FES16BTR Equivalent & Substitute Parts

Part Overview

The FES16BTR is a general-purpose rectifier diode manufactured by onsemi, rated for 100 V DC reverse voltage and 16 A average rectified current in a Through Hole TO-220-2 package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	16 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 8 A
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type	Through Hole
Package / Case	TO-220-2
Operating Temperature - Junction	-65°C ~ 150°C

Substitute Part Grouping Explanation

Substitute parts for the FES16BTR are classified based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:

Direct Equivalent Classification: Parts meeting identical or superior ratings for voltage (Vr), current (Io), reverse recovery time (trr), and package type (TO-220-2) with active product status.

Similar Classification: Parts with different electrical specifications that may serve alternative applications but do not meet all original parameter requirements.

The FES16BT-E3/45 qualifies as a direct equivalent, maintaining the same 100 V / 16 A rating, 35 ns reverse recovery time, and TO-220-2 package configuration with active product status. The STTH1210DY is classified as similar due to differing voltage (1000 V) and current (12 A) ratings, representing a different application class despite compatible packaging.

Parameter Comparison

Parameter	FES16BTR (Main)	FES16BT-E3/45 (Direct Equivalent)	STTH1210DY (Similar)
Manufacturer	onsemi	Vishay General Semiconductor - Diodes Division	STMicroelectronics
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	1000 V
Current - Average Rectified (Io)	16 A	16 A	12 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 8 A	975 mV @ 16 A	2 V @ 12 A
Reverse Recovery Time (trr)	35 ns	35 ns	90 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 1000 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2	TO-220-2	TO-220-2
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-40°C ~ 175°C
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Qualification	Not specified	Not specified	AEC-Q101

Engineering Selection Recommendations

FES16BT-E3/45 (Direct Equivalent): This part is the primary substitute for the obsolete FES16BTR. It maintains identical electrical specifications (100 V, 16 A, 35 ns trr) and package configuration. The FES16BT-E3/45 carries active product status and ROHS3 compliance, supporting long-term availability and regulatory requirements. This part is suitable for direct replacement in existing designs without circuit modification.

STTH1210DY (Similar Alternative): This part is applicable only in applications where the higher voltage rating (1000 V) and lower current rating (12 A) are acceptable. The STTH1210DY features AEC-Q101 automotive qualification and extended operating temperature range (-40°C ~ 175°C), making it suitable for automotive and high-temperature applications. The increased reverse recovery time (90 ns) and forward voltage (2 V @ 12 A) represent performance trade-offs compared to the original specification. This part is not a direct replacement and requires circuit evaluation.

Frequently Asked Questions (FAQ)

Q: Can the FES16BT-E3/45 be used as a direct replacement for the FES16BTR?

A: Yes. The FES16BT-E3/45 maintains identical voltage (100 V), current (16 A), reverse recovery time (35 ns), and operating temperature range (-65°C ~ 150°C) specifications. Both parts use the TO-220-2 package. No circuit modifications are required for substitution.

Q: What are the key differences between the FES16BT-E3/45 and STTH1210DY?

A: The FES16BT-E3/45 matches the original FES16BTR specifications exactly (100 V / 16 A). The STTH1210DY has a higher voltage rating (1000 V) but lower current rating (12 A), longer reverse recovery time (90 ns), and higher forward voltage (2 V @ 12 A). These differences make the STTH1210DY unsuitable for direct replacement in circuits designed for 100 V / 16 A operation.

Q: Are both substitute parts available in the same package?

A: Both substitute parts use the TO-220-2 package configuration and are mounted as Through Hole components. Physical interchangeability is confirmed for both parts.

Q: What compliance certifications apply to the substitute parts?

A: The FES16BT-E3/45 is ROHS3 compliant. The STTH1210DY is ROHS3 compliant and carries AEC-Q101 automotive qualification. Both parts have REACH Unaffected status and EAR99 ECCN classification.

Q: Does the FES16BT-E3/45 have the same moisture sensitivity level as the original part?

A: Yes. Both the FES16BTR and FES16BT-E3/45 have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Can the STTH1210DY be used in applications requiring 16 A current?

A: No. The STTH1210DY is rated for 12 A average rectified current, which is below the 16 A requirement of the original FES16BTR specification. Using this part in a 16 A application would exceed its current rating.

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