AS1K-HF General Purpose Rectifier Diode 800V 1A DO-214AC Equivalent & Substitute Parts

Part Overview

The AS1K-HF is a general purpose rectifier diode manufactured by Comchip Technology, rated for 800V DC reverse voltage and 1A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and meets automotive grade requirements with AEC-Q101 qualification. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to support procurement flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 800 V
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the AS1K-HF are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 800 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Speed: Standard Recovery >500ns, > 200mA (Io)
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these core electrical specifications and mechanical requirements. Variations in reverse leakage current (5 µA to 10 µA @ 800 V) and capacitance parameters remain within acceptable tolerances for general purpose rectification applications. Product status and automotive qualification are noted where applicable to support design and procurement decisions.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Ir @ Vr [µA]	Package	Product Status	Grade	AEC-Q101
AS1K-HF	Comchip Technology	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	Automotive	Yes
S1K-HF	Comchip Technology	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	—	—
GS1K_R1_00001	Panjit International Inc.	800	1	1.1 @ 1 A	1 @ 800 V	DO-214AC, SMA	Active	—	—
NRVA4006T3G	onsemi	800	1	1.1 @ 1 A	10 @ 800 V	DO-214AC, SMA	Not For New Designs	Automotive	Yes
S1K	YAGEO	800	1	1.1	—	DO-214AC	Active	—	—
S1K-E3/5AT	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	—	—
S1K-E3/61T	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	—	—
S1KHE3_A/I	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	Automotive	Yes
S1KHM3_A/H	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	5 @ 800 V	DO-214AC, SMA	Active	Automotive	Yes

Engineering Selection Recommendations

For Active Product Designs: Parts with Active product status are suitable for new designs and ongoing production. S1K-HF (Comchip Technology), GS1K_R1_00001 (Panjit International Inc.), S1K (YAGEO), S1K-E3/5AT, S1K-E3/61T, S1KHE3_A/I, and S1KHM3_A/H all maintain Active status and meet ROHS3 compliance with MSL 1 (Unlimited) moisture sensitivity.

For Automotive Applications: When automotive grade and AEC-Q101 qualification are required, select from: AS1K-HF, S1KHE3_A/I, or S1KHM3_A/H. These parts carry explicit automotive grade designation and AEC-Q101 qualification. NRVA4006T3G also carries automotive grade and AEC-Q101 qualification but is marked "Not For New Designs" and should be used only for legacy product support or replacement applications.

For General Purpose Applications: All substitute parts meet the core electrical specifications (800V, 1A, 1.1V forward voltage) and surface mount DO-214AC packaging requirements. Selection may be based on inventory availability, packaging format (Tape & Reel vs. Cut Tape & Digi-Reel), or manufacturer preference.

Reverse Leakage Consideration: GS1K_R1_00001 exhibits lower reverse leakage (1 µA @ 800 V) compared to the main part (5 µA @ 800 V). NRVA4006T3G exhibits higher reverse leakage (10 µA @ 800 V). These variations remain within acceptable limits for standard rectification but should be evaluated if leakage-sensitive circuit performance is critical.

Frequently Asked Questions (FAQ)

Q: Can S1K-E3/61T be used as a direct replacement for AS1K-HF? A: Yes. Both parts share identical electrical specifications (800V, 1A, 1.1V forward voltage) and the same DO-214AC (SMA) surface mount package. S1K-E3/61T is manufactured by Vishay General Semiconductor - Diodes Division and maintains Active product status with ROHS3 compliance.

Q: What is the difference between S1K-HF and AS1K-HF? A: Both are manufactured by Comchip Technology with identical electrical ratings (800V, 1A, 1.1V forward voltage) and DO-214AC packaging. The primary difference is packaging format: AS1K-HF is supplied in Tape & Reel (TR), while S1K-HF is available in Cut Tape (CT) & Digi-Reel format. Electrical performance is equivalent.

Q: Is NRVA4006T3G suitable for new designs? A: NRVA4006T3G is marked "Not For New Designs" by onsemi. While it meets all electrical specifications and carries automotive grade with AEC-Q101 qualification, it should be reserved for legacy product support, replacement applications, or existing inventory utilization. For new designs, select from parts with Active product status.

Q: Does GS1K_R1_00001 have lower leakage than AS1K-HF? A: Yes. GS1K_R1_00001 exhibits reverse leakage of 1 µA @ 800 V, compared to 5 µA @ 800 V for AS1K-HF. Both values are acceptable for general purpose rectification. The lower leakage of GS1K_R1_00001 may provide marginal benefit in leakage-sensitive applications but does not affect standard rectifier functionality.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory compliance of the AS1K-HF.

Q: What packaging options are available for these substitute parts? A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. Verify packaging format during procurement to ensure compatibility with assembly equipment and handling requirements.

Q: Which substitute parts carry automotive qualification? A: AS1K-HF, NRVA4006T3G, S1KHE3_A/I, and S1KHM3_A/H carry automotive grade designation with AEC-Q101 qualification. These parts are suitable for automotive applications requiring formal qualification documentation.

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