1N4690-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4690-TP is a 5.6 V zener diode rated for 500 mW power dissipation in a DO-35 through-hole package, manufactured by Micro Commercial Co. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. Equivalent and substitute parts must match the electrical specifications and mechanical form factor to ensure functional compatibility in existing circuit designs.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	5.6 V
Tolerance	±5%
Power - Max	500 mW
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1N4690-TP is determined by the following critical parameters:

Electrical Specifications:

Zener voltage: 5.6 V nominal
Power rating: 500 mW maximum
Tolerance: ±5% or tighter
Forward voltage and reverse leakage characteristics within acceptable ranges

Mechanical Specifications:

Package type: DO-35 (DO-204AH) through-hole axial configuration
Lead compatibility with existing PCB layouts

Compliance Requirements:

RoHS3 compliance
MSL rating of 1 (Unlimited)

All substitute parts listed meet these core requirements. Variations in reverse leakage current, impedance, and operating temperature ranges do not preclude substitution when the primary electrical and mechanical parameters align.

Parameter Comparison

Parameter	1N4690-TP	BZX79C5V6TR	1N5232B-TAP	1N5232B-TR	BZX55B5V6-TAP	BZX55B5V6-TR
Manufacturer	Micro Commercial Co	Fairchild Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - Zener (Nom)	5.6 V	5.6 V	5.6 V	5.6 V	5.6 V	5.6 V
Tolerance	±5%	±5%	±5%	±5%	±2%	±2%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA	1.5 V @ 100 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

The 1N5232B-TR and 1N5232B-TAP from Vishay General Semiconductor are functionally equivalent to the 1N4690-TP. Both parts maintain the 5.6 V nominal zener voltage, 500 mW power rating, ±5% tolerance, and DO-35 through-hole package. Both are RoHS3 compliant with MSL rating of 1. These parts are currently in active production with substantial inventory availability.

Enhanced Performance Alternatives:

The BZX55B5V6-TR and BZX55B5V6-TAP from Vishay General Semiconductor offer tighter tolerance (±2% versus ±5%), lower reverse leakage current (100 nA @ 1 V), and automotive-grade qualification (AEC-Q101). These parts are suitable for applications requiring improved voltage regulation accuracy and are available in active production status.

Functional Equivalent:

The BZX79C5V6TR from Fairchild Semiconductor matches the 1N4690-TP electrical specifications with 5.6 V nominal voltage, 500 mW power rating, and ±5% tolerance in DO-35 package. This part is in active production with high inventory availability.

All substitute parts are RoHS3 compliant and suitable for direct replacement in through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5232B-TR be used as a direct replacement for the 1N4690-TP?

A: Yes. Both parts share identical zener voltage (5.6 V), power rating (500 mW), tolerance (±5%), and DO-35 through-hole package configuration. The 1N5232B-TR is in active production and RoHS3 compliant.

Q: What is the difference between the BZX55B5V6-TR and 1N5232B-TR?

A: The BZX55B5V6-TR offers tighter voltage tolerance (±2% versus ±5%) and lower reverse leakage current (100 nA @ 1 V versus 5 µA @ 3 V). Both maintain the same 5.6 V nominal voltage, 500 mW power rating, and DO-35 package. The BZX55B5V6-TR includes automotive-grade qualification (AEC-Q101).

Q: Are the packaging variants (Cut Tape vs. Bulk) electrically equivalent?

A: Yes. Packaging variants such as Cut Tape (CT) and Bulk affect only the delivery format and handling, not the electrical or mechanical specifications of the diode itself. The diode performance is identical regardless of packaging variant.

Q: Can I use the BZX79C5V6TR in place of the 1N4690-TP?

A: Yes. The BZX79C5V6TR maintains the same 5.6 V nominal voltage, 500 mW power rating, ±5% tolerance, and DO-35 through-hole package. It is in active production with high inventory availability.

Q: Does the operating temperature range affect substitution compatibility?

A: Operating temperature range does not preclude substitution when the primary electrical and mechanical parameters match. The 1N4690-TP specified maximum operating temperature of 200°C is met or exceeded by all substitute parts listed. Selection should be based on the specific thermal requirements of the application circuit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (1N5232B-TR, 1N5232B-TAP, BZX55B5V6-TR, BZX55B5V6-TAP, and BZX79C5V6TR) are RoHS3 compliant, matching the compliance status of the original 1N4690-TP.

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