BZX79-C16,113 Equivalent & Substitute Parts

Part Overview

The BZX79-C16,113 is a Zener diode manufactured by Nexperia USA Inc., rated at 16 V nominal with 400 mW maximum power dissipation and ±5% tolerance. This through-hole component operates across a temperature range of -65°C to 200°C and is housed in an ALF2 package (DO-204AH, DO-35 axial configuration). The device is ROHS3 compliant and maintains active product status with 1367 units currently in stock.

Equivalent and substitute parts are identified when design requirements permit tolerance variations, alternative package configurations, or different manufacturers while maintaining core electrical functionality. Substitution becomes necessary due to inventory constraints, manufacturing discontinuation, or design flexibility in tolerance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	16	V
Tolerance	±5%	-
Power - Max	400	mW
Impedance (Max)	40	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	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the BZX79-C16,113 is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage nominal rating: 16 V (±5% tolerance allows 15.2 V to 16.8 V operating range)
Maximum power dissipation: 400 mW or greater
Impedance (Max): 40 Ohms or lower
Mounting type: Through Hole
Package compatibility: DO-204AH, DO-35, or equivalent axial configurations
Operating temperature range: Minimum -65°C to 200°C coverage
Compliance: ROHS3 and REACH status alignment

Parametric Equivalent Classification: Parts meeting all primary criteria with identical or superior electrical specifications qualify as parametric equivalents.

Similar Classification: Parts with minor deviations in secondary parameters (such as voltage tolerance, power rating, or impedance) that remain functionally compatible within circuit design margins are classified as similar substitutes.

Parameter Comparison

Parameter	BZX79-C16,113	BZX79-B16,133	1N965B	BZX79C16-T50A
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	NTE Electronics, Inc	onsemi
Voltage - Zener (Nom)	16 V	16 V	15 V	16 V
Tolerance	±5%	±2%	±5%	±5%
Power - Max	400 mW	400 mW	500 mW	500 mW
Impedance (Max)	40 Ohms	40 Ohms	16 Ohms	40 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 700 mV	50 nA @ 11.2 V	5 µA @ 11.4 V	50 nA @ 11.2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	1.1 V @ 200 mA	1.5 V @ 100 mA
Operating Temperature Range	-65 to 200°C	-65 to 200°C	-65 to 175°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-204AA, DO-7, Axial	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BZX79-B16,133 (Parametric Equivalent): The BZX79-B16,133 from Nexperia USA Inc. provides parametric equivalence to the BZX79-C16,113. Both devices share identical zener voltage (16 V), power rating (400 mW), impedance (40 Ohms), forward voltage characteristics, and operating temperature range (-65°C to 200°C). The BZX79-B16,133 offers improved tolerance specification (±2% versus ±5%), resulting in tighter voltage regulation. Both maintain ROHS3 compliance and identical package configurations (DO-204AH, DO-35, ALF2). This substitute is suitable for applications requiring enhanced voltage accuracy without circuit redesign. Inventory availability is significantly higher at 10105 units.

BZX79C16-T50A (Parametric Equivalent with Enhanced Power Rating): The BZX79C16-T50A from onsemi maintains the 16 V zener voltage and ±5% tolerance specification of the BZX79-C16,113. This device provides increased maximum power dissipation (500 mW versus 400 mW), identical impedance (40 Ohms), and matching operating temperature range (-65°C to 200°C). Package configuration remains compatible (DO-204AH, DO-35). ROHS3 compliance and REACH unaffected status align with the main part. This substitute accommodates applications with higher power dissipation requirements. Inventory availability is 14701 units.

1N965B (Similar Substitute with Voltage and Package Variation): The 1N965B from NTE Electronics, Inc. operates at 15 V nominal zener voltage with ±5% tolerance, resulting in a 0.5 V deviation from the 16 V specification. This device provides enhanced power rating (500 mW) and superior impedance performance (16 Ohms versus 40 Ohms). Operating temperature range extends to -65°C to 175°C, providing 25°C less high-temperature capability. Package configuration differs (DO-204AA, DO-7 versus DO-35), requiring physical layout verification. ROHS3 compliance is maintained; REACH status is vendor undefined. This substitute is applicable only when circuit design accommodates the 1 V voltage differential and physical package change.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B16,133 directly replace BZX79-C16,113 without circuit modification?

A: Yes. The BZX79-B16,133 maintains identical electrical specifications for zener voltage (16 V), power rating (400 mW), impedance (40 Ohms), and operating temperature range (-65°C to 200°C). The improved tolerance (±2% versus ±5%) provides superior voltage regulation. Both devices use identical package configurations (DO-204AH, DO-35, ALF2). No circuit modification is required.

Q: What is the voltage difference when substituting with 1N965B?

A: The 1N965B operates at 15 V nominal zener voltage compared to the 16 V specification of BZX79-C16,113. With ±5% tolerance applied, the 1N965B operates within 14.25 V to 15.75 V, while the BZX79-C16,113 operates within 15.2 V to 16.8 V. This creates a 0.5 V nominal difference. Circuit design must accommodate this voltage shift.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. BZX79-B16,133, 1N965B, and BZX79C16-T50A are all ROHS3 compliant. The main part BZX79-C16,113 is also ROHS3 compliant.

Q: What is the physical package difference between BZX79-C16,113 and 1N965B?

A: BZX79-C16,113 uses DO-204AH, DO-35 axial package configuration. The 1N965B uses DO-204AA, DO-7 axial package configuration. While both are axial through-hole devices, physical dimensions and lead spacing differ. PCB layout verification is required before substitution.

Q: Which substitute offers the highest power dissipation capability?

A: Both BZX79C16-T50A and 1N965B provide 500 mW maximum power dissipation, compared to 400 mW for the BZX79-C16,113. The BZX79C16-T50A maintains all other electrical specifications of the main part, while 1N965B introduces voltage and package variations.

Q: Is the improved tolerance of BZX79-B16,133 (±2%) beneficial for all applications?

A: Improved tolerance (±2% versus ±5%) provides tighter voltage regulation and is beneficial for precision voltage reference applications. For general-purpose zener diode applications with wider tolerance margins, both specifications are functionally equivalent.

Q: What is the impedance significance when comparing these parts?

A: Impedance (Zzt) affects voltage regulation under load changes. Lower impedance provides better voltage stability. The 1N965B offers superior impedance (16 Ohms versus 40 Ohms), while BZX79-B16,133 and BZX79C16-T50A maintain the 40 Ohm specification of the main part.

Q: Can BZX79C16-T50A be used in applications with strict thermal constraints?

A: Yes. BZX79C16-T50A maintains the full operating temperature range of -65°C to 200°C, identical to BZX79-C16,113. The increased power rating (500 mW) does not reduce thermal capability.

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