BZX79-C8V2,113 Equivalent & Substitute Parts

Part Overview

The BZX79-C8V2,113 is an 8.2 V Zener diode rated for 400 mW power dissipation with ±5% voltage tolerance, manufactured by Nexperia USA Inc. This through-hole component operates across a temperature range of -65°C to 200°C and is packaged in the DO-204AH (DO-35) axial configuration. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when applications require alternative sourcing options due to inventory constraints, supply chain considerations, or packaging format preferences while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	8.2	V
Tolerance	±5%	—
Power - Maximum	400	mW
Impedance (Maximum)	15	Ohms
Current - Reverse Leakage @ 5 V	700	nA
Voltage - Forward (Maximum) @ 10 mA	900	mV
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Supplier Device Package	ALF2	—

Substitute Part Grouping Explanation

Substitute parts for the BZX79-C8V2,113 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share all critical electrical specifications: 8.2 V nominal Zener voltage, 400 mW maximum power rating, 15 Ohms maximum impedance, 700 nA reverse leakage current at 5 V, and identical operating temperature range (-65°C to 200°C). These parts differ only in voltage tolerance (±2% versus ±5%) or packaging format (Bulk versus Cut Tape). Parametric equivalents include BZX79-B8V2,113, BZX79-B8V2,143, BZX79-C8V2,133, and BZX79-C8V2,143.

Direct and Similar Substitutes maintain the 8.2 V Zener voltage and ±5% tolerance but feature increased power ratings (500 mW) and modified forward voltage characteristics. These parts include BZX79C8V2 (Taiwan Semiconductor Corporation) and BZX79C8V2-T50A (Fairchild Semiconductor). The higher power rating permits operation in applications with greater thermal dissipation requirements while maintaining the same voltage regulation function.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (Nominal)	Tolerance	Power (Max)	Zzt (Max)	Ir @ 5V	Vf (Max) @ If	Temp Range	Package	Packaging Format
BZX79-C8V2,113	Nexperia USA Inc.	8.2 V	±5%	400 mW	15 Ω	700 nA	900 mV @ 10 mA	-65 to 200°C	DO-204AH, DO-35	Cut Tape (CT)
BZX79-B8V2,113	NXP Semiconductors	8.2 V	±2%	400 mW	15 Ω	700 nA	900 mV @ 10 mA	-65 to 200°C	DO-204AH, DO-35	Bulk
BZX79-B8V2,143	NXP Semiconductors	8.2 V	±2%	400 mW	15 Ω	700 nA	900 mV @ 10 mA	-65 to 200°C	DO-204AH, DO-35	Bulk
BZX79-C8V2,133	NXP USA Inc.	8.2 V	±5%	400 mW	15 Ω	700 nA	900 mV @ 10 mA	-65 to 200°C	DO-204AH, DO-35	Bulk
BZX79-C8V2,143	NXP USA Inc.	8.2 V	±5%	400 mW	15 Ω	700 nA	900 mV @ 10 mA	-65 to 200°C	DO-204AH, DO-35	Bulk
BZX79C8V2	Taiwan Semiconductor Corporation	8.2 V	±5%	500 mW	15 Ω	700 nA	1.5 V @ 100 mA	-65 to 175°C	DO-204AH, DO-35	Tape & Reel (TR)
BZX79C8V2-T50A	Fairchild Semiconductor	8.2 V	±5%	500 mW	15 Ω	700 nA	1.5 V @ 100 mA	-65 to 200°C	DO-204AH, DO-35	Bulk

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

BZX79-B8V2,113 and BZX79-B8V2,143 are suitable direct replacements when tighter voltage tolerance (±2%) is required. Both parts maintain identical electrical performance at the 400 mW power level and operate across the full -65°C to 200°C temperature range. These parts are manufactured by NXP Semiconductors and carry ROHS3 compliance with unlimited moisture sensitivity rating. Selection between these variants depends on packaging format availability (Bulk format).

BZX79-C8V2,133 and BZX79-C8V2,143 provide identical electrical specifications to the main part number, including ±5% voltage tolerance and 400 mW power rating. Both are manufactured by NXP USA Inc. and are available in Bulk packaging format. These parts are suitable when the original Cut Tape format is unavailable.

For Higher Power Applications:

BZX79C8V2 (Taiwan Semiconductor Corporation) and BZX79C8V2-T50A (Fairchild Semiconductor) are suitable when applications require 500 mW power dissipation capability. Both maintain the 8.2 V nominal voltage and ±5% tolerance. BZX79C8V2-T50A extends the operating temperature range to 200°C, matching the original part specification. The BZX79C8V2 operates to 175°C maximum junction temperature. These parts are appropriate for circuits with higher thermal dissipation requirements while maintaining voltage regulation at 8.2 V.

All substitute parts listed carry ROHS3 compliance and REACH Unaffected status, consistent with the main part number regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B8V2,113 replace BZX79-C8V2,113 in all applications?

A: BZX79-B8V2,113 is a parametric equivalent with tighter voltage tolerance (±2% versus ±5%). It maintains identical electrical performance at 400 mW power rating and operates across the same temperature range (-65°C to 200°C). The tighter tolerance makes it suitable for applications requiring more precise voltage regulation. Substitution is valid from an electrical standpoint; however, applications designed for ±5% tolerance do not require the tighter specification.

Q: What is the difference between Cut Tape (CT) and Bulk packaging formats?

A: Cut Tape (CT) format provides individual components pre-cut and ready for manual placement or small-scale assembly. Bulk format supplies loose components suitable for automated pick-and-place equipment or manual assembly in larger quantities. Electrical performance is identical between formats; selection depends on assembly process requirements and volume.

Q: When should BZX79C8V2-T50A be selected instead of the original BZX79-C8V2,113?

A: BZX79C8V2-T50A is selected when circuit design requires 500 mW power dissipation capability instead of 400 mW. This higher power rating accommodates applications with greater thermal stress or higher reverse current conditions. The part maintains 8.2 V nominal voltage and ±5% tolerance. Operating temperature range extends to 200°C, matching the original specification.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance and REACH Unaffected status, consistent with regulatory requirements for the main part number BZX79-C8V2,113.

Q: What is the significance of the impedance (Zzt) parameter in Zener diode selection?

A: Impedance (Zzt) at maximum rated current determines the dynamic resistance of the Zener diode during regulation. All parts listed maintain 15 Ohms maximum impedance, ensuring consistent voltage regulation performance across the substitute group. This parameter is critical for applications requiring stable output voltage under varying load conditions.

Q: Can BZX79C8V2 (Taiwan Semiconductor Corporation) be used in applications requiring -65°C to 200°C operation?

A: BZX79C8V2 operates to 175°C maximum junction temperature, which is 25°C below the original part specification of 200°C. Applications requiring full -65°C to 200°C operation should use BZX79C8V2-T50A (Fairchild Semiconductor), which extends to 200°C maximum temperature.

Q: What does ±5% voltage tolerance mean for the BZX79-C8V2,113?

A: ±5% voltage tolerance indicates that the Zener voltage will be within the range of 7.79 V to 8.61 V (8.2 V ± 5%). Applications requiring tighter voltage regulation should specify BZX79-B8V2 variants, which provide ±2% tolerance (8.04 V to 8.36 V range).

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