BZX84C10_D87Z Equivalent & Substitute Parts

Part Overview

The BZX84C10_D87Z is a 10 V Zener diode manufactured by onsemi, rated for 350 mW power dissipation in a surface mount SOT-23-3 package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The BZX84C10_D87Z serves voltage regulation and protection applications requiring a 10 V reference with ±6% tolerance and surface mount integration.

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 (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZX84C10_D87Z is determined by the following critical parameters:

Electrical Compatibility Requirements:

Zener voltage: 10 V nominal
Tolerance: ±6% or tighter
Power rating: 350 mW or greater
Impedance (Max): 20 Ohms or less
Reverse leakage current: 200 nA @ 7 V or less
Forward voltage: 900 mV @ 10 mA or less

Mechanical Compatibility Requirements:

Package: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount

Environmental Requirements:

Operating temperature range: -55°C to 150°C or wider
Moisture sensitivity: MSL 1 or equivalent

Substitute parts are grouped into two categories: direct equivalents (matching all parameters) and functional alternatives (meeting or exceeding electrical specifications while maintaining package compatibility).

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Vf (mV)	Temp Range (°C)	Status
BZX84C10_D87Z	onsemi	10	±6%	350	20	900	-55 to 150	Obsolete
BZX84C10LT1G	onsemi	10	±6%	225	20	900	-65 to 150	Active
SZBZX84C10LT1G	onsemi	10	±6%	225	20	900	-65 to 150	Active
BZX84C10-7-F	Diodes Incorporated	10	±6%	300	20	900	-65 to 150	Active
BZX84-A10,215	Nexperia USA Inc.	10	±1%	250	20	900	-65 to 150	Active
BZX84-C10,215	NXP USA Inc.	10	±5%	250	20	900	-65 to 150	Active
BZX84-C10,235	Nexperia USA Inc.	10	±5%	250	20	900	-65 to 150	Active
BZX84B10-TP	Micro Commercial Co	10	±2%	350	20	900	-55 to 150	Active
BZX84B10Q-7-F	Diodes Incorporated	10	±2%	300	20	900	-65 to 150	Active
MMBZ5240B-7-F	Diodes Incorporated	10	±5%	350	17	900	-65 to 150	Active
MMBZ5240B-TP	Micro Commercial Co	10	±5%	350	17	900	-55 to 150	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

BZX84B10-TP (Micro Commercial Co) and MMBZ5240B-7-F (Diodes Incorporated) are the closest functional equivalents to the BZX84C10_D87Z. Both maintain the 350 mW power rating, 10 V nominal Zener voltage, and SOT-23-3 package compatibility. BZX84B10-TP matches the original temperature range (-55°C to 150°C), while MMBZ5240B-7-F extends the lower temperature limit to -65°C. Both parts are active products with established supply chains.

Secondary Substitutes (Acceptable Alternatives):

BZX84C10LT1G and SZBZX84C10LT1G (both onsemi) provide active alternatives with identical electrical specifications except for reduced power rating (225 mW versus 350 mW). These parts are suitable for applications where the full 350 mW dissipation is not required. SZBZX84C10LT1G includes automotive qualification (AEC-Q101) and extended temperature range (-65°C to 150°C).

BZX84C10-7-F (Diodes Incorporated) offers 300 mW power rating with extended temperature range (-65°C to 150°C) and active product status.

Tighter Tolerance Alternatives:

BZX84-A10,215 (Nexperia USA Inc.) provides ±1% tolerance with automotive qualification (AEC-Q101), suitable for applications requiring improved voltage accuracy. BZX84B10Q-7-F (Diodes Incorporated) offers ±2% tolerance with automotive qualification and 300 mW power rating.

Compliance Considerations:

All recommended substitutes are RoHS3 compliant and REACH unaffected. Automotive-qualified variants (SZBZX84C10LT1G, BZX84-A10,215, BZX84B10Q-7-F, BZX84-C10,235) carry AEC-Q101 certification and are suitable for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can BZX84C10LT1G replace BZX84C10_D87Z in all applications?

A: BZX84C10LT1G is electrically compatible for applications where power dissipation does not exceed 225 mW. The original part is rated for 350 mW. If the circuit design requires the full 350 mW capability, use BZX84B10-TP or MMBZ5240B-7-F instead.

Q: What is the difference between BZX84C10-7-F and BZX84B10Q-7-F?

A: Both parts are manufactured by Diodes Incorporated in SOT-23-3 packages with 10 V Zener voltage. BZX84C10-7-F has ±6% tolerance and 300 mW power rating. BZX84B10Q-7-F has ±2% tolerance (tighter), 300 mW power rating, and automotive qualification (AEC-Q101).

Q: Are Nexperia and NXP variants interchangeable?

A: BZX84-A10,215 (Nexperia) and BZX84-C10,215 (NXP) are both active products with SOT-23-3 packages and 10 V Zener voltage. The primary difference is tolerance: BZX84-A10,215 offers ±1% versus ±5% for BZX84-C10,215. Both include automotive qualification. Selection depends on tolerance requirements.

Q: Does MMBZ5240B-7-F have different electrical characteristics?

A: MMBZ5240B-7-F maintains 10 V Zener voltage, 350 mW power rating, and SOT-23-3 package compatibility. The impedance is 17 Ohms (versus 20 Ohms for BZX84C10_D87Z), and reverse leakage is 3 µA @ 8 V (versus 200 nA @ 7 V). These differences are within acceptable ranges for most voltage regulation applications.

Q: Which substitute offers the widest operating temperature range?

A: SZBZX84C10LT1G, BZX84C10-7-F, BZX84-A10,215, BZX84-C10,215, BZX84-C10,235, and BZX84B10Q-7-F all operate from -65°C to 150°C, extending the lower limit by 10°C compared to the original BZX84C10_D87Z (-55°C to 150°C).

Q: Is the packaging difference between Cut Tape and Tape & Reel significant?

A: Packaging format (Cut Tape, Tape & Reel, or Bulk) affects procurement and assembly processes but does not alter electrical or mechanical compatibility. Select based on manufacturing requirements and supplier availability.

Q: Can I use a substitute with tighter tolerance in place of the original?

A: Yes. Parts with tighter tolerance (±1%, ±2%, ±5%) are functionally compatible with the original ±6% specification. Tighter tolerance parts provide improved voltage accuracy and are suitable for applications requiring better regulation performance.

Q: What is the significance of AEC-Q101 qualification?

A: AEC-Q101 certification indicates the part meets automotive industry reliability and quality standards. Parts with this qualification (SZBZX84C10LT1G, BZX84-A10,215, BZX84B10Q-7-F, BZX84-C10,235) are suitable for automotive applications and high-reliability environments.

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