31DF6 A0G Equivalent & Substitute Parts

Part Overview

The 31DF6 A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

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	20 µA @ 600 V
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature - Junction	-40°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 31DF6 A0G are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 3 A or higher
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Secondary Considerations:

Voltage - Forward (Vf) characteristics
Recovery speed classification (Fast Recovery or Standard Recovery)
Reverse Recovery Time (trr)
Current - Reverse Leakage @ Vr
Operating Temperature range

Parts are considered substitutable when they meet or exceed the primary matching criteria. Parts with higher current ratings (6 A) or different recovery speed classifications are included as they provide functional compatibility within the same voltage and package specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	trr	Ir @ Vr	Tj (Max)
31DF6 A0G	Taiwan Semiconductor Corporation	600 V	3 A	1.7 V @ 3 A	Fast Recovery ≤ 500ns	35 ns	20 µA @ 600 V	150°C
1N5406-E3/54	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.2 V @ 3 A	Standard Recovery >500ns	—	5 µA @ 600 V	150°C
1N5406-E3/73	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.2 V @ 3 A	Standard Recovery >500ns	—	5 µA @ 600 V	150°C
60S6-TP	Micro Commercial Co	600 V	6 A	1 V @ 6 A	Standard Recovery >500ns	—	5 µA @ 600 V	150°C
GI506-E3/54	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.1 V @ 9.4 A	Standard Recovery >500ns	2 µs	5 µA @ 600 V	150°C
GP30J-E3/54	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.1 V @ 3 A	Standard Recovery >500ns	5 µs	5 µA @ 600 V	175°C
GP30J-E3/73	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.1 V @ 3 A	Standard Recovery >500ns	5 µs	5 µA @ 600 V	175°C
MUR460-E3/54	Vishay General Semiconductor - Diodes Division	600 V	4 A	1.28 V @ 4 A	Fast Recovery ≤ 500ns	75 ns	10 µA @ 600 V	175°C
P300J-E3/54	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.2 V @ 3 A	Standard Recovery >500ns	2 µs	5 µA @ 600 V	150°C
RGP30J-E3/54	Vishay General Semiconductor - Diodes Division	600 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	250 ns	5 µA @ 600 V	175°C
STTH3L06	STMicroelectronics	600 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	85 ns	3 µA @ 600 V	175°C

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, consistent with the 31DF6 A0G. Selection among substitutes is determined by the following factors:

Exact Current Rating Match (3 A): Parts 1N5406-E3/54, 1N5406-E3/73, GI506-E3/54, GP30J-E3/54, GP30J-E3/73, P300J-E3/54, RGP30J-E3/54, and STTH3L06 provide direct current equivalence at 3 A average rectified current.

Higher Current Rating (4 A or 6 A): MUR460-E3/54 (4 A) and 60S6-TP (6 A) provide increased current capacity within the same 600 V voltage class and DO-201AD package, suitable for applications requiring design margin or higher current handling.

Recovery Speed Classification: The 31DF6 A0G features Fast Recovery (≤ 500ns, trr 35 ns). Substitutes with Fast Recovery characteristics include MUR460-E3/54, RGP30J-E3/54, and STTH3L06. Standard Recovery parts (1N5406 series, GI506-E3/54, GP30J series, P300J-E3/54) exhibit longer recovery times and lower forward voltage characteristics.

Operating Temperature Range: The 31DF6 A0G operates from -40°C to 150°C. Substitutes GP30J-E3/54, GP30J-E3/73, MUR460-E3/54, RGP30J-E3/54, and STTH3L06 extend the maximum junction temperature to 175°C, providing enhanced thermal performance in high-temperature applications.

Reverse Leakage Current: The 31DF6 A0G specifies 20 µA @ 600 V. All substitute parts exhibit lower reverse leakage (3 µA to 10 µA @ 600 V), representing improved leakage characteristics.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 31DF6 A0G with a part rated for 6 A current?

A: Yes. The 60S6-TP is rated for 6 A average rectified current at 600 V in the same DO-201AD package. Higher current rating provides design margin and is functionally compatible in circuits designed for 3 A operation.

Q: What is the difference between Fast Recovery and Standard Recovery diodes?

A: Fast Recovery diodes (≤ 500ns reverse recovery time) switch off more quickly than Standard Recovery diodes (>500ns). The 31DF6 A0G is Fast Recovery with 35 ns trr. Substitutes with Standard Recovery characteristics (1N5406 series, GI506-E3/54, GP30J series, P300J-E3/54) have longer recovery times and lower forward voltage but slower switching behavior.

Q: Are all substitute parts in the same DO-201AD package?

A: Yes. All listed substitute parts use the DO-201AD axial through-hole package, ensuring mechanical and pin compatibility with the 31DF6 A0G.

Q: Does the 31DF6 A0G meet RoHS requirements?

A: Yes. The 31DF6 A0G is ROHS3 compliant. All listed substitute parts are also ROHS3 compliant and REACH Unaffected.

Q: What is the forward voltage difference between the 31DF6 A0G and substitute parts?

A: The 31DF6 A0G specifies 1.7 V @ 3 A. Substitute parts range from 1.0 V to 1.3 V @ rated current. Lower forward voltage reduces power dissipation in rectification circuits. Selection depends on circuit design requirements for voltage drop and thermal performance.

Q: Can I use a substitute part with a higher maximum junction temperature?

A: Yes. Substitutes with Tj (Max) of 175°C (GP30J-E3/54, GP30J-E3/73, MUR460-E3/54, RGP30J-E3/54, STTH3L06) provide extended thermal operating range compared to the 31DF6 A0G (150°C), suitable for high-temperature environments.

Q: What inventory availability should I consider?

A: Inventory levels vary among substitutes. STTH3L06 (37,300 pcs), RGP30J-E3/54 (18,712 pcs), and GP30J-E3/54 (10,350 pcs) offer high availability. Selection should balance electrical requirements with supply chain considerations.

Q: Are there packaging format differences among substitute parts?

A: Most substitutes are supplied in Cut Tape (CT) or Tape & Reel (TR) formats. The 31DF6 A0G does not specify packaging format. Verify packaging requirements for automated assembly or manual handling applications.

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