Equivalent & Substitute Parts for 1N754A/TR

Part Overview

The 1N754A/TR is a Zener diode designed for voltage regulation, rated at 6.8 V nominal Zener voltage with a 500 mW maximum power dissipation and a ±5% voltage tolerance. It is supplied in a through-hole DO-204AH (DO-35, Axial) package and operates in the -65°C to 175°C temperature range. The part is currently active, but alternative models may be required for compatibility across suppliers, enhanced inventory options, or procurement flexibility.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	6.8 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max) (Zzt)	5 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 4 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial

Substitute Part Grouping Explanation

Substitution is based strictly on key electrical and mechanical parameters: nominal Zener voltage (Vz), tolerance, maximum power rating, maximum impedance (Zzt), reverse leakage current, forward voltage at specified current, operating temperature range, mounting type, and package/case. Equivalent or substitute parts must match these parameters within the defined limits to ensure full electrical and mechanical compatibility.

Parameter Comparison

Parameter	1N754A/TR (Microchip Technology)	1N5235B-TAP (Vishay General Semiconductor)
Voltage - Zener (Nom) (Vz)	6.8 V	6.8 V
Tolerance	±5%	±5%
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	5 Ohms	5 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 4 V	3 µA @ 5 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial

Engineering Selection Recommendations

Both the 1N754A/TR and 1N5235B-TAP are active products and meet REACH requirements. The 1N5235B-TAP is ROHS3 compliant and AEC-Q101 qualified for automotive applications. Either part can be selected based on inventory availability, compliance, and required certifications provided in the input.

Frequently Asked Questions (FAQ)

Q: What are the key criteria for substituting a Zener diode like 1N754A/TR?
A: Allowed substitutes must match Zener voltage, tolerance, power rating, impedance, leakage current, forward voltage at the specified test current, operating temperature range, mounting type, and package/case.

Q: Is the 1N5235B-TAP compatible mechanically with 1N754A/TR?
A: Both diodes use the DO-204AH (DO-35, Axial) package and are through-hole mount, ensuring mechanical compatibility.

Q: Are there differences in environmental or compliance status between these parts?
A: 1N754A/TR and 1N5235B-TAP are REACH unaffected. The 1N5235B-TAP also lists ROHS3 compliance and AEC-Q101 qualification.

Q: Can I mix 1N754A/TR and 1N5235B-TAP on the same PCB?
A: Yes, both parts have equivalent electrical and mechanical characteristics according to the provided parameters.

Q: Does the tape and reel or cut tape packaging affect substitution?
A: Packaging type (TR vs. CT) affects handling but not electrical or mechanical interchangeability based on the specified parameters.

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