RGP10G-M3/73 Equivalent & Substitute Parts

Part Overview

The RGP10G-M3/73 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-204AL (DO-41) axial through-hole package. This device is part of the SUPERECTIFIER® series and features fast recovery characteristics with a reverse recovery time of 150 ns.

The RGP10G-M3/73 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	V
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the RGP10G-M3/73 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Voltage Rating: 400 V DC reverse voltage (Vr) maximum
Current Rating: 1 A average rectified current (Io)
Package Type: DO-204AL (DO-41) axial through-hole configuration
Speed Classification: Fast recovery characteristics (≤ 500ns reverse recovery time for currents > 200mA)
Operating Temperature Range: -65°C to 175°C junction temperature
Compliance: ROHS3 compliance and REACH unaffected status

Substitute parts are divided into two categories:

Category A - Parametric Equivalents (Vishay SUPERECTIFIER® Series): Parts with identical electrical specifications and active product status, manufactured by Vishay General Semiconductor - Diodes Division. These include RGP10G-E3/73, RGP10G-E3/53, RGP10GE-E3/73, RGP10GE-E3/53, 1N4944GP-E3/73, BA157GP-E3/73, and BYD33GGPHE3/73.

Category B - Manufacturer-Recommended Alternatives: Parts from alternative manufacturers (onsemi, Microchip Technology, Diodes Incorporated) that meet the core electrical specifications but may have variations in secondary parameters such as reverse recovery time, forward voltage, or reverse leakage current.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	Temp Range [°C]
RGP10G-M3/73	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Obsolete	-65 to 175
RGP10G-E3/73	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
RGP10G-E3/53	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
RGP10GE-E3/73	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
RGP10GE-E3/53	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
1N4944GP-E3/73	Vishay	400	1	1.3 @ 1 A	150	1 @ 400 V	DO-204AL	Active	-65 to 175
BA157GP-E3/73	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
BYD33GGPHE3/73	Vishay	400	1	1.3 @ 1 A	150	5 @ 400 V	DO-204AL	Active	-65 to 175
1N4936RLG	onsemi	400	1	1.2 @ 1 A	300	5 @ 400 V	DO-204AL	Not For New Designs	-65 to 150
1N5617	Microchip Technology	400	1	1.6 @ 3 A	150	0.5 @ 400 V	Axial	Active	-65 to 175
D4G-T	Diodes Incorporated	400	1	1 @ 1 A	2000	5 @ 400 V	T-1	Active	-65 to 150

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement)

The following parts are recommended as direct substitutes for the RGP10G-M3/73:

RGP10G-E3/73: Identical electrical specifications and package configuration. Active product status with ROHS3 compliance. Same SUPERECTIFIER® series designation. Highest compatibility for direct board-level substitution.
RGP10GE-E3/73: Identical electrical specifications and package configuration. Active product status with ROHS3 compliance. Same SUPERECTIFIER® series designation. Functionally equivalent to RGP10G-E3/73.
BA157GP-E3/73: Identical electrical specifications and package configuration. Active product status with ROHS3 compliance. Functionally equivalent alternative within Vishay product portfolio.
1N4944GP-E3/73: Identical electrical specifications and package configuration. Active product status with ROHS3 compliance. Lower reverse leakage current (1 µA vs. 5 µA) provides improved performance margin in low-leakage applications.

Secondary Substitutes (Conditional Use)

1N4936RLG (onsemi): Meets voltage and current ratings. Reverse recovery time of 300 ns exceeds the 150 ns specification of the original part. Product status is "Not For New Designs." Operating temperature maximum is 150°C versus 175°C. Suitable for legacy system maintenance only.
1N5617 (Microchip Technology): Meets voltage and current ratings with improved reverse leakage (0.5 µA). Reverse recovery time of 150 ns matches the original specification. RoHS non-compliant status requires evaluation against system compliance requirements. Active product status supports ongoing availability.
D4G-T (Diodes Incorporated): Meets voltage and current ratings. Reverse recovery time of 2 µs (2000 ns) significantly exceeds the 150 ns specification, indicating standard recovery rather than fast recovery characteristics. Package is T-1 (different from DO-204AL). Operating temperature maximum is 150°C. Suitable only for applications where recovery speed is not critical.

Compliance Considerations

All primary substitutes maintain ROHS3 compliance and REACH unaffected status consistent with the original part. The 1N5617 is RoHS non-compliant and requires explicit compliance verification before use in regulated applications.

Frequently Asked Questions (FAQ)

Q1: Can RGP10G-E3/73 be used as a direct replacement for RGP10G-M3/73?

Yes. RGP10G-E3/73 is a direct replacement. Both parts share identical electrical specifications (400 V, 1 A, 150 ns recovery time), the same DO-204AL package, and SUPERECTIFIER® series designation. The primary difference is product status: RGP10G-M3/73 is obsolete while RGP10G-E3/73 is active. The suffix change from M3/73 to E3/73 reflects packaging or manufacturing process updates while maintaining electrical equivalence.

Q2: What is the difference between fast recovery (150 ns) and standard recovery (2000 ns) diodes?

Reverse recovery time (trr) determines how quickly a diode transitions from conducting to blocking state when reverse bias is applied. Fast recovery diodes (≤ 500 ns) minimize switching losses and are required in high-frequency switching applications. Standard recovery diodes (> 500 ns) are suitable for low-frequency rectification where switching speed is not critical. The D4G-T with 2000 ns recovery time is not suitable for applications requiring the fast recovery characteristics of the original RGP10G-M3/73.

Q3: Why does 1N4944GP-E3/73 have lower reverse leakage (1 µA) than the original part (5 µA)?

Lower reverse leakage current indicates improved device quality and reduced thermal generation of minority carriers. This is a performance enhancement rather than a specification violation. The 1N4944GP-E3/73 operates within the same voltage and current ratings but with superior leakage characteristics, making it suitable for applications sensitive to leakage current such as precision rectification or high-impedance circuits.

Q4: Can D4G-T be used in place of RGP10G-M3/73?

D4G-T is not recommended as a direct substitute. While both parts are rated for 400 V and 1 A, the D4G-T has a reverse recovery time of 2000 ns compared to 150 ns for the original part. This 13-fold increase in recovery time results in significantly higher switching losses and is incompatible with applications requiring fast recovery characteristics. Additionally, the D4G-T uses a T-1 package rather than DO-204AL, requiring different board layout and mechanical mounting.

Q5: What does "Not For New Designs" mean for the 1N4936RLG?

"Not For New Designs" indicates that onsemi has discontinued active development and marketing of this part. While existing inventory may be available, the manufacturer does not recommend its use in new product designs. This status typically precedes formal obsolescence and signals that alternative parts should be selected for long-term design stability and supply chain continuity.

Q6: Is the 1N5617 suitable for applications requiring ROHS3 compliance?

No. The 1N5617 is marked as RoHS non-compliant. While it meets the electrical specifications of the RGP10G-M3/73, its use in systems requiring RoHS3 compliance would violate regulatory requirements. The 1N5617 is suitable only for applications where RoHS compliance is not mandated or where legacy system maintenance permits non-compliant components.

Q7: What is the significance of the package designation change from DO-204AL to T-1?

DO-204AL (DO-41) and T-1 are different axial through-hole package formats with different physical dimensions and lead configurations. While both are through-hole packages suitable for wave soldering, they are not mechanically interchangeable on a printed circuit board. Substituting D4G-T (T-1 package) for RGP10G-M3/73 (DO-204AL package) requires board redesign and is not a direct replacement.

Q8: Which substitute part offers the best overall compatibility with the original RGP10G-M3/73?

RGP10G-E3/73 and RGP10GE-E3/73 offer the best overall compatibility. Both parts are manufactured by Vishay, maintain identical electrical specifications, use the same DO-204AL package, and carry active product status with full ROHS3 compliance. These parts represent direct functional equivalents with no design or layout modifications required.

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