HSMP-482B-TR1G Equivalent & Substitute Parts

Part Overview

The HSMP-482B-TR1G is an RF PIN diode manufactured by Broadcom Limited, designed for RF switching and attenuation applications. This single PIN diode operates at a peak reverse voltage of 50V with a maximum current rating of 1A in an SOT-323 package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

HSMP-482B-TR1G

Broadcom LimitedIn Stock: 50135HSMP-482B-TR1G Datasheet

Current PartRFQ

CLA4605-085LF

Skyworks Solutions Inc.In Stock: 6611CLA4605-085LF Datasheet

MFR RecommendedRFQ

CLA4608-085LF

Skyworks Solutions Inc.In Stock: 16626CLA4608-085LF Datasheet

MFR RecommendedRFQ

MA4P7436-287T

MACOM Technology SolutionsIn Stock: 6228MA4P7436-287T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the HSMP-482B-TR1G is determined by the following electrical and mechanical parameters:

• Diode Type: PIN - Single configuration required
• Voltage Rating: Peak reverse voltage must meet or exceed 50V minimum
• Current Capacity: Maximum current rating must support 1A operation
• Capacitance Characteristics: Junction capacitance at specified bias voltage and frequency
• Resistance Profile: Forward resistance at specified bias current and frequency
• Operating Temperature Range: Must support minimum 150°C junction temperature
• Package Compatibility: Physical form factor and pin configuration

The three substitute parts listed below meet these criteria with varying performance enhancements in voltage rating, current handling, power dissipation, and operating temperature.

Parameter Comparison

Engineering Selection Recommendations

CLA4605-085LF (Skyworks Solutions Inc.) provides a direct functional upgrade with 60V peak reverse voltage, 1.5A maximum current, and 1W power dissipation in an active product status. This part offers improved thermal performance at 175°C operating temperature and ROHS3 compliance. The 3-QFN (2x2) package differs from the original SOT-323, requiring PCB layout modification.

CLA4608-085LF (Skyworks Solutions Inc.) extends voltage capability to 180V with 2W power dissipation, suitable for applications requiring higher voltage margins. Active product status and ROHS3 compliance ensure long-term availability. The 3-QFN (2x2) package requires PCB redesign similar to CLA4605-085LF.

MA4P7436-287T (MACOM Technology Solutions) maintains the SOT-23 package form factor, minimizing PCB layout changes. This part offers 75V peak reverse voltage and 250mW power dissipation with active product status. Current rating is limited to 150mA, making this option suitable only for applications not requiring full 1A operation.

Frequently Asked Questions (FAQ)

Q: Can CLA4605-085LF or CLA4608-085LF be used as direct pin-for-pin replacements?

A: No. While both Skyworks parts are functionally equivalent PIN diodes, they use 3-QFN (2x2) packages instead of the original SOT-323. PCB layout and footprint modifications are required.

Q: Which substitute part requires the least PCB redesign?

A: MA4P7436-287T uses a SOT-23 package, which is mechanically similar to SOT-323 and may require minimal layout changes. However, verify pin assignments and thermal pad requirements before implementation.

Q: What is the current limitation of MA4P7436-287T?

A: MA4P7436-287T has a maximum current rating of 150mA, compared to the original 1A specification. This part is suitable only for applications operating below 150mA.

Q: Are all substitute parts RoHS compliant?

A: CLA4605-085LF and CLA4608-085LF are ROHS3 compliant. MA4P7436-287T RoHS status is not specified in available documentation.

Q: What are the operating temperature differences?

A: The original HSMP-482B-TR1G operates to 150°C junction temperature. All three substitute parts support 175°C, providing improved thermal margin.

Q: How do capacitance characteristics compare?

A: CLA4605-085LF offers the lowest capacitance at 0.45pF @ 6V, 1MHz. CLA4608-085LF provides 0.65pF @ 38V, 1MHz. MA4P7436-287T matches the original at 1pF @ 20V, 1MHz. Selection depends on frequency response requirements.

Q: Which substitute provides the best forward resistance performance?

A: CLA4608-085LF offers the lowest forward resistance at 1.2Ohm @ 10mA, 500MHz. MA4P7436-287T provides 500mOhm @ 10mA, 100MHz, closest to the original specification.