HSMP-389C-TR1 Equivalent & Substitute Parts

Part Overview

The HSMP-389C-TR1 is an RF Diode PIN in a 1 Pair Series Connection configuration manufactured by Broadcom Limited. This component is rated for 100V peak reverse voltage with a maximum current of 1 A and operates at a junction temperature of 150°C. The part is packaged in SC-70/SOT-323 form factor.

This part has reached obsolete status. Identifying equivalent substitute components ensures design continuity and supply chain reliability for applications requiring RF PIN diode functionality.

Substiute Parts

HSMP-389C-TR1

Broadcom LimitedIn Stock: 9968HSMP-389C-TR1 Datasheet

Current PartRFQ

RN779FFHT106

Rohm SemiconductorIn Stock: 4199RN779FFHT106 Datasheet

MFR RecommendedRFQ

RN779FT106

Rohm SemiconductorIn Stock: 29426RN779FT106 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HSMP-389C-TR1 are identified based on the following critical parameters:

• Diode Type: PIN - 1 Pair Series Connection (functional equivalence)
• Package / Case: SC-70, SOT-323 (mechanical compatibility)
• Operating Temperature: 150°C (TJ) (thermal compatibility)
• Voltage - Peak Reverse (Max): Substitute must meet or exceed 100V requirement
• Current - Max: Substitute must meet or exceed 1 A requirement
• Capacitance and Resistance characteristics: Must fall within acceptable ranges for RF applications

The identified substitutes (RN779FT106 and RN779FFHT106) maintain the same diode type, package form factor, and operating temperature. However, both substitutes operate at reduced voltage (50V) and current (50 mA) ratings compared to the original part. These substitutes are suitable only for applications where the lower electrical ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Both RN779FT106 and RN779FFHT106 are active products from Rohm Semiconductor with ROHS3 compliance, addressing the obsolescence and regulatory status of the HSMP-389C-TR1.

RN779FT106 is available in higher inventory (29,400 pcs) compared to RN779FFHT106 (4,100 pcs), providing better supply chain availability.

RN779FFHT106 carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Selection between these two substitutes depends on application-specific requirements for automotive qualification and inventory availability. Both substitutes require design verification due to reduced voltage and current ratings relative to the original part.

Frequently Asked Questions (FAQ)

Q: Can RN779FT106 or RN779FFHT106 directly replace HSMP-389C-TR1 without circuit modification?

A: Direct replacement is possible only if the application operates within the reduced electrical specifications: 50V peak reverse voltage and 50 mA maximum current. Circuit verification is required to confirm compatibility with these lower ratings.

Q: What are the key differences between RN779FT106 and RN779FFHT106?

A: Both parts are electrically identical with the same electrical specifications. RN779FFHT106 includes AEC-Q101 automotive qualification. RN779FT106 has significantly higher inventory availability.

Q: Are the package dimensions identical between the original and substitute parts?

A: All three parts use SC-70/SOT-323 packaging, ensuring mechanical compatibility in PCB layouts.

Q: What is the impact of higher capacitance in the substitute parts?

A: Substitute parts exhibit 0.9pF capacitance at 35V compared to 0.3pF at 5V in the original part. This difference may affect RF circuit performance and requires evaluation in the specific application context.

Q: Do the substitute parts meet current RoHS requirements?

A: Yes, both RN779FT106 and RN779FFHT106 are ROHS3 compliant, addressing regulatory requirements not met by the obsolete HSMP-389C-TR1.