1N5224C-TAP Equivalent & Substitute Parts

Part Overview

The 1N5224C-TAP is an automotive-grade Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component is a 2.8 V, 500 mW through-hole diode in DO-35 package configuration, qualified to AEC-Q101 automotive standards. The part is currently active in production with 1110 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	2.8	V
Power - Max	500	mW
Impedance (Max)	30	Ohms
Current - Reverse Leakage @ Vr	75	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 200 mA
Package / Case	DO-204AH, DO-35, Axial	—
Mounting Type	Through Hole	—
Operating Temperature	Up to 175	°C
RoHS Status	ROHS3 Compliant	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the 1N5224C-TAP is permissible when the following electrical and mechanical parameters are maintained:

Critical Parameters for Substitution:

Nominal Zener voltage: 2.8 V
Maximum power dissipation: 500 mW
Package type: DO-35 (DO-204AH) through-hole axial configuration
Maximum impedance: 30 Ohms
Reverse leakage current: 75 µA @ 1 V
Forward voltage: 1.1 V @ 200 mA

The 1N5224B TR PBFREE from Central Semiconductor Corp meets all critical electrical parameters and mechanical compatibility requirements. Tolerance variation (±5% versus ±2%) and extended operating temperature range (-65°C to 200°C versus up to 175°C) represent differences in specification breadth rather than functional incompatibility for applications within the 1N5224C-TAP operating envelope.

Parameter Comparison

Parameter	1N5224C-TAP (Vishay)	1N5224B TR PBFREE (Central Semiconductor)	Match Status
Voltage - Zener (Nom)	2.8 V	2.8 V	Identical
Tolerance	±2%	±5%	Compatible
Power - Max	500 mW	500 mW	Identical
Impedance (Max)	30 Ohms	30 Ohms	Identical
Current - Reverse Leakage @ Vr	75 µA @ 1 V	75 µA @ 1 V	Identical
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	Identical
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	Identical
Mounting Type	Through Hole	Through Hole	Identical
Operating Temperature	Up to 175°C	-65°C to 200°C	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical

Engineering Selection Recommendations

1N5224C-TAP (Primary Part): The 1N5224C-TAP is the original specification component with AEC-Q101 automotive qualification. This part is recommended for applications requiring automotive-grade certification and the tighter ±2% voltage tolerance specification. The part maintains active production status with adequate inventory availability.

1N5224B TR PBFREE (Substitute Part): The 1N5224B TR PBFREE from Central Semiconductor Corp is functionally equivalent for applications where the ±5% tolerance specification is acceptable. This substitute maintains identical electrical performance across all critical parameters: nominal Zener voltage, maximum power dissipation, impedance, reverse leakage, and forward voltage characteristics. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications. The substitute part offers extended operating temperature range capability (-65°C to 200°C) and higher inventory availability (9854 units in stock). Packaging format is identical (DO-35 through-hole axial).

Selection between these parts depends on tolerance requirements and automotive qualification necessity for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can the 1N5224B TR PBFREE replace the 1N5224C-TAP in all applications?

A: The 1N5224B TR PBFREE is electrically and mechanically compatible with the 1N5224C-TAP for applications where ±5% Zener voltage tolerance is acceptable. If the circuit design requires the tighter ±2% tolerance of the 1N5224C-TAP, substitution is not appropriate. Applications requiring AEC-Q101 automotive qualification must use the 1N5224C-TAP.

Q: What is the difference in tolerance between these parts?

A: The 1N5224C-TAP specifies ±2% tolerance on the 2.8 V nominal Zener voltage, while the 1N5224B TR PBFREE specifies ±5% tolerance. Both parts maintain the same nominal voltage and maximum power rating. The tolerance difference affects voltage regulation precision in the circuit.

Q: Are the packages identical?

A: Yes. Both parts use the DO-35 (DO-204AH) through-hole axial package configuration. Physical dimensions, lead spacing, and PCB mounting requirements are identical, allowing direct board-level substitution without layout modification.

Q: What is the operating temperature difference?

A: The 1N5224C-TAP operates up to 175°C maximum. The 1N5224B TR PBFREE operates across -65°C to 200°C. For applications operating within the 1N5224C-TAP temperature range (up to 175°C), both parts are compatible. The substitute part offers extended low-temperature capability.

Q: Are both parts RoHS compliant?

A: Yes. Both the 1N5224C-TAP and 1N5224B TR PBFREE are ROHS3 compliant and carry identical REACH unaffected status.

Q: Which part should be selected for automotive applications?

A: The 1N5224C-TAP carries AEC-Q101 automotive qualification and is the specified choice for automotive-grade circuit designs. The 1N5224B TR PBFREE does not carry automotive qualification designation.

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