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onsemi MZP4734ARL
- Part No.:
- MZP4734ARL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
MZP4734ARL.pdf
- Description:
- DIODE ZENER 5.6V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:24,000
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Product details
Overview
MZP4734ARL from onsemi is a 3 W axial-lead Zener diode with nominal zener voltage 5.6 V (±5%), maximum zener impedance 45 Ω at 5 mA test current, and surge rating of 98 W for 1 ms. It operates from −65 °C to +200 °C and is used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation.
For engineers reviewing the MZP4734ARL datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, DO−41 package dimensions, and direct alternatives for voltage reference and clamping designs requiring stable 5.6 V regulation under transient stress.
Technical Context
The MZP4734ARL employs a silicon-oxide passivated junction in a Surmetic 30 construction, enabling high ESD robustness (Class 3, >16 kV HBM) and reliable operation across industrial temperature extremes. Its 3 W steady-state dissipation at TL = 75 °C and 98 W non-repetitive surge capability support use in pulse-clamped regulator stages and transient-suppressed bias networks.
Zener voltage is guaranteed at 90 seconds with lead temperature held at 30 °C ±1 °C (3/8″ from body), and zener impedance is derived per JEDEC-compliant AC superposition method (10% rms AC current on DC IZT). Leakage current is specified as ≤10 μA at VR = 2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V nominal (min 5.32 V, max 5.88 V at IZT = 5 mA); defines stable regulation point for feedback or clamp circuits |
| Zener Impedance (ZZT) | 45 Ω max at IZT = 5 mA; determines output voltage deviation under load current variation |
| Power Dissipation (PD) | 3 W at TL = 75 °C; requires thermal management via lead length ≥3/8″ or heatsinking for continuous operation |
| Surge Rating | 98 W for 1 ms (non-repetitive); enables single-event transient suppression without device failure |
| ESD Rating | Class 3 (>16 kV) per Human Body Model; supports handling and assembly in standard manufacturing environments |
| Operating Temperature | −65 °C to +200 °C; suitable for under-hood automotive, industrial control, and high-temp power converter applications |
Pinout & Package
Package: DO−41 (Case 59−10), axial-leaded plastic, void-free thermosetting material; cathode indicated by polarity band. Lead temperature limit: 230 °C for 10 s at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in reverse-biased Zener configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated voltage node or input rail; polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term voltage regulation and low leakage (<10 μA @ 2 V) across temperature and life |
| Surmetic 30 construction | Delivers 98 W surge capability in compact DO−41 outline-exceeding typical 1 W package size |
| ±5% zener voltage tolerance | Reduces need for post-assembly trimming in cost-sensitive voltage reference designs |
| Pb-free compatible packaging | Meets RoHS requirements without performance trade-offs; identical specs apply to standard and Pb-free variants |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for Microcontroller I/O |
|---|---|
Use Scenario: Regulates error amplifier reference in isolated flyback or forward converter feedback loop. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 5.6 V threshold for optocoupler-driven primary-side control. Use Value: Maintains ±5% output regulation accuracy despite line/load transients due to low ZZT (45 Ω) and tight VZ tolerance. | Use Scenario: Protects 5 V-tolerant GPIO pins from ESD or accidental 12 V misconnection. IC Role / Device Role / Timing Role: Clamping diode shunting excess voltage above 5.6 V to ground during fault events. Use Value: Survives 98 W/1 ms surges and >16 kV HBM ESD without degradation, preserving system-level reliability. |
| Industrial Sensor Bias Reference | Programmable Logic Controller (PLC) Input Conditioning |
Use Scenario: Supplies precise bias voltage to analog front-end circuitry in temperature or pressure transducers. IC Role / Device Role / Timing Role: Stable 5.6 V reference source for op-amp excitation or ADC reference divider networks. Use Value: Operates continuously from −40 °C to +85 °C ambient with <0.1%/°C drift, ensuring measurement repeatability. | Use Scenario: Conditions 24 V DC field input signals to safe logic levels for digital input modules. IC Role / Device Role / Timing Role: Zener-based voltage limiter reducing 24 V transients to ≤5.6 V before Schmitt-trigger input stage. Use Value: Handles repetitive 1 ms surges up to 98 W while maintaining regulation integrity over 10+ year PLC service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V nominal VZ, but rated 1 W (not 3 W); ZZT = 7 Ω at 49 mA vs. 45 Ω at 5 mA | Lower power handling limits use in high-current or surge-prone circuits | Select MZP4734ARL where sustained 3 W dissipation or 98 W transient clamping is required |
| BZX55-C5V6 | 5.6 V ±5%, 500 mW rating, ZZT = 40 Ω at 5 mA; smaller DO-35 package | Not suitable for >0.5 W continuous operation or high-energy transients | Choose MZP4734ARL when thermal margin, surge immunity, or industrial temperature range (−65 °C to +200 °C) is critical |
Compared with 1N4734A and BZX55-C5V6, the MZP4734ARL provides triple the power rating, superior surge resilience, and extended temperature capability-making it the preferred choice for ruggedized power regulation and protection in automotive, industrial, and energy infrastructure systems.
Availability
MZP4734ARL is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor biasing, and microcontroller I/O protection requiring stable component supply and long-lifecycle availability.
Supply support for MZP4734ARL 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering high-performance silicon solutions for automotive, industrial, cloud, and IoT applications.
The MZP4734ARL belongs to the MZP47xxA Series of 3 W Zener regulators designed specifically for high-reliability voltage reference and transient clamping in harsh-environment power systems.
FAQ
What is the zener voltage tolerance for MZP4734ARL?
The MZP4734ARL has a standard zener voltage tolerance of ±5% around its nominal 5.6 V rating, meaning the actual measured VZ falls between 5.32 V and 5.88 V when tested at IZT = 5 mA and lead temperature maintained at 30 °C ±1 °C. This tolerance is guaranteed per onsemi's production testing and applies to all units regardless of Pb-free or standard packaging.
How does the MZP4734ARL handle surge conditions?
The MZP4734ARL is rated for 98 W non-repetitive surge power at 1 ms pulse width per JEDEC standards, significantly exceeding its 3 W steady-state rating. This capability is enabled by its Surmetic 30 construction and silicon-oxide passivated junction. Surge testing must follow the rectangular waveform definition in Figure 3 of the datasheet-not thermal derating curves-to avoid overstress.
What is the maximum operating temperature for MZP4734ARL?
The MZP4734ARL has a specified operating and storage temperature range of −65 °C to +200 °C. Junction temperature must be calculated using lead temperature (TL) and transient thermal resistance data from Figure 2. At TL = 75 °C and lead length = 3/8″, the device sustains 3 W continuously; derating begins above that temperature at 24 mW/°C.
Is MZP4734ARL RoHS compliant?
Yes, the MZP4734ARL is available in Pb-free packaging compliant with RoHS Directive 2011/65/EU. onsemi confirms that specifications-including zener voltage, impedance, surge rating, and temperature range-are identical for both standard and Pb-free versions of the MZP4734ARL, with no performance compromise.
What package type does MZP4734ARL use?
The MZP4734ARL uses the DO−41 package (JEDEC Case 59−10), an axial-leaded plastic outline with 4.10–5.20 mm body length and 0.71–0.86 mm lead diameter. Polarity is marked by a cathode band; mounting position is unrestricted, and maximum soldering temperature is 230 °C for 10 seconds at 1/16″ from the case.
MZP4734ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
MZP4734ARL FAQ
1.How can I place an order for MZP4734ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for MZP4734ARL 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 MZP4734ARL reliable?
The price and inventory of MZP4734ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MZP4734ARL is usually 5 days.
3.What payment methods are accepted for MZP4734ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MZP4734ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MZP4734ARL?
MZP4734ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MZP4734ARL 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 MZP4734ARL?
For technical support, including MZP4734ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MZP4734ARL requirements.
6.How does Aetrix verify that MZP4734ARL is sourced from the original manufacturer or authorized distributors?
All MZP4734ARL 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 MZP4734ARL meets industry standards.
7.What is the process for return or replacement of MZP4734ARL?
All MZP4734ARL units undergo pre-shipment inspection (PSI). If there is an issue with MZP4734ARL, 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 MZP4734ARL part is unused and in its original packaging.
Return procedure for MZP4734ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MZP4734ARL Tags
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