SMP30-62 Equivalent & Substitute Parts

Part Overview

The SMP30-62 is a 62V off-state transient voltage suppressor thyristor manufactured by STMicroelectronics in the TRISIL™ series. This surface-mount device is housed in a DO-214AC (SMA) package and is designed to protect circuits from transient overvoltage events with a peak pulse current rating of 70 A at 8/20µs pulse width. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity when the primary part becomes unavailable or when alternative electrical characteristics better suit specific application requirements.

Substiute Parts

SMP30-62

STMicroelectronicsIn Stock: 5845SMP30-62 Datasheet

Current PartRFQ

P0640SALRP

Littelfuse Inc.In Stock: 2196P0640SALRP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMP30-62 are identified based on functional equivalence within the transient voltage suppressor thyristor category. The substitution logic is determined by the following key parameters:

Voltage Compatibility: Off-state voltage and breakover voltage must fall within acceptable operating ranges for the protected circuit. The SMP30-62 operates at 62V off-state with an 82V breakover threshold.

Current Handling: Peak pulse current ratings at standard pulse widths (8/20µs and 10/1000µs) determine the device's ability to suppress transient events of specified magnitude and duration.

Hold Current: The 150 mA hold current threshold defines the minimum current required to maintain thyristor conduction after triggering.

Package and Mounting: Surface-mount packages in the DO-214 family (DO-214AC/SMA and DO-214AA/SMB) are mechanically compatible with standard PCB assembly processes, though footprint differences may require layout modification.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status ensure suitability for regulated applications without material substitution concerns.

The P0640SALRP substitute exhibits different electrical characteristics (58V off-state, 150A peak pulse current) and package form factor (DO-214AA/SMB), requiring evaluation against specific circuit protection requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria

The SMP30-62 remains the preferred choice for applications requiring 62V off-state protection with 70A peak pulse current handling in a compact SMA package. Both the main part and substitute are active products with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory suitability.

Substitution Considerations

The P0640SALRP substitute from Littelfuse operates at a lower off-state voltage (58V versus 62V) and higher peak pulse current (150A versus 70A). This substitute is suitable only when circuit protection requirements align with the lower voltage threshold and higher current capacity. The larger SMB package footprint requires PCB layout modification compared to the SMA form factor of the main part.

Compliance and Supply Chain

Both devices maintain identical regulatory status (RoHS3 compliant, REACH unaffected, EAR99 classification). Selection between the two should be driven by specific circuit voltage and current protection requirements rather than compliance considerations. Current inventory levels (5796 pcs for SMP30-62 and 2112 pcs for P0640SALRP) support both immediate and sustained procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the P0640SALRP directly replace the SMP30-62 on the same PCB?

A: No. The P0640SALRP uses a DO-214AA (SMB) package, which has a larger footprint than the SMP30-62's DO-214AC (SMA) package. PCB layout modification is required, including pad size and spacing adjustments.

Q: What is the voltage difference between these two parts, and does it matter?

A: The SMP30-62 has a 62V off-state voltage with 82V breakover, while the P0640SALRP operates at 58V off-state with 77V breakover. The 4V difference in off-state voltage affects the protection threshold. Selection depends on the specific overvoltage protection level required by the circuit.

Q: Why does the P0640SALRP have a higher peak pulse current rating?

A: The P0640SALRP is rated for 150A peak pulse current (8/20µs) compared to the SMP30-62's 70A. This higher current capacity is a characteristic of the SIDACtor® series design and the larger SMB package form factor, which provides greater thermal dissipation capability.

Q: Are both parts suitable for high-reliability applications?

A: Yes. Both the SMP30-62 and P0640SALRP are active products with RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1). Both are suitable for regulated and high-reliability applications without additional qualification.

Q: What is the hold current, and is it the same for both parts?

A: The hold current (Ih) is 150 mA for both devices. This is the minimum current required to maintain thyristor conduction after the device has been triggered by an overvoltage event. Identical hold current values indicate similar latching behavior between the two parts.

Q: How do the capacitance values differ, and what is the impact?

A: The SMP30-62 has 40 pF capacitance, while the P0640SALRP has 60 pF. Higher capacitance may affect high-frequency circuit behavior and signal integrity in sensitive applications. Capacitance selection should align with circuit impedance and frequency requirements.

Q: What packaging options are available for the SMP30-62?

A: The SMP30-62 is supplied in Cut Tape (CT) and Digi-Reel® packaging formats. The P0640SALRP is supplied in Tape & Reel (TR) format. Packaging selection depends on production volume and assembly line requirements.