BZX84C10-7 Equivalent & Substitute Parts

Part Overview

The BZX84C10-7 is a 10 V zener diode rated at 300 mW in a surface mount SOT-23-3 package, manufactured by Diodes Incorporated. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical or superior electrical specifications and package compatibility, while substitute parts offer functional alternatives with minor parameter variations acceptable for most circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	10	V
Power - Max	300	mW
Tolerance	±6%	—
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	200	nA @ 7 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—

Substitute Part Grouping Explanation

Substitution of the BZX84C10-7 is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 10 V (nominal)
Package compatibility: SOT-23-3 / TO-236-3 / SC-59
Mounting type: Surface Mount
Operating temperature range: -65°C to 150°C minimum
Impedance (Max): 20 Ohms or lower
Reverse leakage current: 200 nA @ 7 V or lower
Forward voltage: 900 mV @ 10 mA maximum

Secondary Variation Parameters:

Power dissipation: 300 mW or higher acceptable
Tolerance: ±6% or tighter acceptable
Product status: Active preferred over discontinued

Substitute parts are grouped into three categories based on electrical equivalence and availability:

Parametric Equivalents – Identical zener voltage and package with minor tolerance or power rating variations
Direct Manufacturer Alternatives – Alternative manufacturers with equivalent specifications
Manufacturer Recommended Substitutes – OEM-recommended parts with automotive qualification or enhanced specifications

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Power (mW)	Tolerance	Zzt (Ohms)	Reverse Leakage @ Vr	Vf (Max) @ If	Temp Range (°C)	Package	Product Status	RoHS
BZX84C10-7	Diodes Incorporated	10	300	±6%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Discontinued	Non-compliant
BZX84B10-7-F	Diodes Incorporated	10	300	±2%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84C10-7-F	Diodes Incorporated	10	300	±6%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84C10 TR PBFREE	Central Semiconductor Corp	10	350	±5%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84-A10,215	Nexperia USA Inc.	10	250	±1%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84-C10,215	NXP USA Inc.	10	250	±5%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	Not specified
BZX84-C10,235	Nexperia USA Inc.	10	250	±5%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84C10-TP	Micro Commercial Co	10	350	±5%	20	200 nA @ 7 V	900 mV @ 10 mA	-55 to 150	SOT-23-3	Active	ROHS3 Compliant
BZX84C10LT1G	onsemi	10	225	±6%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
MMBZ5240BLT1G	onsemi	10	225	±5%	17	3 µA @ 8 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant
SZBZX84C10LT1G	onsemi	10	225	±6%	20	200 nA @ 7 V	900 mV @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

First Priority – Direct Parametric Equivalents:

BZX84C10-7-F (Diodes Incorporated) and BZX84B10-7-F (Diodes Incorporated) are the primary substitutes. Both maintain identical zener voltage (10 V), impedance (20 Ohms), and power rating (300 mW). BZX84C10-7-F is an active product with identical specifications to the discontinued BZX84C10-7, differing only in packaging format (Cut Tape & Digi-Reel vs. original packaging). BZX84B10-7-F offers superior tolerance (±2% vs. ±6%), providing tighter voltage regulation. Both are ROHS3 compliant and maintain full backward compatibility.

Second Priority – Higher Power Rating Alternatives:

BZX84C10 TR PBFREE (Central Semiconductor Corp) and BZX84C10-TP (Micro Commercial Co) provide 350 mW power dissipation, exceeding the original 300 mW specification. These parts are suitable for applications requiring additional thermal margin. Both maintain 10 V zener voltage, 20 Ohms impedance, and SOT-23-3 packaging. BZX84C10-TP operates from -55°C minimum (vs. -65°C), which is acceptable for most industrial applications.

Third Priority – Automotive-Qualified Alternatives:

BZX84-A10,215 (Nexperia USA Inc.) and BZX84-C10,235 (Nexperia USA Inc.) carry AEC-Q101 automotive qualification. These parts feature 250 mW power rating and tighter tolerance specifications (±1% and ±5% respectively). Selection of automotive-qualified parts is required for automotive applications or when enhanced reliability is specified.

Fourth Priority – Lower Power Alternatives:

BZX84C10LT1G (onsemi), MMBZ5240BLT1G (onsemi), and SZBZX84C10LT1G (onsemi) provide 225 mW power dissipation. These parts are suitable for applications where the original 300 mW specification exceeds circuit requirements. SZBZX84C10LT1G includes AEC-Q101 automotive qualification. MMBZ5240BLT1G features lower impedance (17 Ohms vs. 20 Ohms) and higher reverse leakage current (3 µA @ 8 V vs. 200 nA @ 7 V), requiring circuit-level verification before substitution.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant, addressing the non-compliant status of the original BZX84C10-7. Moisture sensitivity level remains 1 (Unlimited) across all alternatives, eliminating special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can BZX84C10-7-F directly replace BZX84C10-7 in existing designs?

A: Yes. BZX84C10-7-F maintains identical electrical specifications (10 V zener voltage, 300 mW power, ±6% tolerance, 20 Ohms impedance) and SOT-23-3 package compatibility. The primary difference is packaging format (Cut Tape & Digi-Reel vs. original). No circuit modifications are required.

Q: What is the difference between BZX84B10-7-F and BZX84C10-7-F?

A: Both are manufactured by Diodes Incorporated and maintain identical zener voltage, power rating, and package. The primary difference is tolerance: BZX84B10-7-F offers ±2% tolerance compared to ±6% for BZX84C10-7-F. Selection depends on voltage regulation precision requirements. BZX84B10-7-F is preferred for applications requiring tighter voltage control.

Q: Are lower power alternatives (225 mW) suitable for designs originally specified at 300 mW?

A: Lower power alternatives are suitable only if circuit analysis confirms that maximum power dissipation does not exceed 225 mW under worst-case operating conditions. Thermal margin is reduced with lower power ratings. Circuit-level verification is required before substitution.

Q: What is the significance of AEC-Q101 qualification on automotive-grade parts?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. Selection of AEC-Q101 qualified parts (BZX84-A10,215, BZX84-C10,235, SZBZX84C10LT1G) is mandatory for automotive applications. Non-automotive applications may use non-qualified alternatives.

Q: Can MMBZ5240BLT1G replace BZX84C10-7 despite different reverse leakage specifications?

A: MMBZ5240BLT1G maintains 10 V zener voltage and SOT-23-3 package compatibility but exhibits higher reverse leakage current (3 µA @ 8 V vs. 200 nA @ 7 V) and lower impedance (17 Ohms vs. 20 Ohms). Substitution requires circuit-level analysis to confirm that increased leakage current does not degrade circuit performance, particularly in high-impedance bias networks.

Q: What packaging format differences exist among substitute parts?

A: Substitute parts are available in three packaging formats: Cut Tape & Digi-Reel (CT), Tape & Reel (TR), and Bulk. Cut Tape & Digi-Reel format is suitable for small-quantity assembly and prototyping. Tape & Reel format is optimized for high-volume automated assembly. Bulk packaging is used for manual assembly or custom packaging. Electrical specifications remain identical across packaging formats.

Q: Is the operating temperature range difference between BZX84C10-TP (-55°C to 150°C) and BZX84C10-7 (-65°C to 150°C) significant?

A: The -55°C minimum operating temperature of BZX84C10-TP is acceptable for most industrial and commercial applications. Substitution is not recommended for applications requiring operation below -55°C or for military/aerospace specifications requiring -65°C minimum temperature.

Q: Why do some substitutes have lower power ratings than the original part?

A: Lower power ratings (225 mW vs. 300 mW) reflect different thermal design approaches by alternative manufacturers. These parts are suitable for applications where actual power dissipation is lower than the original specification. Selection should be based on circuit requirements rather than maximum rated power.

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