1N4100-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4100-TP is a 7.5 V, 500 mW Zener diode manufactured by Micro Commercial Co in DO-35 axial through-hole packaging. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity. Equivalent parts maintain identical electrical specifications and mechanical compatibility, while substitute parts provide functional alternatives with comparable performance characteristics within the same application category.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	7.5	V
Tolerance	±5%	-
Power - Max	500	mW
Impedance (Max)	200	Ohms
Voltage - Forward (Max) @ If	1.1	V @ 200 mA
Operating Temperature	175	°C (TJ)
Mounting Type	Through Hole	-
Package / Case	DO-204AH, DO-35, Axial	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 1N4100-TP is determined by the following critical parameters: nominal Zener voltage of 7.5 V, maximum power dissipation of 500 mW, through-hole mounting configuration, and DO-35 axial package format. All substitute parts listed maintain these core electrical and mechanical specifications. Substitute parts are grouped into two categories based on product status and packaging format:

Direct Substitutes (Active Status): Parts with identical electrical ratings and active manufacturing status, available in multiple packaging configurations (Cut Tape, Bulk, Tape & Reel).

Functional Equivalents (Active Status): Parts with 7.5 V nominal Zener voltage and 500 mW power rating in DO-35 packaging, with variations in impedance, reverse leakage current, forward voltage, and operating temperature ranges. These parts are qualified for automotive applications (AEC-Q101) and represent enhanced performance alternatives.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Operating Temp	Packaging	Product Status
1N4100-TP	Micro Commercial Co	7.5 V	±5%	500 mW	200 Ω	1.1 V @ 200 mA	175°C	DO-35	Obsolete
1N5236B TR PBFREE	Central Semiconductor Corp	7.5 V	±5%	500 mW	6 Ω	1.1 V @ 200 mA	-65°C ~ 200°C	DO-35	Active
1N5236B BK PBFREE	Central Semiconductor Corp	7.5 V	±5%	500 mW	6 Ω	1.1 V @ 200 mA	-65°C ~ 200°C	DO-35	Active
1N5236C-TAP	Vishay General Semiconductor - Diodes Division	7.5 V	±2%	500 mW	6 Ω	1.1 V @ 200 mA	175°C	DO-35	Active
1N5236C-TR	Vishay General Semiconductor - Diodes Division	7.5 V	±2%	500 mW	6 Ω	1.1 V @ 200 mA	175°C	DO-35	Active
1N755A BK PBFREE	Central Semiconductor Corp	7.5 V	±5%	500 mW	6 Ω	1.5 V @ 200 mA	-65°C ~ 200°C	DO-35	Active
1N755A TR PBFREE	Central Semiconductor Corp	7.5 V	±5%	500 mW	6 Ω	1.5 V @ 200 mA	-65°C ~ 200°C	DO-35	Active
BZX55C7V5-TAP	Vishay General Semiconductor - Diodes Division	7.5 V	±5%	500 mW	7 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active
BZX55C7V5-TR	Vishay General Semiconductor - Diodes Division	7.5 V	±5%	500 mW	7 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active
TZX7V5A-TAP	Vishay General Semiconductor - Diodes Division	7.5 V	-	500 mW	15 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active
TZX7V5A-TR	Vishay General Semiconductor - Diodes Division	7.5 V	-	500 mW	15 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active

Engineering Selection Recommendations

Primary Substitutes: The 1N5236B TR PBFREE and 1N5236B BK PBFREE (Central Semiconductor Corp) are direct functional equivalents with active product status. These parts maintain the 7.5 V nominal Zener voltage, ±5% tolerance, and 500 mW power rating. The extended operating temperature range (-65°C to 200°C) provides broader thermal capability compared to the original 1N4100-TP. Both parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

Automotive-Qualified Alternatives: The 1N5236C-TAP and 1N5236C-TR (Vishay) offer improved tolerance specification (±2%) and AEC-Q101 automotive qualification. These parts are suitable for applications requiring enhanced voltage accuracy and automotive-grade reliability. Operating temperature is limited to 175°C maximum.

Enhanced Performance Options: The BZX55C7V5-TAP and BZX55C7V5-TR (Vishay BZX55 series) provide automotive qualification (AEC-Q101) with slightly higher impedance (7 Ω) and extended low-temperature operation (-65°C). The TZX7V5A-TAP and TZX7V5A-TR (Vishay TZX series) offer automotive qualification with higher impedance (15 Ω), suitable for applications with specific impedance requirements.

Compliance Considerations: All substitute parts are ROHS3 compliant and REACH unaffected. Selection should be based on packaging format requirements (Cut Tape, Bulk, or Tape & Reel), operating temperature range, impedance specifications, and automotive qualification needs.

Frequently Asked Questions (FAQ)

Q: Can the 1N5236B TR PBFREE directly replace the 1N4100-TP?

A: Yes. Both parts share identical nominal Zener voltage (7.5 V), tolerance (±5%), power rating (500 mW), forward voltage (1.1 V @ 200 mA), and DO-35 axial through-hole packaging. The 1N5236B TR PBFREE is active and ROHS3 compliant. The extended operating temperature range (-65°C to 200°C) provides additional thermal margin.

Q: What is the difference between 1N5236B and 1N5236C variants?

A: The 1N5236C offers tighter voltage tolerance (±2% versus ±5%) and is automotive qualified (AEC-Q101). Both maintain 7.5 V nominal voltage and 500 mW power rating. Selection depends on tolerance and qualification requirements.

Q: Are the BZX55C7V5 and TZX7V5A series suitable replacements?

A: Yes, both series maintain 7.5 V nominal voltage and 500 mW power rating in DO-35 packaging. The BZX55C7V5 series has 7 Ω impedance, while TZX7V5A has 15 Ω impedance. Both are automotive qualified (AEC-Q101). Selection depends on specific impedance requirements and packaging format preference.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in Cut Tape (CT), Bulk (BK), Tape & Reel (TR), and Tape & Box (TB) formats. The original 1N4100-TP packaging format is not specified in the provided data. Selection should match the assembly process requirements.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of impedance differences among substitute parts?

A: Impedance (Zzt) affects dynamic response and noise characteristics. The 1N4100-TP specifies 200 Ω maximum impedance. Substitute parts range from 6 Ω to 15 Ω, representing lower impedance alternatives. Lower impedance provides improved high-frequency performance and reduced noise. Application-specific circuit analysis determines acceptable impedance ranges.

Q: Are the 1N755A variants equivalent to 1N5236B?

A: Both maintain 7.5 V nominal voltage and 500 mW power rating. The 1N755A has higher forward voltage (1.5 V @ 200 mA versus 1.1 V) and lower reverse leakage current (100 nA @ 1 V). These differences affect circuit performance in specific applications. Both are active and ROHS3 compliant.

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