FSV340FP Equivalent & Substitute Parts

Part Overview

The FSV340FP is a Schottky rectifier diode manufactured by onsemi, rated for 40 V DC reverse voltage and 3 A average rectified current in a surface mount SOD-123HE package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and design requirements. Substitute parts must maintain electrical performance within the specified parameters while offering active product status and continued availability.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	520 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	12.37 ns
Current - Reverse Leakage @ Vr	160 µA @ 40 V
Mounting Type	Surface Mount
Package / Case	SOD-123H
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the FSV340FP are classified based on electrical parameter compatibility and package configuration. The primary substitution criteria are:

Electrical Parameters (Required Match):

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 3 A
Technology: Schottky
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Package Compatibility: Substitutes are grouped into two categories: direct package equivalents (SOD-123HE) and alternative surface mount packages (SOD-123W, DO-220AA) that maintain electrical performance within specified parameters.

Compliance Requirements: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original component.

Parameter Comparison

Parameter	FSV340FP (onsemi)	SS3040HE-AU_R1_000A1 (Panjit)	SS3040HE_R1_00001 (Panjit)	SS34LWH (Taiwan Semiconductor)	SS3P4-M3/84A (Vishay)
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	520 mV @ 3 A	520 mV @ 3 A	520 mV @ 3 A	550 mV @ 3 A	600 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	160 µA @ 40 V	150 µA @ 40 V	160 µA @ 40 V	200 µA @ 40 V	150 µA @ 40 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123H	SOD-123H	SOD-123H	SOD-123W	DO-220AA
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 125°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Package Equivalents (SOD-123HE):

SS3040HE-AU_R1_000A1 and SS3040HE_R1_00001 (both Panjit International Inc.) provide parametric equivalence to the FSV340FP with identical package geometry, forward voltage characteristics, and operating temperature range. Both parts maintain active product status. SS3040HE-AU_R1_000A1 includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. SS3040HE_R1_00001 offers standard industrial qualification. Both parts are available in tape and reel packaging.

Alternative Package Options:

SS34LWH (Taiwan Semiconductor Corporation) substitutes the FSV340FP in applications where SOD-123W package geometry is acceptable. This part maintains 40 V / 3 A electrical ratings and fast recovery characteristics. Forward voltage is 550 mV at 3 A, representing a 30 mV increase over the original specification. Operating temperature range is limited to -55°C ~ 125°C, reducing the upper junction temperature by 25°C compared to the FSV340FP.

SS3P4-M3/84A (Vishay General Semiconductor - Diodes Division) provides substitution in applications accommodating DO-220AA (SMP) package format. This part maintains 40 V / 3 A electrical ratings and fast recovery characteristics. Forward voltage is 600 mV at 3 A, representing a 80 mV increase over the original specification. Operating temperature range matches the FSV340FP at -55°C ~ 150°C. This part is qualified under the eSMP® series designation.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and REACH unaffected status. All parts are available in active production with confirmed inventory levels exceeding 5,700 units.

Frequently Asked Questions (FAQ)

Q: Can SS3040HE-AU_R1_000A1 and SS3040HE_R1_00001 be used interchangeably with the FSV340FP?

A: Both Panjit parts provide parametric equivalence in the SOD-123HE package with identical 40 V / 3 A ratings and 520 mV forward voltage at 3 A. The primary difference is automotive qualification (AEC-Q101) in the SS3040HE-AU_R1_000A1 variant. Selection depends on application requirements for automotive-grade certification.

Q: What is the impact of using SS34LWH as a substitute?

A: SS34LWH maintains electrical ratings of 40 V / 3 A and fast recovery characteristics. The SOD-123W package provides equivalent surface mount functionality. Forward voltage increases to 550 mV at 3 A. Operating temperature range is reduced to -55°C ~ 125°C, limiting applications requiring operation above 125°C junction temperature.

Q: Is the SS3P4-M3/84A suitable for direct PCB replacement?

A: SS3P4-M3/84A requires PCB layout modification due to the DO-220AA (SMP) package format, which differs from the SOD-123H footprint of the FSV340FP. This part is suitable for new designs or redesigned PCB layouts accommodating the larger package geometry. Forward voltage increases to 600 mV at 3 A.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed maintain ROHS3 compliance, matching the regulatory status of the FSV340FP. All parts carry MSL 1 moisture sensitivity rating and REACH unaffected status.

Q: Which substitute offers the closest electrical match to the FSV340FP?

A: SS3040HE-AU_R1_000A1 and SS3040HE_R1_00001 provide the closest electrical match with identical forward voltage (520 mV @ 3 A), package geometry (SOD-123HE), and operating temperature range (-55°C ~ 150°C). These parts are direct parametric equivalents.

Q: What inventory levels are available for each substitute?

A: SS3040HE-AU_R1_000A1 has 5,766 units in stock. SS3040HE_R1_00001 has 6,100 units in stock. SS34LWH has 31,352 units in stock. SS3P4-M3/84A has 20,300 units in stock. All parts are available as new original components in tape and reel packaging.

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