BZT52C75 Equivalent & Substitute Parts

Part Overview

The BZT52C75 is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the SOD-123F package. This component operates at a nominal Zener voltage of 75 V with a maximum power dissipation of 500 mW, suitable for voltage regulation and protection circuits. The part is ROHS3 compliant and REACH unaffected, making it suitable for current industrial and commercial applications. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	75	V
Tolerance	±5	%
Power - Max	500	mW
Impedance (Max)	255	Ohms
Current - Reverse Leakage @ Vr	45	nA @ 52.5 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	SOD-123F	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BZT52C75 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nom): 75 V (exact match required)
Tolerance: ±5% (exact match required)
Power - Max: 500 mW (exact match or higher acceptable)
Impedance (Max): 255 Ohms (exact match or lower acceptable)
Operating Temperature Range: -65°C to 150°C (exact match or wider acceptable)
Mounting Type: Surface Mount (exact match required)
Package / Case: SOD-123F (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Parts are classified as Parametric Equivalent when all critical parameters match exactly. Parts are classified as Similar when one or more non-critical parameters deviate while maintaining functional compatibility within the specified electrical and thermal operating envelope.

Parameter Comparison

Parameter	BZT52C75	BZT52C75 RHG	BZT52C75-G RHG	BZT52-C75_R1_00001
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Panjit International Inc.
Voltage - Zener (Nom)	75 V	75 V	75 V	75 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	410 mW
Impedance (Max)	255 Ohms	255 Ohms	255 Ohms	250 Ohms
Current - Reverse Leakage @ Vr	45 nA @ 52.5 V	45 nA @ 52.5 V	45 nA @ 52.5 V	100 nA @ 56 V
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	1 V @ 10 mA	1 V @ 10 mA	Not specified
Operating Temperature Range	-65 to 150°C	-65 to 150°C	-65 to 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123F	SOD-123F	SOD-123F	SOD-123
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

BZT52C75 RHG (Taiwan Semiconductor Corporation)

This part is a parametric equivalent to the BZT52C75. All electrical parameters, thermal operating range, package specification, and compliance certifications are identical. The primary distinction is packaging format (Tape & Reel). This substitute is suitable for direct replacement in all applications where the BZT52C75 is specified. Inventory availability is higher (6416 Pcs) compared to the main part.

BZT52C75-G RHG (Taiwan Semiconductor Corporation)

This part is a parametric equivalent to the BZT52C75. All critical electrical parameters, thermal operating range, and compliance certifications are identical. The packaging format differs (Cut Tape & Digi-Reel® versus Tape & Reel), and the description references SOD-123 in the short description field, though the supplier device package is specified as SOD-123F. This substitute is suitable for direct replacement in applications where the BZT52C75 is specified, with consideration for packaging format compatibility in automated assembly processes.

BZT52-C75_R1_00001 (Panjit International Inc.)

This part is classified as a similar substitute. The Zener voltage (75 V), tolerance (±5%), and mounting type (Surface Mount) are identical to the BZT52C75. However, the following parameters deviate:

Power - Max: 410 mW (versus 500 mW for BZT52C75)
Operating Temperature Range: -55°C to 150°C (versus -65°C to 150°C for BZT52C75)
Package / Case: SOD-123 (versus SOD-123F for BZT52C75)
Current - Reverse Leakage: 100 nA @ 56 V (versus 45 nA @ 52.5 V for BZT52C75)

This substitute is suitable for applications where the lower power rating (410 mW) and narrower temperature range (-55°C minimum) are acceptable. The SOD-123 package is mechanically and electrically compatible with SOD-123F in most circuit designs, though PCB footprint verification is required. This part is recommended only when the reduced power dissipation capability and temperature range do not conflict with circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can BZT52C75 RHG be used as a direct replacement for BZT52C75?

A: Yes. BZT52C75 RHG is a parametric equivalent with identical electrical specifications, thermal operating range, package type (SOD-123F), and compliance certifications. The only difference is the packaging format (Tape & Reel). Direct substitution is supported in all applications.

Q: What is the difference between BZT52C75-G RHG and BZT52C75?

A: BZT52C75-G RHG is a parametric equivalent with identical electrical parameters, thermal range, and compliance status. The packaging format differs (Cut Tape & Digi-Reel® versus Tape & Reel). Both use the SOD-123F package. Direct substitution is supported, with consideration for assembly process compatibility.

Q: Can BZT52-C75_R1_00001 replace BZT52C75 in all applications?

A: BZT52-C75_R1_00001 is a similar substitute with matching Zener voltage and tolerance, but with reduced power rating (410 mW versus 500 mW), narrower operating temperature range (-55°C to 150°C versus -65°C to 150°C), and a different package variant (SOD-123 versus SOD-123F). Substitution is conditional on circuit requirements. Applications requiring the full 500 mW power dissipation or -65°C minimum temperature operation must not use this part.

Q: What is the significance of the SOD-123 versus SOD-123F package difference?

A: SOD-123F and SOD-123 are distinct package variants with different physical dimensions and electrical characteristics. While mechanically similar, they have different PCB footprints. Verification of footprint compatibility is required before substituting BZT52-C75_R1_00001 (SOD-123) for BZT52C75 (SOD-123F).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (BZT52C75 RHG, BZT52C75-G RHG, and BZT52-C75_R1_00001) are ROHS3 compliant and REACH unaffected, matching the compliance status of the BZT52C75.

Q: What is the difference in reverse leakage current between BZT52C75 and BZT52-C75_R1_00001?

A: BZT52C75 specifies 45 nA @ 52.5 V, while BZT52-C75_R1_00001 specifies 100 nA @ 56 V. The higher leakage current in the Panjit part may affect circuit performance in applications with strict leakage requirements. Verification against circuit specifications is required.

Q: Which substitute part has the highest inventory availability?

A: BZT52C75 RHG has the highest inventory availability at 6416 Pcs, compared to 3808 Pcs for BZT52C75-G RHG and 1286 Pcs for BZT52-C75_R1_00001.

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