SSB44-M3/52T Equivalent & Substitute Parts

Part Overview

The SSB44-M3/52T is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 4 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as Active and complies with ROHS3 and REACH standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, packaging format preferences, or application-specific qualifications such as automotive grade certifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	4	A
Voltage - Forward (Vf) (Max) @ If	490 mV @ 4 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	400	µA @ 40 V
Technology	Schottky	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SSB44-M3/52T are qualified based on the following criteria:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 4 A
Voltage - Forward (Vf) (Max) @ If: 490 mV @ 4 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 400 µA @ 40 V
Technology: Schottky

Mechanical Parameters (Must Match):

Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Operating Temperature - Junction: -65°C to 150°C

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Packaging Format Variations (Allowed): Substitute parts may differ in packaging format (Tape & Reel, Cut Tape, Digi-Reel®) while maintaining identical electrical and mechanical specifications.

Grade Variations (Allowed): Automotive-grade variants with AEC-Q101 qualification are interchangeable with standard-grade parts in applications where automotive certification is not required, provided all electrical and mechanical parameters remain identical.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Mounting	Tj (Operating)	Grade	Packaging Format	Inventory (Pcs)
SSB44-M3/52T	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Standard	Tape & Reel (TR)	964
SSB44-E3/52T	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Standard	Cut Tape (CT) & Digi-Reel®	56247
SSB44-E3/5BT	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Standard	Tape & Reel (TR)	6685
SSB44-M3/5BT	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Standard	Cut Tape (CT) & Digi-Reel®	12284
SSB44HE3_A/H	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Automotive	Cut Tape (CT)	29850
SSB44HE3_A/I	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Automotive	Cut Tape (CT) & Digi-Reel®	8089
SSB44HM3_A/H	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Automotive	Cut Tape (CT) & Digi-Reel®	8239
SSB44HM3_A/I	Vishay	40 V	4 A	490 mV @ 4 A	≤ 500ns	400 µA @ 40 V	DO-214AA	Surface Mount	-65 to 150°C	Automotive	Cut Tape (CT) & Digi-Reel®	29950

Engineering Selection Recommendations

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the SSB44-M3/52T. Selection among substitutes is determined by the following factors:

Packaging Format Requirements:

Standard Tape & Reel (TR) format: SSB44-M3/52T, SSB44-E3/5BT
Cut Tape (CT) or Digi-Reel® format: SSB44-E3/52T, SSB44-M3/5BT, SSB44HE3_A/H, SSB44HE3_A/I, SSB44HM3_A/H, SSB44HM3_A/I

Automotive Application Requirements:

Standard-grade parts (non-automotive): SSB44-M3/52T, SSB44-E3/52T, SSB44-E3/5BT, SSB44-M3/5BT
Automotive-grade with AEC-Q101 qualification: SSB44HE3_A/H, SSB44HE3_A/I, SSB44HM3_A/H, SSB44HM3_A/I

Inventory Availability:

Highest availability: SSB44-E3/52T (56,247 pcs), SSB44HM3_A/I (29,950 pcs), SSB44HE3_A/H (29,850 pcs)
Limited availability: SSB44-E3/5BT (6,685 pcs), SSB44-M3/52T (964 pcs)

All parts comply with ROHS3 and REACH standards with MSL rating of 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can SSB44-E3/52T replace SSB44-M3/52T in my application?

A: Yes. Both parts are electrically and mechanically identical Schottky rectifier diodes rated for 40 V, 4 A with identical forward voltage, reverse leakage, and operating temperature range. The difference is packaging format: SSB44-E3/52T is supplied in Cut Tape (CT) & Digi-Reel® format, while SSB44-M3/52T is supplied in Tape & Reel (TR) format. Substitution is valid if your assembly equipment accommodates the packaging format.

Q: Are automotive-grade parts (SSB44HE3_A/H, SSB44HM3_A/H, etc.) suitable for non-automotive applications?

A: Yes. Automotive-grade parts with AEC-Q101 qualification meet or exceed the electrical and mechanical specifications of standard-grade parts. They are fully interchangeable in non-automotive applications where the additional qualification is not required.

Q: What is the difference between SSB44HE3_A/H and SSB44HM3_A/H?

A: Both parts are automotive-grade Schottky rectifier diodes with identical electrical specifications (40 V, 4 A, 490 mV forward voltage). The difference is packaging format: SSB44HE3_A/H is supplied in Cut Tape (CT) format, while SSB44HM3_A/H is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical performance is identical.

Q: Can I use SSB44-E3/5BT instead of SSB44-M3/52T?

A: Yes. Both parts are standard-grade Schottky rectifier diodes with identical electrical and mechanical specifications. Both are supplied in Tape & Reel (TR) format. Substitution is direct.

Q: What does the "/52T" and "/5BT" designation indicate?

A: These designations refer to packaging format and reel specifications. Both formats contain identical diodes in DO-214AA (SMB) packages. The difference is in reel configuration and tape specifications. Electrical performance is identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed, including the main part SSB44-M3/52T and all substitutes, are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Can I mix packaging formats in my assembly process?

A: Packaging format compatibility depends on your assembly equipment specifications. Verify that your pick-and-place and tape-feeding equipment supports the specific packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) before substitution.

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