BZX55F36-TAP Equivalent & Substitute Parts

Part Overview

The BZX55F36-TAP is a 36 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in a through-hole DO-35 package. This component is classified as obsolete, though 821 pieces remain in stock as new original inventory. The part is AEC-Q101 qualified for automotive applications and complies with RoHS3 and REACH regulations.

Due to the obsolete product status of the BZX55F36-TAP, identifying equivalent and substitute parts is necessary to ensure design continuity, supply chain reliability, and long-term component availability for new production runs and field replacements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	36	V
Power - Maximum	500	mW
Tolerance	±1%	—
Impedance (Maximum)	80	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 27 V
Voltage - Forward (Maximum) @ If	1.5	V @ 200 mA
Operating Temperature	175	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the BZX55F36-TAP is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 36 V (nominal)
Power dissipation: 500 mW (maximum)
Package type: DO-35 through-hole axial configuration
Reverse leakage current: 100 nA @ 27 V

Secondary Compatibility Factors:

Impedance (maximum): 80 Ohms or lower
Forward voltage: 1.5 V or lower @ 200 mA
Operating temperature range: minimum -65°C to 175°C
RoHS3 compliance and automotive qualification (AEC-Q101)

Substitute parts are grouped into two categories:

Category 1 - Direct Manufacturer Equivalent (Active Status): BZX55B36-TAP from Vishay General Semiconductor - Diodes Division. This part maintains identical electrical specifications with the exception of tolerance (±2% versus ±1%) and includes an expanded operating temperature range (-65°C to 175°C). Product status is active with high inventory availability.

Category 2 - Cross-Manufacturer Alternatives (Active Status): 1N5258B TR PBFREE, 1N5749B, 1N6013B, and 1N6013D from Central Semiconductor Corp and Microchip Technology. These parts meet the core electrical requirements (36 V, 500 mW, DO-35 package) but exhibit variations in tolerance (±5% or ±1%), impedance, and forward voltage characteristics. All are active products with established supply chains.

Parameter Comparison

Parameter	BZX55F36-TAP (Main)	BZX55B36-TAP	1N5258B TR PBFREE	1N5749B	1N6013B	1N6013D
Manufacturer	Vishay	Vishay	Central Semiconductor	Microchip	Microchip	Microchip
Voltage - Zener (Nom)	36 V	36 V	36 V	36 V	36 V	36 V
Tolerance	±1%	±2%	±5%	±5%	±5%	±1%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	80 Ω	80 Ω	70 Ω	90 Ω	95 Ω	95 Ω
Current - Reverse Leakage @ Vr	100 nA @ 27 V	100 nA @ 27 V	100 nA @ 27 V	100 nA @ 25 V	100 nA @ 27 V	100 nA @ 27 V
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA	900 mV @ 10 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	175°C	-65°C ~ 175°C	-65°C ~ 200°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35	DO-204AH, DO-35	DO-204AH, DO-35	DO-204AH, DO-35	DO-204AH, DO-35	DO-204AH, DO-35
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
AEC-Q101 Qualified	Yes	Yes	No	No	No	No

Engineering Selection Recommendations

Primary Recommendation: BZX55B36-TAP

The BZX55B36-TAP is the preferred direct substitute for the BZX55F36-TAP. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical performance at the core specifications (36 V, 500 mW, DO-35 package). The BZX55B36-TAP is currently in active production status with 31,106 pieces in stock, ensuring long-term supply availability. The tolerance specification increases from ±1% to ±2%, which remains within acceptable margins for most circuit applications. The part maintains AEC-Q101 automotive qualification and RoHS3 compliance. The expanded operating temperature range (-65°C to 175°C) provides additional design flexibility compared to the main part.

Secondary Recommendations: 1N6013D

The 1N6013D from Microchip Technology is a secondary alternative that matches the ±1% tolerance specification of the original BZX55F36-TAP. This part is active in production with 875 pieces in inventory. However, the 1N6013D does not carry AEC-Q101 automotive qualification and is not RoHS3 compliant. Selection of this part is appropriate only for non-automotive applications or where RoHS compliance is not required.

Alternative Options: 1N5258B TR PBFREE, 1N5749B, 1N6013B

These parts satisfy the core electrical requirements (36 V, 500 mW, DO-35 package) and are active products with established supply chains. However, all three parts lack AEC-Q101 automotive qualification. Additionally, 1N5749B and 1N6013B are not RoHS3 compliant. The 1N5258B TR PBFREE is RoHS3 compliant and offers an extended operating temperature range to 200°C. These alternatives are suitable for non-automotive applications or where automotive qualification is not a design requirement.

Compliance Considerations:

For automotive applications requiring AEC-Q101 qualification and RoHS3 compliance, the BZX55B36-TAP is the only active substitute that meets both criteria. For non-automotive applications, the 1N5258B TR PBFREE provides RoHS3 compliance with extended temperature performance. Applications without compliance requirements may utilize any of the listed alternatives based on specific circuit performance needs.

Frequently Asked Questions (FAQ)

Q: Can the BZX55B36-TAP directly replace the BZX55F36-TAP in automotive applications?

A: Yes. The BZX55B36-TAP is a direct substitute for automotive use. Both parts are AEC-Q101 qualified, RoHS3 compliant, and share identical core electrical specifications (36 V, 500 mW, DO-35 package). The tolerance difference (±2% versus ±1%) does not prevent substitution in standard automotive circuit designs. The BZX55B36-TAP is currently in active production with high inventory availability.

Q: What is the significance of the tolerance difference between BZX55F36-TAP (±1%) and BZX55B36-TAP (±2%)?

A: Tolerance specifies the allowable deviation of the zener voltage from the nominal 36 V specification. The BZX55F36-TAP allows ±0.36 V deviation (35.64 V to 36.36 V), while the BZX55B36-TAP allows ±0.72 V deviation (35.28 V to 36.72 V). For most voltage regulation and protection circuits, the ±2% tolerance of the BZX55B36-TAP is functionally equivalent. Applications requiring tighter voltage control should evaluate circuit performance with the wider tolerance band.

Q: Are the Microchip alternatives (1N5749B, 1N6013B, 1N6013D) suitable for automotive applications?

A: No. None of the Microchip alternatives carry AEC-Q101 automotive qualification. Additionally, 1N5749B and 1N6013B are not RoHS3 compliant. These parts are suitable only for non-automotive applications. For automotive designs, the BZX55B36-TAP from Vishay is the appropriate substitute.

Q: What is the difference between 1N6013B and 1N6013D?

A: Both parts are manufactured by Microchip Technology with identical electrical performance except for tolerance specification. The 1N6013B has ±5% tolerance, while the 1N6013D has ±1% tolerance. The 1N6013D provides tighter voltage control equivalent to the original BZX55F36-TAP. Neither part is AEC-Q101 qualified or RoHS3 compliant.

Q: Why is the 1N5258B TR PBFREE packaged in Tape & Reel format while others are in Bulk?

A: Packaging format (Tape & Reel versus Bulk) reflects the supplier's standard distribution method and does not affect electrical performance or physical compatibility. The "TR" designation indicates Tape & Reel packaging suitable for automated assembly processes. The "PBFREE" designation confirms lead-free construction. The DO-35 package dimensions remain identical across all packaging formats.

Q: Can I use 1N5258B TR PBFREE in place of BZX55F36-TAP for automotive applications?

A: The 1N5258B TR PBFREE is not AEC-Q101 qualified, which disqualifies it for automotive applications requiring this certification. While the part is RoHS3 compliant and offers extended temperature performance (-65°C to 200°C), it does not meet automotive qualification requirements. Use the BZX55B36-TAP for automotive designs.

Q: What does "Obsolete" product status mean for the BZX55F36-TAP?

A: Obsolete status indicates that the BZX55F36-TAP is no longer in active production. The 821 pieces currently in stock represent remaining inventory. Once depleted, the part will not be manufactured again. Designs using this component should transition to an active substitute such as the BZX55B36-TAP to ensure long-term supply chain continuity.

Q: Are all substitute parts physically compatible with the original BZX55F36-TAP footprint?

A: Yes. All listed substitute parts use the DO-35 through-hole axial package with identical physical dimensions. Direct board-level replacement is possible without PCB redesign. Soldering and mechanical installation procedures remain unchanged.

Q: Which substitute offers the best overall compatibility with the BZX55F36-TAP?

A: The BZX55B36-TAP provides the best overall compatibility. It is manufactured by the same company (Vishay), maintains AEC-Q101 automotive qualification, is RoHS3 compliant, and shares identical electrical specifications with only a minor tolerance increase (±2% versus ±1%). The part is in active production with substantial inventory availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message