HSMP-4890-TR2G Equivalent & Substitute Parts

Part Overview

The HSMP-4890-TR2G is an RF PIN diode manufactured by Broadcom Limited, designed for RF switching and attenuation applications. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates at peak reverse voltages up to 100V with a maximum current rating of 1A in a compact SOT-23-3 surface-mount package.

Substiute Parts

HSMP-4890-TR2G

Broadcom LimitedIn Stock: 930HSMP-4890-TR2G Datasheet

Current PartRFQ

CLA4611-085LF

Skyworks Solutions Inc.In Stock: 2240CLA4611-085LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HSMP-4890-TR2G is determined by the following critical parameters:

• Diode Type: PIN - Single configuration required for RF switching functionality
• Voltage Rating: Minimum 100V peak reverse voltage to maintain circuit performance
• Current Capacity: Minimum 1A maximum current rating
• Frequency Performance: Capacitance and resistance characteristics at specified measurement conditions
• Operating Temperature Range: Minimum 150°C junction temperature capability
• Package Compatibility: Physical and electrical compatibility with SOT-23-3 footprint or equivalent

The CLA4611-085LF meets these substitution criteria while offering enhanced electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The CLA4611-085LF serves as a functional substitute for the obsolete HSMP-4890-TR2G based on the following factors:

Electrical Compatibility: The substitute meets or exceeds all critical electrical parameters. Peak reverse voltage (180V vs. 100V), maximum current (1.5A vs. 1A), and operating temperature (175°C vs. 150°C) all provide margin above the original specification.

Product Status: The CLA4611-085LF is in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete HSMP-4890-TR2G.

Compliance: The substitute is ROHS3 compliant and carries REACH Unaffected status, matching the regulatory requirements of the original part.

Package Consideration: The substitute uses a 3-QFN (2x2) package instead of SOT-23-3. PCB layout redesign is required to accommodate the different package footprint and pin configuration.

Moisture Sensitivity: The substitute has MSL 1 (Unlimited) compared to MSL 2A (4 Weeks), providing improved handling and storage characteristics.

Frequently Asked Questions (FAQ)

Q: Can the CLA4611-085LF be used as a direct pin-for-pin replacement?

A: No. While both are PIN diode types, the CLA4611-085LF uses a 3-QFN (2x2) package versus the SOT-23-3 package of the HSMP-4890-TR2G. PCB layout modification is required.

Q: What are the key electrical differences between these parts?

A: The CLA4611-085LF provides higher voltage rating (180V vs. 100V), higher current capacity (1.5A vs. 1A), and lower forward resistance (1.2Ohm vs. 2.5Ohm). These differences represent performance enhancements rather than limitations.

Q: Is the substitute suitable for RF switching applications?

A: Yes. Both parts are PIN diode types designed for RF switching. The substitute's lower forward resistance and higher current rating make it suitable for the same application class.

Q: What compliance certifications apply to the substitute?

A: The CLA4611-085LF is ROHS3 compliant and carries REACH Unaffected status. Both certifications match the regulatory framework of the original part.

Q: How does the package change affect circuit design?

A: The 3-QFN (2x2) package has a smaller footprint than SOT-23-3 but requires different PCB pad layout and trace routing. Component placement density may improve, but design verification is necessary.

Q: What is the moisture sensitivity impact?

A: The substitute has MSL 1 (Unlimited) versus MSL 2A (4 Weeks). This means the CLA4611-085LF has no time-limited storage restrictions and can be stored indefinitely under controlled conditions, improving supply chain flexibility.