VS-MBRB1645TRLPBF Equivalent & Substitute Parts

Part Overview

The VS-MBRB1645TRLPBF is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 45 V DC reverse voltage and 16 A average rectified current in a surface mount TO-263AB (D2PAK) package. This part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement. The device is qualified to AEC-Q101 automotive standards and complies with RoHS3 and REACH regulations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	45	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200 µA @ 45 V	µA
Capacitance @ Vr, F	1400	pF @ 5V, 1MHz
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the VS-MBRB1645TRLPBF is determined by equivalence across the following critical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io): 16 A
Voltage - Forward (Vf) (Max) @ If: 630 mV @ 16 A
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitution Categories:

Direct Manufacturer Equivalent: VS-MBRB1645TRL-M3 is a direct equivalent from the same manufacturer (Vishay) with identical electrical specifications and packaging. This part is currently active in production.

Parametric Equivalent (Same Manufacturer): MBRB1645 is a parametric equivalent from Vishay with matching electrical characteristics but classified as obsolete. This part maintains all critical electrical parameters.

Parametric Equivalent (Alternative Manufacturer): MBRS1645 MNG and MBRS1645HMNG are parametric equivalents manufactured by Taiwan Semiconductor Corporation. Both maintain the 45 V, 16 A rating and TO-263AB package. The MBRS1645HMNG variant includes automotive grade and AEC-Q101 qualification matching the original part.

Parameter Comparison

Parameter	VS-MBRB1645TRLPBF	VS-MBRB1645TRL-M3	MBRB1645	MBRS1645 MNG	MBRS1645HMNG
Manufacturer	Vishay	Vishay	Vishay	Taiwan Semiconductor	Taiwan Semiconductor
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V	45 V
Current - Average Rectified (Io)	16 A	16 A	16 A	16 A	16 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	200 µA @ 45 V	200 µA @ 35 V	200 µA @ 45 V	500 µA @ 45 V	500 µA @ 45 V
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Grade	Automotive	—	—	—	Automotive
Qualification	AEC-Q101	—	—	—	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Obsolete	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Preferred): VS-MBRB1645TRL-M3 is the recommended direct substitute. This part is manufactured by Vishay, the original manufacturer of the VS-MBRB1645TRLPBF, and maintains identical electrical specifications and packaging. The part is currently active in production with 877 units in stock. RoHS3 compliance is maintained. This selection eliminates any design re-qualification requirements.

For Automotive Applications Requiring AEC-Q101 Qualification: MBRS1645HMNG from Taiwan Semiconductor Corporation is suitable for automotive applications. This part carries AEC-Q101 qualification and automotive grade designation, matching the original part's qualification status. It maintains all critical electrical parameters and RoHS3 compliance. The reverse leakage current specification differs (500 µA @ 45 V versus 200 µA @ 45 V), which must be evaluated against circuit requirements.

For General-Purpose Applications: MBRS1645 MNG from Taiwan Semiconductor Corporation provides parametric equivalence with active product status and RoHS3 compliance. This part is suitable for non-automotive applications where AEC-Q101 qualification is not required. The reverse leakage current specification is 500 µA @ 45 V.

Not Recommended: MBRB1645 from Vishay is classified as obsolete and carries RoHS non-compliant status. This part should not be selected for new designs or long-term procurement.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB1645TRL-M3 be used as a direct replacement for VS-MBRB1645TRLPBF?

A: Yes. VS-MBRB1645TRL-M3 is a direct equivalent manufactured by Vishay with identical electrical specifications (45 V, 16 A, 630 mV forward voltage, fast recovery speed), identical package (TO-263AB D2PAK), and matching RoHS3 compliance. The primary difference is product status: VS-MBRB1645TRL-M3 is active in production while the original part is discontinued.

Q: What is the difference between MBRS1645 MNG and MBRS1645HMNG?

A: Both parts are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications. The key difference is that MBRS1645HMNG includes automotive grade designation and AEC-Q101 qualification, making it suitable for automotive applications. MBRS1645 MNG lacks these qualifications and is intended for general-purpose applications.

Q: Why does the reverse leakage current differ between substitute parts?

A: The VS-MBRB1645TRLPBF and MBRB1645 specify 200 µA @ 45 V reverse leakage, while MBRS1645 MNG and MBRS1645HMNG specify 500 µA @ 45 V. This difference reflects manufacturing process variations between Vishay and Taiwan Semiconductor Corporation. Circuit designers must evaluate whether the higher leakage specification of the Taiwan Semiconductor parts is acceptable for the intended application.

Q: Is the operating temperature range difference significant?

A: The VS-MBRB1645TRLPBF operates from -55°C to 150°C junction temperature. VS-MBRB1645TRL-M3 and MBRB1645 extend the lower limit to -65°C. For most applications operating within the -55°C to 150°C range, this difference is not significant. Applications requiring operation below -55°C should select VS-MBRB1645TRL-M3 or MBRB1645.

Q: Can MBRB1645 be used despite its obsolete status?

A: MBRB1645 is classified as obsolete and carries RoHS non-compliant status. While 2230 units are currently in stock, this part should not be selected for new designs. For existing designs currently using this part, transition to an active equivalent such as VS-MBRB1645TRL-M3 or MBRS1645HMNG is recommended.

Q: Are all substitute parts qualified for automotive applications?

A: No. Only VS-MBRB1645TRLPBF (original), VS-MBRB1645TRL-M3, and MBRS1645HMNG carry automotive grade and AEC-Q101 qualification. MBRS1645 MNG and MBRB1645 are not automotive qualified. For automotive applications, select only parts with explicit AEC-Q101 qualification.

Q: What is the significance of the TO-263AB package designation?

A: All substitute parts use the TO-263-3 D2PAK package with identical pinout and thermal characteristics. This ensures mechanical and thermal compatibility without PCB redesign. The package includes two leads plus a thermal tab for heat dissipation.

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