ER306-TP Equivalent & Substitute Parts

Part Overview

The ER306-TP is a general-purpose rectifier diode rated for 600 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ER306-TP are classified based on electrical and mechanical parameter alignment within the following criteria:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 600 V (exact match required)
Current - Average Rectified (Io): 3 A (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: DO-201AD, Axial (exact match required)
Operating Temperature Range: -55°C ~ 150°C (minimum requirement)

Secondary Parameters Allowing Variation:

Voltage - Forward (Vf) (Max) @ If: 1.7 V ± 0.05 V @ 3 A
Reverse Recovery Time (trr): 35 ns to 100 ns
Current - Reverse Leakage @ Vr: 1 µA to 10 µA @ 600 V
Capacitance @ Vr, F: 25 pF to 60 pF @ 4V, 1MHz

Direct Equivalents maintain all critical and secondary parameters within specified tolerances and are sourced from active manufacturers.

Parametric Equivalents maintain all critical parameters and operating temperature range but may exhibit variations in secondary parameters such as reverse recovery time, leakage current, or capacitance. These variations remain within acceptable engineering tolerances for general-purpose rectification applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	trr (ns)	Ir @ Vr	Packaging	Temp Range
ER306-TP	Micro Commercial Co	Obsolete	600 V	3 A	1.7 V @ 3 A	35	5 µA @ 600 V	Bulk	-55°C ~ 150°C
SF38G-TP	Micro Commercial Co	Active	600 V	3 A	1.75 V @ 3 A	35	5 µA @ 600 V	Tape & Reel	-65°C ~ 150°C
UF5406GP-TP	Micro Commercial Co	Active	600 V	3 A	1.7 V @ 3 A	75	10 µA @ 600 V	Tape & Reel	-55°C ~ 150°C
1N5406GHB0G	Taiwan Semiconductor Corporation	Active	600 V	3 A	1.0 V @ 3 A	N/A	5 µA @ 600 V	Bulk	-55°C ~ 150°C
ER306_R2_00001	Panjit International Inc.	Active	600 V	3 A	1.7 V @ 3 A	35	1 µA @ 600 V	Cut Tape	-55°C ~ 150°C
HER306G	Taiwan Semiconductor Corporation	Active	600 V	3 A	1.7 V @ 3 A	75	10 µA @ 600 V	Cut Tape	-55°C ~ 150°C
SF38G	Taiwan Semiconductor Corporation	Active	600 V	3 A	1.7 V @ 3 A	35	5 µA @ 600 V	Cut Tape	-55°C ~ 150°C
SF38G A0G	Taiwan Semiconductor Corporation	Active	600 V	3 A	1.7 V @ 3 A	35	5 µA @ 600 V	Cut Tape	-55°C ~ 150°C
SF38GH	Taiwan Semiconductor Corporation	Active	600 V	3 A	1.7 V @ 3 A	35	5 µA @ 600 V	Cut Tape	-55°C ~ 150°C
UF306G_R2_00001	Panjit International Inc.	Active	600 V	3 A	1.7 V @ 3 A	100	1 µA @ 600 V	Tape & Reel	-55°C ~ 150°C
UF5406-E3/54	Vishay General Semiconductor - Diodes Division	Active	600 V	3 A	1.7 V @ 3 A	75	10 µA @ 600 V	Cut Tape	-55°C ~ 150°C

Engineering Selection Recommendations

Direct Equivalents (Preferred for Drop-In Replacement):

SF38G-TP and ER306_R2_00001 are direct parametric equivalents to the ER306-TP. Both maintain the 600 V reverse voltage rating, 3 A average rectified current, 1.7 V forward voltage at 3 A, and 35 ns reverse recovery time. Both are manufactured by active suppliers and carry ROHS3 compliance. SF38G-TP is available in Tape & Reel packaging with an extended lower operating temperature limit of -65°C. ER306_R2_00001 is available in Cut Tape packaging and exhibits superior reverse leakage characteristics at 1 µA @ 600 V.

Parametric Equivalents (Acceptable for General-Purpose Applications):

UF5406GP-TP, HER306G, SF38G, SF38G A0G, SF38GH, and UF5406-E3/54 are parametric equivalents that maintain all critical electrical ratings while exhibiting variations in secondary parameters. These parts are suitable for applications where reverse recovery time tolerance of 75 ns to 100 ns and reverse leakage current tolerance of 5 µA to 10 µA @ 600 V are acceptable.

Specialized Alternatives:

1N5406GHB0G is an automotive-grade alternative from Taiwan Semiconductor Corporation with AEC-Q101 qualification. This part exhibits a lower forward voltage of 1.0 V @ 3 A and standard recovery characteristics. Selection of this part is appropriate for automotive applications requiring AEC-Q101 compliance.

SF38GH is an automotive-grade variant with AEC-Q101 qualification, maintaining fast recovery characteristics and identical electrical parameters to SF38G.

Compliance and Availability:

All substitute parts listed are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1). All active parts carry REACH Unaffected status. Inventory availability ranges from 802 to 6633 pieces across substitute options, providing supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can SF38G-TP be used as a direct replacement for ER306-TP?

A: Yes. SF38G-TP is a direct parametric equivalent with identical voltage and current ratings, forward voltage characteristics, and reverse recovery time. The primary difference is packaging format: SF38G-TP is supplied in Tape & Reel format while ER306-TP was supplied in bulk. SF38G-TP also provides an extended lower operating temperature limit of -65°C compared to -55°C for the original part.

Q: What is the difference between SF38G and SF38G-TP?

A: SF38G and SF38G-TP are electrically identical. The suffix "-TP" indicates Tape & Reel packaging format, while SF38G without suffix is supplied in Cut Tape format. Both are manufactured by Micro Commercial Co and maintain identical electrical specifications.

Q: Are UF5406GP-TP and UF5406-E3/54 interchangeable with ER306-TP?

A: Both parts are parametric equivalents suitable for general-purpose rectification. They maintain the 600 V reverse voltage and 3 A current ratings. However, both exhibit a reverse recovery time of 75 ns compared to 35 ns for the original part, and reverse leakage current of 10 µA @ 600 V compared to 5 µA. These differences are acceptable for most general-purpose applications but should be evaluated for high-frequency switching applications.

Q: What is the significance of the reverse recovery time difference between ER306-TP (35 ns) and UF5406GP-TP (75 ns)?

A: Reverse recovery time affects switching speed and switching losses. The ER306-TP with 35 ns reverse recovery time is classified as fast recovery. UF5406GP-TP with 75 ns is still classified as fast recovery but exhibits slower switching characteristics. For applications operating at frequencies below 100 kHz, this difference is typically not significant. For higher-frequency applications, the faster recovery time of ER306-TP or equivalent fast-recovery parts (SF38G, ER306_R2_00001) is preferred.

Q: Can automotive-grade parts (1N5406GHB0G, SF38GH) be used in non-automotive applications?

A: Yes. Automotive-grade parts with AEC-Q101 qualification exceed the quality and reliability requirements of general-purpose applications. These parts are suitable for any application requiring the specified electrical ratings and operating temperature range.

Q: What packaging options are available for ER306-TP equivalents?

A: Substitute parts are available in three packaging formats: Tape & Reel (SF38G-TP, UF306G_R2_00001, UF5406GP-TP), Cut Tape (ER306_R2_00001, HER306G, SF38G, SF38G A0G, SF38GH, UF5406-E3/54), and Bulk (1N5406GHB0G). Selection depends on production volume and assembly equipment compatibility.

Q: Which substitute part has the lowest reverse leakage current?

A: ER306_R2_00001 and UF306G_R2_00001, both manufactured by Panjit International Inc., exhibit the lowest reverse leakage current at 1 µA @ 600 V. This characteristic is beneficial for applications requiring minimal leakage current in high-impedance circuits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification and unlimited moisture sensitivity level (MSL 1), meeting current environmental and reliability standards.

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