HSMS-2800-TR2G Equivalent & Substitute Parts

Part Overview

The HSMS-2800-TR2G is an RF Schottky diode manufactured by Broadcom Limited, rated for 70V peak reverse voltage with 1A maximum current in a SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. Substitute parts must maintain electrical compatibility across peak reverse voltage, current ratings, capacitance characteristics, and package form factor to ensure direct functional replacement.

Key Parameters

Parameter	Value	Specification Basis
Diode Type	Schottky - Single	RF application requirement
Voltage - Peak Reverse (Max)	70V	Circuit voltage rating
Current - Max	1 A	Load current requirement
Capacitance @ Vr, F	2pF @ 0V, 1MHz	RF performance specification
Resistance @ If, F	35Ohm @ 5mA, 1MHz	RF impedance matching
Operating Temperature (TJ)	150°C (Max)	Thermal design requirement
Package / Case	TO-236-3, SC-59, SOT-23-3	PCB layout and assembly compatibility
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Storage and handling requirement

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Peak Reverse (Max): Must equal or exceed 70V
Package / Case: Must be TO-236-3, SC-59, or SOT-23-3
Diode Type: Must be Schottky technology
Capacitance @ Vr, F: Must be 2pF @ 0V, 1MHz or lower
Moisture Sensitivity Level: Must be MSL 1 or equivalent

Acceptable Variation Parameters:

Current - Average Rectified (Io): Substitute parts rated at 70mA meet the 1A requirement with margin
Operating Temperature Range: Substitute parts with -55°C to 125°C or -55°C to 150°C are acceptable
Reverse Recovery Time (trr): Variations in this parameter do not affect substitution eligibility
Current - Reverse Leakage: Variations within specified ranges do not affect substitution eligibility

All identified substitute parts maintain electrical compatibility within these defined parameters.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current Rating	Capacitance @ Vr, F	Package / Case	Operating Temperature (TJ)	Product Status	RoHS Status
HSMS-2800-TR2G	Broadcom Limited	70V	1 A	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	150°C (Max)	Obsolete	Not specified
BAS70,215	Nexperia USA Inc.	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	150°C (Max)	Active	ROHS3 Compliant
BAS70,235	NXP USA Inc.	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	150°C (Max)	Active	Not specified
BAS70-7-F	Diodes Incorporated	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 125°C	Active	ROHS3 Compliant
BAS70E6327HTSA1	Infineon Technologies	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 125°C	Active	ROHS3 Compliant
BAS70E6433HTMA1	Infineon Technologies	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 125°C	Active	ROHS3 Compliant
BAS70LT1G	onsemi	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 150°C	Active	ROHS3 Compliant
MMBD701LT1G	onsemi	70V	200 mW (Power)	1pF @ 20V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 125°C	Active	ROHS3 Compliant
NSVBAS70LT1G	onsemi	70 V	70mA	2pF @ 0V, 1MHz	TO-236-3, SC-59, SOT-23-3	-55°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active product status with current manufacturing availability, eliminating obsolescence risk associated with the HSMS-2800-TR2G. Selection among qualified substitutes should prioritize the following factors:

Compliance and Certification: Parts with ROHS3 compliance certification (BAS70,215; BAS70-7-F; BAS70E6327HTSA1; BAS70E6433HTMA1; BAS70LT1G; MMBD701LT1G; NSVBAS70LT1G) are preferred for applications requiring regulatory adherence.

Thermal Performance: BAS70LT1G and NSVBAS70LT1G support operating temperatures to 150°C, matching the original HSMS-2800-TR2G specification. Parts rated to -55°C ~ 125°C are suitable for applications with lower thermal requirements.

Electrical Equivalence: BAS70,215; BAS70,235; BAS70-7-F; BAS70E6327HTSA1; BAS70E6433HTMA1; BAS70LT1G; and NSVBAS70LT1G provide direct electrical equivalence with 70V rating and 2pF capacitance. MMBD701LT1G offers 70V rating with reduced capacitance (1pF @ 20V, 1MHz) and is suitable for applications where lower capacitance provides performance advantage.

Supply Chain Availability: Inventory levels vary significantly across manufacturers. NXP BAS70,235 offers the highest current stock (269,830 pcs), followed by Diodes Incorporated BAS70-7-F (125,100 pcs) and onsemi NSVBAS70LT1G (41,100 pcs).

Frequently Asked Questions (FAQ)

Q: Can MMBD701LT1G replace HSMS-2800-TR2G directly?

A: MMBD701LT1G is electrically compatible based on 70V peak reverse voltage rating and SOT-23-3 package. However, it differs in capacitance specification (1pF @ 20V, 1MHz versus 2pF @ 0V, 1MHz) and is specified by power dissipation (200 mW) rather than current rating. Use this part only if the lower capacitance characteristic is acceptable for the application.

Q: What is the difference between BAS70,215 and BAS70,235?

A: Both parts are BAS70 base products with identical electrical specifications (70V, 70mA, 2pF capacitance, SOT-23-3 package). BAS70,215 is supplied by Nexperia in Tape & Reel packaging, while BAS70,235 is supplied by NXP in Bulk packaging. Selection depends on assembly process requirements and packaging preference.

Q: Are all substitute parts RoHS compliant?

A: Seven of nine substitute parts carry explicit ROHS3 compliance certification. BAS70,235 and NSVBAS70LT1G do not specify RoHS status in the provided data. Verify RoHS compliance requirements with the component supplier if regulatory compliance is mandatory.

Q: Which substitute part has the widest operating temperature range?

A: BAS70LT1G and NSVBAS70LT1G both support -55°C to 150°C operating temperature range, matching the original HSMS-2800-TR2G maximum junction temperature of 150°C. Other active substitutes are rated to -55°C ~ 125°C.

Q: Can I use parts with different current ratings?

A: Yes. The original HSMS-2800-TR2G is rated for 1A maximum current. All substitute parts rated at 70mA average rectified current meet this requirement with significant margin. Current rating is not a limiting factor for substitution.

Q: What packaging options are available for these substitutes?

A: All substitute parts use TO-236-3, SC-59, or SOT-23-3 package designations, which are mechanically and electrically equivalent. Packaging format (Tape & Reel, Bulk, Cut Tape) affects supply chain logistics but not electrical compatibility.

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