BZX84C10 Equivalent & Substitute Parts

Part Overview

The BZX84C10 is an active-status zener diode manufactured by Good-Ark Semiconductor, rated for 10 V nominal zener voltage with 350 mW maximum power dissipation in a surface mount SOT-23 package. This component is used in voltage regulation and protection circuits where precise voltage reference and transient suppression are required. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range, ensuring functional interchangeability in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	10	V
Tolerance	±6%	%
Power - Max	350	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	200	nA @ 7 V
Voltage - Forward (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BZX84C10 is determined by equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Nominal zener voltage of 10 V
Maximum power dissipation of 350 mW
Maximum impedance of 20 Ohms
Reverse leakage current of 200 nA @ 7 V
Forward voltage maximum of 900 mV @ 10 mA
Operating temperature range of -65°C to 150°C

Mechanical Equivalence Criteria:

Surface mount package type SOT-23-3 (TO-236-3, SC-59)
Compliance with ROHS3 and REACH requirements
Moisture sensitivity level MSL 1 (Unlimited)

The BZX84B10 qualifies as a parametric equivalent substitute. While the BZX84B10 exhibits a tighter tolerance specification (±2% versus ±6%), all electrical parameters remain within or equal to the BZX84C10 specification envelope, and mechanical compatibility is maintained through identical package designation and mounting type.

Parameter Comparison

Parameter	BZX84C10	BZX84B10	Match Status
Voltage - Zener (Nom)	10 V	10 V	Equivalent
Tolerance	±6%	±2%	B10 Tighter
Power - Max	350 mW	350 mW	Equivalent
Impedance (Max)	20 Ohms	20 Ohms	Equivalent
Current - Reverse Leakage @ Vr	200 nA @ 7 V	200 nA @ 7 V	Equivalent
Voltage - Forward (Max) @ If	900 mV @ 10 mA	Not Specified	Data Not Provided
Operating Temperature Range	-65 to 150°C	-65 to 150°C	Equivalent
Package / Case	SOT-23-3	SOT-23-3	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

BZX84C10 Primary Selection: The BZX84C10 is the specified component and remains the primary choice for new designs and existing applications. Active product status and full inventory availability (68,100 pcs) support continued procurement without supply constraints.

BZX84B10 Substitute Selection: The BZX84B10 is a valid substitute when the BZX84C10 is unavailable or when design requirements benefit from improved tolerance performance. The ±2% tolerance specification of the BZX84B10 provides enhanced voltage accuracy compared to the ±6% tolerance of the BZX84C10, while maintaining all other electrical and mechanical specifications. Both parts carry identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification). Active product status confirms ongoing manufacturer support for the BZX84B10.

Frequently Asked Questions (FAQ)

Q: Can the BZX84B10 be used as a direct replacement for the BZX84C10?

A: Yes. The BZX84B10 maintains electrical equivalence across all specified parameters including nominal zener voltage (10 V), maximum power dissipation (350 mW), impedance (20 Ohms maximum), reverse leakage current (200 nA @ 7 V), and operating temperature range (-65°C to 150°C). Mechanical compatibility is confirmed through identical SOT-23-3 package designation and surface mount mounting type.

Q: What is the primary difference between these two parts?

A: The BZX84B10 specifies a tighter tolerance of ±2% compared to the BZX84C10 tolerance of ±6%. This results in improved voltage accuracy for the BZX84B10 while all other electrical characteristics remain equivalent.

Q: Are both parts compliant with environmental and regulatory requirements?

A: Yes. Both the BZX84C10 and BZX84B10 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical SOT-23-3 package geometry and surface mount configuration, enabling direct PCB footprint compatibility without layout modifications.

Q: What inventory considerations apply to these substitutes?

A: The BZX84C10 maintains higher inventory availability (68,100 pcs) compared to the BZX84B10 (2,200 pcs). Both parts carry active product status from Good-Ark Semiconductor.

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