My Inquiry
My Account
onsemi MZP4741ARL
- Part No.:
- MZP4741ARL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
MZP4741ARL.pdf
- Description:
- DIODE ZENER 11V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MZP4741ARL from onsemi is a 3 W axial-lead Zener diode with nominal zener voltage 11 V (±5%), maximum zener impedance 23 Ω at 8 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 and overvoltage protection in DC power supplies and reference circuits.
For engineers reviewing the MZP4741ARL 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 design, ESD-hardened clamping, and industrial power rail stabilization.
Technical Context
The MZP4741ARL uses a silicon-oxide passivated junction in a Surmetic 30 construction, enabling stable reverse breakdown with low leakage (≤5 μA at 8.4 V) and high ESD tolerance (>16 kV HBM). Its 3 W steady-state dissipation at TL = 75°C supports robust operation under sustained load conditions.
Thermal management relies on lead-to-ambient conduction (primary path through cathode lead), with transient thermal resistance θJL dependent on pulse width and duty cycle. Derating begins above 75°C at 24 mW/°C for 3/8″ lead length, per JEDEC-compliant power temperature curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45–11.55 V @ IZT = 8 mA; ensures ±5% tolerance for stable reference generation |
| Zener Impedance (ZZT) | 23 Ω max @ IZT = 8 mA; maintains tight regulation under varying load current |
| Reverse Leakage (IR) | ≤5 μA @ VR = 8.4 V; minimizes standby power loss in high-impedance bias networks |
| Surge Power | 98 W @ 1 ms pulse; withstands transient overvoltage events without degradation |
| ESD Rating | Class 3 (>16 kV) per HBM; provides intrinsic electrostatic discharge immunity during handling and assembly |
| Operating Temp Range | −65°C to +200°C; suitable for under-hood automotive, industrial control, and aerospace environments |
| Package | DO−41 (Case 59), axial-leaded plastic; compatible with standard through-hole PCB assembly and automated tape-and-reel feeding (6000/reel) |
Pinout & Package
Package: DO−41 (Case 59), axial-leaded plastic housing with cathode indicated by polarity band. Lead length standardized for thermal derating at 3/8″ from case; maximum soldering temperature 230°C for 10 seconds 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 shunt regulator configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input rail; carries regulated output voltage when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term VZ drift and low noise performance in precision references |
| Surmetic 30 construction | Delivers superior surge endurance and environmental reliability vs. conventional 1 W packages |
| Pb-free compliant packaging | Meets RoHS requirements without compromising thermal or electrical performance |
| Void-free transfer-molded case | Prevents moisture ingress and mechanical stress cracking in humid or thermally cycled environments |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 12 V rail in programmable logic controller (PLC) power modules where input varies between 9–15 V. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 11 V bias for op-amp comparators and ADC reference buffers. Use Value: Maintains <±1% output accuracy across −40°C to +85°C ambient due to low tempco and tight VZ tolerance. | Use Scenario: Generating stable reference for engine control unit (ECU) sensor signal conditioning circuits exposed to under-hood temperatures up to +125°C. IC Role / Device Role / Timing Role: Zener clamp protecting microcontroller analog inputs from load-dump transients. Use Value: Withstands 98 W surge pulses and >16 kV ESD without parameter shift, ensuring functional safety compliance. |
| Test Equipment Voltage Calibration | Telecom Line Card Overvoltage Protection |
Use Scenario: Precision voltage source in benchtop multimeter calibration fixtures requiring traceable 11 V reference. IC Role / Device Role / Timing Role: Primary reference element in feedback loop of adjustable linear regulator. Use Value: Low 23 Ω ZZT and ≤5 μA leakage ensure minimal loading error and high open-circuit stability. | Use Scenario: Protecting Ethernet PHY interface ICs from induced surges on copper line interfaces in outdoor base stations. IC Role / Device Role / Timing Role: Standby clamping diode placed across supply rails to limit transient excursions. Use Value: Fast response and 200°C max junction temperature allow reliable operation in unventilated enclosures with ambient up to +70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4741A | Same nominal VZ (11 V), but rated at 1 W; higher ZZT (20 Ω min vs. 23 Ω max), lower surge rating (40 W) | Limited to low-power biasing; unsuitable for sustained 3 W dissipation or high-energy transients | Select MZP4741ARL when thermal margin, surge resilience, or long-term stability under load is required. |
| BZX85C11 | 1.3 W rating, TO-226AA package; VZ tolerance ±5%, but ZZT = 25 Ω typical at 5 mA - not tested at 8 mA | Lower power handling and less consistent impedance spec; no Class 3 ESD rating specified | Choose MZP4741ARL for designs needing guaranteed 3 W capability, HBM >16 kV, and DO−41 footprint compatibility. |
Compared with 1N4741A and BZX85C11, the MZP4741ARL delivers higher power headroom, tighter impedance control at rated test current, and documented ESD/surge robustness - critical for industrial and automotive systems where reliability under stress is non-negotiable.
Availability
MZP4741ARL is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, test equipment calibration, and telecom line card protection requiring stable component supply and full traceability.
Supply support for MZP4741ARL 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 technologies for automotive, industrial, cloud, and intelligent edge applications.
The MZP4741ARL belongs to the MZP47xxA Series of 3 W Zener regulators designed specifically for high-reliability voltage reference and transient suppression in harsh-environment electronics.
FAQ
What is the exact zener voltage tolerance for MZP4741ARL?
The MZP4741ARL has a nominal zener voltage of 11 V with a guaranteed tolerance of ±5%, corresponding to a range of 10.45 V to 11.55 V when measured at IZT = 8 mA and lead temperature TL = 30°C ±1°C. This tolerance is standard across the MZP47xxA series and applies to both standard and Pb-free versions of the MZP4741ARL.
Does MZP4741ARL support automated assembly?
Yes, the MZP4741ARL is supplied in tape-and-reel format (6000 units per reel) and features a DO−41 axial-leaded package compatible with standard pick-and-place and wave-soldering equipment. Its void-free plastic case and corrosion-resistant leads ensure reliable feed performance and solder joint integrity during high-volume manufacturing of the MZP4741ARL.
How does the thermal derating of MZP4741ARL work above 75°C?
The MZP4741ARL is rated for 3 W steady-state power dissipation at TL = 75°C with 3/8″ lead length. Above that temperature, it derates linearly at 24 mW/°C. For example, at TL = 100°C, maximum allowable PD drops to 2.4 W. This derating curve is defined in Figure 1 of the official MZP4729A/D datasheet and applies directly to the MZP4741ARL.
Is MZP4741ARL RoHS compliant?
Yes, the MZP4741ARL is available in Pb-free packaging and complies with RoHS Directive 2011/65/EU. onsemi confirms that specifications apply identically to both standard and Pb-free variants of the MZP4741ARL, and Pb-free orderable part numbers are published on www.onsemi.com.
What is the maximum reverse leakage current for MZP4741ARL?
The MZP4741ARL has a maximum reverse leakage current (IR) of 5 μA when tested at VR = 8.4 V (0.76 × VZ nominal) and TA = 25°C. This value is specified in the Electrical Characteristics table of the MZP4729A/D datasheet and is guaranteed for every unit of the MZP4741ARL.
MZP4741ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 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
MZP4741ARL FAQ
1.How can I place an order for MZP4741ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for MZP4741ARL 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 MZP4741ARL reliable?
The price and inventory of MZP4741ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MZP4741ARL is usually 5 days.
3.What payment methods are accepted for MZP4741ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MZP4741ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MZP4741ARL?
MZP4741ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MZP4741ARL 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 MZP4741ARL?
For technical support, including MZP4741ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MZP4741ARL requirements.
6.How does Aetrix verify that MZP4741ARL is sourced from the original manufacturer or authorized distributors?
All MZP4741ARL 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 MZP4741ARL meets industry standards.
7.What is the process for return or replacement of MZP4741ARL?
All MZP4741ARL units undergo pre-shipment inspection (PSI). If there is an issue with MZP4741ARL, 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 MZP4741ARL part is unused and in its original packaging.
Return procedure for MZP4741ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MZP4741ARL Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
