FESB16CT-E3/45 Equivalent & Substitute Parts

Part Overview

The FESB16CT-E3/45 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount device is rated for 150 V DC reverse voltage and 16 A average rectified current in a TO-263AB (D2PAK) package. The part is currently in Last Time Buy status, indicating discontinued production. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for new production runs and ongoing support of existing applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 16 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10 µA @ 150 V	µA
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)	-
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	-

Substitute Part Grouping Explanation

Substitution of the FESB16CT-E3/45 is determined by the following critical parameters:

Mechanical Compatibility:

Package type must be TO-263AB (D2PAK) with identical pinout (2 Leads + Tab)
Surface mount mounting type required

Electrical Compatibility:

Current rating must equal or exceed 16 A average rectified current
Voltage rating must equal or exceed 150 V DC reverse voltage
Forward voltage drop must not exceed 975 mV @ 16 A
Reverse recovery time must not exceed 35 ns
Reverse leakage current must not exceed 10 µA at rated voltage

Operational Compatibility:

Operating temperature range must encompass -65°C to 150°C junction temperature
Technology classification must be Standard

Substitute parts meeting all these criteria are electrically and mechanically interchangeable with the FESB16CT-E3/45 without circuit modification.

Parameter Comparison

Parameter	FESB16CT-E3/45 (Main Part)	FESB16DT-M3/I (Substitute)	Compatibility
Voltage - DC Reverse (Vr) (Max)	150 V	200 V	Compatible - Higher rating
Current - Average Rectified (Io)	16 A	16 A	Compatible - Equal rating
Voltage - Forward (Vf) (Max) @ If	975 mV @ 16 A	975 mV @ 16 A	Compatible - Equal specification
Reverse Recovery Time (trr)	35 ns	35 ns	Compatible - Equal specification
Current - Reverse Leakage @ Vr	10 µA @ 150 V	10 µA @ 200 V	Compatible - Equal specification
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	Compatible - Identical package
Operating Temperature - Junction	-65°C to 150°C	-65°C to 150°C	Compatible - Equal range
Mounting Type	Surface Mount	Surface Mount	Compatible - Identical mounting
Product Status	Last Time Buy	Active	Substitute available in active production

Engineering Selection Recommendations

The FESB16DT-M3/I is a direct substitute for the FESB16CT-E3/45 based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters are identical or superior. The FESB16DT-M3/I provides a higher DC reverse voltage rating (200 V versus 150 V), which maintains backward compatibility with the original design while providing additional voltage margin.

Mechanical Equivalence: Both devices use identical TO-263AB (D2PAK) packaging with surface mount configuration, ensuring PCB layout compatibility without modification.

Product Status: The FESB16CT-E3/45 is in Last Time Buy status, indicating end-of-life production. The FESB16DT-M3/I is in Active status with current manufacturing availability (793 pcs in stock), providing long-term procurement security.

Compliance and Qualification: The FESB16DT-M3/I carries AEC-Q101 automotive qualification and is RoHS3 compliant, meeting stringent industry standards. This qualification level exceeds the requirements of the original part and is suitable for applications requiring enhanced reliability documentation.

Frequently Asked Questions (FAQ)

Q: Can the FESB16DT-M3/I be used as a direct replacement for the FESB16CT-E3/45 without PCB modifications?

A: Yes. Both devices are housed in identical TO-263AB (D2PAK) packages with the same pinout configuration. No PCB layout changes are required for substitution.

Q: What is the significance of the higher 200 V rating on the FESB16DT-M3/I compared to the 150 V rating of the FESB16CT-E3/45?

A: The higher voltage rating provides additional design margin and does not negatively impact circuit performance. Circuits designed for 150 V operation will function identically with a 200 V rated device. The substitute part is suitable for applications requiring either 150 V or 200 V rated components.

Q: Are the forward voltage drop characteristics identical between these two parts?

A: Yes. Both parts specify 975 mV maximum forward voltage drop at 16 A, ensuring identical thermal and power dissipation characteristics in the circuit.

Q: What is the difference between the FESB16CT-E3/45 and FESB16DT-M3/I product statuses?

A: The FESB16CT-E3/45 is in Last Time Buy status, meaning production has been discontinued and existing inventory will not be replenished. The FESB16DT-M3/I is in Active status with ongoing manufacturing and availability.

Q: Does the AEC-Q101 qualification on the FESB16DT-M3/I affect its use in non-automotive applications?

A: No. AEC-Q101 qualification indicates the part meets automotive industry reliability standards. Parts with automotive qualification are suitable for all application types, including industrial, consumer, and commercial applications.

Q: Are the reverse recovery time specifications identical?

A: Yes. Both parts specify 35 ns reverse recovery time, ensuring identical switching performance and fast recovery characteristics in rectification circuits.

Q: What is the current inventory status for the substitute part?

A: The FESB16DT-M3/I has 793 pcs of new original stock currently available, providing adequate supply for production requirements.

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