1N4936-TP Equivalent & Substitute Parts

Part Overview

The 1N4936-TP is a general-purpose rectifier diode rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. Manufactured by Micro Commercial Co, this part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute parts maintain the same electrical ratings and mechanical form factor while offering active product status and improved availability.

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 @ 1	V @ A
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
Technology	Standard	-
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	-

Substitute Part Grouping Explanation

Substitute parts for the 1N4936-TP are grouped into two categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitutes maintain identical electrical specifications and are sourced from the same manufacturer (Micro Commercial Co). These parts share the same base product number (1N4936) or equivalent fast-recovery characteristics with matching voltage and current ratings.

Parametric Equivalents provide identical or superior electrical performance across all critical parameters: 400 V reverse voltage rating, 1 A average rectified current, fast-recovery speed classification, and DO-41 through-hole package. These parts differ in reverse recovery time (trr), forward voltage (Vf), or capacitance characteristics but remain functionally interchangeable within the specified electrical envelope.

Similar Parts from alternative manufacturers (Taiwan Semiconductor Corporation, Vishay General Semiconductor) meet the core voltage and current requirements but may exhibit variations in recovery speed classification, reverse leakage current, or operating temperature range. These parts are suitable for applications where the primary design constraint is the 400 V / 1 A rating.

The following parameters determine substitution eligibility:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Current - Average Rectified (Io): 1 A minimum
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial equivalent
Technology: Standard or Fast Recovery

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Speed Classification	Packaging	Inventory [Pcs]
1N4936-TP	Micro Commercial Co	Obsolete	400	1	1.3	200	Fast Recovery ≤ 500ns	DO-41	918
1N4936GP-TP	Micro Commercial Co	Active	400	1	1.2	200	Fast Recovery ≤ 500ns	Tape & Reel (TR)	1052
FR104GP-TP	Micro Commercial Co	Active	400	1	1.3	150	Fast Recovery ≤ 500ns	Tape & Reel (TR)	824
SF16G-TP	Micro Commercial Co	Active	400	1	1.3	35	Fast Recovery ≤ 500ns	Cut Tape (CT)	1102
UF4004GP-TP	Micro Commercial Co	Active	400	1	1.3	50	Fast Recovery ≤ 500ns	Cut Tape (CT)	15757
1N4004GHB0G	Taiwan Semiconductor Corporation	Active	400	1	1.0	-	Standard Recovery > 500ns	DO-204AL (DO-41)	785
1N4246GP-E3/73	Vishay General Semiconductor	Active	400	1	1.2	-	Standard Recovery > 500ns	DO-204AL (DO-41)	1149
1N4936-E3/53	Vishay General Semiconductor	Active	400	1	1.2	200	Fast Recovery ≤ 500ns	DO-204AL (DO-41)	1034
1N4944GP-E3/73	Vishay General Semiconductor	Active	400	1	1.3	150	Fast Recovery ≤ 500ns	DO-204AL (DO-41)	1137
BYW27-400GP-E3/54	Vishay General Semiconductor	Active	400	1	1.0	3000	Standard Recovery > 500ns	DO-204AL (DO-41)	867
GP10-4004E-E3/73	Vishay General Semiconductor	Active	400	1	-	-	Standard Recovery > 500ns	DO-204AL (DO-41)	783

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement)

The 1N4936GP-TP from Micro Commercial Co is the primary direct substitute. This part maintains identical electrical specifications to the 1N4936-TP with improved forward voltage performance (1.2 V vs. 1.3 V @ 1 A) and active product status. The packaging format (Tape & Reel) is suitable for automated assembly processes. RoHS3 compliance and unlimited moisture sensitivity level (MSL 1) are maintained.

Secondary Substitutes (Parametric Equivalents)

The FR104GP-TP, SF16G-TP, and UF4004GP-TP are parametric equivalents from Micro Commercial Co. All three maintain the 400 V / 1 A electrical envelope and fast-recovery speed classification. The SF16G-TP offers the fastest reverse recovery time (35 ns), while UF4004GP-TP provides the highest inventory availability (15,757 pcs). These parts are suitable for applications where recovery speed performance is beneficial but not critical.

Alternative Substitutes (Similar Parts)

Parts from Vishay General Semiconductor (1N4936-E3/53, 1N4944GP-E3/73) and Taiwan Semiconductor Corporation (1N4004GHB0G) meet the core 400 V / 1 A requirements. The 1N4936-E3/53 from Vishay maintains fast-recovery characteristics with identical 200 ns reverse recovery time and extended operating temperature range (-65°C to 175°C vs. -55°C to 150°C). The 1N4004GHB0G includes AEC-Q101 automotive qualification, suitable for automotive applications.

Compliance and Certification

All substitute parts maintain RoHS3 compliance and REACH unaffected status. Operating temperature ranges vary: Micro Commercial Co parts operate from -55°C to 150°C, while Vishay parts extend to -65°C to 175°C. Selection should account for application temperature requirements and thermal management considerations.

Frequently Asked Questions (FAQ)

Q: Can the 1N4936GP-TP directly replace the 1N4936-TP in existing designs?

A: Yes. The 1N4936GP-TP maintains identical electrical specifications (400 V reverse voltage, 1 A average rectified current, 200 ns reverse recovery time) and mechanical form factor (DO-41 through-hole package). The primary difference is packaging format (Tape & Reel vs. bulk) and improved forward voltage performance (1.2 V vs. 1.3 V @ 1 A). Active product status ensures long-term availability.

Q: What is the difference between fast-recovery and standard-recovery diodes in this voltage/current class?

A: Fast-recovery diodes (1N4936-TP, 1N4936GP-TP, FR104GP-TP, SF16G-TP, UF4004GP-TP, 1N4936-E3/53, 1N4944GP-E3/73) exhibit reverse recovery times ≤ 500 ns and are optimized for switching applications. Standard-recovery diodes (1N4004GHB0G, 1N4246GP-E3/73, BYW27-400GP-E3/54, GP10-4004E-E3/73) have reverse recovery times > 500 ns and are suitable for general rectification applications. Both classes meet the 400 V / 1 A rating.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. The UF4004GP-TP offers the highest inventory availability (15,757 pcs), followed by SF16G-TP (1,102 pcs) and 1N4936GP-TP (1,052 pcs). For high-volume production, UF4004GP-TP provides supply security. For lower-volume applications, all listed substitutes maintain adequate stock levels.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Reel, Cut Tape, or bulk) does not affect electrical performance. Format selection depends on assembly process requirements: Tape & Reel for automated pick-and-place systems, Cut Tape for semi-automated processes, and bulk for manual assembly. All substitute parts are available in DO-41 through-hole configuration.

Q: What is the significance of reverse recovery time (trr) variation among substitutes?

A: Reverse recovery time affects switching speed and switching losses in high-frequency applications. The 1N4936-TP specifies 200 ns. Substitutes range from 35 ns (SF16G-TP) to 3 µs (BYW27-400GP-E3/54). Faster recovery times reduce switching losses but may increase cost. For general rectification at line frequency (50/60 Hz), recovery time differences are not significant.

Q: Are Vishay parts suitable for designs originally specified with Micro Commercial Co parts?

A: Yes, provided electrical specifications are met. Vishay parts (1N4936-E3/53, 1N4944GP-E3/73, 1N4246GP-E3/73, BYW27-400GP-E3/54, GP10-4004E-E3/73) maintain the 400 V / 1 A rating and DO-41 package. Extended operating temperature ranges (-65°C to 175°C) and improved reverse leakage characteristics (1 µA vs. 5 µA in some cases) may provide design advantages. Qualification requirements and supply chain considerations should be evaluated.

Q: Is the 1N4004GHB0G from Taiwan Semiconductor Corporation a suitable substitute?

A: The 1N4004GHB0G meets the core 400 V / 1 A electrical requirements and includes AEC-Q101 automotive qualification. However, it is classified as standard-recovery (> 500 ns) rather than fast-recovery. This part is suitable for general rectification applications and automotive designs but may not be appropriate for high-frequency switching applications where the original fast-recovery specification is critical.

Q: What compliance certifications are maintained across all substitutes?

A: All substitute parts maintain RoHS3 compliance and REACH unaffected status. Moisture sensitivity level (MSL 1 - Unlimited) is consistent across all parts. ECCN classification (EAR99) and HTSUS code (8541.10.0080) are identical. No additional certifications or qualifications are introduced by substitution, except for the AEC-Q101 automotive qualification on the 1N4004GHB0G.

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