BZX85-C200 Equivalent & Substitute Parts

Part Overview

The BZX85-C200 is a 200 V, 1.3 W zener diode manufactured by Vishay General Semiconductor - Diodes Division in the DO-204AL (DO-41) axial through-hole package. This component is classified as obsolete, though 828 pieces remain in stock as new original inventory. The BZX85-C200 is qualified to AEC-Q101 automotive standards and operates across a temperature range of -55°C to 175°C.

Substitute components are necessary due to the obsolete product status of the BZX85-C200. Active alternative zener diodes with equivalent electrical characteristics and compatible packaging are available from multiple manufacturers, ensuring continued design support and supply chain reliability.

Key Parameters

Parameter	BZX85-C200
Voltage - Zener (Nom) (Vz)	200 V
Tolerance	±5%
Power - Max	1.3 W
Impedance (Max) (Zzt)	1500 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 150 V
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA
Operating Temperature	-55°C ~ 175°C
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the BZX85-C200 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 200 V nominal
Tolerance: ±5% or tighter
Power dissipation: equal to or greater than 1.3 W
Package type: DO-204AL (DO-41) axial through-hole
Operating temperature range: minimum -55°C to 175°C

Secondary Compatibility Factors:

Impedance (Zzt): 1500 Ohms or lower
Reverse leakage current: 500 nA @ 150 V or lower
Forward voltage: 1 V @ 200 mA or lower

Substitute parts are grouped into two categories based on power rating alignment:

Category A - Direct Power Rating Match (1.25 W to 1.5 W): Parts with power dissipation within 0.05 W of the original specification, maintaining equivalent thermal performance in standard circuit applications.

Category B - Higher Power Rating (2 W to 3 W): Parts with increased power dissipation capability, suitable for applications requiring additional thermal margin or higher current handling.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power - Max	Zzt (Max)	Reverse Leakage @ Vr	Vf (Max) @ If	Temp Range	Package	Status
BZX85-C200	Vishay	200 V	±5%	1.3 W	1500 Ω	500 nA @ 150 V	1 V @ 200 mA	-55°C ~ 175°C	DO-204AL	Obsolete
1N4496	Microchip Technology	200 V	±5%	1.5 W	1500 Ω	250 nA @ 160 V	1.5 V @ 1 A	-65°C ~ 175°C	DO-41	Active
1N5281A	Microchip Technology	200 V	±10%	500 mW	2500 Ω	100 nA @ 144 V	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active
1N5281BE3	Microchip Technology	200 V	±5%	500 mW	2500 Ω	100 nA @ 152 V	1.5 V @ 200 mA	-65°C ~ 175°C	DO-35	Active
1N5956B	Microchip Technology	200 V	±5%	1.25 W	1200 Ω	1 µA @ 152 V	1.2 V @ 200 mA	-65°C ~ 175°C	DO-41	Active
1N5956BG	Microsemi Corporation	200 V	±5%	1.25 W	1200 Ω	1 µA @ 152 V	1.2 V @ 200 mA	-65°C ~ 175°C	DO-204AL	Active
1N5956CG	Microsemi Corporation	200 V	±2%	1.25 W	1200 Ω	1 µA @ 152 V	1.2 V @ 200 mA	-65°C ~ 175°C	DO-204AL	Active
1N5956BRLG	onsemi	200 V	±5%	3 W	1200 Ω	1 µA @ 152 V	1.5 V @ 200 mA	-65°C ~ 200°C	Axial	Active
2EZ200D5	Microsemi Corporation	200 V	±5%	2 W	900 Ω	500 nA @ 152 V	1.2 V @ 200 mA	-65°C ~ 150°C	DO-204AL	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

The 1N5956BG and 1N5956CG are the preferred substitutes for the BZX85-C200. Both parts maintain the DO-204AL package format, matching the original mechanical and electrical footprint. The 1N5956BG offers ±5% tolerance with 1.25 W power rating and active product status. The 1N5956CG provides tighter ±2% tolerance at the same power rating, suitable for applications requiring improved voltage regulation accuracy. Both operate across -65°C to 175°C, extending the lower temperature limit beyond the original specification.

Secondary Substitutes (Package Variant):

The 1N5956B from Microchip Technology provides equivalent electrical performance in the DO-41 package variant. This part is active and widely available with 32,356 pieces in stock, offering superior supply chain availability compared to other alternatives.

Higher Power Alternatives:

The 1N5956BRLG (onsemi) and 2EZ200D5 (Microsemi) are suitable for applications requiring increased power dissipation margin. The 1N5956BRLG offers 3 W capability with extended temperature range to 200°C and RoHS3 compliance. The 2EZ200D5 provides 2 W capability with improved impedance characteristics (900 Ohms). These parts are appropriate when thermal design margins or higher current handling is required.

Lower Power Alternatives:

The 1N5281BE3 and 1N5281A are available for applications where 500 mW power rating is sufficient. The 1N5281BE3 is RoHS3 compliant with ±5% tolerance. These parts use the DO-35 package, requiring PCB layout modification.

Compliance Considerations:

The 1N5956BRLG is RoHS3 compliant and recommended for new designs subject to RoHS requirements. The 1N5281BE3 is also RoHS3 compliant. All other substitutes are RoHS non-compliant, matching the original BZX85-C200 status. All listed parts maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the 1N5956BG directly replace the BZX85-C200 without PCB modification?

A: Yes. The 1N5956BG uses the identical DO-204AL (DO-41) axial package with matching lead spacing and mechanical dimensions. No PCB layout changes are required for direct substitution.

Q: What is the difference between 1N5956BG and 1N5956CG?

A: Both parts are electrically equivalent with identical power ratings (1.25 W) and package format (DO-204AL). The primary difference is voltage tolerance: 1N5956BG offers ±5% tolerance, while 1N5956CG provides tighter ±2% tolerance. Select 1N5956CG for applications requiring improved voltage regulation accuracy.

Q: Why is the 1N5281BE3 listed as a substitute if it has lower power rating (500 mW vs. 1.3 W)?

A: The 1N5281BE3 is listed as a valid substitute for applications where the circuit design permits operation at reduced power dissipation. It maintains the 200 V zener voltage and ±5% tolerance. However, it requires PCB modification due to the DO-35 package format and is suitable only for lower-current circuit implementations.

Q: Is the 1N5956BRLG suitable for automotive applications?

A: The 1N5956BRLG is manufactured by onsemi and is active with RoHS3 compliance. However, it does not carry AEC-Q101 automotive qualification. The original BZX85-C200 is AEC-Q101 qualified. For automotive applications requiring qualification compliance, select 1N5956BG or 1N5956CG from Microsemi, which maintain equivalent electrical specifications.

Q: What is the temperature range difference between the BZX85-C200 and substitute parts?

A: The BZX85-C200 operates from -55°C to 175°C. Most substitutes (1N5956B, 1N5956BG, 1N5956CG, 1N5281A, 1N5281BE3) extend the lower limit to -65°C. The 1N5956BRLG extends the upper limit to 200°C. The 2EZ200D5 operates to 150°C maximum, which is lower than the original specification.

Q: Can I use the 2EZ200D5 in place of the BZX85-C200?

A: The 2EZ200D5 is electrically compatible with matching 200 V zener voltage and ±5% tolerance. However, its maximum operating temperature is 150°C, which is 25°C below the original specification. Use this part only in applications where the upper temperature limit does not exceed 150°C.

Q: What inventory levels are available for each substitute?

A: Current stock levels are: 1N4496 (970 pcs), 1N5281A (1,113 pcs), 1N5281BE3 (659 pcs), 1N5956B (32,356 pcs), 1N5956BG (726 pcs), 1N5956BRLG (8,094 pcs), 1N5956CG (949 pcs), and 2EZ200D5 (3,200 pcs). The 1N5956B offers the highest availability.

Q: Are all substitute parts RoHS compliant?

A: No. Only 1N5956BRLG and 1N5281BE3 are RoHS3 compliant. All other substitutes, including the original BZX85-C200, are RoHS non-compliant. For new designs subject to RoHS requirements, select 1N5956BRLG or 1N5281BE3.

Q: What is the impedance difference between the BZX85-C200 and 1N5956B?

A: The BZX85-C200 has maximum impedance of 1500 Ohms, while the 1N5956B has 1200 Ohms maximum. Lower impedance in the 1N5956B results in improved voltage regulation characteristics and reduced dynamic impedance effects in circuit operation.

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