FES16JTR Equivalent & Substitute Parts

Part Overview

The FES16JTR is a general-purpose rectifier diode manufactured by onsemi, rated for 600V DC reverse voltage and 16A average rectified current in a TO-220-2 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The FES16JTR operates across a junction temperature range of -65°C to 150°C and features fast recovery characteristics with a 50 ns reverse recovery time.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 8 A	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	TO-220-2	-
Operating Temperature - Junction	-65 to 150	°C
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitution of the FES16JTR is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600V minimum
Current - Average Rectified (Io): 16A minimum (or 15A for reduced-current applications)
Mounting Type: Through Hole
Package / Case: TO-220-2 or TO-220AC compatible
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitution Categories:

Direct Equivalents maintain the 16A current rating and identical voltage specifications:

FES16JT-E3/45 (Vishay General Semiconductor - Diodes Division): Active product status, identical 16A rating, 1.5V forward voltage @ 16A, 50ns recovery time

Similar Substitutes operate at 15A current rating with 600V voltage specification:

MSR1560G (onsemi SWITCHMODE™ series): Active status, 15A rating, 1.8V forward voltage @ 15A, 45ns recovery time
MUR1560G (onsemi SWITCHMODE™ series): Active status, 15A rating, 1.5V forward voltage @ 15A, 60ns recovery time, extended temperature range to 175°C
STTH15L06D (STMicroelectronics): Active status, 15A rating, 1.55V forward voltage @ 15A, 85ns recovery time
STTH15R06D (STMicroelectronics): Active status, 15A rating, 2.9V forward voltage @ 15A, 50ns recovery time
DSEP15-06B (IXYS HiPerFRED™ series): Active status, 15A rating, 2.52V forward voltage @ 15A, 30ns recovery time
SDUR1560 (SMC Diode Solutions): Active status, 1.7V forward voltage @ 15A, 50ns recovery time

Reduced-Current Alternatives operate at lower current ratings:

STTH12R06DIRG (STMicroelectronics): Active status, 12A rating, insulated TO-220AC package, 2.9V forward voltage @ 12A, 45ns recovery time
STTH506DTI (STMicroelectronics): Active status, 5A rating, insulated TO-220AC package, 3.6V forward voltage @ 5A, 25ns recovery time

Obsolete Alternative:

RHRP1560 (onsemi): Obsolete status, 15A rating, 2.1V forward voltage @ 15A, 40ns recovery time

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]
FES16JTR	onsemi	Obsolete	600	16	1.5 @ 8A	50	10 @ 600V	TO-220-2	-65 to 150
FES16JT-E3/45	Vishay	Active	600	16	1.5 @ 16A	50	10 @ 600V	TO-220AC	-65 to 150
MSR1560G	onsemi	Active	600	15	1.8 @ 15A	45	15 @ 600V	TO-220-2	-65 to 150
MUR1560G	onsemi	Active	600	15	1.5 @ 15A	60	10 @ 600V	TO-220-2	-65 to 175
RHRP1560	onsemi	Obsolete	600	15	2.1 @ 15A	40	100 @ 600V	TO-220-2L	-65 to 175
STTH15L06D	STMicroelectronics	Active	600	15	1.55 @ 15A	85	15 @ 600V	TO-220AC	-55 to 175
SDUR1560	SMC Diode Solutions	Active	600	-	1.7 @ 15A	50	10 @ 600V	TO-220AC	-55 to 175
DSEP15-06B	IXYS	Active	600	15	2.52 @ 15A	30	100 @ 600V	TO-220AC	-55 to 175
STTH12R06DIRG	STMicroelectronics	Active	600	12	2.9 @ 12A	45	45 @ 600V	TO-220AC ins	-55 to 175
STTH506DTI	STMicroelectronics	Active	600	5	3.6 @ 5A	25	6 @ 600V	TO-220AC ins	-55 to 175
STTH15R06D	STMicroelectronics	Active	600	15	2.9 @ 15A	50	60 @ 600V	TO-220AC	-55 to 175

Engineering Selection Recommendations

For Direct Replacement (16A Rating):

FES16JT-E3/45 from Vishay General Semiconductor - Diodes Division is the primary direct equivalent. This part maintains the 16A current rating, 600V voltage specification, and identical 1.5V forward voltage at rated current. The part is active in production status with RoHS3 compliance, ensuring long-term availability and regulatory alignment. The TO-220AC package is mechanically and electrically compatible with the original TO-220-2 footprint. Operating temperature range remains -65°C to 150°C, matching the original specification.

For 15A Current Rating Applications:

When 15A current capacity is acceptable, multiple active alternatives are available:

MUR1560G (onsemi SWITCHMODE™ series) offers the lowest forward voltage (1.5V @ 15A) among 15A options and extends the maximum junction temperature to 175°C. This part provides superior thermal performance for extended operating environments.

STTH15L06D (STMicroelectronics) provides 1.55V forward voltage @ 15A with active production status and RoHS3 compliance. The slightly higher reverse recovery time (85ns) remains within fast recovery classification.

DSEP15-06B (IXYS HiPerFRED™ series) features the fastest reverse recovery time (30ns) among 15A substitutes, beneficial for high-frequency switching applications, though forward voltage is elevated at 2.52V @ 15A.

For Reduced Current Applications:

STTH12R06DIRG (STMicroelectronics) at 12A rating provides an insulated TO-220AC package variant, suitable for applications requiring galvanic isolation. STTH506DTI at 5A rating offers the fastest recovery time (25ns) for low-current, high-frequency circuits.

Compliance and Availability:

All recommended active substitutes carry RoHS3 compliance and REACH Unaffected status. SDUR1560 (SMC Diode Solutions) is REACH Affected and should be evaluated against supply chain requirements. Obsolete alternatives (RHRP1560) should not be selected for new designs despite active inventory levels.

Frequently Asked Questions (FAQ)

Q: Can FES16JT-E3/45 directly replace FES16JTR in existing designs?

A: Yes. FES16JT-E3/45 maintains identical electrical specifications (600V, 16A, 1.5V forward voltage, 50ns recovery time) and operates across the same temperature range (-65°C to 150°C). The TO-220AC package is mechanically compatible with TO-220-2 footprints. Both parts are classified as fast recovery diodes with identical speed characteristics.

Q: What is the difference between TO-220-2 and TO-220AC packages?

A: Both designations refer to the same three-lead through-hole package format. TO-220-2 and TO-220AC are equivalent package types used interchangeably by different manufacturers. The TO-220-2L variant (used in RHRP1560) includes a longer lead configuration but maintains the same footprint compatibility.

Q: Can I use a 15A-rated diode in place of the 16A FES16JTR?

A: Substitution depends on circuit current requirements. If the actual circuit current does not exceed 15A, parts such as MUR1560G, STTH15L06D, or DSEP15-06B are suitable. If circuit current approaches or exceeds 15A, the 16A-rated FES16JT-E3/45 is required to maintain design margin.

Q: Why do some substitute parts have higher forward voltage drops?

A: Forward voltage variation reflects differences in semiconductor technology and manufacturing processes across manufacturers. DSEP15-06B (2.52V @ 15A) and STTH15R06D (2.9V @ 15A) employ different junction designs that prioritize reverse recovery speed over forward voltage efficiency. Circuit thermal analysis should account for increased power dissipation when selecting higher forward voltage alternatives.

Q: Are insulated package variants (TO-220AC ins) compatible with standard TO-220-2 designs?

A: Insulated variants such as STTH12R06DIRG and STTH506DTI feature the same lead configuration but include internal isolation between the semiconductor junction and the metal mounting tab. These parts are mechanically compatible but introduce galvanic isolation. Use insulated variants only when isolation is required or when standard variants are unavailable.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference characteristics. The FES16JTR specifies 50ns recovery time. Substitutes range from 30ns (DSEP15-06B, fastest) to 85ns (STTH15L06D, slowest). Faster recovery reduces switching losses in high-frequency applications but may increase EMI. Slower recovery may require additional circuit filtering. Selection depends on circuit switching frequency and EMI requirements.

Q: Why is the FES16JTR classified as obsolete?

A: Obsolete classification indicates the manufacturer (onsemi) has discontinued production. Despite 1695 pieces in current inventory, no new production is available. Active substitutes ensure design continuity and long-term supply security.

Q: Can I use STTH506DTI (5A) in a 16A circuit?

A: No. STTH506DTI is rated for maximum 5A average rectified current. Using this part in a 16A circuit exceeds its current rating and causes thermal failure and junction damage. Current rating must equal or exceed circuit requirements.

Q: What compliance certifications should I verify for substitute parts?

A: All recommended active substitutes carry RoHS3 compliance and REACH Unaffected status, matching the original FES16JTR regulatory profile. SDUR1560 is REACH Affected and requires evaluation against supply chain and regulatory requirements specific to your application region and customer specifications.

Q: How do I select between multiple 15A alternatives?

A: Selection criteria include: (1) Forward voltage drop and thermal budget—MUR1560G and STTH15L06D offer lower forward voltages; (2) Reverse recovery time—DSEP15-06B provides fastest switching for high-frequency circuits; (3) Temperature range—MUR1560G and STTH15L06D extend to 175°C; (4) Availability and lead time—verify current inventory with suppliers; (5) Regulatory compliance—confirm REACH and RoHS status for your market.

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