1N4117-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4117-TP is a 25 V, 500 mW Zener diode manufactured by Micro Commercial Co in a DO-35 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical performance within the specified tolerance and mechanical compatibility with the original DO-35 package configuration.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	25	V
Tolerance	±5%	%
Power - Maximum	500	mW
Package / Case	DO-204AH, DO-35, Axial	—
Mounting Type	Through Hole	—
Voltage - Forward (Max) @ If	1.1 V @ 200 mA	V
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 1N4117-TP are qualified based on the following criteria:

Electrical Parameters (Must Match):

Voltage - Zener (Nominal): 25 V
Tolerance: ±5%
Power - Maximum: 500 mW
Voltage - Forward (Max) @ If: 1.1 V @ 200 mA

Mechanical Parameters (Must Match):

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

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant

All substitute parts listed below satisfy these core requirements and are classified as active products, providing long-term availability compared to the obsolete 1N4117-TP.

Parameter Comparison

Parameter	1N4117-TP (Main)	1N5253B-TR	1N5253B BK PBFREE	1N5253B TR PBFREE
Manufacturer	Micro Commercial Co	Vishay General Semiconductor - Diodes Division	Central Semiconductor Corp	Central Semiconductor Corp
Product Status	Obsolete	Active	Active	Active
Voltage - Zener (Nom)	25 V	25 V	25 V	25 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max) (Zzt)	150 Ohms	35 Ohms	35 Ohms	35 Ohms
Current - Reverse Leakage @ Vr	10 nA @ 19 V	100 nA @ 19 V	100 nA @ 19 V	100 nA @ 19 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	175°C (TJ)	-65°C ~ 175°C	-65°C ~ 200°C	-65°C ~ 200°C
Mounting Type	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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	—	Cut Tape (CT)	Bulk	Cut Tape (CT)

Engineering Selection Recommendations

1N5253B-TR (Vishay General Semiconductor - Diodes Division)

This part is a direct functional equivalent with active product status. It meets all electrical and mechanical requirements for 1N4117-TP replacement. The 1N5253B-TR is supplied in cut tape packaging and maintains ROHS3 compliance. Operating temperature range extends to 175°C, matching the original specification. Impedance is improved at 35 Ohms compared to the original 150 Ohms specification.

1N5253B BK PBFREE (Central Semiconductor Corp)

This part satisfies all core substitution criteria with active product status. Supplied in bulk packaging, it provides an alternative sourcing option. Operating temperature range extends to 200°C, exceeding the original specification. REACH compliance status is unaffected. Impedance specification is 35 Ohms.

1N5253B TR PBFREE (Central Semiconductor Corp)

This part is functionally equivalent with active product status and cut tape packaging. Operating temperature range extends to 200°C. REACH compliance status is unaffected. Impedance specification is 35 Ohms. This option provides compatibility with automated assembly processes requiring tape-and-reel format.

All three substitute parts are ROHS3 compliant with moisture sensitivity level 1 (unlimited), matching the original component specifications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5253B-TR directly replace the 1N4117-TP in existing designs?

A: Yes. Both components share identical zener voltage (25 V), tolerance (±5%), power rating (500 mW), forward voltage specification (1.1 V @ 200 mA), and DO-35 through-hole package configuration. Electrical performance is compatible within the specified parameters.

Q: What is the difference between the three substitute parts?

A: The three substitutes differ in manufacturer and packaging format. The 1N5253B-TR is manufactured by Vishay and supplied in cut tape. The 1N5253B BK PBFREE and 1N5253B TR PBFREE are manufactured by Central Semiconductor Corp, with the former supplied in bulk and the latter in cut tape. All three meet the electrical and mechanical requirements for 1N4117-TP replacement.

Q: Does the improved impedance specification (35 Ohms vs. 150 Ohms) affect compatibility?

A: Lower impedance is a performance improvement that does not compromise compatibility. The substitute parts maintain the same zener voltage and tolerance, ensuring functional equivalence in voltage regulation applications.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant with moisture sensitivity level 1 (unlimited), matching the original 1N4117-TP specification.

Q: What is the difference between cut tape and bulk packaging?

A: Cut tape (CT) packaging is suitable for automated pick-and-place assembly processes. Bulk packaging is used for manual assembly or alternative handling methods. Both formats contain the same electronic component; packaging selection depends on assembly process requirements.

Q: Do the substitute parts have extended operating temperature ranges?

A: The 1N5253B-TR maintains the original operating temperature range to 175°C. The 1N5253B BK PBFREE and 1N5253B TR PBFREE extend the upper operating temperature to 200°C, providing additional thermal margin in high-temperature applications.

Q: Is REACH compliance relevant for component selection?

A: REACH compliance status is provided for regulatory documentation purposes. The substitute parts from Central Semiconductor Corp indicate REACH unaffected status, confirming compliance with European chemical regulations.

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