HSMP-3812-TR2G RF PIN Diode Equivalent & Substitute Parts

Part Overview

The HSMP-3812-TR2G is an RF PIN diode manufactured by Broadcom Limited, classified as a 1 Pair Series Connection PIN diode rated for 100V peak reverse voltage and 1A maximum current in a SOT-23-3 package. This component is designated as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Diode Type	PIN - 1 Pair Series Connection
Voltage - Peak Reverse (Max)	100V
Current - Max	1 A
Capacitance @ Vr, F	0.35pF @ 50V, 1MHz
Resistance @ If, F	3Ohm @ 100mA, 100MHz
Package / Case	TO-236-3, SC-59, SOT-23-3
Operating Temperature	150°C (TJ)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the HSMP-3812-TR2G is determined by the following criteria:

Primary Compatibility Requirements:

Diode Type: PIN - 1 Pair Series Connection (mandatory)
Package / Case: TO-236-3, SC-59, SOT-23-3 (mandatory for mechanical fit)
Voltage - Peak Reverse (Max): Equal to or greater than 100V
Current - Max: Equal to or greater than 1A (or application-specific requirement)
Capacitance and Resistance characteristics: Within acceptable operating range for RF applications

Substitution Logic: Substitute parts are grouped by voltage rating capability. Parts rated at 100V or higher with matching package specifications and PIN diode configuration are considered direct substitutes. Parts with higher voltage ratings (150V, 200V) provide enhanced margin and are suitable for applications not requiring the full 1A current specification. Parts with lower voltage ratings (50V) are suitable only for applications operating below their rated voltage threshold.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Max	Capacitance @ Vr, F	Resistance @ If, F	Power Dissipation (Max)	Package / Case	Product Status
HSMP-3812-TR2G	Broadcom Limited	100V	1 A	0.35pF @ 50V, 1MHz	3Ohm @ 100mA, 100MHz	-	TO-236-3, SC-59, SOT-23-3	Obsolete
1SV267-TB-E	onsemi	50V	50 mA	0.23pF @ 50V, 1MHz	2.5Ohm @ 10mA, 100MHz	150 mW	TO-236-3, SC-59, SOT-23-3	Obsolete
BAR66E6327HTSA1	Infineon Technologies	150V	200 mA	0.6pF @ 35V, 1MHz	1.8Ohm @ 5mA, 100MHz	250 mW	TO-236-3, SC-59, SOT-23-3	Active
SMP1307-005LF	Skyworks Solutions Inc.	200V	-	0.3pF @ 30V, 1MHz	3Ohm @ 100mA, 100MHz	250 mW	TO-236-3, SC-59, SOT-23-3	Active
SMP1352-005LF	Skyworks Solutions Inc.	200V	-	0.35pF @ 20V, 1MHz	1.35Ohm @ 100mA, 100MHz	250 mW	TO-236-3, SC-59, SOT-23-3	Active

Engineering Selection Recommendations

For Active Product Status Priority: BAR66E6327HTSA1 (Infineon Technologies) and SMP1307-005LF or SMP1352-005LF (Skyworks Solutions Inc.) are recommended as primary substitutes. All three parts are in active production status, ensuring long-term availability and supply chain stability. Both Infineon and Skyworks components carry RoHS3 compliance certification.

For Voltage Margin Applications: SMP1307-005LF and SMP1352-005LF provide 200V peak reverse voltage rating, offering 100V additional margin above the original HSMP-3812-TR2G specification. These parts are suitable for designs requiring enhanced voltage headroom.

For Balanced Performance: BAR66E6327HTSA1 provides 150V peak reverse voltage with 200mA maximum current and lower forward resistance (1.8Ohm @ 5mA), making it suitable for applications requiring moderate voltage margin with improved RF performance characteristics.

Not Recommended: 1SV267-TB-E is not recommended as a direct substitute due to its 50V maximum voltage rating, which falls below the original 100V specification. This part is suitable only for applications specifically designed for 50V operation.

Frequently Asked Questions (FAQ)

Q: Can SMP1307-005LF or SMP1352-005LF be used as direct replacements for HSMP-3812-TR2G? A: Yes, both Skyworks parts are direct mechanical and functional substitutes. They share the SOT-23-3 package and PIN diode configuration. The 200V voltage rating exceeds the original 100V specification, providing additional design margin. Forward resistance characteristics are comparable at 100mA operation.

Q: What is the difference between SMP1307-005LF and SMP1352-005LF? A: Both parts are rated for 200V and 250mW with SOT-23-3 packaging. SMP1352-005LF exhibits lower forward resistance (1.35Ohm @ 100mA) compared to SMP1307-005LF (3Ohm @ 100mA), making it preferable for applications prioritizing lower insertion loss. Capacitance characteristics differ slightly: SMP1307 at 0.3pF @ 30V versus SMP1352 at 0.35pF @ 20V.

Q: Is BAR66E6327HTSA1 suitable for applications requiring 1A current? A: BAR66E6327HTSA1 is rated for 200mA maximum current, which is below the original 1A specification. This part is suitable for applications operating at or below 200mA. For applications requiring full 1A capability, SMP1307-005LF or SMP1352-005LF should be evaluated based on their current handling requirements.

Q: Why is 1SV267-TB-E listed as a substitute if it has only 50V rating? A: 1SV267-TB-E is included in the substitute list for applications where the design operating voltage is 50V or below. It is not a general replacement for the full 100V specification of HSMP-3812-TR2G.

Q: Are all substitute parts RoHS compliant? A: BAR66E6327HTSA1, SMP1307-005LF, and SMP1352-005LF are RoHS3 compliant. 1SV267-TB-E carries RoHS3 compliance. All parts have MSL rating of 1 (Unlimited) and REACH Unaffected status.

Q: What packaging options are available for these substitutes? A: All substitute parts are available in SOT-23-3 package configuration. Packaging formats vary: SMP1307-005LF is available in Cut Tape (CT), SMP1352-005LF in Tape & Reel (TR), BAR66E6327HTSA1 in Tape & Reel (TR), and 1SV267-TB-E in Cut Tape (CT) & Digi-Reel.

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