HSMS-285C-TR2G Equivalent & Substitute Parts

Part Overview

The HSMS-285C-TR2G is an RF Schottky diode manufactured by Broadcom Limited, configured as a 1-pair series connection with a 2V peak reverse voltage rating. Packaged in SC-70/SOT-323, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for design continuity, production support, and system maintenance. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, capacitance characteristics, and thermal performance.

Substiute Parts

HSMS-285C-TR2G

Broadcom LimitedIn Stock: 1082HSMS-285C-TR2G Datasheet

Current PartRFQ

SBX201C-TB-E

onsemiIn Stock: 2125SBX201C-TB-E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HSMS-285C-TR2G is determined by strict alignment with the following electrical and mechanical parameters:

• Diode Configuration: Schottky - 1 Pair Series Connection (functional topology must match)
• Voltage Rating: Peak reverse voltage of 2V (maximum allowable rating)
• Capacitance Characteristics: Capacitance measured at specified voltage and frequency (0.3pF @ 1V, 1MHz as reference)
• Operating Temperature: Maximum junction temperature of 150°C
• Package Compatibility: SC-70/SOT-323 or equivalent 3-pin surface-mount packages
• Compliance & Certifications: REACH Unaffected status and MSL rating

The substitute part SBX201C-TB-E from onsemi meets these criteria and is qualified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SBX201C-TB-E qualifies as a suitable substitute for the HSMS-285C-TR2G based on the following factors:

• Both components share identical Schottky diode configuration (1-pair series connection) and 2V peak reverse voltage rating
• Capacitance values are closely matched (0.3pF vs. 0.28pF), with measurement conditions at comparable voltage levels
• Operating temperature ratings are identical at 150°C maximum junction temperature
• Both components maintain MSL 1 (Unlimited) moisture sensitivity classification
• Both components carry REACH Unaffected compliance status
• Package footprints are compatible within standard 3-pin surface-mount specifications (SOT-323 and SOT-23-3 are mechanically and electrically interchangeable in most applications)

The SBX201C-TB-E additionally specifies a 50 mA maximum current rating, providing defined current handling capability where the original part does not specify this parameter.

Frequently Asked Questions (FAQ)

Q: Can the SBX201C-TB-E be used as a direct replacement for the HSMS-285C-TR2G in existing designs?

A: Yes. Both components meet the critical substitution criteria: identical Schottky diode configuration, matching 2V voltage rating, comparable capacitance characteristics, and compatible package footprints. PCB layout modifications are not required for standard applications.

Q: Are there package compatibility concerns between SOT-323 and SOT-23-3?

A: No. SC-70/SOT-323 and TO-236-3/SC-59/SOT-23-3 are mechanically and electrically equivalent 3-pin surface-mount packages with identical pin spacing and functionality. Standard pick-and-place equipment can handle both package types without adjustment.

Q: What is the significance of the capacitance measurement difference (0.3pF @ 1V vs. 0.28pF @ 0V)?

A: The capacitance values are measured at slightly different bias voltages (1V vs. 0V). Both measurements are taken at 1MHz and fall within the expected operating range for Schottky diodes of this class. The 0.02pF difference is negligible for RF applications.

Q: Why are both components listed as obsolete?

A: Both the HSMS-285C-TR2G and SBX201C-TB-E are discontinued products. However, inventory availability exists through authorized distributors. For new designs, consultation with component suppliers regarding current-production alternatives is recommended.

Q: Does the SBX201C-TB-E's specified 50 mA current rating affect substitution suitability?

A: No. The specified 50 mA rating on the SBX201C-TB-E represents the maximum current the component can safely handle. This specification does not restrict its use in applications requiring lower current levels. The original HSMS-285C-TR2G, which does not specify current rating, can be replaced without concern provided the application current remains within the SBX201C-TB-E's 50 mA limit.