HSMP-481B-TR2G Equivalent & Substitute Parts

Part Overview

The HSMP-481B-TR2G is an RF Diode PIN - Single manufactured by Broadcom Limited, rated for 100V peak reverse voltage and 1 A maximum current in an SOT-323 package. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain RF performance characteristics while accommodating package and thermal requirements of the application.

Substiute Parts

HSMP-481B-TR2G

Broadcom LimitedIn Stock: 781HSMP-481B-TR2G Datasheet

Current PartRFQ

CLA4611-085LF

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

MFR RecommendedRFQ

SMP1304-079LF

Skyworks Solutions Inc.In Stock: 40693SMP1304-079LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HSMP-481B-TR2G is determined by the following criteria:

• Diode Type: Must be PIN - Single configuration
• Voltage Rating: Substitute must equal or exceed 100V peak reverse voltage
• Current Rating: Substitute must equal or exceed 1 A maximum current
• RF Characteristics: Capacitance and resistance parameters must be compatible with the application frequency and bias conditions
• Operating Temperature: Substitute must support the required thermal range
• Moisture Sensitivity: MSL rating must be acceptable for assembly and storage conditions

The two qualified substitutes meet these criteria with enhanced voltage and current ratings, providing design margin while maintaining PIN diode functionality.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are manufactured by Skyworks Solutions Inc. and carry Active product status, ensuring long-term availability and supply chain stability compared to the Obsolete HSMP-481B-TR2G.

CLA4611-085LF provides the highest voltage rating (180V) and current capacity (1.5 A) with 2 W power dissipation capability. This part is suitable for applications requiring enhanced thermal performance and higher power handling. The 2-VDFN package represents a package change from the original SOT-323 and requires PCB layout modification.

SMP1304-079LF offers 200V peak reverse voltage with lower power dissipation (250 mW) and maintains closer RF characteristic alignment to the original part at 100 MHz bias conditions. The SC-79 package is a direct mechanical alternative to SOT-323, minimizing layout redesign requirements. This part is ROHS3 Compliant and supports the full operating temperature range specified for the original component.

Both substitutes are REACH Unaffected and carry MSL 1 rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can CLA4611-085LF be used as a direct replacement for HSMP-481B-TR2G?

A: CLA4611-085LF is functionally equivalent but requires PCB layout modification due to package change from SOT-323 to 2-VDFN Exposed Pad. Electrical performance is compatible with enhanced voltage and current margins.

Q: What is the primary difference between the two substitute options?

A: SMP1304-079LF maintains SC-79 packaging similar to the original SOT-323 footprint, reducing layout redesign effort. CLA4611-085LF uses 2-VDFN packaging and provides higher power dissipation capability (2 W vs. 250 mW).

Q: Are both substitutes suitable for RF applications at 100 MHz?

A: Yes. Both parts maintain PIN diode RF characteristics compatible with 100 MHz operation. SMP1304-079LF specifies 2Ohm resistance at 100 MHz, matching the original bias condition. CLA4611-085LF operates at 500 MHz bias conditions with lower resistance (1.2Ohm), indicating improved high-frequency performance.

Q: What is the impact of voltage rating differences?

A: Both substitutes exceed the 100V requirement of the original part. Higher voltage ratings provide design margin for transient overvoltage conditions and allow operation in higher-voltage circuit topologies without derating.

Q: Are moisture sensitivity levels compatible?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating identical moisture sensitivity classification and compatible storage and assembly requirements.

Q: Which substitute requires the least design modification?

A: SMP1304-079LF in SC-79 package provides the closest mechanical compatibility to the original SOT-323 package, minimizing PCB footprint changes and assembly process modifications.