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onsemi MZP4735ARLG
- Part No.:
- MZP4735ARLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
MZP4735ARLG.pdf
- Description:
- DIODE ZENER 6.2V 1W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,555
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Product details
Overview
MZP4735ARLG from onsemi is a 3 W, 6.2 V ±5% axial-lead Zener diode in DO-41 (Case 59) package, rated for 98 W non-repetitive surge at 1 ms, with 41 Ω max Zener impedance at 2 mA test current and <10 μA leakage at 5 V reverse bias. It serves as a precision voltage reference and overvoltage clamp in power supply feedback loops and regulator circuits.
For engineers reviewing the MZP4735ARLG datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, surge rating, thermal derating above 75 °C, lead temperature limit (260 °C), and Pb-free compliance per JEDEC standards.
Technical Context
This device operates as a silicon-oxide passivated junction Zener regulator with guaranteed limits on six electrical parameters. Its 3 W steady-state dissipation at TL = 75 °C and 1 W at TA = 50 °C reflects strict thermal management requirements tied to lead length (3/8″ standard).
The MZP4735ARLG delivers stable regulation under transient conditions via 98 W surge capability and Class 3 ESD immunity (>16 kV HBM), while its 41 Ω dynamic impedance at IZT = 2 mA ensures low output variation across load changes in feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.89–6.51 V @ IZT = 2 mA; ±5% tolerance enables tight feedback loop setpoints in 5 V–6 V regulator designs. |
| Zener Impedance (ZZT) | 41 Ω max @ IZT = 2 mA; low dynamic resistance minimizes output voltage shift during load transients. |
| Surge Rating | 98 W @ 1 ms pulse; supports robust protection against short-duration line surges without degradation. |
| Power Dissipation | 3 W @ TL = 75 °C (lead temp); requires mechanical mounting with controlled lead length for thermal reliability. |
| Leakage Current | <10 μA @ VR = 5 V; ensures minimal quiescent current draw in high-impedance bias networks. |
| ESD Rating | Class 3 (>16 kV) per HBM; eliminates need for external ESD protection in board-level handling and assembly. |
| Operating Temp | −65 °C to +200 °C; suitable for under-hood automotive and industrial environments with wide ambient swings. |
Pinout & Package
DO-41 (Case 59) axial-lead plastic package with cathode indicated by band; void-free thermosetting plastic body, corrosion-resistant finish, and solderable leads rated for 260 °C at 1/16″ from case for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to regulated node; reverse-biased operation establishes fixed reference voltage relative to anode. |
| Anode | Reference ground/reference return | Tied to circuit common or feedback divider low-side; completes current path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free construction | Complies with RoHS and JEDEC J-STD-020 reflow profiles without lead contamination risk. |
| Silicon-oxide passivated junction | Enables stable long-term Zener voltage drift <0.1%/1000 h and reduced parameter spread across production lots. |
| Surmetic 30 packaging | Provides environmental sealing against moisture, dust, and chemical exposure in harsh industrial enclosures. |
| 6-parameter guaranteed testing | Ensures conformance to VZ, ZZT, IZK, ZZK, IR, and VF specs - critical for safety-critical voltage references. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Used in optocoupler-based feedback network of isolated DC-DC converters to regulate output voltage within ±1%. IC Role / Device Role / Timing Role: Zener reference sets precise threshold for TL431-like shunt regulator action, enabling closed-loop control of primary-side PWM duty cycle. Use Value: 6.2 V nominal Zener voltage matches common TL431 reference design points; ±5% tolerance and 41 Ω impedance ensure stable loop gain and fast transient response. | Use Scenario: Placed across motor driver outputs to absorb inductive kickback spikes exceeding 12 V rail. IC Role / Device Role / Timing Role: Acts as passive crowbar element that clamps transient energy into safe dissipation range before MOSFET breakdown. Use Value: 98 W surge rating handles 1 ms inductive spikes without failure; 200 °C max junction temperature allows operation near heat-generating power stages. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller Input Protection |
Use Scenario: Provides stable 6.2 V reference for analog front-end amplifiers measuring 4–20 mA loop signals in factory automation systems. IC Role / Device Role / Timing Role: Supplies excitation voltage to precision current-sense resistors and buffers reference for ADC input scaling. Use Value: Low 10 μA leakage prevents loading of high-impedance sensor paths; −65 °C to +200 °C rating supports operation inside sealed IP67-rated enclosures. | Use Scenario: Mounted at PLC digital input terminals to suppress EFT bursts and lightning-induced surges on 24 V DC field wiring. IC Role / Device Role / Timing Role: First-line transient voltage suppression device absorbing >16 kV HBM events before reaching input protection ICs. Use Value: Class 3 ESD rating eliminates need for secondary TVS arrays; axial DO-41 form factor simplifies through-hole PCB layout and automated insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Same 6.2 V nominal Zener voltage, but rated for 1 W only and lacks Class 3 ESD rating. | Not suitable for surge-prone industrial inputs or high-power feedback networks requiring >1 W dissipation. | Select MZP4735ARLG when 3 W continuous power, 98 W surge, or >16 kV ESD immunity is required. |
| BZX85C6V2 | 6.2 V Zener, 1.3 W rating, TO-226AA package; higher thermal resistance than DO-41 with 3/8″ leads. | Limited to low-power analog references where PCB space constraints favor radial leaded packages. | Choose MZP4735ARLG for axial-mount compatibility, higher surge margin, and tighter VZ tolerance control. |
Compared with 1N4735A and BZX85C6V2, the MZP4735ARLG provides triple the steady-state power rating, verified 98 W surge capability, and guaranteed Class 3 ESD performance - making it the preferred choice for mission-critical voltage references in automotive and industrial power systems.
Availability
MZP4735ARLG is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, and programmable logic controller input protection requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for MZP4735ARLG 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MZP4735ARLG belongs to the Surmetic 30 Zener regulator family, engineered for high-reliability voltage reference and transient suppression in demanding power conversion and protection circuits.
FAQ
What is the Zener voltage tolerance for MZP4735ARLG?
The MZP4735ARLG has a nominal Zener voltage of 6.2 V with a guaranteed tolerance of ±5%, meaning the actual measured VZ falls between 5.89 V and 6.51 V at IZT = 2 mA and TL = 30 °C. This tolerance is fully tested and guaranteed per datasheet specifications, ensuring predictable performance in feedback and reference applications.
Can MZP4735ARLG replace a 1N4735A in existing designs?
The MZP4735ARLG shares the same 6.2 V nominal Zener voltage and DO-41 package as the 1N4735A, but offers higher 3 W power rating, 98 W surge capability, and Class 3 ESD rating. While physically compatible, MZP4735ARLG should be validated for thermal layout due to its higher power handling - especially lead length and heatsinking per Figure 1 in the datasheet.
What is the maximum allowable lead temperature during soldering for MZP4735ARLG?
The MZP4735ARLG is rated for a maximum lead temperature of 260 °C at a distance of 1/16″ from the case for up to 10 seconds during soldering. This specification ensures reliable joint formation without damaging the internal silicon-oxide passivated junction or degrading Zener voltage stability.
Does MZP4735ARLG meet RoHS and Pb-free requirements?
Yes, the "RLG" suffix in MZP4735ARLG explicitly denotes a Pb-free, RoHS-compliant device manufactured using onsemi's qualified lead-free process. The package meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements and is compatible with standard reflow and wave soldering profiles.
How does the Zener impedance of MZP4735ARLG affect regulation accuracy?
The MZP4735ARLG has a maximum Zener impedance (ZZT) of 41 Ω at IZT = 2 mA. This low dynamic resistance means output voltage varies less than 82 mV for a 2 mA change in current - directly improving regulation accuracy in feedback networks where load or source variations occur.
MZP4735ARLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 3 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
MZP4735ARLG FAQ
1.How can I place an order for MZP4735ARLG through Aetrix?
Please submit a Request for Quotation (RFQ) for MZP4735ARLG 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 MZP4735ARLG reliable?
The price and inventory of MZP4735ARLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MZP4735ARLG is usually 5 days.
3.What payment methods are accepted for MZP4735ARLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MZP4735ARLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MZP4735ARLG?
MZP4735ARLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MZP4735ARLG 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 MZP4735ARLG?
For technical support, including MZP4735ARLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MZP4735ARLG requirements.
6.How does Aetrix verify that MZP4735ARLG is sourced from the original manufacturer or authorized distributors?
All MZP4735ARLG 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 MZP4735ARLG meets industry standards.
7.What is the process for return or replacement of MZP4735ARLG?
All MZP4735ARLG units undergo pre-shipment inspection (PSI). If there is an issue with MZP4735ARLG, 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 MZP4735ARLG part is unused and in its original packaging.
Return procedure for MZP4735ARLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MZP4735ARLG Tags
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