P0640SC Equivalent & Substitute Parts

Part Overview

The P0640SC is a 58V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the DO-214AA (SMB) package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates within the SIDACtor® series and provides transient voltage suppression for circuit protection applications.

Substiute Parts

P0640SC

Littelfuse Inc.In Stock: 10377P0640SC Datasheet

Current PartRFQ

P0640SCLRP

Littelfuse Inc.In Stock: 156878P0640SCLRP Datasheet

DirectRFQ

SMP100LC-65

STMicroelectronicsIn Stock: 55194SMP100LC-65 Datasheet

MFR RecommendedRFQ

TISP4070H3BJR-S

Bourns Inc.In Stock: 5247TISP4070H3BJR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P0640SC are grouped based on electrical parameter compatibility within the TVS thyristor category. The primary substitution criteria are:

• Off-State Voltage: 58V nominal (determines circuit protection threshold)
• Peak Pulse Current (8/20µs): 400A or higher (ensures equivalent surge handling capability)
• Package / Case: DO-214AA, SMB (ensures mechanical and thermal compatibility)
• Mounting Type: Surface Mount (maintains PCB assembly compatibility)
• Hold Current (Ih): 150mA (ensures consistent device triggering behavior)

Parts are classified as direct equivalents when all electrical parameters match within the specified tolerances. Parts with variations in peak pulse current or breakover voltage are listed as functional alternatives where application-specific verification may be required.

Parameter Comparison

Engineering Selection Recommendations

P0640SCLRP (Littelfuse Inc.) is the direct equivalent substitute for the obsolete P0640SC. This part maintains identical electrical specifications across all critical parameters: 58V off-state voltage, 77V breakover voltage, 400A peak pulse current (8/20µs), and 150mA hold current. The P0640SCLRP is active in production status and ROHS3 compliant, addressing both obsolescence and regulatory requirements. Packaging is available in Cut Tape and Digi-Reel formats with 156,781 units in stock.

SMP100LC-65 (STMicroelectronics) is a functional alternative with a higher off-state voltage of 65V and breakover voltage of 85V. This part maintains the 400A peak pulse current rating and 150mA hold current. The increased voltage rating provides enhanced protection margin in applications where the higher threshold is acceptable. This part is ROHS3 compliant and active in production.

TISP4070H3BJR-S (Bourns Inc.) is a functional alternative with a reduced peak pulse current rating of 300A compared to the 400A specification of the P0640SC. The off-state voltage and hold current remain at 58V and 150mA respectively. This part is suitable for applications with lower surge current requirements. The part is ROHS3 compliant and active in production, available in Tape & Reel packaging.

Frequently Asked Questions (FAQ)

Q: Can P0640SCLRP be used as a direct replacement for P0640SC?

A: Yes. P0640SCLRP is the direct equivalent substitute. Both parts share identical electrical specifications: 58V off-state voltage, 77V breakover voltage, 400A peak pulse current (8/20µs), and 150mA hold current. The primary difference is product status—P0640SCLRP is active in production while P0640SC is obsolete. Both use the DO-214AA SMB package.

Q: What is the difference between P0640SCLRP and SMP100LC-65?

A: The primary difference is off-state voltage: P0640SCLRP operates at 58V while SMP100LC-65 operates at 65V. Both maintain 400A peak pulse current and 150mA hold current. The SMP100LC-65 has a higher breakover voltage (85V vs. 77V) and lower capacitance (90pF vs. 155pF). SMP100LC-65 is suitable when higher voltage protection margins are required.

Q: Can TISP4070H3BJR-S replace the P0640SC in all applications?

A: TISP4070H3BJR-S has a reduced peak pulse current rating of 300A compared to the 400A specification of P0640SC. This part is suitable only for applications where the lower surge current rating is acceptable. Off-state voltage (58V) and hold current (150mA) are identical. Verify application surge current requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. P0640SCLRP, SMP100LC-65, and TISP4070H3BJR-S are all ROHS3 compliant. The original P0640SC is RoHS non-compliant. Substitution with any of these parts addresses both obsolescence and regulatory compliance requirements.

Q: Do all substitute parts use the same package?

A: Yes. All substitute parts use the DO-214AA SMB package, ensuring mechanical and thermal compatibility with the original P0640SC. Surface mount mounting type is consistent across all parts.

Q: What is the inventory status of substitute parts?

A: P0640SCLRP has 156,781 units in stock. SMP100LC-65 has 55,100 units in stock. TISP4070H3BJR-S has 5,176 units in stock. All parts are available as new original stock.