BZD27C43P MTG Equivalent & Substitute Parts

Part Overview

The BZD27C43P MTG is a Zener diode rated at 43 V nominal voltage with 1 W maximum power dissipation, designed for surface mount applications in the Sub SMA package configuration. This component is classified as Active product status and is fully RoHS3 compliant. The need to identify equivalent and substitute parts arises from inventory availability, packaging format requirements, manufacturing transitions, or design optimization considerations where alternative configurations of the same functional specification are acceptable.

Substiute Parts

BZD27C43P MTG

Taiwan Semiconductor CorporationIn Stock: 1062BZD27C43P MTG Datasheet

Current PartRFQ

BZD27C43P

Taiwan Semiconductor CorporationIn Stock: 6378BZD27C43P Datasheet

Parametric EquivalentRFQ

BZD27C43P-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 20167BZD27C43P-E3-08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZD27C43P MTG is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Zener voltage: 43 V nominal
• Maximum power dissipation: 1 W or greater
• Package type: DO-219AB (Sub SMA / SMF)
• Mounting configuration: Surface Mount
• Impedance (Max): 45 Ohms
• Reverse leakage current: 1 µA @ 33 V
• Forward voltage: 1.2 V @ 200 mA

Secondary Compatibility Factors:

• Operating temperature range: -55°C to 175°C minimum
• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications with different packaging formats or manufacturing codes) and Similar Manufacturer Parts (functionally equivalent with minor specification variations that remain within acceptable operating parameters).

Parameter Comparison

Engineering Selection Recommendations

BZD27C43P (Taiwan Semiconductor Corporation): This part is a parametric equivalent with identical electrical specifications to the main part. However, it carries a "Not For New Designs" product status designation. Selection of this substitute is appropriate only for replacement, repair, or continuation of existing production runs where design lock-in has been established. The tighter tolerance specification (±5% versus ±6.97%) provides improved voltage accuracy. Tape & Reel packaging format indicates suitability for automated assembly processes.

BZD27C43P-E3-08 (Vishay General Semiconductor - Diodes Division): This part is functionally equivalent with active product status, making it suitable for new design implementations. The primary distinction is reduced maximum power dissipation (800 mW versus 1 W). This substitute is applicable in applications where the thermal load does not exceed 800 mW continuous dissipation. The extended operating temperature range (-65°C minimum versus -55°C) provides enhanced low-temperature performance. All critical electrical parameters including zener voltage, impedance, reverse leakage, and forward voltage remain equivalent. RoHS3 compliance and MSL 1 rating ensure compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can BZD27C43P be used as a direct replacement for BZD27C43P MTG?

A: Yes, BZD27C43P is electrically equivalent with identical zener voltage (43 V), impedance (45 Ohms), and forward voltage characteristics. The primary difference is packaging format (Tape & Reel versus bulk) and product status (Not For New Designs). For existing production continuity, this substitution is valid.

Q: What is the significance of the "Not For New Designs" status on BZD27C43P?

A: This designation indicates the manufacturer has transitioned this part to end-of-life status and recommends alternative parts for new circuit designs. Existing inventory remains available for replacement and repair applications. New designs should incorporate BZD27C43P-E3-08 or equivalent active-status alternatives.

Q: Is BZD27C43P-E3-08 suitable for applications requiring 1 W power dissipation?

A: BZD27C43P-E3-08 is rated for 800 mW maximum power dissipation, which is 200 mW below the 1 W specification of the main part. This substitute is appropriate only for applications where continuous power dissipation does not exceed 800 mW. Applications requiring full 1 W capability must use the main part or equivalent 1 W-rated alternatives.

Q: Are all substitute parts compatible with the DO-219AB package footprint?

A: Yes. All listed substitutes utilize the DO-219AB (Sub SMA / SMF) package configuration, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating, matching the main part specifications. REACH status is Unaffected for all variants.

Q: Does tolerance variation affect substitution suitability?

A: BZD27C43P offers ±5% tolerance compared to ±6.97% for the main part, representing improved voltage accuracy. BZD27C43P-E3-08 does not specify tolerance. For applications with strict voltage regulation requirements, the tighter tolerance of BZD27C43P may provide performance advantages.

Q: What is the temperature range difference between substitutes?

A: BZD27C43P-E3-08 operates from -65°C to 175°C, extending the minimum temperature specification by 10°C compared to the main part (-55°C to 175°C). This enhanced low-temperature performance is beneficial for applications in extreme cold environments.