TSMBJ0522C Equivalent & Substitute Parts

Part Overview

The TSMBJ0522C is a 275V off-state, 250A peak pulse (8/20µs) transient voltage suppressor thyristor manufactured by Micro Commercial Co in DO-214AA (SMB) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling capacity, and mechanical packaging to ensure direct replacement capability.

Substiute Parts

TSMBJ0522C

Micro Commercial CoIn Stock: 866TSMBJ0522C Datasheet

Current PartRFQ

P3100SALRP

Littelfuse Inc.In Stock: 35476P3100SALRP Datasheet

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P3100SBLRP

Littelfuse Inc.In Stock: 119152P3100SBLRP Datasheet

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P3100SCLRP

Littelfuse Inc.In Stock: 64451P3100SCLRP Datasheet

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P3100SCMCLRP

Littelfuse Inc.In Stock: 8257P3100SCMCLRP Datasheet

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P3100SDLRP

Littelfuse Inc.In Stock: 4661P3100SDLRP Datasheet

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P6002SALRP

Littelfuse Inc.In Stock: 1956P6002SALRP Datasheet

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SMP80MC-270

STMicroelectronicsIn Stock: 1460SMP80MC-270 Datasheet

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TISP4350T3BJR-S

Bourns Inc.In Stock: 6161TISP4350T3BJR-S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage - Off State: Must equal 275V
• Voltage - Breakover: Must equal 350V
• Package / Case: Must be DO-214AA, SMB
• Mounting Type: Must be Surface Mount
• Number of Elements: Must equal 1

Current ratings (peak pulse 8/20µs, peak pulse 10/1000µs, and hold current) define performance tiers within the same voltage class. Parts are grouped by current capacity: 150A, 250A, 400A, and 1kA categories. The TSMBJ0522C operates at the 250A tier.

Parts that deviate from the core voltage and package specifications are listed but represent different electrical classes and require circuit re-evaluation.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Same Electrical Class - 275V, 350V Breakover, 250A Peak Pulse)

P3100SBLRP and TISP4350T3BJR-S are direct functional equivalents to TSMBJ0522C. Both maintain identical voltage ratings and 250A peak pulse current capacity in the same DO-214AA package. Both parts are active products with ROHS3 compliance, addressing the obsolescence and compliance limitations of the original part. P3100SBLRP offers higher inventory availability (119,050 pcs) compared to TISP4350T3BJR-S (6,062 pcs).

Lower Current Alternative (275V, 350V Breakover, 150A Peak Pulse)

P3100SALRP operates at the same voltage class but with reduced peak pulse current (150A vs. 250A). This part is suitable only for applications where the 250A requirement can be relaxed. Active product status and ROHS3 compliance are maintained.

Higher Current Alternatives (275V, 350V Breakover, 400A and 1kA Peak Pulse)

P3100SCLRP, P3100SCMCLRP, and P3100SDLRP provide increased current handling at the same voltage class. These parts are suitable for designs requiring higher transient suppression capacity. All are active products with ROHS3 compliance. P3100SDLRP reaches 1kA peak pulse capacity with reduced hold current (50mA vs. 150mA).

Voltage Variant (270V Off-State)

SMP80MC-270 by STMicroelectronics operates at 270V off-state with 345V breakover, representing a near-equivalent voltage class. Peak pulse current is 200A. This part requires circuit verification due to the 5V voltage deviation and should be considered only when 270V operation is acceptable.

Different Voltage Class (550V Off-State)

P6002SALRP operates at 550V off-state with 700V breakover, representing a different electrical class. This part is not a substitute for 275V applications and requires complete circuit re-evaluation.

Frequently Asked Questions (FAQ)

Q: Can P3100SBLRP directly replace TSMBJ0522C?

A: Yes. P3100SBLRP maintains identical voltage ratings (275V off-state, 350V breakover) and peak pulse current (250A at 8/20µs). Both use DO-214AA SMB packaging. The part is active and ROHS3 compliant, addressing obsolescence and compliance concerns.

Q: What is the difference between the 250A and 400A variants?

A: Current rating determines transient suppression capacity. The 250A variant (TSMBJ0522C, P3100SBLRP, TISP4350T3BJR-S) handles peak pulses up to 250A at 8/20µs. The 400A variants (P3100SCLRP, P3100SCMCLRP) handle up to 400A. Selection depends on the maximum transient current expected in the protected circuit.

Q: Are all substitute parts in the same package?

A: Yes. All listed substitutes use DO-214AA (SMB) surface mount packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Why is TSMBJ0522C marked obsolete?

A: Obsolescence indicates the part is no longer manufactured by Micro Commercial Co. Active alternatives from Littelfuse, Bourns, and STMicroelectronics provide equivalent or superior functionality with current production support and compliance certifications.

Q: Can I use P3100SALRP (150A) instead of TSMBJ0522C (250A)?

A: Only if circuit analysis confirms that transient currents do not exceed 150A. Using a lower-rated part in a circuit designed for 250A may result in inadequate suppression or device failure.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. TSMBJ0522C is RoHS non-compliant; all active substitutes listed are ROHS3 compliant.

Q: Is SMP80MC-270 a suitable replacement?

A: SMP80MC-270 operates at 270V off-state versus the required 275V, representing a 5V deviation. While mechanically compatible, this voltage difference requires circuit verification to confirm acceptable performance margins in the target application.