1N5232B_S00Z Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5232B_S00Z is a 5.6 V Zener diode rated for 500 mW power dissipation in a DO-35 through-hole package. Manufactured by onsemi, this component is classified as obsolete. Due to its obsolete product status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	5.6 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max)	11 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 3 V
Mounting Type	Through Hole
Package / Case	DO-35 (DO-204AH)
Operating Temperature Range	-65°C ~ 200°C (TJ)

Substitute Part Grouping Explanation

Substitute parts for the 1N5232B_S00Z are identified based on matching the following critical electrical and mechanical parameters:

Zener voltage: 5.6 V nominal
Tolerance: ±5%
Power rating: 500 mW
Maximum impedance: 11 Ohms
Reverse leakage current: 5 µA @ 3 V
Package type: DO-35 through-hole
Mounting configuration: Axial leads

Parts meeting these specifications are classified as parametric equivalents and direct substitutes. Variations in forward voltage characteristics, operating temperature range, and product status are noted but do not disqualify substitution when electrical performance requirements are satisfied.

Parameter Comparison

Parameter	1N5232B_S00Z (onsemi)	1N5232B (Microchip Technology)	1N5232BTA (onsemi)
Voltage - Zener (Nom)	5.6 V	5.6 V	5.6 V
Tolerance	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW
Impedance (Max)	11 Ohms	11 Ohms	11 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 3 V	5 µA @ 3 V	5 µA @ 3 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature Range	-65°C ~ 200°C	-65°C ~ 175°C	-65°C ~ 200°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-35 (DO-204AH)	DO-35 (DO-204AH)	DO-35 (DO-204AH)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

1N5232BTA (onsemi) is the primary substitute for the 1N5232B_S00Z. Both parts are manufactured by onsemi and share identical electrical specifications across all critical parameters. The 1N5232BTA maintains the full operating temperature range (-65°C ~ 200°C) and exhibits superior forward voltage characteristics (1.1 V @ 200 mA versus 1.2 V). The 1N5232BTA holds active product status and carries RoHS3 compliance certification, ensuring long-term availability and regulatory alignment.

1N5232B (Microchip Technology) serves as a secondary substitute. This part meets all core electrical requirements and maintains parametric equivalence. The operating temperature range is reduced to -65°C ~ 175°C, which may be a limiting factor in applications requiring the full -65°C ~ 200°C thermal envelope. The forward voltage specification is higher at 1.5 V @ 200 mA. This part is RoHS non-compliant and should be selected only when the reduced temperature range and compliance status are acceptable for the application.

Selection priority is based on product status (active versus obsolete), compliance certifications, and thermal operating range alignment with design requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1N5232BTA directly replace the 1N5232B_S00Z in existing designs?

A: Yes. The 1N5232BTA is a direct parametric equivalent with identical zener voltage (5.6 V), tolerance (±5%), power rating (500 mW), impedance (11 Ohms), and reverse leakage characteristics. Both parts use the DO-35 through-hole package with axial leads. The 1N5232BTA maintains the full operating temperature range and is the recommended replacement.

Q: What is the difference between the 1N5232B from Microchip Technology and the 1N5232BTA from onsemi?

A: Both parts are parametric equivalents with matching zener voltage, tolerance, power rating, and impedance specifications. The primary differences are: (1) operating temperature range—Microchip's 1N5232B is limited to -65°C ~ 175°C versus onsemi's 1N5232BTA at -65°C ~ 200°C; (2) forward voltage—Microchip specifies 1.5 V @ 200 mA versus onsemi's 1.1 V @ 200 mA; (3) compliance status—Microchip's part is RoHS non-compliant while onsemi's 1N5232BTA is RoHS3 compliant. Selection depends on thermal requirements and regulatory compliance needs.

Q: Are there any package or mounting differences between these substitute parts?

A: No. All three parts—1N5232B_S00Z, 1N5232B, and 1N5232BTA—use the DO-35 (DO-204AH) through-hole package with axial leads. Physical dimensions and lead configurations are identical, allowing direct board-level substitution without layout modifications.

Q: Why is the 1N5232B_S00Z classified as obsolete?

A: The 1N5232B_S00Z is marked as obsolete by onsemi. Active alternatives with identical electrical specifications are available from both onsemi (1N5232BTA) and Microchip Technology (1N5232B), ensuring continued design support and component availability.

Q: What compliance certifications should I verify for my application?

A: The 1N5232BTA carries RoHS3 compliance and REACH Unaffected status. The 1N5232B from Microchip Technology is RoHS non-compliant but also carries REACH Unaffected status. Both parts have ECCN classification EAR99 and HTSUS code 8541.10.0050. Verify compliance requirements against your specific application and regional regulations before final part selection.

Q: Can I use the 1N5232B from Microchip Technology in applications requiring the full -65°C ~ 200°C operating range?

A: No. The Microchip 1N5232B is rated only to 175°C maximum junction temperature. If your design requires operation at temperatures between 175°C and 200°C, the 1N5232BTA from onsemi is the appropriate substitute, as it maintains the full -65°C ~ 200°C thermal envelope.

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