TSMBJ1012C Equivalent & Substitute Parts

Part Overview

The TSMBJ1012C is a 160V off-state, 400A 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 compatibility across voltage ratings, current handling capacity, and mechanical packaging while meeting modern compliance standards.

Substiute Parts

TSMBJ1012C

Micro Commercial CoIn Stock: 985TSMBJ1012C Datasheet

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SMP100LC-160

STMicroelectronicsIn Stock: 5118SMP100LC-160 Datasheet

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SMP100MC-160

STMicroelectronicsIn Stock: 4008SMP100MC-160 Datasheet

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TB1800H-13-F

Diodes IncorporatedIn Stock: 3235TB1800H-13-F Datasheet

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TB1800M-13-F

Diodes IncorporatedIn Stock: 4501TB1800M-13-F Datasheet

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TISP4220H3BJR-S

Bourns Inc.In Stock: 29369TISP4220H3BJR-S Datasheet

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TISP4220M3BJR-S

Bourns Inc.In Stock: 15279TISP4220M3BJR-S Datasheet

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TISP4A270H3BJR-S

Bourns Inc.In Stock: 873TISP4A270H3BJR-S Datasheet

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TISP5190H3BJR-S

Bourns Inc.In Stock: 1229TISP5190H3BJR-S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the TSMBJ1012C is determined by the following critical parameters:

• Voltage - Off State: Must be 160V (primary protection threshold)
• Package / Case: Must be DO-214AA, SMB (mechanical and thermal compatibility)
• Mounting Type: Must be Surface Mount
• Number of Elements: Must be 1

Secondary parameters that influence substitution suitability include voltage breakover rating, peak pulse current capacity (8/20µs and 10/1000µs), hold current, and capacitance. Substitute parts are grouped based on their ability to meet the primary criteria while maintaining electrical performance within acceptable ranges for the application.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Highest Compatibility)

TB1800H-13-F (Diodes Incorporated) provides the closest electrical match to TSMBJ1012C with identical 160V off-state, 220V breakover, 400A peak pulse (8/20µs), and 120pF capacitance. This part is active, ROHS3 compliant, and available in Tape & Reel packaging. On-state voltage is 4.6V versus 5V on the original part.

SMP100LC-160 (STMicroelectronics) matches the 400A peak pulse current and 160V off-state specifications. Breakover voltage is 200V (lower than original 220V). This part is active and ROHS3 compliant with Cut Tape and Digi-Reel packaging options.

Reduced Current Alternatives

SMP100MC-160 (STMicroelectronics) provides 300A peak pulse (8/20µs) instead of 400A, with matching 160V off-state and 100A peak pulse (10/1000µs). This part is suitable for applications where peak current requirements are lower than the original specification.

TISP4220H3BJR-S (Bourns Inc.) delivers 300A peak pulse (8/20µs) with matching 160V off-state and 100A peak pulse (10/1000µs). Breakover voltage matches at 220V. This part is active and ROHS3 compliant.

TISP5190H3BJR-S (Bourns Inc.) provides 300A peak pulse (8/20µs) with 190V breakover voltage (lower than original). Capacitance is 170pF (higher than original 120pF). This part is active and ROHS3 compliant.

Lower Current Alternatives

TB1800M-13-F (Diodes Incorporated) provides 250A peak pulse (8/20µs) and 50A peak pulse (10/1000µs), suitable for reduced current applications. Off-state voltage remains 160V. This part is active and ROHS3 compliant.

TISP4220M3BJR-S (Bourns Inc.) delivers 220A peak pulse (8/20µs) and 50A peak pulse (10/1000µs). Hold current is 350mA (higher than original 150mA). This part is active and ROHS3 compliant.

Limited Compatibility

TISP4A270H3BJR-S (Bourns Inc.) has 270V breakover voltage (significantly higher than original 220V) and 600mA hold current (significantly higher than original 150mA). Peak pulse (8/20µs) is not specified. This part is suitable only for applications with different voltage protection requirements.

All substitute parts maintain DO-214AA (SMB) surface mount packaging and single-element configuration. All active substitutes are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete TSMBJ1012C.

Frequently Asked Questions (FAQ)

Q: Can I use SMP100MC-160 as a direct replacement for TSMBJ1012C?

A: SMP100MC-160 is mechanically compatible (DO-214AA, SMB package) and maintains the 160V off-state voltage. However, peak pulse current is reduced from 400A to 300A. Use this part only if your application can tolerate lower peak current handling.

Q: What is the difference between TB1800H-13-F and TISP4220H3BJR-S?

A: TB1800H-13-F matches the original 400A peak pulse (8/20µs) and 120pF capacitance, while TISP4220H3BJR-S provides 300A peak pulse and 74pF capacitance. Both maintain 160V off-state and 220V breakover voltage. TB1800H-13-F is the closer electrical match.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are ROHS3 compliant. The original TSMBJ1012C is RoHS non-compliant. Compliance status is an important consideration for new designs and regulated applications.

Q: Does capacitance variation affect substitution suitability?

A: Capacitance differences (ranging from 50pF to 170pF across substitutes) may affect circuit performance in applications sensitive to parasitic capacitance. Verify capacitance requirements in your specific application before selection.

Q: Can I use TISP4A270H3BJR-S as a substitute?

A: TISP4A270H3BJR-S has a significantly higher breakover voltage (270V versus 220V) and higher hold current (600mA versus 150mA). This part is suitable only if your application requires different voltage protection characteristics.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) packaging. All maintain the DO-214AA (SMB) surface mount form factor for PCB compatibility.

Q: Which substitute offers the best overall compatibility?

A: TB1800H-13-F provides the closest electrical match with identical peak pulse current (400A), breakover voltage (220V), and capacitance (120pF). It is active, ROHS3 compliant, and available in standard Tape & Reel packaging.