AS1M-HF General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The AS1M-HF is a general purpose rectifier diode manufactured by Comchip Technology, rated for 1000 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters that define rectifier diode functionality: reverse voltage rating, average rectified current, forward voltage drop, recovery speed characteristics, and surface mount package compatibility.

Key Parameters

Parameter	AS1M-HF Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	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 @ 1000 V
Mounting Type	Surface Mount	-
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the AS1M-HF are grouped based on strict equivalence of the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Speed: Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 5 µA @ 1000 V (or lower)

Mechanical Equivalence Criteria:

Mounting Type: Surface Mount
Package / Case: DO-214AC (SMA) or compatible SMA variants
Operating Temperature - Junction: -55°C to 150°C
Technology: Standard

Compliance Criteria:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts maintain these electrical and mechanical parameters. Variations in capacitance values and reverse recovery time (where specified) do not affect functional substitutability for general purpose rectification applications within the defined parameter envelope.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V)	Reverse Leakage @ Vr (µA)	Package	Product Status	Inventory (Pcs)
AS1M-HF	Comchip Technology	1000	1	1.1 @ 1 A	5 @ 1000 V	DO-214AC, SMA	Active	819
ACGRA4007-HF	Comchip Technology	1000	1	1.1 @ 1 A	5 @ 1000 V	DO-214AC, SMA	Active	58834
CGRA4007-G	Comchip Technology	1000	1	1.1 @ 1 A	5 @ 1000 V	DO-214AC, SMA	Active	52200
S1M-HF	Comchip Technology	1000	1	1.1 @ 1 A	5 @ 1000 V	DO-214AC, SMA	Active	21723
FM4007	Rectron USA	1000	1	1.1 @ 1 A	5 @ 1000 V	DO-214AC, SMA	Active	4600
GS1M_R1_00001	Panjit International Inc.	1000	1	1.1 @ 1 A	1 @ 1000 V	DO-214AC, SMA	Active	17649
GS1MWG_R1_00001	Panjit International Inc.	1000	1	1.1 @ 1 A	1 @ 1000 V	DO-214AC, SMA	Not For New Designs	2507
GT1MMA_R1_00001	Panjit International Inc.	1000	1	1.1 @ 1 A	1 @ 1000 V	DO-214AC, SMA	Active	1712
M7	EVVO Semi	1000	1	1.1 @ 1 A	5 @ 1 kV	DO-221AC, SMA Flat Leads	Active	5693
NRVA4007T3G	onsemi	1000	1	1.1 @ 1 A	10 @ 1000 V	DO-214AC, SMA	Not For New Designs	305400
S1M	EVVO Semi	1000	1	1.1 @ 1 A	5 @ 1 kV	DO-214AC, SMA	Active	5394

Engineering Selection Recommendations

Primary Substitutes (Active Product Status, Recommended for New Designs):

The following parts are direct substitutes with Active product status and full compliance with RoHS3 and MSL requirements:

ACGRA4007-HF (Comchip Technology): Highest inventory availability (58,834 pcs). Identical electrical and mechanical specifications to AS1M-HF. Tape & Reel packaging.
CGRA4007-G (Comchip Technology): High inventory availability (52,200 pcs). Identical electrical and mechanical specifications. Tape & Reel packaging.
S1M-HF (Comchip Technology): Same manufacturer as main part. Identical specifications. Cut Tape & Digi-Reel packaging (21,723 pcs).
GS1M_R1_00001 (Panjit International Inc.): Active status. Reverse leakage specification of 1 µA @ 1000 V is superior to the 5 µA specification of AS1M-HF, providing enhanced performance margin. Tape & Reel packaging (17,649 pcs).
GT1MMA_R1_00001 (Panjit International Inc.): Active status. Reverse leakage 1 µA @ 1000 V. Reverse recovery time specified at 2 µs. Tape & Reel packaging (1,712 pcs).
FM4007 (Rectron USA): Active status. Identical electrical specifications. Automotive grade with AEC-Q101 qualification. Tape & Reel packaging (4,600 pcs).
S1M (EVVO Semi): Active status. Identical electrical specifications. Cut Tape & Digi-Reel packaging (5,394 pcs).

Secondary Substitutes (Not For New Designs):

GS1MWG_R1_00001 (Panjit International Inc.): Product status is "Not For New Designs." Inventory available (2,507 pcs). Use only for legacy system maintenance or repair applications.
NRVA4007T3G (onsemi): Product status is "Not For New Designs." Reverse leakage specification of 10 µA @ 1000 V exceeds the 5 µA specification of AS1M-HF. High inventory (305,400 pcs) available for legacy applications only.

Package Variant:

M7 (EVVO Semi): Active status. Electrical specifications equivalent. Package variant: DO-221AC with SMA Flat Leads (SMAF) instead of standard DO-214AC (SMA). Use only when flat lead package is specifically required by PCB design constraints.

Frequently Asked Questions (FAQ)

Q: Can ACGRA4007-HF be used as a direct replacement for AS1M-HF?

A: Yes. ACGRA4007-HF is a parametric equivalent with identical voltage rating (1000 V), current rating (1 A), forward voltage (1.1 V @ 1 A), and reverse leakage (5 µA @ 1000 V). Both are manufactured by Comchip Technology, carry AEC-Q101 qualification, and are RoHS3 compliant. The primary difference is packaging format: ACGRA4007-HF is supplied in Tape & Reel format while AS1M-HF is supplied in Cut Tape & Digi-Reel format.

Q: What is the difference between GS1M_R1_00001 and AS1M-HF?

A: Both parts meet the core electrical requirements (1000 V, 1 A, 1.1 V forward voltage). GS1M_R1_00001 is manufactured by Panjit International Inc. and specifies a reverse leakage current of 1 µA @ 1000 V, compared to 5 µA @ 1000 V for AS1M-HF. This lower leakage specification represents improved performance characteristics. Both are Active status products with RoHS3 compliance and MSL 1 rating.

Q: Why is NRVA4007T3G marked "Not For New Designs"?

A: NRVA4007T3G carries a "Not For New Designs" product status designation. While it meets the core electrical parameters (1000 V, 1 A, 1.1 V forward voltage), this status indicates the manufacturer (onsemi) has discontinued active development and support for this part number. It should be used only for maintenance or repair of existing systems. For new designs, select from parts with Active product status.

Q: Is the M7 (SMAF package) compatible with AS1M-HF (SMA package)?

A: M7 uses a DO-221AC package with SMA Flat Leads (SMAF), while AS1M-HF uses a standard DO-214AC (SMA) package. These are physically different packages. M7 is electrically equivalent but should only be selected if the PCB footprint specifically accommodates the flat lead variant. Standard SMA packages (AS1M-HF, ACGRA4007-HF, CGRA4007-G, S1M-HF, GS1M_R1_00001, GT1MMA_R1_00001, NRVA4007T3G, S1M) are directly interchangeable on standard SMA footprints.

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

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity limitations. These parts do not require special moisture control during storage, handling, or assembly. Standard warehouse and manufacturing conditions are acceptable.

Q: Can I substitute AS1M-HF with a part that has lower reverse leakage current?

A: Yes. Parts with lower reverse leakage current (such as GS1M_R1_00001 or GT1MMA_R1_00001 at 1 µA @ 1000 V) are functionally superior substitutes for AS1M-HF (5 µA @ 1000 V). Lower leakage current provides improved performance margin and is fully compatible with circuit designs specified for the original part.

Q: What is the significance of "Standard Recovery >500ns, > 200mA (Io)" speed specification?

A: This specification indicates the diode uses standard recovery technology with a recovery time greater than 500 nanoseconds at currents exceeding 200 mA. All identified substitute parts share this same speed classification, confirming they are suitable for general purpose rectification applications where fast recovery is not required. This specification is consistent across all equivalent parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry RoHS3 Compliant status, matching the AS1M-HF specification. This ensures compliance with European Union Restriction of Hazardous Substances regulations.

Q: Which substitute part has the highest inventory availability?

A: NRVA4007T3G (onsemi) has the highest inventory at 305,400 pcs. However, this part carries "Not For New Designs" status. For new designs, ACGRA4007-HF (Comchip Technology) offers the highest inventory among Active status parts at 58,834 pcs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message