CMDZ2L7 TR PBFREE Equivalent & Substitute Parts

Part Overview

The CMDZ2L7 TR PBFREE is a 2.7 V Zener diode manufactured by Central Semiconductor Corp, rated for 250 mW power dissipation in a surface mount SOD-323 package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching nominal Zener voltage, package type, and operating temperature range. Substitutes may vary in power rating, tolerance, impedance, and reverse leakage characteristics within allowable electrical parameters for this diode category.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	2.7	V
Tolerance	±5%	-
Power - Max	250	mW
Impedance (Max)	900	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C
Package / Case	SC-76, SOD-323	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the CMDZ2L7 TR PBFREE is determined by the following critical parameters:

Primary Matching Criteria:

Nominal Zener voltage: 2.7 V (exact match required)
Package type: SOD-323 (SC-76)
Mounting type: Surface Mount
Operating temperature range: -65°C to 150°C or compatible subset

Secondary Compatibility Parameters:

Power rating: 250 mW or higher
Tolerance: ±5% or tighter
Impedance: 900 Ohms or lower
Reverse leakage current: 10 µA @ 1 V or lower

All substitute parts listed maintain the 2.7 V nominal Zener voltage and SOD-323 package. Variations in power dissipation rating, tolerance specification, and impedance are within acceptable substitution parameters for this component category. Parts with higher power ratings (300 mW, 320 mW, 400 mW) provide enhanced thermal margin. Parts with tighter tolerance (±2%) offer improved voltage regulation accuracy.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Ir @ 1V (µA)	Temp Range (°C)	Package
CMDZ2L7 TR PBFREE	Central Semiconductor Corp	2.7	±5%	250	900	10	-65 to 150	SOD-323
BZX384-B2V7,115	Nexperia USA Inc.	2.7	±2%	300	100	20	-65 to 150	SOD-323
BZX384-C2V7,115	Nexperia USA Inc.	2.7	±5%	300	100	20	-65 to 150	SOD-323
BZX384B2V7-E3-08	Vishay General Semiconductor	2.7	±2%	200	100	20	-55 to 150	SOD-323
BZX384C2V7-E3-08	Vishay General Semiconductor	2.7	±5%	200	100	20	-55 to 150	SOD-323
BZX384C2V7-HE3-08	Vishay General Semiconductor	2.7	±5%	200	100	20	-55 to 150	SOD-323
GDZ2V7B-E3-08	Vishay General Semiconductor	2.7	±4%	200	110	100	-55 to 150	SOD-323
MM3Z2V7ST1G	onsemi	2.7	±2%	300	100	50	-65 to 150	SOD-323
PDZ2.7B,135	Nexperia USA Inc.	2.7	±2%	400	100	20	-55 to 150	SOD-323
PZU2.7B1A,115	Nexperia USA Inc.	2.7	±2%	320	100	20	-55 to 150	SOD-323
PZU2.7B2A,115	Nexperia USA Inc.	2.7	±2%	320	100	20	-55 to 150	SOD-323

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

BZX384-C2V7,115 and BZX384-B2V7,115 from Nexperia USA Inc. are primary substitutes. Both maintain the 2.7 V nominal voltage, SOD-323 package, and -65°C to 150°C operating range. BZX384-C2V7,115 matches the ±5% tolerance of the CMDZ2L7 TR PBFREE while providing 300 mW power rating (20% higher than original). BZX384-B2V7,115 offers ±2% tolerance with identical 300 mW rating. Both are ROHS3 compliant with high inventory availability (65,973 and 12,502 units respectively).

Enhanced Performance Alternatives:

MM3Z2V7ST1G from onsemi provides 300 mW power rating with ±2% tolerance and maintains the full -65°C to 150°C temperature range. This part is ROHS3 compliant with 22,877 units in stock.

PDZ2.7B,135 from Nexperia USA Inc. offers the highest power dissipation at 400 mW with ±2% tolerance, suitable for applications requiring maximum thermal margin. Operating temperature range is -55°C to 150°C.

Lower Power Alternatives:

BZX384B2V7-E3-08, BZX384C2V7-E3-08, and BZX384C2V7-HE3-08 from Vishay General Semiconductor provide 200 mW power rating. These are suitable only if circuit design permits reduced power dissipation. Operating temperature range is -55°C to 150°C. BZX384C2V7-HE3-08 includes AEC-Q101 automotive qualification.

Specialized Application:

GDZ2V7B-E3-08 from Vishay General Semiconductor features ±4% tolerance and 200 mW rating. Higher reverse leakage current (100 µA @ 1 V) compared to original specification.

All listed substitutes are Active product status and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can BZX384-C2V7,115 directly replace CMDZ2L7 TR PBFREE?

A: Yes. Both parts share identical 2.7 V nominal Zener voltage, ±5% tolerance, SOD-323 package, and -65°C to 150°C operating temperature range. BZX384-C2V7,115 provides 300 mW power rating compared to 250 mW of the original, offering improved thermal performance. Impedance is lower (100 Ohms vs. 900 Ohms), resulting in better voltage regulation.

Q: What is the difference between BZX384-B2V7,115 and BZX384-C2V7,115?

A: Both are manufactured by Nexperia USA Inc. in SOD-323 package with 2.7 V nominal voltage and 300 mW power rating. The primary difference is tolerance: BZX384-B2V7,115 specifies ±2% tolerance while BZX384-C2V7,115 specifies ±5% tolerance. Selection depends on voltage regulation accuracy requirements.

Q: Are Vishay BZX384 parts compatible with the original CMDZ2L7 TR PBFREE?

A: Vishay BZX384 variants (BZX384B2V7-E3-08, BZX384C2V7-E3-08, BZX384C2V7-HE3-08) maintain 2.7 V nominal voltage and SOD-323 package. However, operating temperature range is -55°C to 150°C (narrower than original -65°C to 150°C). Power rating is 200 mW, which is lower than the original 250 mW. These parts are suitable only if circuit design accommodates the reduced temperature range and power dissipation.

Q: Why does PDZ2.7B,135 have higher power rating than the original?

A: PDZ2.7B,135 is rated for 400 mW power dissipation, compared to 250 mW of CMDZ2L7 TR PBFREE. Higher power rating indicates greater thermal capacity and is suitable for applications with higher current or power dissipation requirements. This part maintains 2.7 V nominal voltage and SOD-323 package but has narrower operating temperature range (-55°C to 150°C).

Q: What does impedance (Zzt) mean in Zener diode selection?

A: Impedance (Zzt) represents the dynamic impedance of the Zener diode at rated current. Lower impedance values indicate better voltage regulation and lower output impedance. CMDZ2L7 TR PBFREE has 900 Ohms impedance, while most substitute parts (BZX384, MM3Z2V7ST1G, PDZ2.7B,135, PZU2.7B series) have 100 Ohms impedance, providing superior voltage stability.

Q: Can I use GDZ2V7B-E3-08 as a substitute?

A: GDZ2V7B-E3-08 maintains 2.7 V nominal voltage and SOD-323 package. However, reverse leakage current is specified at 100 µA @ 1 V, significantly higher than the original 10 µA @ 1 V. This higher leakage may affect circuit performance in applications sensitive to leakage current. Operating temperature range is -55°C to 150°C.

Q: What is the significance of RoHS3 compliance?

A: All listed parts, including the original CMDZ2L7 TR PBFREE, are ROHS3 compliant. This certification confirms the parts are free from restricted substances (lead, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and phthalates) and meet environmental regulations for electronic components.

Q: Does BZX384C2V7-HE3-08 automotive qualification affect general-purpose applications?

A: BZX384C2V7-HE3-08 includes AEC-Q101 automotive qualification, indicating enhanced reliability testing and quality assurance. This qualification does not restrict use in non-automotive applications. The part is suitable for any application requiring 2.7 V, 200 mW, ±5% tolerance Zener diode in SOD-323 package.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) provides components on shorter tape segments. BZX384C2V7-E3-08 is available in both formats. Selection depends on assembly equipment and production volume requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message