MURF1620CT Equivalent & Substitute Parts

Part Overview

The MURF1620CT is a general-purpose diode array manufactured by onsemi, configured as 1 pair common cathode with 200V reverse voltage rating and 8A average rectified current per diode. The device is packaged in TO-220-3 Full Pack through-hole configuration and operates across a junction temperature range of -65°C to 150°C. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	8	A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 8 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Diode Configuration	1 Pair Common Cathode	-
Operating Temperature - Junction	-65°C ~ 150°C	°C
Package / Case	TO-220-3 Full Pack	-
Mounting Type	Through Hole	-

Substitute Part Grouping Explanation

Substitution of the MURF1620CT is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200V
Diode Configuration: 1 Pair Common Cathode
Package / Case: TO-220-3 Full Pack
Mounting Type: Through Hole

Allowable Variation Parameters:

Current - Average Rectified (Io): Equal or greater than 8A
Voltage - Forward (Vf): Within acceptable circuit operating margins
Reverse Recovery Time (trr): Equal or less than specified value
Current - Reverse Leakage: Equal or less than specified value
Operating Temperature - Junction: Equal or greater maximum rating

Substitute parts are grouped into two categories: direct equivalents (identical electrical and mechanical specifications) and similar parts (matching core parameters with enhanced current ratings or improved performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [mV]	trr [ns]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Status
MURF1620CT	onsemi	200	8	975 @ 8A	35	5 @ 200V	150	TO-220-3 Full Pack	Obsolete
MURF1620CTG	onsemi	200	8	975 @ 8A	35	5 @ 200V	150	TO-220-3 Full Pack	Active
STTH1602CFP	STMicroelectronics	200	10	1100 @ 8A	26	6 @ 200V	175	TO-220-3 Full Pack	Active
RF1601T2D	Rohm Semiconductor	200	8	930 @ 8A	30	10 @ 200V	150	TO-220-3 Full Pack	Active
FFPF20UP20DNTU	onsemi	200	10	1150 @ 10A	45	100 @ 200V	150	TO-220-3 Full Pack	Obsolete
BYVF32-200-E3/45	Vishay General Semiconductor	200	18	1150 @ 20A	25	10 @ 200V	150	TO-220-3 Full Pack, Isolated Tab	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

MURF1620CTG is the direct equivalent to MURF1620CT. Both parts share identical electrical specifications and mechanical packaging. MURF1620CTG is classified as active product status with RoHS3 compliance, providing superior procurement availability and regulatory alignment compared to the obsolete MURF1620CT. This part is the preferred replacement for direct substitution without circuit redesign.

Active Substitutes with Enhanced Performance:

STTH1602CFP (STMicroelectronics) provides 10A current rating versus 8A, with improved reverse recovery time of 26ns and maximum junction temperature of 175°C. This part is RoHS3 compliant and active status. The higher current rating provides design margin for existing 8A applications.

RF1601T2D (Rohm Semiconductor) matches the 8A current rating with identical 200V reverse voltage. Forward voltage is reduced to 930mV at 8A, and reverse recovery time is 30ns. This part is RoHS3 compliant and active status, suitable for applications requiring lower forward voltage drop.

BYVF32-200-E3/45 (Vishay) offers significantly higher current capacity at 18A with isolated tab packaging. This part is suitable for applications requiring higher current handling or thermal isolation. RoHS3 compliant and active status.

Obsolete Substitutes (Not Recommended for New Designs):

FFPF20UP20DNTU is classified as obsolete and should not be selected for new designs despite meeting core electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can MURF1620CTG directly replace MURF1620CT without circuit modification?

A: Yes. MURF1620CTG is the direct equivalent with identical electrical and mechanical specifications. The only difference is product status (active versus obsolete) and packaging format (tube versus full pack). No circuit redesign is required.

Q: What is the difference between MURF1620CT and STTH1602CFP?

A: STTH1602CFP has a higher current rating (10A versus 8A), faster reverse recovery time (26ns versus 35ns), and higher maximum junction temperature (175°C versus 150°C). Forward voltage is slightly higher at 1.1V versus 975mV at 8A. STTH1602CFP is manufactured by STMicroelectronics and is active status.

Q: Can I use BYVF32-200-E3/45 in place of MURF1620CT?

A: BYVF32-200-E3/45 meets the core electrical requirements (200V reverse voltage, 1 pair common cathode configuration, TO-220-3 package). However, it has significantly higher current rating (18A versus 8A) and includes an isolated tab feature. This part is suitable for applications requiring higher current capacity or thermal isolation. Verify thermal management and PCB layout compatibility due to isolated tab configuration.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This indicates the diode array contains two diodes with a shared cathode connection. The common cathode configuration is essential for bridge rectifier applications and must be maintained when selecting substitutes.

Q: Are all substitute parts RoHS3 compliant?

A: MURF1620CTG, STTH1602CFP, RF1601T2D, and BYVF32-200-E3/45 are all RoHS3 compliant. FFPF20UP20DNTU is also RoHS3 compliant but is obsolete status. The original MURF1620CT is RoHS non-compliant.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time affects switching speed and efficiency in rectifier applications. Lower trr values indicate faster switching. BYVF32-200-E3/45 has the fastest recovery at 25ns, while FFPF20UP20DNTU has the slowest at 45ns. For most applications, differences within this range are acceptable.

Q: Can I use a substitute with higher current rating in a circuit designed for 8A?

A: Yes. Parts with equal or higher current ratings are suitable for applications designed for lower current. Higher current ratings provide design margin and typically indicate improved thermal characteristics. Verify that forward voltage and reverse recovery time remain within acceptable circuit operating parameters.

Q: What is the difference between TO-220-3 Full Pack and ITO-220AB packaging?

A: ITO-220AB (used in BYVF32-200-E3/45) includes an isolated tab feature, providing electrical isolation between the tab and the case. Standard TO-220-3 Full Pack does not have this isolation. Isolated tab packaging is beneficial for thermal management in high-current applications where multiple devices are mounted on a common heatsink.

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