BZT52C20-13 Equivalent & Substitute Parts

Part Overview

The BZT52C20-13 is a Zener diode rated at 20 V nominal voltage with 500 mW power dissipation in a surface mount SOD-123 package. Manufactured by Diodes Incorporated, this component is designed for voltage regulation and protection applications in electronic circuits. The BZT52C20-13 is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	20 V
Power - Max	500 mW
Tolerance	±6%
Impedance (Max)	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 14 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature Range	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	SOD-123

Substitute Part Grouping Explanation

Substitution of the BZT52C20-13 is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Zener voltage: 20 V nominal
Power rating: 500 mW maximum
Package type: SOD-123 surface mount
Mounting type: Surface mount

Secondary Compatibility Parameters:

Voltage tolerance: ±6% or tighter
Impedance (Max): 55 Ohms or lower
Reverse leakage current: 100 nA or lower at specified reverse voltage
Forward voltage: 900 mV maximum at 10 mA
Operating temperature range: Must encompass or exceed -65°C to 150°C

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (Diodes Incorporated) and manufacturer-recommended alternatives from onsemi. All listed substitutes maintain electrical performance within the specified parameters and are available in compatible packaging configurations.

Parameter Comparison

Parameter	BZT52C20-13	BZT52C20-7-F	MMSZ5250BT1G	SZMMSZ20T1G
Manufacturer	Diodes Incorporated	Diodes Incorporated	onsemi	onsemi
Voltage - Zener (Nom)	20 V	20 V	20 V	20 V
Tolerance	±6%	±6%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	55 Ohms	55 Ohms	25 Ohms	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 14 V	100 nA @ 14 V	100 nA @ 15 V	50 nA @ 14 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	SOD-123	SOD-123	SOD-123	SOD-123
Product Status	Discontinued	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BZT52C20-7-F (Diodes Incorporated): This part is the direct parametric equivalent to the BZT52C20-13, differing only in packaging configuration (Tape & Reel versus individual packaging). Electrical specifications are identical. The BZT52C20-7-F is currently in active production status with ROHS3 compliance and significantly higher inventory availability (74,200 units). This part is the primary recommendation for direct replacement in new designs and production runs.

MMSZ5250BT1G (onsemi): This part meets all critical electrical parameters with improved tolerance (±5% versus ±6%) and lower impedance (25 Ohms versus 55 Ohms), providing superior voltage regulation characteristics. The operating temperature range is reduced to -55°C to 150°C. ROHS3 compliance and high inventory availability (149,300 units) support production continuity. This part is suitable for applications where the reduced lower temperature limit is acceptable.

SZMMSZ20T1G (onsemi): This part maintains identical impedance (55 Ohms) and improved tolerance (±5%) with lower reverse leakage current (50 nA versus 100 nA), providing enhanced performance characteristics. The component carries AEC-Q101 automotive qualification and is suitable for automotive and high-reliability applications. Operating temperature range is -55°C to 150°C. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the BZT52C20-7-F directly replace the BZT52C20-13 in existing designs?

A: Yes. The BZT52C20-7-F is electrically and mechanically identical to the BZT52C20-13. The difference is packaging configuration (Tape & Reel versus individual packaging). Both parts are SOD-123 surface mount packages with identical electrical specifications.

Q: What is the primary difference between the Diodes Incorporated and onsemi substitutes?

A: The Diodes Incorporated BZT52C20-7-F maintains exact electrical specifications. The onsemi parts (MMSZ5250BT1G and SZMMSZ20T1G) offer improved tolerance (±5% versus ±6%) and lower reverse leakage current, with the trade-off of a reduced lower operating temperature limit (-55°C versus -65°C).

Q: Is the MMSZ5250BT1G suitable for applications requiring -65°C operation?

A: No. The MMSZ5250BT1G operates from -55°C to 150°C. Applications requiring -65°C minimum temperature must use either the BZT52C20-13, BZT52C20-7-F, or SZMMSZ20T1G.

Q: What does AEC-Q101 qualification on the SZMMSZ20T1G indicate?

A: AEC-Q101 qualification indicates the SZMMSZ20T1G meets automotive industry reliability and quality standards. This part is suitable for automotive applications and high-reliability environments where component qualification is required.

Q: Are all substitute parts RoHS compliant?

A: The BZT52C20-13 is RoHS non-compliant. All substitute parts (BZT52C20-7-F, MMSZ5250BT1G, and SZMMSZ20T1G) are ROHS3 compliant, meeting current environmental regulations.

Q: Which substitute part has the lowest impedance?

A: The MMSZ5250BT1G has the lowest impedance at 25 Ohms maximum, compared to 55 Ohms for the other parts. Lower impedance provides improved voltage regulation performance.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, all parts use the SOD-123 surface mount package with identical pinout and footprint. PCB designs require no modification for substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message