing the non-compliance status of the obsolete original part. Selection should prioritize application current requirements and regulatory compliance needs.

Frequently Asked Questions (FAQ)

Q: Can P3100SCMCLRP directly replace TSMBJ1022C without circuit modification?

A: Yes. P3100SCMCLRP matches all critical electrical parameters: 350V breakover voltage, 275V off-state voltage, 400A peak pulse current, and 150mA hold current. The DO-214AA package is identical, enabling direct PCB substitution.

Q: What is the impact of using SMP100LC-270 with its 270V off-state rating instead of 275V?

A: The 5V reduction in off-state voltage represents a 1.8% decrease. The breakover voltage is 335V versus 350V (4.3% reduction). These variations remain within typical component tolerance ranges for TVS thyristor applications. Circuit validation is necessary to confirm adequacy for specific overvoltage protection thresholds.

Q: Is TISP4350T3BJR-S suitable for all TSMBJ1022C applications?

A: TISP4350T3BJR-S maintains voltage ratings but provides 250A peak pulse current versus the original 400A specification. This part is suitable only for applications where the reduced current rating meets protection requirements. Applications requiring full 400A capability must use P3100SCMCLRP or SMP100LC-270.

Q: What are the compliance differences between the original and substitute parts?

A: TSMBJ1022C is RoHS non-compliant. All three substitutes (P3100SCMCLRP, SMP100LC-270, TISP4350T3BJR-S) are ROHS3 compliant. TISP4350T3BJR-S carries REACH affected status, while P3100SCMCLRP and SMP100LC-270 are REACH unaffected.

Q: Do capacitance differences between parts affect circuit performance?

A: Capacitance values range from 45pF (P3100SCMCLRP) to 80pF (TSMBJ1022C). Capacitance affects high-frequency response and transient coupling. Applications sensitive to capacitive loading should evaluate the specific substitute against circuit requirements.

Q: Are all substitutes available in the same packaging format?

A: All substitutes use DO-214AA (SMB) surface-mount packages. P3100SCMCLRP and TISP4350T3BJR-S are supplied in Tape & Reel (TR) format. SMP100LC-270 is available in Cut Tape (CT) and Digi-Reel® format. Packaging format does not affect electrical compatibility.