BZT52C15-13 Equivalent & Substitute Parts

Part Overview

The BZT52C15-13 is a Zener diode rated at 15 V nominal voltage with 500 mW maximum power dissipation in a surface mount SOD-123 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. The part operates across a temperature range of -65°C to 150°C and features ±6% voltage tolerance with RoHS non-compliant status.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	15	V
Tolerance	±6%	%
Power - Max	500	mW
Impedance (Max)	30	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C
Mounting Type	Surface Mount
Package / Case	SOD-123

Substitute Part Grouping Explanation

Substitution of the BZT52C15-13 is determined by the following critical parameters: nominal Zener voltage (15 V), package type (SOD-123 surface mount), operating temperature range (-65°C to 150°C), and forward voltage characteristics. Substitute parts are grouped into three categories based on their relationship to the original specification:

Parametric Equivalents maintain identical electrical specifications including 15 V nominal voltage, 500 mW power rating, ±6% tolerance, 30 Ohms maximum impedance, and 900 mV forward voltage. These parts differ only in packaging format (Tape & Reel or Cut Tape) and product status (Active vs. Discontinued).

Upgrade Parts provide the same 15 V nominal voltage and SOD-123 package but with reduced power ratings (200 mW) or modified impedance characteristics. These are suitable for applications where lower power dissipation is acceptable.

Manufacturer Recommended Parts offer 15 V nominal voltage in SOD-123 packages with variations in power rating (200-410 mW), tolerance (±2% to ±5%), and impedance (16-30 Ohms). These parts from alternative manufacturers (Vishay, onsemi, Central Semiconductor, Comchip Technology) provide functional equivalence with different electrical performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Vf @ 10mA (mV)	Temp Range (°C)	Package	Status	RoHS
BZT52C15-13	Diodes Inc	15	±6%	500	30	900	-65 to 150	SOD-123	Discontinued	Non-compliant
BZT52C15-13-F	Diodes Inc	15	±6%	500	30	900	-65 to 150	SOD-123	Active	ROHS3
BZT52C15-7-F	Diodes Inc	15	±6%	500	30	900	-65 to 150	SOD-123	Active	ROHS3
BZT52C15-TP	Micro Commercial Co	15	±6%	200	30	900	-65 to 150	SOD-123	Active	ROHS3
BZT52B15-E3-08	Vishay	15	±2%	410	30	Not specified	-65 to 150	SOD-123	Active	ROHS3
BZT52B15-E3-18	Vishay	15	±2%	410	30	Not specified	-65 to 150	SOD-123	Active	ROHS3
BZT52B15-HE3-08	Vishay	15	±2%	410	30	Not specified	-65 to 150	SOD-123	Obsolete	ROHS3
CMHZ5245B TR PBFREE	Central Semiconductor	15	±5%	500	16	900	-65 to 150	SOD-123	Active	ROHS3
CZRW5245B-G	Comchip Technology	15	±5%	350	16	900	-65 to 150	SOD-123	Active	ROHS3
MMSZ4702T1G	onsemi	15	±5%	500	Not specified	900	-55 to 150	SOD-123	Active	ROHS3
MMSZ5245ET1G	onsemi	15	±5%	500	16	900	-55 to 150	SOD-123	Active	ROHS3

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Drop-In Replacement)

BZT52C15-13-F and BZT52C15-7-F from Diodes Incorporated are direct parametric equivalents with identical electrical specifications (15 V, ±6%, 500 mW, 30 Ohms impedance). Both parts are Active status with ROHS3 compliance, addressing the RoHS non-compliance limitation of the original BZT52C15-13. Selection between these two depends on packaging requirements: BZT52C15-13-F is supplied in Tape & Reel format, while BZT52C15-7-F is supplied in Cut Tape with Digi-Reel option.

Alternative Manufacturers with Full Specification Match

MMSZ4702T1G (onsemi) and MMSZ5245ET1G (onsemi) provide 15 V, 500 mW ratings in SOD-123 packages with ±5% tolerance and ROHS3 compliance. MMSZ5245ET1G includes specified impedance of 16 Ohms. Both parts are Active status with extensive inventory availability. Operating temperature range for onsemi parts is -55°C to 150°C, which is narrower at the lower end compared to the original -65°C specification.

CMHZ5245B TR PBFREE (Central Semiconductor) matches the 15 V, 500 mW specification with ±5% tolerance and 16 Ohms impedance. This part is Active status with ROHS3 compliance and full -65°C to 150°C temperature range.

Reduced Power Rating Alternative

BZT52C15-TP (Micro Commercial Co) provides 15 V nominal voltage with reduced 200 mW power rating. This part is suitable for applications where power dissipation requirements are lower than the original 500 mW specification. It maintains ±6% tolerance, 30 Ohms impedance, and full temperature range compatibility.

Vishay BZT52B Series Options

BZT52B15-E3-08 and BZT52B15-E3-18 (Vishay) offer improved ±2% tolerance with 410 mW power rating. These parts are Active status with ROHS3 compliance and maintain the full -65°C to 150°C operating range. BZT52B15-HE3-08 is Obsolete status and should not be selected for new designs.

Comchip Technology Alternative

CZRW5245B-G provides 15 V nominal voltage with 350 mW power rating, ±5% tolerance, and 16 Ohms impedance. This part is suitable for applications with moderate power dissipation requirements and is Active status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can BZT52C15-13-F be used as a direct replacement for BZT52C15-13?

A: Yes. BZT52C15-13-F is a parametric equivalent with identical electrical specifications (15 V, ±6%, 500 mW, 30 Ohms impedance, 900 mV forward voltage). The primary difference is product status (Active vs. Discontinued) and RoHS compliance (ROHS3 vs. non-compliant). The packaging format differs (Tape & Reel vs. unspecified), which may affect procurement and assembly processes.

Q: What is the difference between BZT52C15-13-F and BZT52C15-7-F?

A: Both parts are parametric equivalents from Diodes Incorporated with identical electrical specifications. The difference is packaging format: BZT52C15-13-F is supplied in Tape & Reel (TR) format, while BZT52C15-7-F is supplied in Cut Tape (CT) with Digi-Reel option. Selection depends on assembly equipment compatibility and procurement preferences.

Q: Can I use MMSZ4702T1G or MMSZ5245ET1G as replacements?

A: Yes, both onsemi parts provide 15 V, 500 mW ratings in SOD-123 packages with ±5% tolerance and ROHS3 compliance. The operating temperature range is -55°C to 150°C, which is narrower at the lower end than the original -65°C specification. Verify that your application does not require operation below -55°C before selection.

Q: What are the advantages of Vishay BZT52B15-E3-08 or BZT52B15-E3-18?

A: These Vishay parts offer improved ±2% voltage tolerance compared to the original ±6% specification, with 410 mW power rating. Both are Active status with ROHS3 compliance and full -65°C to 150°C temperature range. The tighter tolerance provides better voltage regulation characteristics. BZT52B15-E3-08 is supplied in Tape & Reel format, while BZT52B15-E3-18 is supplied in Cut Tape format.

Q: Can I use BZT52C15-TP if my application requires lower power dissipation?

A: Yes. BZT52C15-TP is rated at 200 mW maximum power, which is suitable for applications with lower power dissipation requirements. It maintains the 15 V nominal voltage, ±6% tolerance, 30 Ohms impedance, and full -65°C to 150°C temperature range. Verify that your circuit design does not exceed 200 mW power dissipation before selection.

Q: What is the difference between 30 Ohms and 16 Ohms impedance specifications?

A: Impedance (Zzt) affects the dynamic resistance of the Zener diode at specified test conditions. Lower impedance (16 Ohms) provides better voltage regulation under load changes. Parts with 30 Ohms impedance (original BZT52C15-13, BZT52C15-13-F, BZT52C15-7-F, BZT52C15-TP) are functionally equivalent for most applications. Parts with 16 Ohms impedance (CMHZ5245B, CZRW5245B-G, MMSZ5245ET1G) offer improved regulation characteristics.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original BZT52C15-13 is RoHS non-compliant. If RoHS compliance is required for your application, select from the Active status substitute parts listed in this document.

Q: Can I use parts with ±5% tolerance instead of ±6%?

A: Yes. Parts with ±5% tolerance (CMHZ5245B, CZRW5245B-G, MMSZ4702T1G, MMSZ5245ET1G) provide tighter voltage tolerance than the original ±6% specification. This represents an improvement in voltage regulation accuracy. Verify that your circuit design can accommodate the tighter tolerance range before selection.

Q: What is the significance of the operating temperature range difference (-65°C vs. -55°C)?

A: The original BZT52C15-13 operates from -65°C to 150°C. onsemi parts (MMSZ4702T1G, MMSZ5245ET1G) operate from -55°C to 150°C. If your application requires operation below -55°C, select parts with the full -65°C lower temperature limit. For applications operating above -55°C, both temperature ranges are equivalent.

Q: Which substitute part has the highest inventory availability?

A: MMSZ4702T1G (onsemi) has the highest inventory with 2,903,400 pieces in stock. This part provides 15 V, 500 mW rating with ±5% tolerance and ROHS3 compliance. MMSZ5245ET1G (onsemi) has 41,400 pieces in stock. Both parts offer excellent availability for production requirements.

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