1N4682-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4682-TP is a 2.7 V zener diode rated at 500 mW in a DO-35 through-hole package, manufactured by Micro Commercial Co. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 1N4682-TP operates at a maximum junction temperature of 200°C and maintains ±5% voltage tolerance with a reverse leakage current of 1 µA at 1 V.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	2.7 V
Tolerance	±5%
Power - Max	500 mW
Current - Reverse Leakage @ Vr	1 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA
Operating Temperature	200°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 1N4682-TP is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 2.7 V nominal
Power dissipation: 500 mW maximum
Package type: DO-35 through-hole axial configuration
Mounting: Through-hole compatible

Secondary Compatibility Factors:

Voltage tolerance (±5% preferred but not mandatory)
Reverse leakage current characteristics
Forward voltage drop specifications
Operating temperature range
RoHS and regulatory compliance status

Substitute parts are grouped into two categories: direct equivalents from alternative manufacturers with identical electrical specifications, and functionally compatible alternatives with equivalent or superior performance characteristics within the same package envelope.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power Max	Ir @ Vr	Vf (Max) @ If	Temp Range	Package	Status	RoHS
1N4682-TP	Micro Commercial Co	2.7 V	±5%	500 mW	1 µA @ 1 V	1.5 V @ 100 mA	200°C (TJ)	DO-35	Obsolete	ROHS3
1N4682 TR PBFREE	Central Semiconductor Corp	2.7 V	±5%	500 mW	1 µA @ 1 V	1.5 V @ 100 mA	-65°C ~ 200°C	DO-35	Active	ROHS3
1N5223B TR PBFREE	Central Semiconductor Corp	2.7 V	±5%	500 mW	75 µA @ 1 V	1.1 V @ 200 mA	-65°C ~ 200°C	DO-35	Active	ROHS3
1N5223B BK TIN/LEAD	Central Semiconductor Corp	2.7 V	±5%	500 mW	75 µA @ 1 V	1.1 V @ 200 mA	-65°C ~ 200°C	DO-35	Active	Non-compliant
BZX55C2V7-TR	Vishay General Semiconductor	2.7 V	—	500 mW	10 µA @ 1 V	1.5 V @ 200 mA	175°C	DO-35	Active	ROHS3
TZX2V7B-TR	Vishay General Semiconductor	2.7 V	—	500 mW	5 µA @ 500 mV	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active	ROHS3
TZX2V7C-TR	Vishay General Semiconductor	2.7 V	—	500 mW	5 µA @ 500 mV	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active	ROHS3
TZX2V7C-TAP	Vishay General Semiconductor	2.7 V	—	500 mW	5 µA @ 500 mV	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active	ROHS3

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

The 1N4682 TR PBFREE from Central Semiconductor Corp is the direct functional equivalent to the 1N4682-TP. This part maintains identical electrical specifications including 2.7 V nominal zener voltage, ±5% tolerance, 500 mW power rating, and 1 µA reverse leakage current. The part is currently in active production status with ROHS3 compliance and an extended operating temperature range of -65°C to 200°C. This part is available in Tape & Reel packaging with 986 pieces in stock.

Alternative Substitutes (Active Production):

The 1N5223B TR PBFREE and 1N5223B BK TIN/LEAD from Central Semiconductor Corp are functionally compatible alternatives. Both maintain the 2.7 V nominal voltage and 500 mW power rating with ±5% tolerance. These parts feature lower reverse leakage current (75 µA @ 1 V) and reduced forward voltage drop (1.1 V @ 200 mA). The 1N5223B TR PBFREE is ROHS3 compliant and recommended for new designs. The 1N5223B BK TIN/LEAD is RoHS non-compliant and suitable only for legacy applications.

Automotive-Grade Alternatives:

The BZX55C2V7-TR, TZX2V7B-TR, TZX2V7C-TR, and TZX2V7C-TAP from Vishay General Semiconductor are automotive-qualified zener diodes (AEC-Q101) with 2.7 V nominal voltage and 500 mW power rating. These parts feature superior reverse leakage characteristics (5–10 µA) and are ROHS3 compliant. The TZX series offers extended temperature range (-65°C to 175°C) and lower impedance characteristics. These parts are suitable for applications requiring automotive-grade reliability and qualification.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance with the exception of 1N5223B BK TIN/LEAD, which is RoHS non-compliant. For new designs and procurement, ROHS3-compliant alternatives are required. All substitute parts are classified as REACH Unaffected or carry equivalent regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the 1N4682 TR PBFREE directly replace the 1N4682-TP?

A: Yes. The 1N4682 TR PBFREE is a direct equivalent with identical electrical specifications. The primary difference is packaging format (Tape & Reel versus bulk) and active production status. Both parts maintain 2.7 V nominal voltage, ±5% tolerance, 500 mW power rating, and 1 µA reverse leakage current.

Q: What is the difference between the 1N5223B and 1N4682 series?

A: Both series maintain 2.7 V nominal voltage and 500 mW power rating. The 1N5223B series exhibits higher reverse leakage current (75 µA @ 1 V versus 1 µA @ 1 V) and lower forward voltage drop (1.1 V @ 200 mA versus 1.5 V @ 100 mA). The 1N5223B is functionally compatible but exhibits different dynamic characteristics.

Q: Are the Vishay TZX and BZX series compatible with the 1N4682-TP?

A: Yes. Both Vishay series maintain 2.7 V nominal voltage and 500 mW power rating in DO-35 packages. The TZX and BZX series feature automotive-grade qualification (AEC-Q101) and superior reverse leakage characteristics. Operating temperature ranges differ: BZX55C2V7-TR operates to 175°C, while TZX series operates from -65°C to 175°C.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT), and Bulk. The 1N4682 TR PBFREE and 1N5223B TR PBFREE are supplied in Tape & Reel format. The 1N5223B BK TIN/LEAD is supplied in Bulk. Vishay parts (BZX55C2V7-TR, TZX2V7B-TR, TZX2V7C-TR, TZX2V7C-TAP) are supplied in Cut Tape format.

Q: Is RoHS compliance required for substitute selection?

A: For new designs, ROHS3-compliant parts are required. All recommended substitutes except 1N5223B BK TIN/LEAD are ROHS3 compliant. The 1N5223B BK TIN/LEAD is RoHS non-compliant and suitable only for legacy applications or repair of existing non-compliant assemblies.

Q: What is the difference between automotive-grade (AEC-Q101) and standard zener diodes?

A: Automotive-grade zener diodes (BZX55C2V7-TR, TZX2V7B-TR, TZX2V7C-TR, TZX2V7C-TAP) undergo additional qualification testing and reliability screening per AEC-Q101 standards. These parts feature tighter process control and superior reverse leakage characteristics. Standard parts (1N4682 TR PBFREE, 1N5223B series) are suitable for general-purpose applications.

Q: Can I use the 1N5223B BK TIN/LEAD in new designs?

A: No. The 1N5223B BK TIN/LEAD is RoHS non-compliant and not suitable for new designs. Use the 1N5223B TR PBFREE (ROHS3 compliant) or other ROHS3-compliant alternatives for new applications.

Q: What are the inventory considerations for substitute selection?

A: Current inventory levels vary significantly among substitutes. The TZX2V7C-TR has the highest inventory (30,836 pieces), followed by TZX2V7B-TR (30,335 pieces) and BZX55C2V7-TR (21,345 pieces). The 1N4682 TR PBFREE has 986 pieces in stock, and 1N5223B TR PBFREE has 891 pieces. Inventory levels should be considered for long-term procurement planning.

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