SMP1320-017LF RF PIN Diode Equivalent & Substitute Parts

Part Overview

The SMP1320-017LF is an RF PIN diode manufactured by Skyworks Solutions Inc., designed for RF switching and attenuation applications. This single PIN diode operates at 50V peak reverse voltage with 250 mW power dissipation in a SOT-143 package. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. Active equivalent parts maintain the same core electrical characteristics while offering enhanced performance specifications or improved packaging options.

Substiute Parts

SMP1320-017LF

Skyworks Solutions Inc.In Stock: 1560SMP1320-017LF Datasheet

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SMP1320-040LF

Skyworks Solutions Inc.In Stock: 1720SMP1320-040LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMP1320-017LF is determined by the following critical electrical and mechanical parameters:

• Diode Type: PIN - Single configuration must be maintained
• Voltage - Peak Reverse (Max): Minimum 50V rating required
• Operating Temperature Range: -65°C ~ 150°C compatibility
• Resistance @ If, F: 900mOhm @ 10mA, 100MHz specification
• RoHS Compliance: ROHS3 Compliant status required

The SMP1320-040LF qualifies as a direct substitute based on matching these core parameters. While the substitute offers enhanced power dissipation (750 mW vs. 250 mW) and improved packaging (0402 vs. SOT-143), the fundamental electrical characteristics remain compatible for RF PIN diode applications.

Parameter Comparison

Engineering Selection Recommendations

The SMP1320-040LF is qualified as a direct substitute for the obsolete SMP1320-017LF based on matching electrical specifications and compliance certifications. Both components are manufactured by Skyworks Solutions Inc., maintain ROHS3 compliance, and share identical core RF characteristics including 50V peak reverse voltage, 900mOhm resistance at 10mA/100MHz, and -65°C to 150°C operating temperature range.

The substitute offers superior power dissipation capability (750 mW vs. 250 mW), enabling operation in higher-power RF applications. The 0402 package provides improved board density compared to the SOT-143 footprint. Both components carry MSL Level 1 moisture sensitivity, indicating unlimited shelf life under standard storage conditions.

Selection of the SMP1320-040LF eliminates obsolescence risk while maintaining full electrical compatibility with existing RF PIN diode circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SMP1320-040LF directly replace the SMP1320-017LF in existing designs?

A: Yes. Both components share identical peak reverse voltage (50V), resistance characteristics (900mOhm @ 10mA, 100MHz), and operating temperature range (-65°C ~ 150°C). The substitute is electrically compatible for RF PIN diode switching and attenuation applications.

Q: What are the package differences between these parts?

A: The SMP1320-017LF uses SOT-143 (TO-253-4) packaging, while the SMP1320-040LF uses 0402 (1005 Metric) packaging. PCB layout and footprint modifications are required when transitioning between these package types.

Q: Does the higher power dissipation of the SMP1320-040LF affect circuit performance?

A: The 750 mW rating of the SMP1320-040LF exceeds the 250 mW specification of the SMP1320-017LF. This enhanced capability does not degrade performance in applications designed for the lower-power part; it provides additional thermal margin and operational headroom.

Q: Are both parts RoHS compliant?

A: Yes. Both the SMP1320-017LF and SMP1320-040LF are ROHS3 compliant with MSL Level 1 moisture sensitivity, meeting current environmental and reliability standards.

Q: Why is the SMP1320-017LF listed as obsolete?

A: Manufacturer product status reflects end-of-life decisions. The SMP1320-040LF represents the active equivalent within the SMP1320 series, offering improved specifications and continued manufacturing support.