1N4114-TP Equivalent & Substitute Parts

Part Overview

The 1N4114-TP is a Zener diode rated at 20 V nominal voltage with 500 mW power dissipation, packaged in a DO-35 axial through-hole configuration. Manufactured by Micro Commercial Co, this component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The 1N4114-TP maintains ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for standard industrial applications requiring stable voltage regulation at the 20 V level.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	20	V
Tolerance	±5%	%
Power - Max	500	mW
Impedance (Max)	150	Ohms
Current - Reverse Leakage @ Vr	10 nA @ 15.2 V	nA
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	V
Operating Temperature	175	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AH, DO-35, Axial	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 1N4114-TP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Zener voltage: 20 V nominal
Tolerance: ±5%
Power rating: 500 mW maximum
Forward voltage: 1.1 V maximum at 200 mA
Operating temperature: 175°C maximum

Mechanical Equivalence Criteria:

Package type: DO-35 axial through-hole configuration
Mounting: Through-hole compatible

Compliance Criteria:

RoHS3 compliance required
Moisture sensitivity level: 1 (Unlimited)

The 1N5250B-TAP meets all electrical and mechanical parameters specified for the 1N4114-TP. While the 1N5250B-TAP exhibits lower impedance (25 Ohms versus 150 Ohms) and higher reverse leakage current (100 nA @ 15 V versus 10 nA @ 15.2 V), these variations remain within acceptable operational tolerances for standard voltage regulation applications. The substitute part is manufactured by Vishay General Semiconductor - Diodes Division and maintains active product status with automotive-grade qualification (AEC-Q101).

Parameter Comparison

Parameter	1N4114-TP	1N5250B-TAP	Unit
Manufacturer	Micro Commercial Co	Vishay General Semiconductor - Diodes Division	-
Product Status	Obsolete	Active	-
Voltage - Zener (Nom)	20	20	V
Tolerance	±5%	±5%	%
Power - Max	500	500	mW
Impedance (Max)	150	25	Ohms
Current - Reverse Leakage @ Vr	10 nA @ 15.2 V	100 nA @ 15 V	nA
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	V
Operating Temperature	175	175	°C
Mounting Type	Through Hole	Through Hole	-
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	-

Engineering Selection Recommendations

The 1N5250B-TAP is the direct functional equivalent for the obsolete 1N4114-TP. Selection of the 1N5250B-TAP is supported by the following factors:

Product Status: The 1N5250B-TAP maintains active product status, ensuring long-term availability and supply chain continuity. The 1N4114-TP is classified as obsolete, creating procurement risk for new designs and production requirements.

Compliance and Certification: Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating. The 1N5250B-TAP carries automotive-grade qualification (AEC-Q101), providing additional quality assurance for applications requiring enhanced reliability standards.

Electrical Performance: Identical nominal zener voltage (20 V), tolerance (±5%), power rating (500 mW), and forward voltage characteristics (1.1 V @ 200 mA) ensure functional compatibility in voltage regulation circuits. The lower impedance of the 1N5250B-TAP (25 Ohms versus 150 Ohms) provides improved transient response characteristics.

Mechanical Compatibility: Both parts utilize identical DO-35 axial through-hole packaging, enabling direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5250B-TAP directly replace the 1N4114-TP in existing designs?

A: Yes. The 1N5250B-TAP meets all critical electrical and mechanical parameters of the 1N4114-TP. Both components share identical nominal zener voltage (20 V), tolerance (±5%), power rating (500 mW), and DO-35 axial through-hole packaging. Direct substitution is supported without circuit redesign.

Q: What is the significance of the impedance difference between these parts?

A: The 1N5250B-TAP exhibits lower impedance (25 Ohms) compared to the 1N4114-TP (150 Ohms). Lower impedance improves transient response and reduces output impedance in voltage regulation applications. This characteristic enhances circuit performance without introducing compatibility issues.

Q: Why does the 1N5250B-TAP show higher reverse leakage current?

A: The 1N5250B-TAP specifies 100 nA @ 15 V reverse leakage, compared to 10 nA @ 15.2 V for the 1N4114-TP. This difference reflects manufacturing process variations between manufacturers and does not impact functional equivalence for standard voltage regulation applications. Both values remain within acceptable operational limits for this component category.

Q: Are there packaging differences between these parts?

A: Both parts utilize DO-35 axial through-hole packaging. The 1N4114-TP is supplied in standard packaging, while the 1N5250B-TAP is available in cut tape (CT) format. Both configurations are mechanically and electrically identical for board-level installation.

Q: What compliance advantages does the 1N5250B-TAP offer?

A: The 1N5250B-TAP carries AEC-Q101 automotive-grade qualification in addition to ROHS3 compliance. This certification indicates enhanced quality assurance and reliability testing, making it suitable for applications requiring automotive or high-reliability standards.

Q: Is the 1N5250B-TAP suitable for new design implementations?

A: Yes. The 1N5250B-TAP maintains active product status with established supply chain availability. For new designs requiring a 20 V, 500 mW zener diode in DO-35 packaging, the 1N5250B-TAP is the appropriate selection.

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