HSMP-4820-TR1G Equivalent & Substitute Parts

Part Overview

The HSMP-4820-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 a compact SOT-23-3 surface-mount package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Diode Type	PIN - Single
Voltage - Peak Reverse (Max)	50V
Current - Max	1 A
Capacitance @ Vr, F	0.75pF @ 20V, 1MHz
Resistance @ If, F	600mOhm @ 10mA, 1MHz
Operating Temperature	150°C (TJ)
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the HSMP-4820-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 values determine RF switching performance
Resistance Profile: Forward resistance affects insertion loss and power handling
Package Compatibility: Physical form factor and pin configuration must accommodate existing PCB layouts
Product Status: Active parts are preferred over obsolete classifications for long-term availability

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

Parameter Comparison

Parameter	HSMP-4820-TR1G	CLA4605-085LF	CLA4608-085LF	MA4P7436-287T
Manufacturer	Broadcom Limited	Skyworks Solutions Inc.	Skyworks Solutions Inc.	MACOM Technology Solutions
Diode Type	PIN - Single	PIN - Single	PIN - Single	PIN - Single
Voltage - Peak Reverse (Max)	50V	60V	180V	75V
Current - Max	1 A	1.5 A	1.5 A	150 mA
Capacitance @ Vr, F	0.75pF @ 20V, 1MHz	0.45pF @ 6V, 1MHz	0.65pF @ 38V, 1MHz	1pF @ 20V, 1MHz
Resistance @ If, F	600mOhm @ 10mA, 1MHz	2Ohm @ 10mA, 500MHz	1.2Ohm @ 10mA, 500MHz	500mOhm @ 10mA, 100MHz
Power Dissipation (Max)	Not specified	1 W	2 W	250 mW
Operating Temperature	150°C (TJ)	175°C (TJ)	175°C (TJ)	175°C (TJ)
Package / Case	TO-236-3, SC-59, SOT-23-3	2-VDFN Exposed Pad, 3-QFN (2x2)	2-VDFN Exposed Pad, 3-QFN (2x2)	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	Not specified

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 requires PCB layout modification from the original SOT-23-3 footprint.

CLA4608-085LF (Skyworks Solutions Inc.) is suitable for applications requiring higher voltage tolerance up to 180V with 2W power dissipation capability. This part maintains 1.5A current capacity and active product status with ROHS3 compliance. The 3-QFN (2x2) package also requires layout redesign.

MA4P7436-287T (MACOM Technology Solutions) maintains the original SOT-23-3 package form factor, eliminating PCB redesign requirements. This part provides 75V peak reverse voltage and 175°C operating temperature in an active product status. Current capacity is limited to 150mA, which may restrict applications requiring full 1A operation. Power dissipation is rated at 250mW.

All three substitute parts are classified as active products, ensuring long-term availability and supply chain continuity compared to the obsolete HSMP-4820-TR1G.

Frequently Asked Questions (FAQ)

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

A: No. While these Skyworks parts are electrically compatible PIN diodes, they use a 3-QFN (2x2) package instead of the original SOT-23-3. PCB layout and footprint modifications are required.

Q: Which substitute maintains the original package footprint?

A: MA4P7436-287T from MACOM Technology Solutions uses the TO-236-3/SOT-23-3 package, matching the original HSMP-4820-TR1G form factor and enabling direct PCB replacement without layout changes.

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. Applications requiring full 1A operation must use CLA4605-085LF or CLA4608-085LF.

Q: Are all substitute parts RoHS compliant?

A: CLA4605-085LF and CLA4608-085LF are ROHS3 compliant. RoHS status for MA4P7436-287T is not specified in the provided data.

Q: What voltage ratings are available among the substitutes?

A: CLA4605-085LF operates at 60V, MA4P7436-287T at 75V, and CLA4608-085LF at 180V peak reverse voltage. All exceed the original 50V specification.

Q: Which substitute offers the best thermal performance?

A: CLA4605-085LF and CLA4608-085LF both support 175°C operating temperature, compared to 150°C for the original part. CLA4608-085LF provides the highest power dissipation rating at 2W.

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