HSMP-389C-TR1G Equivalent & Substitute Parts

Part Overview

The HSMP-389C-TR1G is an RF PIN diode manufactured by Broadcom Limited, designed for high-frequency switching and attenuation applications. This component features a 100V peak reverse voltage rating with 1A maximum current capability in a compact SC-70/SOT-323 surface-mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

HSMP-389C-TR1G

Broadcom LimitedIn Stock: 21300HSMP-389C-TR1G Datasheet

Current PartRFQ

MADP-007448-1146DT

MACOM Technology SolutionsIn Stock: 12833MADP-007448-1146DT Datasheet

MFR RecommendedRFQ

RN779FFHT106

Rohm SemiconductorIn Stock: 4199RN779FFHT106 Datasheet

MFR RecommendedRFQ

RN779FT106

Rohm SemiconductorIn Stock: 29426RN779FT106 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HSMP-389C-TR1G is determined by the following critical parameters: diode type (PIN - 1 Pair Series Connection), package compatibility (SC-70/SOT-323), voltage rating, current rating, and operating temperature range. The three identified substitute parts are grouped based on their ability to maintain these core electrical and mechanical specifications.

MADP-007448-1146DT qualifies as a direct substitute due to matching diode type, package form factor, and voltage rating (100V). This part maintains the same MSL classification and offers active product status with enhanced operating temperature (175°C).

RN779FT106 and RN779FFHT106 are functionally equivalent alternatives with reduced voltage ratings (50V) and current capacity (50mA). Both parts maintain the PIN diode configuration, SC-70/SOT-323 package compatibility, and active product status. The RN779FFHT106 includes automotive-grade qualification (AEC-Q101).

Parameter Comparison

Engineering Selection Recommendations

MADP-007448-1146DT is the primary substitute for applications requiring full electrical parameter compatibility. This part maintains the 100V voltage rating and provides superior current handling (150mA vs. 1A original specification). Active product status ensures long-term availability and supply chain stability. The elevated operating temperature rating (175°C) provides additional thermal margin.

RN779FT106 and RN779FFHT106 are suitable alternatives for applications with reduced voltage and current requirements (50V, 50mA). Both parts offer active product status and ROHS3 compliance. RN779FFHT106 includes automotive-grade qualification (AEC-Q101), making it appropriate for automotive and high-reliability applications. RN779FT106 provides the highest inventory availability (29,400 units).

Selection between these alternatives depends on circuit voltage and current specifications. Applications operating at or below 50V with current demands not exceeding 50mA can utilize either Rohm part. Applications requiring full 100V operation must use MADP-007448-1146DT.

Frequently Asked Questions (FAQ)

Q: Can RN779FT106 or RN779FFHT106 replace HSMP-389C-TR1G in all applications?

A: No. These parts have reduced voltage ratings (50V vs. 100V) and current capacity (50mA vs. 1A). Substitution is valid only for circuits operating within these reduced specifications.

Q: Is MADP-007448-1146DT a direct replacement for HSMP-389C-TR1G?

A: MADP-007448-1146DT maintains voltage rating (100V), diode type, and package compatibility. Current rating is reduced to 150mA. This part is suitable for applications not requiring the full 1A current specification of the original part.

Q: What is the package compatibility between these parts?

A: All substitute parts use SC-70/SOT-323 packaging, ensuring mechanical and electrical compatibility with existing PCB layouts designed for HSMP-389C-TR1G.

Q: Are there compliance or qualification differences between the substitutes?

A: RN779FFHT106 includes AEC-Q101 automotive qualification. RN779FT106 and MADP-007448-1146DT do not specify automotive qualification. All parts are ROHS3 compliant or unaffected by REACH regulations.

Q: Why is HSMP-389C-TR1G classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Broadcom Limited. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. Active substitute parts ensure design continuity.