SMP1340-075LF Equivalent & Substitute Parts

Part Overview

The SMP1340-075LF is an RF PIN diode manufactured by Skyworks Solutions Inc., designed for RF switching and attenuation applications. This component features a 1-pair series connection configuration with 50V peak reverse voltage rating and 250 mW power dissipation capability in an SC-70-3 package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

SMP1340-075LF

Skyworks Solutions Inc.In Stock: 3116SMP1340-075LF Datasheet

Current PartRFQ

SMP1340-079LF

Skyworks Solutions Inc.In Stock: 18334SMP1340-079LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMP1340-075LF is determined by matching the following critical electrical and mechanical parameters:

• Diode Configuration: PIN diode type with compatible internal structure
• Voltage Rating: Peak reverse voltage of 50V minimum
• Capacitance Characteristics: 0.3pF @ 5V, 1MHz
• Series Resistance: 1.2Ohm @ 10mA, 100MHz
• Power Dissipation: 250 mW capability
• Operating Temperature Range: -65°C to 150°C
• Package Compatibility: SC-70 or equivalent small-outline package
• Compliance: ROHS3 compliance required

The SMP1340-079LF qualifies as a functional substitute based on matching all critical electrical parameters and maintaining equivalent thermal and environmental specifications. The primary distinction lies in the internal diode configuration (single vs. series pair) and package designation, which do not affect electrical performance in equivalent applications.

Parameter Comparison

Engineering Selection Recommendations

The SMP1340-079LF is the qualified substitute for the obsolete SMP1340-075LF. Both components share identical electrical specifications across all critical parameters: voltage rating, capacitance, series resistance, power dissipation, and operating temperature range. Both maintain ROHS3 compliance and MSL-1 moisture sensitivity classification.

The primary consideration for implementation is package footprint compatibility. The SMP1340-075LF uses SC-70 (SOT-323) packaging, while the SMP1340-079LF uses SC-79 (SOD-523) packaging. PCB layout modifications may be required to accommodate the different package geometry. The SMP1340-079LF is currently in active production status with substantial inventory availability (18,290 pcs), ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the SMP1340-079LF directly replace the SMP1340-075LF without circuit modifications?

A: Electrical substitution is valid based on identical voltage, capacitance, resistance, and power dissipation specifications. However, physical package differences (SC-70 vs. SC-79) require PCB footprint verification and potential layout redesign.

Q: What is the difference between the diode configurations (1-pair series vs. single)?

A: The SMP1340-075LF contains a 1-pair series connection configuration, while the SMP1340-079LF uses a single diode configuration. Both achieve identical electrical performance at the specified operating parameters.

Q: Are there any compliance or certification differences between these parts?

A: Both components are ROHS3 compliant with identical moisture sensitivity levels (MSL-1). No compliance barriers exist for substitution.

Q: What is the inventory status of the substitute part?

A: The SMP1340-079LF has 18,290 pieces of new original stock available, compared to 3,034 pieces for the obsolete SMP1340-075LF.

Q: Do both parts operate across the same temperature range?

A: Yes, both components operate from -65°C to 150°C (TA), providing identical thermal performance specifications.