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

onsemi BZG03C150

Name: BZG03C150
Brand: onsemi
SKU: BZG03C150
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZG03C150

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: DO-214AC, SMA

Datasheet:: BZG03C150.pdf

Description:: DIODE ZENER 150V 1.5W SMA

Quantity:: RFQ Add To RFQ list

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Inventory:2,975

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Product details

Overview

BZG03C150 from onsemi is a unidirectional Zener transient voltage suppressor diode in SMA package, rated for 150 V breakdown voltage (V_BR = 138–156 V @ I_T = 5 mA), 600 W peak pulse power (t_P = 100 µs), and clamping voltage V_C = 230 V @ I_PP = 130 A - deployed in automotive power line surge protection and industrial DC power supply input stages.

For engineers reviewing the BZG03C150 datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (V_RWM = 110 V), low clamping ratio (V_C/V_RWM ≈ 2.09), sub-1 ns response time, ESD rating >16 kV (HBM), and Pb-free SMA package compatibility with automated SMT assembly.

Technical Context

This device operates as a unidirectional TVS diode, leveraging avalanche breakdown to clamp transient overvoltages above V_RWM = 110 V. Its 600 W peak power rating applies to non-repetitive 100 µs pulses per IEC 61000-4-5 waveform definitions.

Thermal design relies on junction-to-lead resistance R_JL = 20 °C/W and derating to 1.5 W DC at T_L = 75 °C. It exhibits <1.0 ns response time and 300 pF typical junction capacitance at 0 V bias (f = 1 MHz), making it suitable for low-speed power-line transients rather than high-frequency signal lines.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	110 V - maximum continuous reverse operating voltage before clamping initiates
V_BR @ I_T	138–156 V @ 5 mA - guaranteed Zener breakdown range defining regulation threshold
V_C @ I_PP	230 V @ 130 A - clamping voltage during 10/1000 µs surge, limiting downstream stress
P_ZSM	600 W - peak pulse power handling for single 100 µs events, critical for ISO 7637-2 pulse 5a/b
I_R @ V_RWM	1 µA max - leakage current ensuring minimal standby power loss in always-on systems
Response Time	<1.0 ns - enables suppression of fast-rising ESD and lightning-induced transients
ESD Rating	Class 3 (>16 kV) HBM - qualifies for direct human-contact interfaces in automotive infotainment

Pinout & Package

SMA package (Case 403D), surface-mount, low-profile plastic housing with flat handling surface; cathode indicated by molded polarity band; RoHS-compliant, Pb-free, halogen-free/BFR-free.

Pin/Terminal	Circuit Role	Design Meaning
1. Cathode	Anode-side connection point for reverse-biased operation	Connected to protected line (e.g., +12 V rail); absorbs surge current when voltage exceeds V_RWM
2. Anode	Cathode-side reference terminal	Typically tied to ground or low-impedance return path; completes clamping current loop during transient events

Key Features

Feature	Design Value
600 W peak pulse power	Enables robust protection against severe automotive load dump (ISO 7637-2 Pulse 5b) without thermal runaway
110 V working peak reverse voltage	Matches nominal 100 V DC bus systems in commercial vehicle auxiliary power modules
<1 ns response time	Suppresses ESD events (IEC 61000-4-2) before sensitive downstream ICs experience latch-up
Class 3 HBM ESD rating	Eliminates need for additional ESD protection on exposed connectors in medical equipment front-ends
SMA surface-mount package	Supports high-volume reflow assembly with top-slide or bottom-board mounting flexibility

Applications

Automotive Power Line Protection	Industrial DC Power Supply Input
Use Scenario: Suppressing load dump transients (up to 120 V, 400 ms) on 24 V truck battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and ground, clamping surges within 1 ns. Use Value: Limits voltage seen by downstream PMICs to ≤230 V, preventing damage to 36 V-rated input stages.	Use Scenario: Protecting AC/DC converter primary-side rectifier outputs from switching transients. IC Role / Device Role / Timing Role: Standoff voltage limiter across bulk capacitor, triggered only during >110 V overvoltage events. Use Value: Absorbs 600 W peak energy without degradation, maintaining system uptime in factory automation PLCs.
Medical Equipment Power Entry	Business Machine DC Bus Protection
Use Scenario: Safeguarding isolated DC-DC converters in portable ultrasound devices against ESD coupling via power cord. IC Role / Device Role / Timing Role: First-line transient suppressor at mains-derived 48 V input, responding in <1 ns to human-body discharges. Use Value: Withstands >16 kV HBM ESD without parameter shift, preserving calibration integrity over 10-year service life.	Use Scenario: Clamping inductive kickback from solenoid drivers in ATM cash dispensers powered from 24 V DC bus. IC Role / Device Role / Timing Role: Reverse-biased shunt element across relay coil, conducting surge current to ground during turn-off. Use Value: Delivers 130 A peak current capability (I_PP) to prevent arcing and contact welding in high-cycle mechanical actuators.

Automotive Power Line Protection

Industrial DC Power Supply Input

Use Scenario: Suppressing load dump transients (up to 120 V, 400 ms) on 24 V truck battery-fed ECUs.

IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and ground, clamping surges within 1 ns.

Use Value: Limits voltage seen by downstream PMICs to ≤230 V, preventing damage to 36 V-rated input stages.

Use Scenario: Protecting AC/DC converter primary-side rectifier outputs from switching transients.

IC Role / Device Role / Timing Role: Standoff voltage limiter across bulk capacitor, triggered only during >110 V overvoltage events.

Use Value: Absorbs 600 W peak energy without degradation, maintaining system uptime in factory automation PLCs.

Medical Equipment Power Entry

Business Machine DC Bus Protection

Use Scenario: Safeguarding isolated DC-DC converters in portable ultrasound devices against ESD coupling via power cord.

IC Role / Device Role / Timing Role: First-line transient suppressor at mains-derived 48 V input, responding in <1 ns to human-body discharges.

Use Value: Withstands >16 kV HBM ESD without parameter shift, preserving calibration integrity over 10-year service life.

Use Scenario: Clamping inductive kickback from solenoid drivers in ATM cash dispensers powered from 24 V DC bus.

IC Role / Device Role / Timing Role: Reverse-biased shunt element across relay coil, conducting surge current to ground during turn-off.

Use Value: Delivers 130 A peak current capability (I_PP) to prevent arcing and contact welding in high-cycle mechanical actuators.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ150A	Same V_RWM (110 V), lower P_PK = 600 W but SMB package (larger footprint, higher R_TH)	Less suitable for ultra-dense layouts; thermal performance limited by larger case size	Prefer BZG03C150 where board space is constrained and lead-to-PCB thermal path must be optimized
P6SMB150A	Identical electrical specs but DO-214AA (SMB) package; 1.5 W DC rating same, but R_JL = 25 °C/W vs. 20 °C/W	Lower thermal efficiency in high-ambient environments (>75 °C)	Choose BZG03C150 for automotive under-hood designs requiring tighter thermal margins

Compared with SMBJ150A and P6SMB150A, the BZG03C150 delivers identical clamping performance in a smaller SMA footprint with superior junction-to-lead thermal resistance (20 vs. 25 °C/W), enabling higher reliability in thermally constrained 24 V automotive and industrial control modules.

Availability

BZG03C150 is available at Aetrix Electronics and suitable for automotive power line protection, industrial DC power supply input stages, medical equipment power entry, and business machine DC bus protection requiring stable component supply and full traceability.

Supply support for BZG03C150 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

onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The BZG03C150 belongs to onsemi's BZG03C series of high-power Zener TVS diodes, engineered specifically for ruggedized transient suppression in harsh-environment DC power systems where reliability under repetitive surge stress is mandatory.

FAQ

What is the working peak reverse voltage (V_RWM) specification for BZG03C150?

The BZG03C150 has a working peak reverse voltage (V_RWM) of 110 V, meaning it remains non-conductive up to this DC or continuous peak voltage level. This value ensures compatibility with 100 V nominal DC bus systems while providing margin against normal operating fluctuations. Exceeding V_RWM triggers avalanche conduction, initiating clamping action to protect downstream circuitry.

Does BZG03C150 meet automotive surge immunity standards such as ISO 7637-2?

Yes, the BZG03C150 supports compliance with ISO 7637-2 Pulse 5a and 5b due to its 600 W peak pulse power rating and 230 V clamping voltage at 130 A. Its 110 V V_RWM and fast <1 ns response enable effective suppression of load dump transients in 24 V vehicle networks. System-level validation is required, but the BZG03C150 provides the foundational clamping capability needed for conformance.

What is the maximum clamping voltage (V_C) of BZG03C150 under surge conditions?

The BZG03C150 has a maximum clamping voltage (V_C) of 230 V when subjected to a peak pulse current (I_PP) of 130 A, measured using the 10/1000 µs waveform. This V_C value defines the upper voltage limit imposed on protected circuitry during worst-case transients, directly determining the voltage withstand requirement of downstream components like PMICs or microcontrollers in the BZG03C150-protected system.

Is BZG03C150 compatible with lead-free reflow soldering processes?

Yes, the BZG03C150 is Pb-free, halogen-free/BFR-free, and RoHS-compliant. Its SMA package supports standard lead-free reflow profiles, with a maximum soldering temperature of 260 °C for 10 seconds. The device's void-free transfer-molded plastic case and readily solderable leads ensure reliable attachment in automated SMT lines without delamination or wetting issues during BZG03C150 assembly.

How does the thermal resistance (R_JL) of BZG03C150 affect its steady-state power handling?

The BZG03C150 has a junction-to-lead thermal resistance (R_JL) of 20 °C/W, enabling 1.5 W DC power dissipation at T_L = 75 °C. Above 75 °C, power must be linearly derated at 20 mW/°C. This R_JL value reflects efficient heat transfer from die to PCB copper pad, making thermal design more predictable than alternatives with higher R_JL; proper layout is essential to realize the full BZG03C150 thermal performance.

BZG03C150 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 150 V

Tolerance:: ±6%

Power - Max:: 1.5 W

Impedance (Max) (Zzt):: 300 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 110 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:: SMA

BZG03C150 FAQ

1.How can I place an order for BZG03C150 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZG03C150 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 BZG03C150 reliable?

The price and inventory of BZG03C150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG03C150 is usually 5 days.

3.What payment methods are accepted for BZG03C150?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG03C150 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZG03C150?

BZG03C150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZG03C150 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 BZG03C150?

For technical support, including BZG03C150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG03C150 requirements.

6.How does Aetrix verify that BZG03C150 is sourced from the original manufacturer or authorized distributors?

All BZG03C150 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 BZG03C150 meets industry standards.

7.What is the process for return or replacement of BZG03C150?

All BZG03C150 units undergo pre-shipment inspection (PSI). If there is an issue with BZG03C150, 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 BZG03C150 part is unused and in its original packaging.

Return procedure for BZG03C150:

1.Submit a request within 90 days.

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

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