ES3F V7G Equivalent & Substitute Parts

Part Overview

The ES3F V7G is a general-purpose rectifier diode rated for 300 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. Manufactured by Taiwan Semiconductor Corporation, this component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	300 V
Current - Average Rectified (Io)	3 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ES3F V7G is determined by electrical and mechanical parameter alignment within the rectifier diode category. The primary substitution criteria are:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 300 V minimum
Current - Average Rectified (Io): 3 A minimum
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): ≤ 35 ns

Mechanical Parameters:

Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount

Compliance Parameters:

RoHS Status: ROHS3 Compliant

The ES3F from Diotec Semiconductor meets all substitution criteria and is classified as an active product with current inventory availability.

Parameter Comparison

Parameter	ES3F V7G (Taiwan Semiconductor)	ES3F (Diotec Semiconductor)	Substitution Status
Voltage - DC Reverse (Vr) (Max)	300 V	300 V	Match
Current - Average Rectified (Io)	3 A	3 A	Match
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Match
Reverse Recovery Time (trr)	35 ns	25 ns	Substitute Superior
Current - Reverse Leakage @ Vr	10 µA @ 300 V	5 µA @ 300 V	Substitute Superior
Package / Case	DO-214AB, SMC	DO-214AB, SMC	Match
Mounting Type	Surface Mount	Surface Mount	Match
Operating Temperature - Junction	-55°C ~ 150°C	-50°C ~ 150°C	Substitute Narrower Range
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match

Engineering Selection Recommendations

The ES3F from Diotec Semiconductor is a direct functional equivalent to the discontinued ES3F V7G from Taiwan Semiconductor Corporation. Both components share identical electrical ratings for voltage and current, matching package specifications, and RoHS3 compliance status.

The Diotec ES3F demonstrates improved performance characteristics in reverse recovery time (25 ns versus 35 ns) and reverse leakage current (5 µA versus 10 µA at 300 V), indicating enhanced switching efficiency and lower standby current consumption. The operating temperature range of the Diotec variant (-50°C to 150°C) is narrower at the lower bound by 5°C compared to the original part (-55°C to 150°C); this difference is significant only for applications requiring operation below -50°C.

The Diotec ES3F is currently active in production with substantial inventory availability (3669 pieces), supporting immediate procurement requirements. Selection of this substitute part is appropriate for all applications where the original ES3F V7G was specified, provided the minimum operating temperature requirement does not fall below -50°C.

Frequently Asked Questions (FAQ)

Q: Can the Diotec ES3F directly replace the Taiwan Semiconductor ES3F V7G in existing designs?

A: Yes, the Diotec ES3F is a direct functional replacement. Both components share identical voltage ratings (300 V), current ratings (3 A), package type (DO-214AB, SMC), and mounting configuration (surface mount). The substitute part meets or exceeds the electrical performance specifications of the original component.

Q: What is the significance of the reverse recovery time difference (25 ns versus 35 ns)?

A: Reverse recovery time (trr) defines the interval required for a diode to transition from forward conduction to reverse blocking state. The Diotec ES3F exhibits faster recovery (25 ns), resulting in reduced switching losses and improved efficiency in high-frequency switching applications. This represents an improvement over the original specification.

Q: Does the narrower operating temperature range of the Diotec ES3F affect compatibility?

A: The Diotec ES3F operates from -50°C to 150°C, compared to -55°C to 150°C for the original part. This difference is relevant only for applications requiring junction temperatures below -50°C. For standard industrial and commercial temperature ranges, this specification difference does not impact functionality.

Q: Are both components available in the same packaging format?

A: Yes. Both the ES3F V7G and the Diotec ES3F are supplied in DO-214AB (SMC) surface mount packages. The Diotec variant is available in Tape & Reel (TR) packaging format, which is standard for high-volume surface mount assembly operations.

Q: What compliance certifications apply to the substitute part?

A: The Diotec ES3F is ROHS3 compliant, matching the compliance status of the original ES3F V7G. Both components meet the same environmental and regulatory requirements for restricted substance usage.

Q: Is the reverse leakage current improvement significant for circuit design?

A: The Diotec ES3F exhibits lower reverse leakage current (5 µA at 300 V versus 10 µA), indicating reduced standby power consumption and improved blocking characteristics. This improvement is beneficial in low-power applications and does not introduce any compatibility concerns.

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