BZX85C22-TR Equivalent & Substitute Parts

Part Overview

The BZX85C22-TR is a through-hole zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 22 V nominal zener voltage with 1.3 W maximum power dissipation. The device is packaged in DO-204AL (DO-41) axial configuration and supplied in Tape & Reel (TR) format. This zener diode is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance.

Equivalent and substitute parts are identified when design requirements necessitate alternative packaging formats, different tolerance specifications, or sourcing from alternative manufacturers while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22	V
Tolerance	±5%	—
Power - Max	1.3	W
Impedance (Max)	25	Ohms
Current - Reverse Leakage @ Vr	500	nA @ 16 V
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BZX85C22-TR are classified based on the following electrical and mechanical parameters that determine functional equivalence:

Critical Parameters for Substitution:

Voltage - Zener (Nom): 22 V (exact match required)
Power - Max: 1.3 W or greater
Impedance (Max): 25 Ohms or less
Package / Case: DO-204AL, DO-41, Axial (mechanical compatibility)
Mounting Type: Through Hole (assembly compatibility)
Operating Temperature Range: -55°C to 175°C minimum coverage
RoHS Status: ROHS3 Compliant

Tolerance Consideration: Zener voltage tolerance of ±5% is the specified tolerance for the main part. Substitute parts with tighter tolerance (±2%) are electrically compatible and represent improved performance. Substitute parts with identical ±5% tolerance maintain specification parity.

Packaging Format Variation: The main part is supplied in Tape & Reel (TR) format. Substitute parts supplied in Cut Tape (CT) or Bulk formats are electrically and mechanically equivalent but differ in packaging presentation and quantity per reel configuration.

Parameter Comparison

Parameter	BZX85C22-TR (Main)	BZX85B22-TR	BZX85C22-TAP	1N4748A TR PBFREE	BZV85-C22,113	BZV85-C22,133
Manufacturer	Vishay	Vishay	Vishay	Central Semiconductor	Nexperia USA Inc.	NXP Semiconductors
Voltage - Zener (Nom)	22 V	22 V	22 V	22 V	22 V	22 V
Tolerance	±5%	±2%	±5%	±5%	±5%	±5%
Power - Max	1.3 W	1.3 W	1.3 W	1 W	1.3 W	1.3 W
Impedance (Max)	25 Ohms	25 Ohms	25 Ohms	23 Ohms	25 Ohms	25 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 16 V	500 nA @ 16 V	500 nA @ 16 V	5 µA @ 16.7 V	50 nA @ 15.5 V	50 nA @ 15.5 V
Operating Temperature Range	-55 to 175°C	-55 to 175°C	-55 to 175°C	-65 to 200°C	-65 to 200°C	-65 to 200°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41	DO-204AL, DO-41	DO-204AL, DO-41	DO-204AL, DO-41	DO-204AL, DO-41	DO-204AL, DO-41
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)	Cut Tape (CT)	Tape & Reel (TR)	Bulk
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

BZX85B22-TR (Vishay): This substitute provides identical electrical performance to the main part with improved zener voltage tolerance of ±2% compared to ±5%. The device maintains the same 22 V nominal voltage, 1.3 W power rating, and DO-41 package. Supplied in Cut Tape (CT) format. Suitable for applications requiring tighter voltage tolerance specifications. Active product status with ROHS3 compliance.

BZX85C22-TAP (Vishay): This substitute is electrically identical to the main part, maintaining ±5% tolerance, 22 V nominal voltage, and 1.3 W power rating in DO-41 package. Supplied in Cut Tape (CT) format instead of Tape & Reel. Appropriate for applications with identical electrical requirements but different packaging format needs. Active product status with ROHS3 compliance.

1N4748A TR PBFREE (Central Semiconductor Corp): This substitute provides 22 V nominal zener voltage with ±5% tolerance in DO-41 package. Power rating is 1 W, which is lower than the main part's 1.3 W specification. Impedance is 23 Ohms, meeting the 25 Ohms maximum requirement. Reverse leakage current is higher at 5 µA compared to 500 nA. Operating temperature range extends to -65 to 200°C. Suitable for applications where 1 W power dissipation is sufficient. Active product status with ROHS3 compliance.

BZV85-C22,113 (Nexperia USA Inc.): This substitute provides 22 V nominal zener voltage with ±5% tolerance and 1.3 W power rating in DO-41 package. Supplied in Tape & Reel (TR) format. Reverse leakage current is 50 nA at 15.5 V, lower than the main part. Operating temperature range extends to -65 to 200°C. Active product status with ROHS3 compliance.

BZV85-C22,133 (NXP Semiconductors): This substitute provides 22 V nominal zener voltage with ±5% tolerance and 1.3 W power rating in DO-41 package. Supplied in Bulk format. Reverse leakage current is 50 nA at 15.5 V. Operating temperature range extends to -65 to 200°C. Active product status with ROHS3 compliance.

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BZX85B22-TR replace BZX85C22-TR in all applications?

A: BZX85B22-TR is electrically compatible with BZX85C22-TR. The primary difference is tighter zener voltage tolerance (±2% versus ±5%). Both devices share identical 22 V nominal voltage, 1.3 W power rating, and DO-41 package. The substitute is suitable for applications where improved voltage tolerance is beneficial or neutral. Packaging format differs (Cut Tape versus Tape & Reel).

Q: What is the significance of the packaging format difference between TR, CT, and Bulk?

A: Tape & Reel (TR), Cut Tape (CT), and Bulk represent different supply formats for the same electrical component. TR and CT formats are used for automated assembly equipment, with TR providing continuous reel supply and CT providing pre-cut tape segments. Bulk format is used for manual assembly or alternative handling methods. Electrical and mechanical specifications remain identical across formats.

Q: Is 1N4748A TR PBFREE a direct replacement for BZX85C22-TR?

A: 1N4748A TR PBFREE shares the 22 V nominal voltage and ±5% tolerance with BZX85C22-TR and uses the same DO-41 package. However, the power rating is 1 W compared to 1.3 W for the main part. This substitute is suitable only for applications where 1 W power dissipation is sufficient. Reverse leakage current is higher at 5 µA. Verify power budget requirements before substitution.

Q: What are the key electrical parameters that must match for zener diode substitution?

A: The critical parameters are: (1) Zener voltage nominal value (22 V exact match required), (2) Power dissipation rating (substitute must equal or exceed 1.3 W), (3) Impedance maximum (must not exceed 25 Ohms), (4) Package type (DO-41 required for mechanical compatibility), and (5) Mounting type (Through Hole required). Tolerance, reverse leakage, and operating temperature range may vary within acceptable limits.

Q: Are BZV85-C22,113 and BZV85-C22,133 interchangeable with BZX85C22-TR?

A: Both BZV85 variants are electrically compatible with BZX85C22-TR, sharing 22 V nominal voltage, ±5% tolerance, 1.3 W power rating, and DO-41 package. The primary differences are manufacturer (Nexperia/NXP versus Vishay), packaging format (TR or Bulk versus TR), and reverse leakage characteristics (50 nA versus 500 nA). Both are suitable substitutes for applications accepting alternative manufacturers.

Q: What does AEC-Q101 qualification indicate?

A: AEC-Q101 is an automotive qualification standard for discrete semiconductors. The main part BZX85C22-TR carries this qualification. Not all substitute parts explicitly list AEC-Q101 qualification in the provided data. Verify AEC-Q101 status with the manufacturer if automotive-grade qualification is a design requirement.

Q: Can operating temperature range differences affect substitution decisions?

A: The main part operates from -55°C to 175°C. Substitute parts BZX85B22-TR and BZX85C22-TAP maintain this range. Alternatives 1N4748A, BZV85-C22,113, and BZV85-C22,133 extend to -65 to 200°C. Extended temperature range is compatible with applications requiring the main part's temperature range. Verify application temperature requirements to confirm suitability.

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