BZX79-C11,113 Equivalent & Substitute Parts

Part Overview

The BZX79-C11,113 is an 11 V, 400 mW Zener diode manufactured by Nexperia USA Inc. in the DO-35 axial through-hole package. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating. The device operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance. Equivalent and substitute parts are identified to address inventory availability, tolerance requirements, power rating specifications, and packaging format variations while maintaining functional compatibility in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Tolerance	±5%	—
Power - Max	400	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BZX79-C11,113 are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents maintain identical or superior specifications across all critical parameters: 11 V nominal Zener voltage, 400 mW maximum power rating, 20 Ohms maximum impedance, 100 nA reverse leakage current, and through-hole axial mounting. These parts differ only in voltage tolerance (±2% versus ±5%) or packaging format (Cut Tape versus Bulk). Parametric equivalents include BZX79-B11,113, BZX79-B11,133, and BZX79-C11,133.

Similar Parts share the same 11 V Zener voltage and ±5% tolerance but feature increased power ratings (500 mW versus 400 mW) and modified electrical characteristics. These parts are suitable for applications requiring higher power dissipation capacity. Similar parts include BZX79C11 (Taiwan Semiconductor Corporation) and BZX79C11-T50A (onsemi).

Substitution eligibility is determined by: nominal Zener voltage match, tolerance compatibility, power rating sufficiency, impedance specification, reverse leakage current, and through-hole axial package format.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Temp Range	Packaging	Classification
BZX79-C11,113	Nexperia USA Inc.	11 V	±5%	400 mW	20 Ω	900 mV @ 10 mA	-65 to 200°C	Cut Tape (CT)	Main Part
BZX79-B11,113	Nexperia USA Inc.	11 V	±2%	400 mW	20 Ω	900 mV @ 10 mA	-65 to 200°C	Cut Tape (CT)	Parametric Equivalent
BZX79-B11,133	Nexperia USA Inc.	11 V	±2%	400 mW	20 Ω	900 mV @ 10 mA	-65 to 200°C	Cut Tape (CT)	Parametric Equivalent
BZX79-C11,133	Nexperia USA Inc.	11 V	±5%	400 mW	20 Ω	900 mV @ 10 mA	-65 to 200°C	Cut Tape (CT)	Parametric Equivalent
BZX79-C11,143	NXP Semiconductors	11 V	±5%	400 mW	20 Ω	900 mV @ 10 mA	-65 to 200°C	Bulk	Parametric Equivalent
BZX79C11	Taiwan Semiconductor Corporation	11 V	±5%	500 mW	20 Ω	1.5 V @ 100 mA	-65 to 175°C	Tape & Reel (TR)	Similar Part
BZX79C11-T50A	onsemi	11 V	±5%	500 mW	20 Ω	1.5 V @ 100 mA	-65 to 200°C	Cut Tape (CT)	Similar Part

Engineering Selection Recommendations

Parametric Equivalent Selection (BZX79-B11,113, BZX79-B11,133, BZX79-C11,133, BZX79-C11,143)

These parts are direct functional replacements for the BZX79-C11,113. All parametric equivalents maintain the 11 V nominal Zener voltage, 400 mW power rating, and identical electrical characteristics. Selection among parametric equivalents is determined by:

Voltage tolerance requirements: BZX79-B11 series offers ±2% tolerance for applications requiring tighter voltage regulation compared to the ±5% tolerance of the BZX79-C11 series.

Packaging format: Cut Tape (CT) packaging is suitable for automated assembly processes, while Bulk packaging accommodates manual or alternative assembly methods.

Inventory and lead time: All parametric equivalents are active products with ROHS3 compliance and REACH unaffected status. Selection may be based on stock availability and delivery schedules.

Similar Part Selection (BZX79C11, BZX79C11-T50A)

Similar parts are applicable in applications where increased power dissipation capacity is required. Both BZX79C11 and BZX79C11-T50A feature 500 mW maximum power rating, providing 25% additional power handling compared to the main part. These parts maintain the 11 V nominal Zener voltage and ±5% tolerance.

Operating temperature consideration: BZX79C11 operates to 175°C maximum junction temperature, while BZX79C11-T50A extends to 200°C, matching the main part specification.

Forward voltage characteristics differ: Similar parts specify 1.5 V maximum forward voltage at 100 mA, compared to 900 mV at 10 mA for the main part. This difference reflects the higher current rating and should be evaluated for specific circuit requirements.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the main part.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B11,113 replace BZX79-C11,113 in all applications?

A: Yes. BZX79-B11,113 is a parametric equivalent with superior ±2% voltage tolerance compared to the ±5% tolerance of BZX79-C11,113. All other electrical and mechanical specifications are identical. The tighter tolerance may provide improved voltage regulation in precision applications.

Q: What is the difference between Cut Tape and Bulk packaging?

A: Cut Tape (CT) packaging supplies components on continuous tape suitable for automated pick-and-place assembly equipment. Bulk packaging supplies loose components for manual assembly or alternative handling methods. Electrical specifications are identical; packaging selection depends on assembly process requirements.

Q: Can BZX79C11-T50A be used instead of BZX79-C11,113?

A: BZX79C11-T50A is a similar part with 500 mW power rating versus 400 mW for the main part. It is suitable for applications requiring higher power dissipation. The 11 V nominal Zener voltage and ±5% tolerance match the main part. Forward voltage characteristics differ and should be verified for specific circuit compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: All parametric equivalents (BZX79-B11,113, BZX79-B11,133, BZX79-C11,133, BZX79-C11,143) and similar parts (BZX79C11, BZX79C11-T50A) are ROHS3 compliant and REACH unaffected, matching the regulatory status of the main part BZX79-C11,113.

Q: What determines whether a part is a parametric equivalent versus a similar part?

A: Parametric equivalents maintain identical 11 V nominal Zener voltage, 400 mW power rating, 20 Ohms impedance, and all other critical electrical specifications. Differences are limited to voltage tolerance or packaging format. Similar parts share the 11 V voltage and ±5% tolerance but feature increased 500 mW power rating and modified forward voltage characteristics.

Q: Can BZX79-C11,133 be used in place of BZX79-C11,113?

A: Yes. BZX79-C11,133 is a parametric equivalent with identical electrical specifications and voltage tolerance (±5%). The difference is packaging format: BZX79-C11,133 is supplied in Bulk packaging while BZX79-C11,113 is supplied in Cut Tape. Selection depends on assembly process requirements.

Q: What is the operating temperature range for all substitute parts?

A: Parametric equivalents (BZX79-B11,113, BZX79-B11,133, BZX79-C11,133, BZX79-C11,143) and BZX79C11-T50A operate across -65°C to 200°C. BZX79C11 (Taiwan Semiconductor Corporation) operates to -65°C to 175°C maximum junction temperature. The main part BZX79-C11,113 operates across -65°C to 200°C.

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