BZT52C68S RRG Equivalent & Substitute Parts

Part Overview

The BZT52C68S RRG is a 68 V, 200 mW Zener diode manufactured by Taiwan Semiconductor Corporation in SOD-323F surface mount packaging. This component is classified as Active product status and is ROHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits. Substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the SOD-323F package family.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	68	V
Tolerance	±5%	-
Power - Max	200	mW
Impedance (Max)	240	Ohms
Current - Reverse Leakage @ Vr	45	nA @ 47.6 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Operating Temperature	-65 to 150	°C
Mounting Type	Surface Mount	-
Package / Case	SC-90, SOD-323F	-

Substitute Part Grouping Explanation

Substitute parts for the BZT52C68S RRG are grouped based on the following substitution criteria:

Direct Substitutes (Identical Electrical Specifications): Parts that match all critical parameters: 68 V nominal Zener voltage, 200 mW maximum power dissipation, ±5% tolerance, SOD-323F package, and -65°C to 150°C operating temperature range.

Similar Substitutes (Voltage Variant - 62 V): Parts with 62 V nominal Zener voltage instead of 68 V. These are functionally similar but operate at a lower voltage threshold and are suitable only for applications where the lower voltage is acceptable.

Similar Substitutes (Tolerance Variant - ±2%): Parts with tighter tolerance specifications (±2% instead of ±5%). These provide improved voltage accuracy and are suitable for applications requiring higher precision.

The key parameters determining substitution eligibility are: nominal Zener voltage, power rating, tolerance, package type, and operating temperature range.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Operating Temp	Package	Product Status
BZT52C68S RRG	Taiwan Semiconductor Corporation	68 V	±5%	200 mW	240 Ω	1 V @ 10 mA	-65 to 150°C	SOD-323F	Active
MM3Z68VC	Fairchild Semiconductor	68 V	±5%	200 mW	226 Ω	1 V @ 10 mA	-65 to 150°C	SOD-323F	Active
MM3Z68VB	onsemi	68 V	±2%	200 mW	226 Ω	1 V @ 10 mA	-65 to 150°C	SOD-323F	Active
MM3Z62VC	Fairchild Semiconductor	62 V	±5%	200 mW	202 Ω	1 V @ 10 mA	-65 to 150°C	SOD-323F	Active
MM3Z62VB	Fairchild Semiconductor	62 V	±2%	200 mW	202 Ω	1 V @ 10 mA	-65 to 150°C	SOD-323F	Active
UDZLVTE-1768	Rohm Semiconductor	68 V	-	200 mW	-	-	-65 to 150°C	SOD-323F	Active
UDZLVTE-1762	Rohm Semiconductor	62 V	-	200 mW	-	-	-65 to 150°C	SOD-323F	Active

Engineering Selection Recommendations

Primary Direct Substitute: MM3Z68VC (Fairchild Semiconductor) is the primary direct substitute for BZT52C68S RRG. It matches all critical electrical parameters: 68 V nominal Zener voltage, ±5% tolerance, 200 mW power rating, and SOD-323F package. Both parts are Active product status and ROHS3 compliant.

Alternative Direct Substitute with Enhanced Tolerance: MM3Z68VB (onsemi) provides identical voltage and power specifications with improved tolerance (±2% versus ±5%). This part is suitable for applications requiring tighter voltage regulation accuracy. Both parts are Active product status and ROHS3 compliant.

Voltage Variant Substitutes: MM3Z62VC and MM3Z62VB (Fairchild Semiconductor) operate at 62 V nominal Zener voltage. These parts are suitable only for applications where the lower voltage threshold is functionally acceptable. MM3Z62VB offers ±2% tolerance for improved precision.

Rohm Semiconductor Alternatives: UDZLVTE-1768 (68 V) and UDZLVTE-1762 (62 V) from Rohm Semiconductor are available in SOD-323F packaging. Both are Active product status and ROHS3 compliant. Limited parameter data is provided for these parts.

All substitute parts listed are Active product status, ROHS3 compliant, and operate within the -65°C to 150°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can MM3Z68VC be used as a direct replacement for BZT52C68S RRG? A: Yes. MM3Z68VC matches all critical specifications: 68 V nominal Zener voltage, ±5% tolerance, 200 mW power rating, and SOD-323F package. Both parts are Active product status and ROHS3 compliant.

Q: What is the difference between MM3Z68VC and MM3Z68VB? A: Both parts have identical 68 V nominal Zener voltage and 200 mW power rating in SOD-323F packaging. MM3Z68VB offers tighter tolerance (±2% versus ±5%), providing improved voltage regulation accuracy for precision applications.

Q: Can 62 V Zener diodes (MM3Z62VC, MM3Z62VB, UDZLVTE-1762) replace the 68 V BZT52C68S RRG? A: No, not as direct replacements. The 62 V parts operate at a lower voltage threshold and are suitable only for applications where the lower voltage is functionally acceptable. Voltage selection must match circuit design requirements.

Q: Are all substitute parts available in the same SOD-323F package? A: Yes. All listed substitute parts use SOD-323F surface mount packaging, ensuring mechanical compatibility with the original BZT52C68S RRG footprint.

Q: What is the operating temperature range for substitute parts? A: All substitute parts operate within -65°C to 150°C, matching the BZT52C68S RRG specification.

Q: Are the substitute parts ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of the BZT52C68S RRG.

Q: What packaging formats are available for substitute parts? A: Substitute parts are available in Bulk, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® formats depending on the manufacturer and part number.

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