1N4753A-T Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4753A-T is a 36 V, 1 W zener diode manufactured by Diodes Incorporated in DO-41 through-hole package configuration. This component is classified as obsolete, with 4,600 units currently in stock. The part operates across a temperature range of -65°C to 175°C and maintains ±5% voltage tolerance. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	36	V
Power - Maximum	1	W
Tolerance	±5%	—
Impedance (Maximum)	50	Ohms
Current - Reverse Leakage @ 27.4 V	5	µA
Voltage - Forward (Maximum) @ 200 mA	1.2	V
Operating Temperature Range	-65 to 175	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—

Substitute Part Grouping Explanation

Substitution of the 1N4753A-T is determined by the following critical parameters: zener voltage (36 V nominal), power dissipation rating (1 W or higher), voltage tolerance (±5% or tighter), impedance characteristics (50 Ohms or lower), reverse leakage current (5 µA or lower @ 27.4 V), forward voltage drop (1.2 V or lower @ 200 mA), and through-hole mounting in DO-41 or DO-204AL package format.

Substitute parts are grouped into three categories:

Direct Equivalents: Parts with identical electrical specifications (36 V, 1 W, ±5% tolerance, 50 Ohms impedance, 5 µA reverse leakage, 1.2 V forward voltage) and active product status from established manufacturers.

Upgraded Equivalents: Parts with superior electrical performance (higher power ratings, lower impedance, lower reverse leakage, extended temperature ranges, or improved compliance certifications) while maintaining 36 V zener voltage and through-hole DO-41 packaging.

Alternative Equivalents: Parts with modified tolerance specifications (±10%) or different reverse leakage characteristics that remain functionally compatible within the 36 V zener voltage class and through-hole package category.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (W)	Tolerance	Zzt (Ohms)	Ir @ 27.4V (µA)	Vf @ 200mA (V)	Temp Range (°C)	Status	Package
1N4753A-T	Diodes Incorporated	36	1	±5%	50	5	1.2	-65 to 175	Obsolete	DO-41
1N4753AP/TR8	Microchip Technology	36	1	±5%	50	5	1.2	-65 to 150	Active	DO-204AL
1N4753A	Lumimax Optoelectronic Technology	36	1	±5%	50	5	1.2	-65 to 200	Active	DO-41G
1N4753A-T50A	Fairchild Semiconductor	36	1	±5%	50	5	—	-65 to 200	Active	DO-204AL
1EZ36D5-TP	Micro Commercial Co	36	1	±5%	50	5	1.2	-55 to 150	Active	DO-41
1N4753 G	Microchip Technology	36	1	±10%	50	5	1.2	-65 to 175	Active	DO-204AL
1N4753AG	Microsemi Corporation	36	1	±5%	50	5	1.2	-65 to 175	Active	DO-204AL
1N5938BP-TP	Micro Commercial Co	36	1.5	±5%	38	1	1.5	-55 to 175	Active	DO-41
1N5938B3P-AP	Micro Commercial Co	36	3	±5%	38	1	1.5	-55 to 175	Active	DO-41
1N5938B3P-TP	Micro Commercial Co	36	3	±5%	38	1	1.5	-55 to 175	Active	DO-41
2EZ36D5	Microsemi Corporation	36	2	±5%	25	0.5	1.2	-65 to 150	Active	DO-204AL
2EZ36D5-TP	Microsemi Corporation	36	2	±5%	25	0.5	1.2	-65 to 150	Active	DO-204AL

Engineering Selection Recommendations

Direct Equivalent Selection: For applications requiring identical electrical performance and active product status, 1N4753AP/TR8 (Microchip Technology), 1N4753AG (Microsemi Corporation), and 1EZ36D5-TP (Micro Commercial Co) provide direct functional equivalence with 36 V zener voltage, 1 W power rating, and ±5% tolerance. The 1N4753A (Lumimax Optoelectronic Technology) offers extended operating temperature range to 200°C while maintaining all core electrical specifications.

Upgraded Performance Selection: The 1N5938BP-TP, 1N5938B3P-AP, and 1N5938B3P-TP (all Micro Commercial Co) provide enhanced power dissipation (1.5 W to 3 W) with reduced impedance (38 Ohms) and lower reverse leakage (1 µA), suitable for applications requiring thermal margin or lower dynamic impedance. The 2EZ36D5 and 2EZ36D5-TP (Microsemi Corporation) deliver 2 W power rating with significantly reduced impedance (25 Ohms) and reverse leakage (0.5 µA), appropriate for precision voltage regulation circuits.

Compliance Considerations: The 1N4753A-T (original part) and 1N5938BP-TP are ROHS3 compliant. The 1N4753AP/TR8, 1N4753 G, and 1N4753AG are RoHS non-compliant. The 2EZ36D5 and 2EZ36D5-TP are ROHS3 compliant. Selection should account for end-product RoHS requirements.

Temperature Range Considerations: Applications operating above 175°C require the 1N4753A (Lumimax, -65°C to 200°C) or 1N4753A-T50A (Fairchild, -65°C to 200°C). Applications with lower temperature minimums (-55°C minimum acceptable) can utilize 1EZ36D5-TP, 1N5938BP-TP, 1N5938B3P-AP, or 1N5938B3P-TP.

Tolerance Considerations: Applications requiring ±5% voltage tolerance exclude 1N4753 G (±10% tolerance). All other listed substitutes maintain ±5% tolerance specification.

Frequently Asked Questions (FAQ)

Q: Can 1N4753A-T be directly replaced with 1N4753AP/TR8?

A: Yes. Both parts share identical electrical specifications: 36 V zener voltage, 1 W power rating, ±5% tolerance, 50 Ohms impedance, 5 µA reverse leakage, and 1.2 V forward voltage. The primary difference is packaging format (Tape & Reel vs. bulk) and operating temperature upper limit (150°C vs. 175°C). For applications operating below 150°C, this substitution is direct.

Q: What is the difference between 1N4753A-T and 1N5938BP-TP?

A: The 1N5938BP-TP provides higher power dissipation (1.5 W vs. 1 W), lower impedance (38 Ohms vs. 50 Ohms), and lower reverse leakage (1 µA vs. 5 µA). Both maintain 36 V zener voltage and ±5% tolerance. The 1N5938BP-TP is suitable for applications requiring enhanced thermal performance or lower dynamic impedance characteristics.

Q: Can 1N4753A-T be replaced with 2EZ36D5?

A: Yes, with performance enhancement. The 2EZ36D5 maintains 36 V zener voltage and ±5% tolerance but provides doubled power rating (2 W vs. 1 W), significantly reduced impedance (25 Ohms vs. 50 Ohms), and lower reverse leakage (0.5 µA vs. 5 µA). This substitution is suitable for all applications designed for the original part and provides additional thermal margin.

Q: Is 1N4753 G a suitable substitute for 1N4753A-T?

A: The 1N4753 G is functionally compatible but with relaxed tolerance specification (±10% vs. ±5%). This part is suitable only for applications where ±10% voltage tolerance is acceptable. All other electrical parameters remain equivalent.

Q: What packaging formats are available for 36 V, 1 W zener diodes?

A: All listed substitutes utilize through-hole axial packaging in DO-41 or DO-204AL format. The 1N4753A specifies DO-41G variant. These packages are mechanically and electrically interchangeable for through-hole PCB assembly.

Q: Which substitute offers the best compliance profile?

A: The 1N5938BP-TP and 2EZ36D5 are ROHS3 compliant. The 1N4753A-T (original part) is also ROHS3 compliant. For applications requiring RoHS compliance, these three parts are preferred selections.

Q: Can substitutes with higher power ratings be used in place of 1N4753A-T?

A: Yes. The 1N5938BP-TP (1.5 W), 1N5938B3P-AP (3 W), 1N5938B3P-TP (3 W), and 2EZ36D5 (2 W) all maintain 36 V zener voltage and can be used in applications designed for 1 W devices. Higher power ratings provide thermal margin and are backward compatible with lower power designs.

Q: What is the inventory status of active substitutes?

A: 1N4753AP/TR8 (766 units), 1N4753A (39,100 units), 1N4753A-T50A (87,625 units), 1EZ36D5-TP (851 units), 1N4753 G (860 units), 1N4753AG (1,046 units), 1N5938B3P-AP (949 units), 1N5938B3P-TP (978 units), 1N5938BP-TP (1,011 units), and 2EZ36D5 (11,100 units) are currently in stock.

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