BZX84C11W-7-F Equivalent & Substitute Parts

Part Overview

The BZX84C11W-7-F is a Zener diode manufactured by Diodes Incorporated, rated at 11 V nominal with 200 mW maximum power dissipation in a surface mount SOT-323 package. This component is classified as Active and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Tolerance	±5%	%
Power - Max	200	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-323	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BZX84C11W-7-F are qualified based on the following electrical and mechanical criteria:

Electrical Equivalence Requirements:

Zener voltage (Nom): 11 V ±5% tolerance
Impedance (Max): 20 Ohms
Current - Reverse Leakage @ Vr: 100 nA @ 8 V
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA

Mechanical Compatibility:

Mounting Type: Surface Mount
Package compatibility within the SOT family (SOT-323, SOT-23, TO-236)

Compliance Requirements:

RoHS3 Compliant status
Active product status

The substitute parts BZX84-C11,215 and BZX84-C11,235 meet all electrical parameters and maintain surface mount compatibility. Both substitutes feature higher maximum power ratings (250 mW versus 200 mW) and extended operating temperature ranges, providing design margin without compromising functional equivalence.

Parameter Comparison

Parameter	BZX84C11W-7-F (Main)	BZX84-C11,215 (Substitute)	BZX84-C11,235 (Substitute)
Manufacturer	Diodes Incorporated	Nexperia USA Inc.	NXP USA Inc.
Voltage - Zener (Nom)	11 V	11 V	11 V
Tolerance	±5%	±5%	±5%
Power - Max	200 mW	250 mW	250 mW
Impedance (Max)	20 Ohms	20 Ohms	20 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 8 V	100 nA @ 8 V	100 nA @ 8 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-65°C to 125°C	-65°C to 150°C	-65°C to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-323	TO-236-3 / SC-59 / SOT-23-3	TO-236-3 / SC-59 / SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Grade	—	Automotive	Automotive
Qualification	—	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

BZX84-C11,215 (Nexperia USA Inc.): This substitute is qualified for applications requiring automotive-grade components with AEC-Q101 certification. The TO-236AB package provides mechanical compatibility with standard surface mount assembly processes. The 250 mW power rating and extended temperature range (-65°C to 150°C) offer operational margin beyond the main part specification. ROHS3 compliance and Active product status confirm ongoing manufacturing support.

BZX84-C11,235 (NXP USA Inc.): This substitute is qualified for automotive applications with AEC-Q101 certification and offers the highest inventory availability (30,671 pcs). The SOT-23 package maintains surface mount compatibility. The 250 mW power rating and -65°C to 150°C operating range provide design margin. ROHS3 compliance and Active product status ensure long-term supply continuity.

Both substitutes maintain electrical equivalence across all critical parameters: 11 V nominal zener voltage, ±5% tolerance, 20 Ohms maximum impedance, and identical leakage and forward voltage characteristics. Package differences (SOT-323 versus SOT-23/TO-236) require PCB layout verification but do not affect electrical function.

Frequently Asked Questions (FAQ)

Q: Can BZX84-C11,215 or BZX84-C11,235 be used as direct replacements for BZX84C11W-7-F?

A: Both substitutes are electrically equivalent across all specified parameters: 11 V nominal zener voltage, ±5% tolerance, 20 Ohms impedance, and identical leakage/forward voltage characteristics. Package differences (SOT-323 versus SOT-23/TO-236) require PCB footprint verification. The higher power ratings (250 mW) and extended temperature ranges provide operational margin.

Q: What are the package differences between the main part and substitutes?

A: The BZX84C11W-7-F uses SOT-323 packaging. BZX84-C11,215 uses TO-236AB (equivalent to SC-59/SOT-23-3). BZX84-C11,235 uses SOT-23 (equivalent to TO-236-3/SC-59). All are three-terminal surface mount packages with different physical dimensions. PCB layout and assembly compatibility must be verified before substitution.

Q: Are the substitute parts automotive qualified?

A: Both BZX84-C11,215 and BZX84-C11,235 carry Automotive grade designation and AEC-Q101 qualification. The main part BZX84C11W-7-F does not specify automotive qualification. Substitutes are suitable for automotive applications requiring AEC-Q101 compliance.

Q: What is the impact of the higher power rating on circuit design?

A: The substitute parts are rated at 250 mW versus the main part's 200 mW. This higher rating does not require circuit modification. The substitutes operate within the same voltage and impedance specifications, ensuring functional equivalence in existing circuit designs.

Q: Are all parts ROHS3 compliant?

A: All three parts—BZX84C11W-7-F, BZX84-C11,215, and BZX84-C11,235—are ROHS3 compliant and REACH unaffected, confirming environmental regulatory compliance.

Q: What is the temperature operating range difference?

A: The main part operates from -65°C to 125°C. Both substitutes operate from -65°C to 150°C, providing an additional 25°C margin at the upper temperature limit. This extended range does not affect substitution compatibility in standard applications.

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