BYG22AHM3_A/I Equivalent & Substitute Parts

Part Overview

The BYG22AHM3_A/I is an avalanche diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as active and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative part numbers within the same product family.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A
Reverse Recovery Time (trr)	25 ns
Current - Reverse Leakage @ Vr	1 µA @ 50 V
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Avalanche
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BYG22AHM3_A/I are determined by strict equivalence across the following critical parameters:

Voltage Rating: 50 V DC reverse voltage (Vr)
Current Rating: 2 A average rectified current (Io)
Forward Voltage: 1.1 V maximum at 2 A
Reverse Recovery Time: 25 ns
Reverse Leakage Current: 1 µA at 50 V
Package Type: DO-214AC (SMA) surface mount
Operating Temperature Range: -55°C to 150°C
Technology: Avalanche diode classification
Regulatory Compliance: ROHS3 compliance and REACH unaffected status

All identified substitute parts maintain identical electrical specifications and mechanical compatibility. Differences in part numbering reflect manufacturing code variations, packaging format designations, or qualification tracking within the Vishay BYG22 product family.

Parameter Comparison

Parameter	BYG22AHM3_A/I	BYG22A-E3/TR	BYG22AHE3_A/H
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Technology	Avalanche	Avalanche	Avalanche
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	1.1 V @ 2 A	1.1 V @ 2 A
Reverse Recovery Time (trr)	25 ns	25 ns	25 ns
Current - Reverse Leakage @ Vr	1 µA @ 50 V	1 µA @ 50 V	1 µA @ 50 V
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active
Base Product Number	BYG22	BYG22	BYG22

Engineering Selection Recommendations

All three part numbers—BYG22AHM3_A/I, BYG22A-E3/TR, and BYG22AHE3_A/H—are active products from Vishay General Semiconductor - Diodes Division with identical electrical and mechanical specifications. Selection between these alternatives is based on the following factors:

Automotive Grade Qualification: BYG22AHM3_A/I and BYG22AHE3_A/H carry automotive-grade designation with AEC-Q101 qualification. BYG22A-E3/TR does not specify automotive-grade qualification. For applications requiring automotive compliance, BYG22AHM3_A/I or BYG22AHE3_A/H are appropriate selections.

Inventory Availability: BYG22A-E3/TR maintains the highest inventory level at 30,200 pieces. BYG22AHE3_A/H has 4,528 pieces available. BYG22AHM3_A/I has 906 pieces in stock. Inventory status influences lead time and supply chain considerations.

Regulatory Compliance: All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.

Packaging Designation: BYG22A-E3/TR explicitly designates tape and reel (TR) packaging format in the part number. BYG22AHM3_A/I and BYG22AHE3_A/H use alternative coding conventions for packaging designation but maintain identical DO-214AC (SMA) surface mount package specifications.

Frequently Asked Questions (FAQ)

Q: Can BYG22A-E3/TR be used in place of BYG22AHM3_A/I in automotive applications?

A: BYG22A-E3/TR does not carry automotive-grade qualification or AEC-Q101 certification. For applications requiring automotive compliance, use BYG22AHM3_A/I or BYG22AHE3_A/H instead.

Q: Are the electrical characteristics identical across all three part numbers?

A: Yes. All three parts share identical voltage ratings (50 V), current ratings (2 A), forward voltage (1.1 V @ 2 A), reverse recovery time (25 ns), and reverse leakage current (1 µA @ 50 V).

Q: What is the difference between BYG22AHM3_A/I and BYG22AHE3_A/H?

A: Both parts are automotive-grade with AEC-Q101 qualification and identical electrical specifications. The difference lies in manufacturing code designation and inventory availability. BYG22AHE3_A/H has higher inventory (4,528 pieces vs. 906 pieces).

Q: Are all three parts surface mount compatible?

A: Yes. All three parts use DO-214AC (SMA) surface mount package with identical mechanical dimensions and mounting specifications.

Q: Do these parts require special handling for moisture sensitivity?

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

Q: Are there any temperature operating range differences?

A: No. All three parts operate across the identical junction temperature range of -55°C to 150°C.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided automotive qualification requirements are met. For non-automotive applications, all three parts are mechanically and electrically interchangeable. For automotive applications, use BYG22AHM3_A/I or BYG22AHE3_A/H.

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