BZX84C16-7 Equivalent & Substitute Parts

Part Overview

The BZX84C16-7 is a 16 V, 300 mW Zener diode manufactured by Diodes Incorporated in SOT-23-3 surface mount packaging. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. The part operates across a temperature range of -65°C to 150°C with ±6% voltage tolerance and is classified as RoHS non-compliant.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	16 V
Tolerance	±6%
Power - Max	300 mW
Impedance (Max)	40 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 11.2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3

Substitute Part Grouping Explanation

Substitution of the BZX84C16-7 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 16 V nominal
Package type: SOT-23-3 surface mount
Operating temperature range: -65°C to 150°C minimum
Forward voltage: 900 mV @ 10 mA
Impedance: 40 Ohms maximum

Secondary Compatibility Factors:

Power dissipation rating (300 mW or higher)
Voltage tolerance (±6% or tighter)
Reverse leakage current (100 nA @ 11.2 V or lower)
RoHS compliance status
Product availability and active status

Substitute parts are grouped into three categories based on electrical equivalence and manufacturing source: Diodes Incorporated parametric equivalents, Nexperia manufacturer-recommended alternatives, and cross-manufacturer substitutes from onsemi and Micro Commercial Co. Parts with different zener voltages (22 V) are included as extended alternatives for applications where voltage adjustment is permissible.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Temp Range	Package	RoHS Status	Product Status
BZX84C16-7	Diodes Incorporated	16 V	±6%	300 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	Non-compliant	Discontinued
BZX84B16-7-F	Diodes Incorporated	16 V	±2%	300 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant	Active
BZX84C16-7-F	Diodes Incorporated	16 V	±6%	300 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant	Active
BZX84-C16,215	Nexperia USA Inc.	16 V	±5%	250 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	TO-236AB	ROHS3 Compliant	Active
BZX84-C16,235	Nexperia USA Inc.	16 V	±5%	250 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	TO-236AB	ROHS3 Compliant	Active
BZX84C16-TP	Micro Commercial Co	16 V	±5%	350 mW	40 Ω	900 mV @ 10 mA	-55°C ~ 150°C	SOT-23	ROHS3 Compliant	Active
BZX84C16LT1G	onsemi	16 V	±6%	225 mW	40 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant	Active
MMBZ5246-TP	Micro Commercial Co	16 V	±5%	350 mW	17 Ω	900 mV @ 10 mA	-55°C ~ 150°C	SOT-23	ROHS3 Compliant	Active
MMBZ5246BLT1G	onsemi	16 V	±5%	225 mW	17 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant	Active
BZX84B22LT1G	onsemi	22 V	±2%	225 mW	55 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant	Active
CMPZ5251B TR PBFREE	Central Semiconductor Corp	22 V	±5%	350 mW	29 Ω	900 mV @ 10 mA	-65°C ~ 150°C	SOT-23	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Equivalents (16 V Zener Voltage):

The BZX84C16-7-F from Diodes Incorporated is the direct functional equivalent with identical electrical specifications and active product status. This part maintains the ±6% tolerance, 300 mW power rating, and SOT-23-3 packaging while providing ROHS3 compliance. The BZX84B16-7-F offers improved voltage tolerance (±2%) with the same power rating and package, suitable for applications requiring tighter voltage regulation.

Nexperia Alternatives (BZX84-C16,215 and BZX84-C16,235):

These Nexperia parts provide 16 V zener voltage with AEC-Q101 automotive qualification and ROHS3 compliance. The trade-off is reduced power dissipation (250 mW versus 300 mW) and slightly relaxed voltage tolerance (±5%). These parts are suitable for applications where automotive-grade reliability is required and power dissipation does not exceed 250 mW.

onsemi Alternatives (BZX84C16LT1G and MMBZ5246BLT1G):

Both onsemi parts maintain 16 V zener voltage and full temperature range (-65°C to 150°C). The BZX84C16LT1G provides 225 mW power rating with ±6% tolerance. The MMBZ5246BLT1G offers 225 mW with ±5% tolerance and lower impedance (17 Ω), providing superior high-frequency performance characteristics.

Micro Commercial Co Alternatives (BZX84C16-TP and MMBZ5246-TP):

Both Micro Commercial Co parts deliver 16 V zener voltage with 350 mW power rating, exceeding the original specification. The BZX84C16-TP maintains 40 Ω impedance, while MMBZ5246-TP provides lower impedance (17 Ω). Operating temperature range is reduced to -55°C to 150°C.

Extended Alternatives (22 V Zener Voltage):

The BZX84B22LT1G and CMPZ5251B are included for applications where circuit design permits higher zener voltage. These parts are not direct substitutes but represent alternative voltage regulation points within the same package family.

All recommended substitutes carry ROHS3 compliance and active product status, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can BZX84C16-7-F be used as a direct replacement for BZX84C16-7?

A: Yes. The BZX84C16-7-F is a direct parametric equivalent with identical zener voltage (16 V), power rating (300 mW), impedance (40 Ω), and package (SOT-23-3). The primary difference is active product status and ROHS3 compliance. Electrical performance is equivalent.

Q: What is the difference between BZX84B16-7-F and BZX84C16-7-F?

A: Both parts share identical zener voltage, power rating, impedance, and package. The primary difference is voltage tolerance: BZX84B16-7-F provides ±2% tolerance compared to ±6% for BZX84C16-7-F. The B-series part is suitable for applications requiring tighter voltage regulation.

Q: Why do Nexperia parts (BZX84-C16,215 and BZX84-C16,235) have lower power ratings?

A: Nexperia parts are rated for 250 mW maximum power dissipation versus 300 mW for the original BZX84C16-7. These parts are suitable for applications where power dissipation remains below 250 mW. Both parts include AEC-Q101 automotive qualification, making them suitable for automotive applications.

Q: What is the advantage of MMBZ5246BLT1G over BZX84C16LT1G?

A: Both onsemi parts maintain 16 V zener voltage and full temperature range. The MMBZ5246BLT1G provides lower impedance (17 Ω versus 40 Ω), resulting in superior high-frequency performance and faster transient response. Power rating is identical at 225 mW.

Q: Can I use BZX84C16-TP or MMBZ5246-TP if my application operates below -55°C?

A: No. Both Micro Commercial Co parts are rated for -55°C to 150°C operating temperature, which does not meet the original -65°C minimum specification. Use onsemi or Diodes Incorporated alternatives for applications requiring -65°C operation.

Q: Are 22 V zener diodes (BZX84B22LT1G, CMPZ5251B) suitable replacements?

A: No. These parts have different zener voltage (22 V versus 16 V) and are not direct substitutes. They are included as extended alternatives only for applications where circuit design permits higher voltage regulation points. Zener voltage must match circuit requirements.

Q: What packaging differences exist between SOT-23-3 and TO-236AB?

A: SOT-23-3 and TO-236AB are equivalent package designations for the same physical form factor. Both refer to a three-terminal surface mount package with identical pin spacing and dimensions. Parts specified as either designation are mechanically and electrically interchangeable.

Q: Which substitute part offers the best high-frequency performance?

A: MMBZ5246BLT1G provides the lowest impedance (17 Ω) among 16 V alternatives, resulting in superior high-frequency response and faster transient settling. This part is suitable for applications requiring rapid voltage regulation response.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts carry ROHS3 compliance status. The original BZX84C16-7 is RoHS non-compliant. Substitution with any recommended part improves regulatory compliance for new designs and production.

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