BZD17C75P RTG Equivalent & Substitute Parts

Part Overview

The BZD17C75P RTG is a 75 V, 800 mW Zener diode manufactured by Taiwan Semiconductor Corporation in Surface Mount Sub SMA packaging. This component is classified as Active product status and is RoHS3 compliant. Zener diodes of this specification are used in voltage regulation and protection circuits where precise voltage clamping at 75 V is required. Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements mandate alternative manufacturer qualifications such as automotive-grade components.

Substiute Parts

BZD17C75P RTG

Taiwan Semiconductor CorporationIn Stock: 979BZD17C75P RTG Datasheet

Current PartRFQ

BZD27C75P-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 3156BZD27C75P-E3-08 Datasheet

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BZD27C75P-HE3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 4128BZD27C75P-HE3-08 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZD17C75P RTG is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Zener (Nominal): 75 V
• Power - Maximum: 800 mW
• Impedance (Maximum): 100 Ohms
• Current - Reverse Leakage @ 56 V: 1 µA
• Voltage - Forward (Maximum) @ 200 mA: 1.2 V

Mechanical & Environmental Equivalence Requirements:

• Package / Case: DO-219AB
• Mounting Type: Surface Mount
• Operating Temperature Range: Minimum -55°C to 175°C
• RoHS Status: ROHS3 Compliant

The substitute parts BZD27C75P-E3-08 and BZD27C75P-HE3-08 meet all electrical and mechanical equivalence criteria. Both are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical zener voltage, power dissipation, impedance, and leakage specifications. The BZD27C75P-HE3-08 variant includes automotive-grade qualification (AEC-Q101), which extends application scope to automotive environments.

Parameter Comparison

Engineering Selection Recommendations

BZD27C75P-E3-08 Selection Criteria: This substitute is appropriate for applications requiring standard industrial-grade 75 V Zener diode functionality. All electrical parameters match the BZD17C75P RTG exactly. The operating temperature range extends to -65°C, providing enhanced low-temperature performance compared to the primary part. This part is suitable for general-purpose voltage regulation and protection circuits in non-automotive environments.

BZD27C75P-HE3-08 Selection Criteria: This substitute is appropriate for applications requiring automotive-grade qualification. The AEC-Q101 certification indicates compliance with automotive reliability and quality standards. Electrical and mechanical specifications are identical to BZD27C75P-E3-08. This part is required for automotive circuit designs, safety-critical applications, or systems subject to automotive supply chain requirements.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across industrial and automotive markets. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all variants, indicating no moisture-related handling restrictions.

Frequently Asked Questions (FAQ)

Q: Can BZD27C75P-E3-08 or BZD27C75P-HE3-08 be used as direct replacements for BZD17C75P RTG?

A: Yes. Both substitute parts meet all electrical and mechanical equivalence criteria. The zener voltage (75 V), power dissipation (800 mW), impedance (100 Ohms), and package (DO-219AB) are identical. The operating temperature range of the substitutes extends to -65°C, which is lower than the primary part's -55°C minimum.

Q: What is the difference between BZD27C75P-E3-08 and BZD27C75P-HE3-08?

A: Both parts are electrically and mechanically identical. The primary difference is that BZD27C75P-HE3-08 carries AEC-Q101 automotive-grade qualification, making it suitable for automotive applications. BZD27C75P-E3-08 is standard industrial-grade.

Q: Are there packaging differences between the main part and substitutes?

A: No. All three parts use DO-219AB surface mount packaging. The BZD17C75P RTG is supplied in Sub SMA format, while the Vishay substitutes are supplied in DO-219AB (SMF) format. These designations refer to the same physical package.

Q: Do the substitutes require different PCB layout or soldering procedures?

A: No. All parts use identical DO-219AB surface mount packaging, requiring no changes to PCB layout, footprint, or reflow soldering procedures.

Q: Which substitute should be selected for automotive applications?

A: BZD27C75P-HE3-08 is the appropriate selection for automotive applications due to AEC-Q101 qualification. This certification ensures compliance with automotive reliability and quality standards.

Q: Are there inventory or lead time advantages to using substitutes?

A: Inventory levels vary by supplier and time. BZD27C75P-E3-08 and BZD27C75P-HE3-08 are both Active products with established supply channels through Vishay General Semiconductor - Diodes Division.

Q: Do the substitutes maintain the same tolerance specification?

A: The BZD17C75P RTG specifies ±6% tolerance. The substitute parts do not list tolerance in the provided specifications. Tolerance verification with the manufacturer is necessary for applications requiring specific tolerance bands.