BZX79-C30,133 Equivalent & Substitute Parts

Part Overview

The BZX79-C30,133 is an active zener diode manufactured by Nexperia USA Inc., classified within the Diodes, Zener category. This through-hole component is specified for 30 V nominal zener voltage with 400 mW maximum power dissipation and ±5% voltage tolerance. The part is packaged in DO-204AH, DO-35 axial configuration and supplied in Cut Tape (CT) format. Current inventory of 2575 pieces supports immediate availability for production applications. Alternative part numbers are necessary when Cut Tape packaging is unavailable, when tighter voltage tolerance is required, or when bulk packaging is preferred for high-volume manufacturing.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	30	V
Tolerance	±5%	—
Power - Max	400	mW
Impedance (Max)	80	Ohms
Current - Reverse Leakage @ Vr	50 nA @ 700 mV	—
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	—
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Supplier Device Package	ALF2	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZX79-C30,133 is determined by the following critical parameters: nominal zener voltage (30 V), maximum power rating (400 mW), through-hole mounting configuration, and DO-204AH/DO-35 axial package format. All substitute parts maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories:

Direct Packaging Equivalent: BZX79-C30,113 maintains identical electrical specifications and Cut Tape packaging format, differing only in supplier device package designation suffix.

Parametric Equivalents with Tighter Tolerance: BZX79-B30,133 and BZX79-B30,143 provide ±2% voltage tolerance (versus ±5% of the main part) while maintaining all other electrical parameters. These parts differ in packaging format (Bulk versus Cut Tape) and reverse leakage measurement conditions.

All substitute parts are Active status products with ROHS3 compliance and unlimited moisture sensitivity rating.

Parameter Comparison

Parameter	BZX79-C30,133 (Main)	BZX79-C30,113	BZX79-B30,133	BZX79-B30,143
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	NXP USA Inc.	Nexperia USA Inc.
Voltage - Zener (Nom)	30 V	30 V	30 V	30 V
Tolerance	±5%	±5%	±2%	±2%
Power - Max	400 mW	400 mW	400 mW	400 mW
Impedance (Max)	80 Ohms	80 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 700 mV	50 nA @ 700 mV	50 nA @ 21 V	50 nA @ 21 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-65 to 200 °C	-65 to 200 °C	-65 to 200 °C	-65 to 200 °C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Supplier Device Package	ALF2	ALF2	ALF2	ALF2
Packaging Format	Cut Tape (CT)	Cut Tape (CT)	Bulk	Cut Tape (CT)
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)

Engineering Selection Recommendations

BZX79-C30,113 is the primary direct substitute when Cut Tape packaging is required and ±5% voltage tolerance is acceptable. This part maintains identical electrical specifications and packaging format, with higher inventory availability (20990 pieces) compared to the main part.

BZX79-B30,143 is selected when Cut Tape packaging is required and tighter ±2% voltage tolerance is specified for the application. This part provides improved voltage accuracy while maintaining the same power rating and thermal operating range. Inventory of 6057 pieces supports standard production volumes.

BZX79-B30,133 is selected for high-volume production requiring bulk packaging and ±2% voltage tolerance. This part offers the highest inventory availability (49636 pieces) and is suitable for automated assembly processes. Bulk packaging reduces per-unit cost for large-quantity orders.

All substitute parts maintain Active product status and full compliance with applicable regulatory standards. Selection between substitutes depends on packaging format requirements (Cut Tape versus Bulk) and voltage tolerance specifications (±5% versus ±2%).

Frequently Asked Questions (FAQ)

Q: Can BZX79-C30,113 be used as a direct replacement for BZX79-C30,133?

A: Yes. Both parts are identical in electrical specifications (30 V nominal, 400 mW power, ±5% tolerance) and physical packaging (DO-204AH/DO-35 axial, ALF2 supplier package). Both are supplied in Cut Tape format. The parts are functionally interchangeable.

Q: What is the difference between the ±5% tolerance parts and the ±2% tolerance parts?

A: The BZX79-C30,133 and BZX79-C30,113 are specified with ±5% zener voltage tolerance, while BZX79-B30,133 and BZX79-B30,143 are specified with ±2% tolerance. The tighter ±2% tolerance provides improved voltage accuracy for applications requiring stricter regulation. All other electrical parameters remain identical.

Q: Can I use BZX79-B30,133 (Bulk packaging) in place of BZX79-C30,133 (Cut Tape)?

A: Yes, from an electrical and mechanical standpoint. Both parts use the same DO-204AH/DO-35 axial package and ALF2 supplier package. However, BZX79-B30,133 is supplied in Bulk format rather than Cut Tape. This substitution is suitable when bulk packaging is compatible with your assembly process and when ±2% voltage tolerance is acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: BZX79-C30,133, BZX79-C30,113, and BZX79-B30,143 are explicitly specified as ROHS3 Compliant. RoHS compliance status for BZX79-B30,133 is not specified in the provided data.

Q: What is the operating temperature range for these zener diodes?

A: All parts in this substitution group operate across the temperature range of -65°C to 200°C, supporting both industrial and high-temperature applications.

Q: Do these parts have moisture sensitivity concerns?

A: All parts with specified Moisture Sensitivity Level are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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