ACURB203-HF Equivalent & Substitute Parts Reference

Part Overview

The ACURB203-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 DO-214AA (SMB) package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 2 A
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the ACURB203-HF are identified based on strict electrical and mechanical parameter compatibility within the general-purpose rectifier diode category. The substitution logic is based on the following criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: -55°C to 150°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Secondary Compatibility Parameters:

Current - Average Rectified (Io): 2 A (exact match) or lower current rating with design margin verification
Voltage - Forward (Vf) (Max) @ If: 1 V @ rated current (equal or lower)
Reverse Recovery Time (trr): 50 ns (equal or faster)
Current - Reverse Leakage @ Vr: 5 µA @ 200 V (equal or lower)

Substitute parts must maintain all primary parameters exactly and satisfy secondary parameters within acceptable engineering tolerances for rectifier diode applications.

Parameter Comparison

Parameter	ACURB203-HF (Comchip)	HS2D (SURGE)	UF2D_R1_00001 (Panjit)
Manufacturer	Comchip Technology	SURGE	Panjit International Inc.
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	2 A	1.5 A	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A	1 V @ 1.5 A	1 V @ 2 A
Reverse Recovery Time (trr)	50 ns	50 ns	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	1 µA @ 200 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz	28 pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

ACURB203-HF (Primary Component)

The ACURB203-HF is the primary reference part with Active product status, AEC-Q101 automotive qualification, and ROHS3 compliance. This part is suitable for applications requiring automotive-grade rectification at 200 V, 2 A with fast recovery characteristics.

UF2D_R1_00001 (Panjit International Inc.) - Full Electrical Equivalent

The UF2D_R1_00001 is a direct electrical equivalent to the ACURB203-HF. Both parts share identical voltage ratings (200 V), current ratings (2 A), forward voltage characteristics (1 V @ 2 A), and recovery time (50 ns). The UF2D_R1_00001 demonstrates superior reverse leakage performance (1 µA versus 5 µA @ 200 V). Both parts are ROHS3 compliant with MSL 1 rating and identical operating temperature range (-55 to 150°C). The UF2D_R1_00001 is supplied in Tape & Reel packaging with 1962 units in stock.

HS2D (SURGE) - Parametric Equivalent with Current Derating

The HS2D is a parametric equivalent with identical voltage rating (200 V) and package type (DO-214AA, SMB). The HS2D is rated for 1.5 A average rectified current, which is lower than the ACURB203-HF specification of 2 A. The HS2D maintains identical reverse recovery time (50 ns), reverse leakage current (5 µA @ 200 V), and operating temperature range (-55 to 150°C). The HS2D is ROHS3 compliant with MSL 1 rating. Selection of the HS2D requires verification that the application circuit can operate within the 1.5 A current limitation. The HS2D is supplied in Bag packaging with 15200 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the HS2D replace the ACURB203-HF in all applications?

A: The HS2D is a parametric equivalent in voltage, package, and temperature specifications. However, the HS2D is rated for 1.5 A average rectified current compared to the ACURB203-HF rating of 2 A. Substitution is valid only when the application circuit operates at or below 1.5 A. Circuit analysis is required to confirm current requirements do not exceed the HS2D rating.

Q: Is the UF2D_R1_00001 a direct replacement for the ACURB203-HF?

A: Yes. The UF2D_R1_00001 matches all primary electrical parameters: 200 V reverse voltage, 2 A average rectified current, 1 V forward voltage @ 2 A, and 50 ns reverse recovery time. Both parts share identical package (DO-214AA, SMB), operating temperature range (-55 to 150°C), and compliance status (ROHS3, MSL 1). The UF2D_R1_00001 offers improved reverse leakage performance (1 µA versus 5 µA @ 200 V).

Q: What is the significance of the DO-214AA (SMB) package specification?

A: The DO-214AA, also designated SMB (Surface Mount Body), is the mechanical and electrical interface standard for these components. All substitute parts must use this identical package to ensure compatibility with printed circuit board layouts, solder reflow processes, and thermal management designs. Package mismatch prevents direct substitution.

Q: Are all substitute parts automotive qualified?

A: The ACURB203-HF carries AEC-Q101 automotive qualification. The substitute parts HS2D and UF2D_R1_00001 are listed as Active product status with ROHS3 compliance and MSL 1 rating. Automotive qualification status for substitute parts is not specified in the provided data. Applications requiring explicit AEC-Q101 qualification should confirm this requirement with the component supplier.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. Components rated MSL 1 do not require desiccant packaging or controlled storage conditions. All three parts (ACURB203-HF, HS2D, and UF2D_R1_00001) share this MSL 1 classification.

Q: How do reverse recovery time specifications affect substitution?

A: All three parts specify 50 ns reverse recovery time with fast recovery characteristics (≤500 ns, >200 mA). Identical reverse recovery time ensures equivalent switching performance in rectification circuits. Faster recovery times are acceptable substitutes; slower recovery times are not.

Q: What inventory considerations apply to these substitute parts?

A: The ACURB203-HF has 794 units in stock (Tape & Reel). The UF2D_R1_00001 has 1962 units in stock (Tape & Reel). The HS2D has 15200 units in stock (Bag packaging). Packaging format differences (Tape & Reel versus Bag) may affect procurement processes and automated assembly compatibility.

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