RS2DB-HF Equivalent & Substitute Parts

Part Overview

The RS2DB-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount SMB/DO-214AA package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when electrical parameters, mechanical packaging, and thermal characteristics align within the specified tolerances for this diode category, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 2 A	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5 @ 200 V	µA
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the RS2DB-HF are identified based on strict equivalence of the following electrical and mechanical parameters:

Reverse Voltage Rating: 200 V maximum
Forward Current Rating: 2 A average rectified
Forward Voltage Drop: 1.3 V maximum at 2 A
Reverse Recovery Time: 150 ns (Fast Recovery classification)
Reverse Leakage Current: 5 µA at 200 V
Package Type: DO-214AA/SMB surface mount
Operating Temperature Range: -55°C to 150°C junction temperature
Compliance: RoHS3 compliant

The RS2D manufactured by Taiwan Semiconductor Corporation meets all specified electrical parameters and mechanical packaging requirements, qualifying it as a parametric equivalent for direct substitution in applications requiring RS2DB-HF functionality.

Parameter Comparison

Parameter	RS2DB-HF (Comchip)	RS2D (Taiwan Semiconductor)	Match Status
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	Equivalent
Current - Average Rectified (Io)	2 A	2 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	1.3 V @ 2 A	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Equivalent
Reverse Recovery Time (trr)	150 ns	150 ns	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	Equivalent
Capacitance @ Vr, F	28 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz	Within tolerance
Package / Case	DO-214AA, SMB	DO-214AA, SMB	Equivalent
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Both the RS2DB-HF and RS2D are Active product status components with identical electrical ratings and mechanical packaging specifications. Selection between these parts is based on the following engineering criteria:

RS2DB-HF (Comchip Technology): Select when Comchip Technology supply chain or specific manufacturer qualification is required. Current inventory: 1,056 pieces.

RS2D (Taiwan Semiconductor Corporation): Select as the primary substitute when Taiwan Semiconductor Corporation sourcing is preferred or when higher inventory availability is advantageous. Current inventory: 17,200 pieces. This part carries REACH Unaffected status in addition to RoHS3 compliance.

Both parts are classified as Fast Recovery diodes with identical reverse recovery time (150 ns) and support the same operating temperature range (-55°C to 150°C junction). The minor difference in junction capacitance (28 pF versus 50 pF at 4V, 1MHz) does not affect substitution eligibility for standard rectification applications. Both components are rated for surface mount assembly in DO-214AA/SMB packages and carry unlimited moisture sensitivity classification (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can RS2D replace RS2DB-HF in all applications?

A: Yes. The RS2D meets all electrical and mechanical specifications of the RS2DB-HF, including reverse voltage rating (200 V), forward current rating (2 A), forward voltage drop (1.3 V @ 2 A), reverse recovery time (150 ns), and package type (DO-214AA/SMB). Both components operate across the same temperature range (-55°C to 150°C) and carry equivalent compliance certifications.

Q: What is the difference in capacitance between these parts?

A: The RS2DB-HF has a junction capacitance of 28 pF at 4V, 1MHz, while the RS2D has 50 pF at the same conditions. This difference does not affect substitution for general-purpose rectification applications. Capacitance becomes a selection criterion only in high-frequency switching circuits where junction capacitance directly impacts switching performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RS2DB-HF and RS2D are RoHS3 compliant. The RS2D additionally carries REACH Unaffected status.

Q: What is the package type for both parts?

A: Both parts use the DO-214AA package, also designated as SMB (Surface Mount Body). This is a surface mount package suitable for automated assembly on printed circuit boards.

Q: What is the reverse recovery time specification?

A: Both parts have a reverse recovery time (trr) of 150 nanoseconds, classifying them as Fast Recovery diodes. This specification applies to switching speeds greater than 200 mA.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts have identical mechanical footprints (DO-214AA/SMB package) and can be used interchangeably on the same printed circuit board without layout modification.

Q: What is the moisture sensitivity level?

A: Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under standard storage conditions without special moisture control requirements.

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