TSMBJ0309C-130 Equivalent & Substitute Parts

Part Overview

The TSMBJ0309C-130 is a 120V off-state, 150A 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 direct replacement necessary for new designs and ongoing production requirements. The component provides transient voltage suppression with a 160V breakover voltage and 5V on-state voltage characteristic.

Substiute Parts

TSMBJ0309C-130

Micro Commercial CoIn Stock: 1136TSMBJ0309C-130 Datasheet

Current PartRFQ

SMTPA120

STMicroelectronicsIn Stock: 10386SMTPA120 Datasheet

DirectRFQ

TB1300M-13-F

Diodes IncorporatedIn Stock: 4287TB1300M-13-F Datasheet

DirectRFQ

P1300SALRP

Littelfuse Inc.In Stock: 2963P1300SALRP Datasheet

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P1300SBLRP

LittelfuseIn Stock: 2638P1300SBLRP Datasheet

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P1300SCLRP

Littelfuse Inc.In Stock: 17137P1300SCLRP Datasheet

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P1300SCMCLRP

Littelfuse Inc.In Stock: 1705P1300SCMCLRP Datasheet

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P1300SDLRP

Littelfuse Inc.In Stock: 728P1300SDLRP Datasheet

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P1301SCLRP

Littelfuse Inc.In Stock: 1701P1301SCLRP Datasheet

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P1302SALRP

LittelfuseIn Stock: 987P1302SALRP Datasheet

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P1302SBLRP

Littelfuse Inc.In Stock: 800P1302SBLRP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage - Off State: 120V (exact match required)
• Voltage - Breakover: 160V (exact match required)
• Current - Peak Pulse (8/20µs): minimum 150A
• Package / Case: DO-214AA, SMB (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Number of Elements: 1 (single element configuration)

Substitute parts are grouped into two categories:

Direct Equivalents: Parts matching all critical parameters including on-state voltage and capacitance specifications within acceptable tolerance.

Functional Equivalents: Parts meeting voltage and current requirements with variations in secondary parameters (on-state voltage, capacitance, hold current) that do not affect primary suppression function in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent: SMTPA120 (STMicroelectronics) provides the closest functional match with identical voltage ratings (120V off-state, 160V breakover), matching peak pulse current (150A at 8/20µs), and equivalent hold current (150mA). This part is ROHS3 compliant and carries active product status, eliminating obsolescence risk. The reduced capacitance (30pF vs. 60pF) represents an improvement in high-frequency performance characteristics.

Secondary Recommendation - Matched Specifications: P1300SALRP (Littelfuse Inc., SIDACtor® series) matches the original part's 150A peak pulse current specification with identical hold current (150mA) and equivalent voltage ratings. ROHS3 compliance and active status support long-term supply chain stability. On-state voltage (4V) and capacitance (45pF) variations are within acceptable functional tolerance for standard transient suppression applications.

Higher Current Capacity Options: TB1300M-13-F (Diodes Incorporated), P1300SBLRP, P1300SCLRP, and P1300SCMCLRP provide increased peak pulse current ratings (250A to 400A) while maintaining identical voltage specifications. These parts are suitable for applications requiring enhanced transient suppression margin. All carry ROHS3 compliance and active product status.

Extended Performance Option: P1300SDLRP (Littelfuse Inc.) offers 1kA peak pulse current with 200A at 10/1000µs specification, providing maximum transient suppression capability within the 120V voltage class. Hold current is reduced to 50mA. This part is appropriate for high-stress transient environments.

Multi-Element Consideration: P1302SALRP and P1302SBLRP feature dual-element (TwinChip™) configurations with 150A and 250A peak pulse ratings respectively. These parts differ from the single-element original specification and require circuit-level evaluation for compatibility.

All recommended active-status substitutes provide ROHS3 compliance, addressing the original part's RoHS non-compliant status.

Frequently Asked Questions (FAQ)

Q: Can SMTPA120 directly replace TSMBJ0309C-130 without circuit modification? A: SMTPA120 meets all critical electrical parameters: 120V off-state voltage, 160V breakover voltage, 150A peak pulse current (8/20µs), and 150mA hold current. The DO-214AA SMB package and surface mount configuration are identical. The reduced capacitance (30pF vs. 60pF) typically improves high-frequency response. No circuit modification is required for standard transient suppression applications.

Q: What is the difference between "Direct Equivalent" and "Functional Equivalent" substitutes? A: Direct equivalents match all specified parameters including secondary characteristics like on-state voltage and capacitance. Functional equivalents meet primary voltage and current requirements but may vary in secondary parameters. Both categories maintain identical package, mounting type, and core suppression function.

Q: Why do some substitute parts have higher peak pulse current ratings? A: Parts such as TB1300M-13-F (250A) and P1300SCLRP (400A) provide increased transient suppression capacity while maintaining identical voltage specifications. These higher-rated parts are suitable for applications with more severe transient events or where additional safety margin is required. Selection depends on actual circuit transient stress levels.

Q: Are all substitute parts RoHS compliant? A: All recommended active-status substitutes carry ROHS3 compliance certification. The original TSMBJ0309C-130 is RoHS non-compliant. Substitution with ROHS3-compliant parts addresses regulatory requirements for new designs and production.

Q: What does "Number of Elements" mean in the parameter table? A: This indicates the internal configuration: single-element parts (1) contain one thyristor structure, while dual-element parts (2) such as P1302SALRP and P1302SBLRP contain two integrated thyristor structures in a single package. Single-element parts are direct replacements for the original TSMBJ0309C-130.

Q: Can I use P1300SDLRP (1kA rating) as a general replacement? A: P1300SDLRP is suitable for applications requiring maximum transient suppression within the 120V voltage class. The 1kA peak pulse rating provides significant margin above the original 150A specification. However, the reduced hold current (50mA vs. 150mA) requires verification against specific circuit requirements. This part is appropriate for high-stress transient environments.

Q: What is the significance of capacitance variation among substitute parts? A: Capacitance affects high-frequency transient response and circuit loading. The original part specifies 60pF. Substitutes range from 30pF (SMTPA120) to 160pF (P1301SCLRP). Lower capacitance generally improves high-frequency performance, while higher capacitance may provide better low-frequency transient coupling. Selection depends on the specific frequency content of transient events in the application.

Q: Why is the original part obsolete? A: TSMBJ0309C-130 is classified as obsolete by the manufacturer. Active-status substitutes from STMicroelectronics, Diodes Incorporated, and Littelfuse Inc. provide equivalent or superior performance with ongoing supply chain support and ROHS3 compliance.