CURN102-HF Equivalent & Substitute Parts Reference

Part Overview

The CURN102-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount 1206/SOD-123 package. This component is classified as Active product status and complies with RoHS3 and REACH requirements. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this diode category, ensuring functional interchangeability in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 1 A	V
Reverse Recovery Time (trr)	50	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Capacitance @ Vr, F	10 @ 4V, 1MHz	pF
Operating Temperature - Junction	-65 to 175	°C
Package / Case	2-SMD, No Lead (1206/SOD-123)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the CURN102-HF are identified based on strict equivalence of the following critical parameters:

Voltage Rating: DC reverse voltage of 400 V (maximum)
Current Rating: Average rectified current of 1 A
Forward Voltage Drop: 1.7 V maximum at 1 A forward current
Recovery Characteristics: Fast recovery classification with reverse recovery time of 50 ns
Package Configuration: 2-SMD, No Lead surface mount package (1206/SOD-123)
Operating Temperature Range: -65°C to 175°C junction temperature
Compliance Standards: RoHS3 compliance and REACH unaffected status

The ACURN102-HF meets all these criteria and is classified as a parametric equivalent. Additional qualifications such as AEC-Q101 automotive certification and specified reverse leakage current do not disqualify it from substitution; these represent enhanced specifications within the same functional category.

Parameter Comparison

Parameter	CURN102-HF	ACURN102-HF	Match Status
Manufacturer	Comchip Technology	Comchip Technology	Identical
Category	Diodes, Rectifiers	Diodes, Rectifiers	Identical
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	Identical
Current - Average Rectified (Io)	1 A	1 A	Identical
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 1 A	1.7 V @ 1 A	Identical
Reverse Recovery Time (trr)	50 ns	50 ns	Identical
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Identical
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	Identical
Package / Case	2-SMD, No Lead (1206/SOD-123)	2-SMD, No Lead (1206/SOD-123)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature - Junction	-65°C to 175°C	-65°C to 175°C	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical

Engineering Selection Recommendations

Both CURN102-HF and ACURN102-HF are Active product status components manufactured by Comchip Technology with identical electrical and mechanical specifications. Selection between these parts is based on the following factors:

CURN102-HF is suitable for general-purpose applications requiring a 400 V, 1 A fast recovery rectifier diode with standard industrial compliance.

ACURN102-HF is suitable for applications requiring automotive-grade qualification. This part carries AEC-Q101 certification and includes specified reverse leakage current (5 µA @ 400 V), indicating enhanced quality assurance and reliability screening typical of automotive supply chains. Both parts maintain identical core electrical parameters and package configuration.

Both parts comply with RoHS3 and REACH requirements, carry MSL 1 (Unlimited) moisture sensitivity classification, and operate across the -65°C to 175°C junction temperature range. Selection should be based on application requirements and supply chain specifications rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can ACURN102-HF replace CURN102-HF in existing designs?

A: Yes. The ACURN102-HF maintains identical electrical parameters (400 V reverse voltage, 1 A current rating, 1.7 V forward voltage drop, 50 ns recovery time) and package configuration (1206/SOD-123 surface mount). No circuit redesign is required.

Q: What is the difference between CURN102-HF and ACURN102-HF?

A: The primary difference is qualification level. ACURN102-HF carries AEC-Q101 automotive certification and includes specified reverse leakage current (5 µA @ 400 V). Both parts share identical core electrical specifications and package type.

Q: Are the packages physically identical?

A: Yes. Both parts use the 2-SMD, No Lead surface mount package (1206/SOD-123). PCB footprints and reflow soldering profiles are identical.

Q: Do both parts meet RoHS and REACH compliance?

A: Yes. Both CURN102-HF and ACURN102-HF are ROHS3 Compliant and REACH Unaffected.

Q: What is the operating temperature range for both parts?

A: Both parts operate across a junction temperature range of -65°C to 175°C.

Q: Can these parts be used interchangeably in high-reliability applications?

A: ACURN102-HF is recommended for high-reliability and automotive applications due to AEC-Q101 qualification. CURN102-HF is suitable for standard industrial applications. Selection depends on application requirements and supply chain specifications.

Q: What is the moisture sensitivity classification?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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