HS3AB M4G Equivalent & Substitute Parts

Part Overview

The HS3AB M4G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AA (SMB) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with acceptable parameter variations for the intended application.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Capacitance @ Vr, F	80	pF @ 4V, 1MHz
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

Substitution of the HS3AB M4G is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a maximum DC reverse voltage of 50 V or greater to ensure safe operation within the original design envelope.

Current Rating: The average rectified current capacity must be sufficient for the application. Parts rated at 3 A provide direct equivalence; parts rated at 2 A or 1.5 A are acceptable only where application current requirements do not exceed their ratings.

Package Type: All substitute parts must use the DO-214AA (SMB) surface mount package or compatible package footprint (DO-214AC/SMA for mechanical compatibility with appropriate PCB layout considerations).

Recovery Characteristics: Fast recovery diodes (≤ 500ns) are preferred for switching applications. Standard recovery diodes (> 500ns) represent a functional alternative where switching speed is not critical.

Temperature Range: Operating junction temperature range of -55°C to 150°C is maintained across all listed substitutes.

Compliance: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status consistent with the original part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Speed	trr [ns]	Package	Tj (°C)	Product Status
HS3AB M4G	Taiwan Semiconductor Corporation	50	3	1.0 @ 3A	Fast Recovery ≤ 500ns	50	DO-214AA (SMB)	-55 to 150	Discontinued
HS3AB	Taiwan Semiconductor Corporation	50	3	1.0 @ 3A	Fast Recovery ≤ 500ns	50	DO-214AA (SMB)	-55 to 150	Active
CGRB301-G	Comchip Technology	50	3	1.1 @ 3A	Standard Recovery > 500ns	—	DO-214AA (SMB)	-55 to 150	Active
CGRB201-G	Comchip Technology	50	2	1.1 @ 2A	Standard Recovery > 500ns	—	DO-214AA (SMB)	-55 to 150	Active
CURB201-G	Comchip Technology	50	2	1.0 @ 2A	Fast Recovery ≤ 500ns	50	DO-214AA (SMB)	-55 to 150	Active
ES2A-13-F	Diodes Incorporated	50	2	0.92 @ 2A	Fast Recovery ≤ 500ns	25	DO-214AA (SMB)	-55 to 150	Active
ES2AA-13-F	Diodes Incorporated	50	2	0.92 @ 2A	Fast Recovery ≤ 500ns	25	DO-214AC (SMA)	-55 to 150	Active
ES2AHE3_A/H	Vishay General Semiconductor - Diodes Division	50	2	0.90 @ 2A	Fast Recovery ≤ 500ns	20	DO-214AA (SMB)	-55 to 150	Active
ES2AHE3_A/I	Vishay General Semiconductor - Diodes Division	50	2	0.90 @ 2A	Fast Recovery ≤ 500ns	20	DO-214AA (SMB)	-55 to 150	Active
ES2AHM3/5BT	Vishay General Semiconductor - Diodes Division	50	2	0.90 @ 2A	Fast Recovery ≤ 500ns	30	DO-214AA (SMB)	-55 to 150	Active
RS2A-13-F	Diodes Incorporated	50	1.5	1.3 @ 1.5A	Fast Recovery ≤ 500ns	150	DO-214AC (SMA)	-65 to 150	Active

Engineering Selection Recommendations

Direct Equivalent (Parametric Match):

HS3AB (Tape & Reel packaging) from Taiwan Semiconductor Corporation is the direct parametric equivalent to HS3AB M4G. This part maintains identical electrical specifications including 50 V reverse voltage, 3 A average rectified current, 1 V forward voltage at 3 A, fast recovery characteristics with 50 ns reverse recovery time, and identical operating temperature range. Product status is Active with full availability.

Primary Substitutes (3 A Current Rating):

CGRB301-G from Comchip Technology provides a 3 A rated alternative in DO-214AA (SMB) package with 50 V reverse voltage rating. Forward voltage is 1.1 V at 3 A (0.1 V higher than original), and recovery characteristics are standard (> 500ns) rather than fast recovery. This part is suitable for applications where switching speed is not performance-critical.

Secondary Substitutes (2 A Current Rating):

CURB201-G, ES2A-13-F, ES2AHE3_A/H, ES2AHE3_A/I, and ES2AHM3/5BT are all rated at 2 A average rectified current. These parts are suitable only where application current requirements do not exceed 2 A. All maintain 50 V reverse voltage rating and fast recovery characteristics. CURB201-G and ES2A-13-F provide the closest forward voltage match at 1.0 V and 0.92 V respectively. Vishay parts (ES2AHE3 and ES2AHM3 series) include automotive qualification (AEC-Q101) and lower reverse recovery times (20-30 ns).

Lower Current Alternative (1.5 A Rating):

RS2A-13-F from Diodes Incorporated is rated at 1.5 A and is suitable only for applications with current requirements not exceeding 1.5 A. This part uses DO-214AC (SMA) package, requiring PCB layout verification for mechanical compatibility.

Package Considerations:

ES2AA-13-F and RS2A-13-F use DO-214AC (SMA) package instead of DO-214AA (SMB). While electrically compatible, these require verification of PCB footprint compatibility before selection.

All listed substitutes maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status consistent with regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can HS3AB (Tape & Reel) be used as a direct replacement for HS3AB M4G?

A: Yes. HS3AB in Tape & Reel packaging is the direct parametric equivalent. The difference is packaging format only; electrical and mechanical specifications are identical. Both parts are rated 50 V, 3 A, with 1 V forward voltage at 3 A and 50 ns reverse recovery time.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery time ≤ 500ns, while standard recovery diodes exceed 500ns. Fast recovery diodes are preferred in switching applications to minimize switching losses and EMI. Standard recovery diodes are acceptable in rectification applications where switching speed is not performance-critical.

Q: Can I use a 2 A rated diode in place of the 3 A HS3AB M4G?

A: Only if your application current requirement does not exceed 2 A. Using a lower-rated component in a higher-current application results in excessive junction temperature and reduced component life. Verify actual application current before selecting a 2 A substitute.

Q: What is the significance of forward voltage differences between parts?

A: Forward voltage differences (ranging from 0.90 V to 1.3 V in the substitute list) affect power dissipation and heat generation. Lower forward voltage results in lower power loss. In high-current applications, forward voltage differences become significant for thermal management calculations.

Q: Are Vishay ES2AHE3 and ES2AHM3 parts suitable for automotive applications?

A: ES2AHE3_A/H and ES2AHE3_A/I include AEC-Q101 automotive qualification. ES2AHM3/5BT does not carry automotive qualification designation. Automotive qualification is required only if the application is automotive-grade.

Q: What is the difference between DO-214AA (SMB) and DO-214AC (SMA) packages?

A: Both are surface mount packages with different physical dimensions. DO-214AA (SMB) is larger than DO-214AC (SMA). PCB footprints are not interchangeable without layout modification. Verify footprint compatibility before selecting parts with different package designations.

Q: Why do some parts list reverse recovery time (trr) and others do not?

A: Reverse recovery time is a critical parameter for fast recovery diodes. Standard recovery diodes may not have this parameter specified because it exceeds 500ns. When trr is not specified, the part is classified as standard recovery.

Q: Can I use CGRB301-G as a substitute if my application requires fast recovery characteristics?

A: No. CGRB301-G is rated for standard recovery (> 500ns), not fast recovery. If fast recovery characteristics are required for your application, select from CURB201-G, ES2A-13-F, ES2AHE3 series, ES2AHM3/5BT, or HS3AB.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting use of lead, cadmium, mercury, and other hazardous materials. All listed parts maintain ROHS3 compliance.

Q: Is reverse leakage current important for my selection?

A: Reverse leakage current affects standoff voltage performance and power dissipation in reverse bias conditions. The HS3AB M4G specifies 10 µA at 50 V. Most substitutes specify 5 µA, which is lower and represents improved performance. Higher reverse leakage (if encountered) may affect circuit performance in precision applications.

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