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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Vishay General Semiconductor - Diodes Division BZG03C75TR

Name: BZG03C75TR
Brand: Vishay General Semiconductor - Diodes Division
SKU: BZG03C75TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZG03C75TR

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

Package:: DO-214AC, SMA

Datasheet:: BZG03C75TR.pdf

Description:: DIODE ZENER 75V 1.25W DO214AC

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Inventory:4,454

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Product details

Overview

BZG03C75TR from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode rated for 75 V nominal Zener voltage (V_Z = 70–79 V at I_ZT = 10 mA), 3 W steady-state power dissipation at T_amb = 100 °C with R_thJA < 25 K/W, and 600 W non-repetitive surge capability (t_p = 100 µs). It stabilizes reference voltages in industrial power supplies and overvoltage protection circuits.

For engineers reviewing the BZG03C75TR datasheet, BZG03C75TR pinout, BZG03C75TR application, or BZG03C75TR equivalent, key selection criteria include its DO-214AC package compatibility, ±5% V_Z tolerance, 30 Ω dynamic resistance at 10 mA, temperature coefficient of +0.08%/K, and RoHS-compliant lead-free construction.

Technical Context

The BZG03C75TR operates as a precision voltage reference device using a silicon p-n junction with glass passivation for enhanced reliability and moisture resistance. Its thermal design supports mounting on Al₂O₃ ceramic substrates (R_thJA = 100 K/W) or epoxy-glass PCBs (R_thJA = 125–150 K/W), enabling stable operation up to 150 °C junction temperature.

It delivers regulated output under reverse-bias conditions with low leakage (I_R ≤ 1 µA at V_R = 56 V) and controlled forward conduction (V_F = 1.2 V at I_F = 0.5 A), supporting bidirectional transient suppression and clamping functions in DC power rails.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener voltage V_Z	70–79 V at 10 mA test current - defines stable regulation window for 75 V nominal systems
Power dissipation P_diss	3 W at T_amb = 100 °C with R_thJA < 25 K/W - sets maximum continuous thermal load on PCB
Dynamic resistance r_zj	30 Ω typical at I_ZT = 10 mA - determines output impedance and regulation sensitivity to current changes
Temperature coefficient TKV_Z	+0.08%/K typical - quantifies V_Z drift per degree Celsius for high-stability designs
Surge power P_ZSM	600 W for 100 µs pulse - enables transient overvoltage absorption without failure
Reverse leakage I_R	≤ 1 µA at V_R = 56 V - ensures minimal standby current in voltage-sensing paths
Junction temperature T_j	150 °C maximum - constrains thermal derating and heatsink requirements

Pinout & Package

Package: DO-214AC (SMA), surface-mount, 2-terminal configuration with cathode band marking. Approximate weight: 77 mg.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / Reverse bias cathode reference	Connected to lower-potential node in clamping or regulation circuit
Cathode	Reverse breakdown terminal / Zener reference output	Provides stabilized voltage relative to anode; marked with band on package

Key Features

Feature	Design Value
Glass passivated junction	Enables high humidity resistance and long-term parameter stability in industrial environments
Wave and reflow solderable	Supports automated SMT assembly without special process modifications
Lead (Pb)-free and RoHS compliant	Fulfills EU Directive 2002/95/EC and WEEE 2002/96/EC for eco-conscious manufacturing
Fits 5 mm SMD footpads	Ensures mechanical compatibility with standard SMA land patterns on PCBs

Applications

Industrial Power Supply Regulation	Automotive ECU Voltage Reference
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converters for PLC modules and motor drives. IC Role / Device Role / Timing Role: Zener reference element providing precise 75 V threshold for error amplifier input. Use Value: Maintains ±5% output regulation across temperature (-65 to +150 °C) with 30 Ω dynamic impedance.	Use Scenario: Clamping battery-supplied microcontroller supply rail during load-dump transients. IC Role / Device Role / Timing Role: Overvoltage protection diode shunting excess energy to ground above 79 V. Use Value: Absorbs 600 W surge pulses without degradation, meeting ISO 7637-2 Pulse 5a requirements.
Telecom Line Card Protection	Renewable Energy Inverter Monitoring
Use Scenario: Protecting analog front-end inputs from induced surges on 48 V telecom distribution lines. IC Role / Device Role / Timing Role: Bidirectional transient suppressor limiting voltage swing between anode and cathode. Use Value: Delivers 1.2 V forward drop at 0.5 A and sub-µA leakage at 56 V, minimizing signal path interference.	Use Scenario: Providing stable reference for DC-link voltage sensing in solar inverters operating at 600–1000 V bus levels. IC Role / Device Role / Timing Role: Secondary Zener reference cascaded with high-voltage divider for scaling accuracy. Use Value: Enables 0.08%/K temperature tracking to reduce calibration drift over wide ambient ranges.

Industrial Power Supply Regulation

Automotive ECU Voltage Reference

Use Scenario: Stabilizing feedback voltage in isolated DC-DC converters for PLC modules and motor drives.

IC Role / Device Role / Timing Role: Zener reference element providing precise 75 V threshold for error amplifier input.

Use Value: Maintains ±5% output regulation across temperature (-65 to +150 °C) with 30 Ω dynamic impedance.

Use Scenario: Clamping battery-supplied microcontroller supply rail during load-dump transients.

IC Role / Device Role / Timing Role: Overvoltage protection diode shunting excess energy to ground above 79 V.

Use Value: Absorbs 600 W surge pulses without degradation, meeting ISO 7637-2 Pulse 5a requirements.

Telecom Line Card Protection

Renewable Energy Inverter Monitoring

Use Scenario: Protecting analog front-end inputs from induced surges on 48 V telecom distribution lines.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor limiting voltage swing between anode and cathode.

Use Value: Delivers 1.2 V forward drop at 0.5 A and sub-µA leakage at 56 V, minimizing signal path interference.

Use Scenario: Providing stable reference for DC-link voltage sensing in solar inverters operating at 600–1000 V bus levels.

IC Role / Device Role / Timing Role: Secondary Zener reference cascaded with high-voltage divider for scaling accuracy.

Use Value: Enables 0.08%/K temperature tracking to reduce calibration drift over wide ambient ranges.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ75A	TVS diode with 75 V standoff voltage, 600 W peak pulse power, but higher clamping voltage (121 V) and no precise Zener regulation	Designed for transient suppression only-not suitable for precision voltage reference use	Select when surge immunity dominates over regulation accuracy
1N5365B	Through-hole 75 V Zener, 5 W power rating, TO-204AA package, higher thermal resistance (R_thJA ≈ 250 K/W)	Requires through-hole assembly and larger board area; less suitable for high-density SMT layouts	Select when higher continuous power and legacy through-hole compatibility are required

Compared with SMBJ75A and 1N5365B, the BZG03C75TR uniquely combines SMT-compatible DO-214AC packaging, tight 70–79 V Zener tolerance, and 30 Ω dynamic resistance-making it optimal for space-constrained, precision-regulated 75 V reference designs where thermal performance and long-term stability are critical.

Availability

BZG03C75TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom line cards, and renewable energy inverters requiring stable component supply and full traceability.

Supply support for BZG03C75TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.

The BZG03C-Series targets high-stability, surface-mount Zener regulation in harsh environments-designed for applications demanding glass passivation, RoHS compliance, and robust surge handling without sacrificing voltage accuracy.

FAQ

What is the Zener voltage tolerance of BZG03C75TR?

The BZG03C75TR has a specified Zener voltage range of 70 V to 79 V at 10 mA test current, corresponding to a ±5% tolerance around the nominal 75 V rating. This tolerance is confirmed in the Electrical Characteristics table of Vishay Document Number 85593 Rev. 1.7 and applies under standard test conditions (T_amb = 25 °C).

Can BZG03C75TR be used in reflow soldering processes?

Yes, the BZG03C75TR is explicitly rated for both wave and reflow soldering per its datasheet. Its DO-214AC package and glass-passivated junction withstand standard Pb-free reflow profiles (e.g., JEDEC J-STD-020), making it compatible with automated SMT assembly lines without special thermal profiling.

What is the maximum junction temperature for BZG03C75TR?

The absolute maximum junction temperature for BZG03C75TR is 150 °C, as stated in the Absolute Maximum Ratings section of Vishay's Document Number 85593. Operation beyond this limit risks permanent parametric shift or catastrophic failure, and thermal design must ensure T_j remains within specification under worst-case power dissipation.

How does the temperature coefficient affect BZG03C75TR's performance?

The BZG03C75TR exhibits a typical temperature coefficient of +0.08%/K, meaning its Zener voltage increases by approximately 0.06 V per 10 °C rise in junction temperature. This positive drift is critical for predicting regulation accuracy across operating temperature ranges and must be factored into reference-circuit error budgets.

Is BZG03C75TR compliant with RoHS and lead-free requirements?

Yes, BZG03C75TR is certified lead (Pb)-free and compliant with RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC, as documented in Vishay's official datasheet (Rev. 1.7, 15-Sep-05). The component contains no restricted substances above allowable thresholds and supports environmentally responsible manufacturing.

BZG03C75TR Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: BZG03C

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 75 V

Tolerance:: -

Power - Max:: 1.25 W

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 56 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 500 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

BZG03C75TR FAQ

1.How can I place an order for BZG03C75TR through Aetrix?

Please submit a Request for Quotation (RFQ) for BZG03C75TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZG03C75TR reliable?

The price and inventory of BZG03C75TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG03C75TR is usually 5 days.

3.What payment methods are accepted for BZG03C75TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG03C75TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZG03C75TR?

BZG03C75TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZG03C75TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZG03C75TR?

For technical support, including BZG03C75TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG03C75TR requirements.

6.How does Aetrix verify that BZG03C75TR is sourced from the original manufacturer or authorized distributors?

All BZG03C75TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZG03C75TR meets industry standards.

7.What is the process for return or replacement of BZG03C75TR?

All BZG03C75TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG03C75TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZG03C75TR part is unused and in its original packaging.

Return procedure for BZG03C75TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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