1N5233C-TAP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5233C-TAP is a 6 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in DO-35 (DO-204AH) axial through-hole package. This component is classified as an active product with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs while maintaining functional equivalence within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	6	V
Power - Maximum	500	mW
Impedance (Maximum)	7	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 3.5 V
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Base Product Number	1N5233	—

Substitute Part Grouping Explanation

Substitute parts for the 1N5233C-TAP are qualified based on the following criteria:

Core Electrical Parameters (Must Match):

Zener voltage: 6 V nominal
Maximum power dissipation: 500 mW
Maximum impedance: 7 Ohms
Reverse leakage current: 5 µA @ 3.5 V

Mechanical Parameters (Must Match):

Mounting type: Through Hole
Package / Case: DO-204AH, DO-35, Axial

Allowable Variations:

Voltage tolerance: ±2% to ±5% acceptable
Forward voltage (Vf) @ 200 mA: 1.1 V to 1.5 V acceptable
Operating temperature range: Minimum -65°C to maximum 200°C acceptable
RoHS and REACH compliance status: Variations permitted

The substitute parts 1N5233B and 1N5233BTR share the same base product number (1N5233) and maintain electrical and mechanical equivalence within the specified parameter windows.

Parameter Comparison

Parameter	1N5233C-TAP (Main)	1N5233B (Substitute)	1N5233BTR (Substitute)
Manufacturer	Vishay General Semiconductor - Diodes Division	Microchip Technology	onsemi
Voltage - Zener (Nom)	6 V	6 V	6 V
Tolerance	±2%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW
Impedance (Max)	7 Ohms	7 Ohms	7 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 3.5 V	5 µA @ 3.5 V	5 µA @ 3.5 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.5 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	175°C	-65°C ~ 175°C	-65°C ~ 200°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

1N5233C-TAP (Vishay): Primary selection for applications requiring AEC-Q101 automotive qualification, ROHS3 compliance, and ±2% voltage tolerance. Tighter tolerance specification provides enhanced voltage regulation accuracy.

1N5233B (Microchip): Functionally equivalent substitute with relaxed ±5% voltage tolerance. RoHS non-compliance restricts use in applications with mandatory RoHS requirements. Suitable for non-regulated markets and legacy designs.

1N5233BTR (onsemi): Functionally equivalent substitute with ROHS3 compliance and extended operating temperature range (-65°C to 200°C). Cut Tape packaging provides alternative supply format. Recommended for applications requiring broader temperature performance and RoHS compliance.

All three parts maintain identical core electrical parameters (6 V nominal, 500 mW power, 7 Ohms impedance, 5 µA reverse leakage) and mechanical compatibility (DO-35 through-hole axial package). Selection between substitutes depends on compliance requirements, packaging format availability, and temperature operating range specifications.

Frequently Asked Questions (FAQ)

Q: Can 1N5233B replace 1N5233C-TAP in automotive applications?

A: The 1N5233B lacks AEC-Q101 qualification and ROHS3 compliance. Substitution is not suitable for automotive applications requiring these certifications. The 1N5233BTR is the appropriate automotive-grade substitute.

Q: What is the difference between ±2% and ±5% voltage tolerance?

A: The 1N5233C-TAP maintains ±2% tolerance, providing tighter voltage regulation (5.88 V to 6.12 V). The 1N5233B and 1N5233BTR operate at ±5% tolerance (5.7 V to 6.3 V). Applications requiring precise voltage reference should specify the ±2% part.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts use DO-35 (DO-204AH) axial through-hole package with identical pin configuration and physical dimensions, enabling direct mechanical substitution on printed circuit boards.

Q: What is the significance of operating temperature range differences?

A: The 1N5233C-TAP specifies 175°C maximum. The 1N5233B matches this specification (-65°C to 175°C). The 1N5233BTR extends to 200°C maximum, providing enhanced thermal performance for high-temperature environments.

Q: Does packaging format affect electrical performance?

A: No. Tape & Box (TB), Bulk, and Cut Tape (CT) packaging formats are supply and handling variations only. Electrical and mechanical specifications remain identical across packaging types.

Q: Which substitute is recommended for new designs?

A: The 1N5233BTR is recommended for new designs requiring ROHS3 compliance, extended temperature range, and automotive-grade reliability. It provides the broadest operational envelope while maintaining full electrical equivalence.

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