FFD04H60S Equivalent & Substitute Parts

Part Overview

The FFD04H60S is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 4 A average rectified current in a surface mount TO-252AA package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the TO-252-3 DPAK package family.

Key Parameters

Parameter	FFD04H60S
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	2.1 V @ 4 A
Reverse Recovery Time (trr)	60 ns
Current - Reverse Leakage @ Vr	100 µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the FFD04H60S is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Package / Case: Must be TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Must be Surface Mount
Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

Current - Average Rectified (Io): Substitute parts rated at 4 A or higher are acceptable, as higher current ratings provide design margin
Voltage - Forward (Vf) (Max) @ If: Variation acceptable within the same voltage class
Reverse Recovery Time (trr): Lower values indicate improved performance characteristics
Current - Reverse Leakage @ Vr: Lower values indicate improved performance characteristics
Operating Temperature - Junction: Extended ranges provide additional design flexibility

All four substitute parts meet the mandatory compatibility criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Parameter	FFD04H60S	MURHD560T4G	BYV25D-600,118	DSEP6-06AS-TRL	DSEP6-06BS-TRL
Manufacturer	onsemi	onsemi	WeEn Semiconductors	IXYS	IXYS
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	4 A	5 A	5 A	6 A	6 A
Voltage - Forward (Vf) (Max) @ If	2.1 V @ 4 A	2.7 V @ 5 A	1.3 V @ 5 A	2.02 V @ 6 A	2.66 V @ 6 A
Reverse Recovery Time (trr)	60 ns	30 ns	60 ns	20 ns	15 ns
Current - Reverse Leakage @ Vr	100 µA @ 600 V	10 µA @ 600 V	50 µA @ 600 V	50 µA @ 600 V	50 µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 175°C	150°C (Max)	-40°C ~ 175°C	-55°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

MURHD560T4G (onsemi)

The MURHD560T4G is an active onsemi product offering 5 A current rating with identical 600 V voltage specification. This part provides direct manufacturer continuity from the obsolete FFD04H60S. Extended operating temperature range to 175°C and improved reverse recovery time of 30 ns support enhanced thermal performance. Reverse leakage current of 10 µA represents significant improvement over the original specification. Tape & Reel packaging accommodates high-volume production requirements. ROHS3 compliance and MSL 1 rating maintain environmental and handling standards.

BYV25D-600,118 (WeEn Semiconductors)

The BYV25D-600,118 provides 5 A current rating at 600 V with the lowest forward voltage specification of 1.3 V @ 5 A among all substitutes. This characteristic reduces power dissipation in rectification applications. Active product status with RoHS compliance supports ongoing availability. Operating temperature maximum of 150°C matches the original FFD04H60S specification. REACH Affected status requires verification for supply chain compliance in regulated markets. Cut Tape & Digi-Reel packaging supports both manual and automated assembly processes.

DSEP6-06AS-TRL (IXYS HiPerFRED™ Series)

The DSEP6-06AS-TRL is an IXYS HiPerFRED™ series diode rated for 6 A at 600 V with the fastest reverse recovery time of 20 ns among all substitutes. Forward voltage of 2.02 V @ 6 A provides efficient rectification performance. Extended operating temperature range to 175°C and lower minimum temperature of -40°C support demanding thermal environments. ROHS3 compliance and REACH Unaffected status ensure regulatory alignment. Moisture Sensitivity Level 3 (168 Hours) requires controlled storage conditions during manufacturing.

DSEP6-06BS-TRL (IXYS HiPerFRED™ Series)

The DSEP6-06BS-TRL is an IXYS HiPerFRED™ series diode rated for 6 A at 600 V with the fastest reverse recovery time of 15 ns among all substitutes. Extended operating temperature range to 175°C with lower minimum temperature of -55°C provides the widest thermal operating window. Capacitance specification of 5 pF @ 400V, 1MHz is provided for high-frequency circuit analysis. ROHS3 compliance, REACH Unaffected status, and MSL 1 rating support unrestricted manufacturing and supply chain deployment. Tape & Reel packaging accommodates production automation.

Frequently Asked Questions (FAQ)

Q: Can the FFD04H60S be directly replaced with a higher current-rated substitute such as DSEP6-06BS-TRL (6 A)?

A: Yes. Higher current ratings provide design margin and are electrically compatible. The 600 V voltage specification is maintained across all substitutes. Circuit performance remains within specification when a lower-current component is replaced with a higher-current rated device in the same voltage class.

Q: What is the significance of reverse recovery time (trr) differences between the FFD04H60S (60 ns) and substitute parts?

A: Reverse recovery time affects switching characteristics and electromagnetic interference generation. Substitute parts with lower trr values (DSEP6-06BS-TRL at 15 ns, DSEP6-06AS-TRL at 20 ns, MURHD560T4G at 30 ns) exhibit faster switching transitions, reducing switching losses and EMI in high-frequency applications. The FFD04H60S specification of 60 ns is maintained by BYV25D-600,118.

Q: Are all substitute parts compatible with existing PCB layouts designed for FFD04H60S?

A: Yes. All substitute parts use the TO-252-3, DPAK (2 Leads + Tab), SC-63 package with identical pinout and footprint. No PCB redesign is required for mechanical or electrical integration.

Q: What is the impact of forward voltage (Vf) variation among substitute parts?

A: Forward voltage variation affects power dissipation during conduction. BYV25D-600,118 exhibits the lowest forward voltage at 1.3 V @ 5 A, reducing heat generation. DSEP6-06AS-TRL at 2.02 V @ 6 A and MURHD560T4G at 2.7 V @ 5 A represent intermediate performance levels. Forward voltage differences are application-dependent and should be evaluated against thermal design requirements.

Q: Does the obsolete status of FFD04H60S affect supply chain availability of substitute parts?

A: No. All four substitute parts are classified as active products with current manufacturing status. Inventory levels are documented as available from authorized distributors. Transition to active substitute parts ensures long-term supply chain continuity.

Q: What compliance considerations apply when selecting between substitute parts?

A: All substitute parts are ROHS3 compliant except BYV25D-600,118, which carries RoHS Compliant status. BYV25D-600,118 is REACH Affected, requiring verification for supply chain compliance in regulated markets. DSEP6-06AS-TRL carries Moisture Sensitivity Level 3 (168 Hours), requiring controlled storage during manufacturing. MURHD560T4G, BYV25D-600,118, and DSEP6-06BS-TRL maintain MSL 1 (Unlimited) rating.

Q: Can substitute parts with extended operating temperature ranges (-55°C to 175°C for DSEP6-06BS-TRL) be used in applications originally specified for -65°C to 150°C?

A: Extended temperature ranges provide additional design margin for thermal extremes. However, application-specific thermal analysis is required to confirm that circuit performance remains within specification at the lower temperature limit. The original FFD04H60S minimum of -65°C is not matched by any substitute part; the lowest minimum temperature among substitutes is -55°C (DSEP6-06BS-TRL).

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects standoff voltage stability and power consumption during reverse bias conditions. Lower reverse leakage values indicate improved diode quality and reduced parasitic current paths. MURHD560T4G exhibits the lowest reverse leakage at 10 µA @ 600 V, compared to the FFD04H60S specification of 100 µA @ 600 V.

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