1N4936GP-TP Equivalent & Substitute Parts

Part Overview

The 1N4936GP-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This diode is classified as Active product status and is RoHS3 compliant. Substitute parts are identified based on matching electrical specifications (voltage rating, current rating, forward voltage, reverse recovery time) and mechanical compatibility (through-hole mounting, DO-41/DO-204AL package equivalence). Alternative models become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate specific performance characteristics such as faster recovery time or automotive qualification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	V
Reverse Recovery Time (trr)	200	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 1N4936GP-TP are grouped into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share all critical electrical specifications: 400 V reverse voltage rating, 1 A average rectified current, through-hole mounting, and DO-41/DO-204AL package compatibility. These parts maintain the same operating temperature range (-55°C to 150°C) and RoHS3 compliance. Parametric equivalents may differ in reverse recovery time (trr), forward voltage (Vf), or reverse leakage current within acceptable ranges that do not compromise circuit function.

Similar Parts meet the core voltage and current requirements but may exhibit variations in secondary parameters such as reverse recovery time, forward voltage characteristics, or capacitance. These parts are suitable for applications where the primary part is unavailable and the circuit design tolerates minor performance variations.

Key substitution criteria:

Voltage - DC Reverse (Vr) (Max): 400 V (mandatory match)
Current - Average Rectified (Io): 1 A (mandatory match)
Mounting Type: Through Hole (mandatory match)
Package / Case: DO-41 or DO-204AL equivalent (mandatory match)
Operating Temperature Range: -55°C to 150°C (mandatory match)
RoHS Status: ROHS3 Compliant (mandatory match)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ 400V [µA]	Package	Product Status	Grade
1N4936GP-TP	Micro Commercial Co	400	1	1.2	200	5	DO-41	Active	Standard
UF4004GP-TP	Micro Commercial Co	400	1	1.3	50	5	DO-41	Active	Standard
UF4004-M3/54	Vishay General Semiconductor - Diodes Division	400	1	1.0	50	10	DO-204AL (DO-41)	Active	Standard
1N4936G	Taiwan Semiconductor Corporation	400	1	1.2	200	5	DO-204AL (DO-41)	Active	Standard
1N4936GH	Taiwan Semiconductor Corporation	400	1	1.2	200	5	DO-204AL (DO-41)	Active	Automotive (AEC-Q101)
FR104G A0G	Taiwan Semiconductor Corporation	400	1	1.3	150	5	DO-204AL (DO-41)	Active	Standard
HER105G	Taiwan Semiconductor Corporation	400	1	1.3	50	5	DO-204AL (DO-41)	Active	Standard
SF16GH	Taiwan Semiconductor Corporation	400	1	1.3	35	5	DO-204AL (DO-41)	Active	Automotive (AEC-Q101)
UF4005-G	Comchip Technology	400	1	1.3	50	5	DO-41	Obsolete	Standard

Engineering Selection Recommendations

Active Status Parts (Recommended for New Designs):

The following substitute parts maintain Active product status and are suitable for direct replacement in new designs and production environments:

1N4936G (Taiwan Semiconductor Corporation): Parametric equivalent with identical electrical characteristics (Vf = 1.2 V, trr = 200 ns). Provides direct functional replacement with standard grade qualification.
1N4936GH (Taiwan Semiconductor Corporation): Parametric equivalent with AEC-Q101 automotive qualification. Suitable for applications requiring automotive-grade components with identical electrical performance to the main part.
UF4004GP-TP (Micro Commercial Co): Parametric equivalent with faster reverse recovery time (trr = 50 ns). Offers improved switching performance while maintaining 400 V / 1 A ratings. Forward voltage slightly elevated at 1.3 V.
UF4004-M3/54 (Vishay General Semiconductor - Diodes Division): Similar part with faster recovery time (trr = 50 ns) and lower forward voltage (Vf = 1.0 V). Reverse leakage current elevated to 10 µA at 400 V.
FR104G A0G (Taiwan Semiconductor Corporation): Parametric equivalent with moderate reverse recovery time (trr = 150 ns). Forward voltage at 1.3 V.
HER105G (Taiwan Semiconductor Corporation): Parametric equivalent with fast reverse recovery time (trr = 50 ns). Forward voltage at 1.3 V.
SF16GH (Taiwan Semiconductor Corporation): Parametric equivalent with fastest reverse recovery time (trr = 35 ns) and AEC-Q101 automotive qualification. Suitable for high-speed switching applications requiring automotive-grade components.

Obsolete Status Parts (Not Recommended):

UF4005-G (Comchip Technology): Classified as Obsolete product status. Not recommended for new designs or long-term production use despite electrical compatibility.

Selection Criteria by Application:

For standard industrial applications, 1N4936G or UF4004GP-TP provide direct compatibility. For automotive applications, 1N4936GH or SF16GH are required due to AEC-Q101 qualification. For high-speed switching circuits, SF16GH or HER105G offer faster recovery times (35 ns and 50 ns respectively).

Frequently Asked Questions (FAQ)

Q: Can I substitute 1N4936GP-TP with UF4004GP-TP?

A: Yes. Both parts share identical voltage (400 V) and current (1 A) ratings, through-hole mounting, and DO-41 package compatibility. UF4004GP-TP offers faster reverse recovery time (50 ns vs. 200 ns), which improves switching performance. Forward voltage is slightly higher at 1.3 V compared to 1.2 V. Both are Active status and RoHS3 compliant.

Q: What is the difference between 1N4936G and 1N4936GH?

A: Both parts are electrically identical with 400 V reverse voltage, 1 A current, 1.2 V forward voltage, and 200 ns reverse recovery time. The primary difference is that 1N4936GH carries AEC-Q101 automotive qualification, making it suitable for automotive applications. 1N4936G is standard grade.

Q: Why do some substitute parts have faster reverse recovery times?

A: Reverse recovery time (trr) indicates how quickly the diode transitions from conducting to blocking state. Faster recovery times (35-50 ns) reduce switching losses and improve efficiency in high-frequency applications. The 1N4936GP-TP has 200 ns recovery time, which is acceptable for standard rectification but slower than alternatives like SF16GH (35 ns) or HER105G (50 ns).

Q: Are DO-41 and DO-204AL packages interchangeable?

A: Yes. DO-41 and DO-204AL are equivalent package designations for the same through-hole axial lead diode form factor. Parts specified as DO-204AL (DO-41) or DO-41 are mechanically and electrically compatible for PCB mounting and circuit function.

Q: Can I use UF4005-G as a substitute?

A: UF4005-G meets the electrical requirements (400 V, 1 A, through-hole DO-41 package) but is classified as Obsolete product status. Use is not recommended for new designs or production environments where long-term availability and supply chain continuity are required.

Q: Which substitute part should I use for automotive applications?

A: For automotive applications, select either 1N4936GH or SF16GH, both carrying AEC-Q101 qualification. SF16GH offers faster reverse recovery time (35 ns) if high-speed switching is required. 1N4936GH provides identical electrical characteristics to the main part with automotive qualification.

Q: What does RoHS3 compliance mean?

A: RoHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component meets EU environmental standards by restricting the use of hazardous materials including lead, cadmium, mercury, and certain flame retardants. All listed substitute parts maintain RoHS3 compliance, ensuring regulatory compatibility.

Q: How do I select between multiple Active status substitutes?

A: Selection depends on application requirements. For standard rectification with no specific performance demands, 1N4936G provides direct electrical equivalence. For faster switching, choose UF4004GP-TP, HER105G, or SF16GH based on recovery time needs. For automotive use, select 1N4936GH or SF16GH. For lowest forward voltage, UF4004-M3/54 offers 1.0 V at 1 A.

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