1N752A_T50A Equivalent & Substitute Parts

Part Overview

The 1N752A_T50A is a Zener diode rated at 5.6 V nominal voltage with 500 mW power dissipation and ±5% tolerance. Manufactured by onsemi in DO-35 (DO-204AH) axial through-hole package, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain the core electrical specifications while offering improved availability and compliance status from alternative manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±5%	%
Power - Max	500	mW
Impedance (Max)	11	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 200 mA
Operating Temperature	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the 1N752A_T50A:

Direct Substitutes (Identical Electrical and Package Specifications)

Direct substitutes maintain all critical electrical parameters: 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, 11 Ohms maximum impedance, and DO-35 through-hole package. These parts are interchangeable in applications where the original 1N752A_T50A was specified. Direct substitutes include 1N5232BTR, 1N5232B, and 1N752A TR PBFREE.

Similar Substitutes (Equivalent Voltage and Tolerance, Different Power Rating or Package)

Similar substitutes maintain the 5.6 V nominal voltage and ±5% tolerance but differ in power dissipation capability or package form factor. These parts are suitable for applications where higher power handling or different package configurations are acceptable. Similar substitutes include 1N4734A (1 W, DO-41), 1EZ5.6D5-TP (1 W, DO-41), 1N5919B3P-TP (3 W, DO-41), 1N5919BP-TP (1.5 W, DO-41), BZX79C5V6 (500 mW, DO-35), 1N752A-1 (500 mW, DO-35), and 1N752 (400 mW, DO-35).

Key Parameters for Substitution Determination

Voltage - Zener (Nom): Must be 5.6 V
Tolerance: Must be ±5%
Mounting Type: Must be Through Hole
Package / Case: DO-35 (DO-204AH) for direct substitutes; DO-41 (DO-204AL) acceptable for similar substitutes
Power - Max: 500 mW minimum for direct substitutes; higher ratings acceptable for similar substitutes

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Package	Product Status
1N752A_T50A	onsemi	5.6 V	±5%	500 mW	11 Ω	DO-35	Obsolete
1N5232BTR	Fairchild Semiconductor	5.6 V	±5%	500 mW	11 Ω	DO-35	Active
1N5232B	Microchip Technology	5.6 V	±5%	500 mW	11 Ω	DO-35	Active
1N752A TR PBFREE	Central Semiconductor Corp	5.6 V	±5%	500 mW	11 Ω	DO-35	Active
1N752A-1	Microchip Technology	5.6 V	±5%	500 mW	8 Ω	DO-35	Active
BZX79C5V6	Taiwan Semiconductor Corporation	5.6 V	±5%	500 mW	40 Ω	DO-35	Active
1N752	Microchip Technology	5.6 V	±10%	400 mW	11 Ω	DO-35	Active
1N4734A	Microsemi Corporation	5.6 V	±5%	1 W	5 Ω	DO-41	Active
1EZ5.6D5-TP	Micro Commercial Co	5.6 V	±5%	1 W	5 Ω	DO-41	Active
1N5919B3P-TP	Micro Commercial Co	5.6 V	±5%	3 W	2 Ω	DO-41	Active
1N5919BP-TP	Micro Commercial Co	5.6 V	±5%	1.5 W	2 Ω	DO-41	Active

Engineering Selection Recommendations

For Direct Replacement (DO-35 Package, 500 mW, ±5% Tolerance)

Select 1N5232BTR, 1N5232B, or 1N752A TR PBFREE for applications requiring identical electrical and mechanical specifications to the 1N752A_T50A. All three parts are manufactured by active suppliers with current product status. The 1N752A TR PBFREE from Central Semiconductor Corp carries RoHS3 compliance certification. The 1N5232BTR from Fairchild Semiconductor and 1N5232B from Microchip Technology are both active products with substantial inventory availability.

For Upgraded Performance (DO-35 Package, 500 mW, Enhanced Specifications)

The 1N752A-1 from Microchip Technology offers improved impedance characteristics (8 Ohms maximum versus 11 Ohms) while maintaining identical voltage, tolerance, and power specifications in the same DO-35 package. This part is suitable for applications where lower impedance provides performance benefits.

For Alternative Package Configurations (DO-41 Package, Higher Power Ratings)

When circuit board layout or thermal management requirements permit larger package dimensions, the 1N4734A (1 W), 1EZ5.6D5-TP (1 W), 1N5919BP-TP (1.5 W), and 1N5919B3P-TP (3 W) provide higher power dissipation capability in DO-41 through-hole packages. These parts maintain 5.6 V nominal voltage and ±5% tolerance specifications.

For RoHS Compliance Requirements

The 1N752A TR PBFREE and BZX79C5V6 carry RoHS3 compliance certification. The BZX79C5V6 from Taiwan Semiconductor Corporation is available in DO-35 package with 500 mW rating but exhibits higher impedance (40 Ohms maximum).

For Tolerance-Relaxed Applications

The 1N752 from Microchip Technology maintains 5.6 V nominal voltage in DO-35 package but carries ±10% tolerance and 400 mW power rating. This part is suitable only for applications where ±10% voltage tolerance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can I use 1N5232BTR as a direct replacement for 1N752A_T50A?

A: Yes. The 1N5232BTR maintains identical electrical specifications: 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and DO-35 through-hole package. Both parts are functionally equivalent for circuit applications.

Q: What is the difference between 1N752A_T50A and 1N752A-1?

A: Both parts share 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and DO-35 package. The 1N752A-1 features lower maximum impedance (8 Ohms versus 11 Ohms), which may provide improved performance in certain circuit configurations. The 1N752A-1 is manufactured by Microchip Technology and carries active product status.

Q: Why would I select 1N4734A instead of 1N752A_T50A?

A: The 1N4734A is suitable when higher power dissipation is required. It provides 1 W power rating compared to 500 mW, but uses a larger DO-41 package instead of DO-35. The 1N4734A maintains 5.6 V nominal voltage and ±5% tolerance. Select this part only if circuit board layout accommodates the larger package and higher power handling is necessary.

Q: Is BZX79C5V6 compatible with 1N752A_T50A?

A: The BZX79C5V6 maintains 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and DO-35 package. However, it exhibits higher maximum impedance (40 Ohms versus 11 Ohms). This part is compatible for applications where impedance variation is acceptable. The BZX79C5V6 carries RoHS3 compliance certification.

Q: Can I use 1N752 as a substitute for 1N752A_T50A?

A: The 1N752 is not recommended as a direct substitute. While it maintains 5.6 V nominal voltage and DO-35 package, it carries ±10% tolerance (versus ±5%) and 400 mW power rating (versus 500 mW). Use this part only in applications where ±10% voltage tolerance and reduced power handling are acceptable.

Q: What compliance certifications are available for substitute parts?

A: The 1N752A TR PBFREE and BZX79C5V6 carry RoHS3 compliance certification. All listed parts maintain REACH Unaffected status and EAR99 export classification. Verify specific compliance requirements for your application before final part selection.

Q: Are there inventory considerations when selecting substitute parts?

A: Yes. The 1N5232BTR (4,885 pcs), 1N5232B (14,532 pcs), and BZX79C5V6 (34,400 pcs) offer substantial inventory availability. The 1N752A TR PBFREE (6,462 pcs) and 1N752A-1 (740 pcs) have more limited stock. Verify current inventory status with your supplier before committing to production schedules.

Q: What is the operating temperature range for substitute parts?

A: Most substitute parts operate across -65°C to 200°C or -65°C to 175°C ranges. The 1EZ5.6D5-TP, 1N5919BP-TP, and 1N5919B3P-TP operate across -55°C to 150°C. Verify the specific operating temperature requirement for your application when selecting among available substitutes.

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