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Vishay General Semiconductor - Diodes Division MMSZ4711-E3-08
- Part No.:
- MMSZ4711-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4711-E3-08.pdf
- Description:
- DIODE ZENER 27V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,732
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Product details
Overview
MMSZ4711-E3-08 from Vishay Semiconductors is a silicon planar Zener diode with a nominal Zener voltage of 27 V, ±5 % tolerance, rated for 500 mW power dissipation on heatsink and 300 mW on FR-4 board, operating across -55 °C to +150 °C, used for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the MMSZ4711-E3-08 datasheet, MMSZ4711-E3-08 pinout, MMSZ4711-E3-08 application, or MMSZ4711-E3-08 equivalent, this device serves as a stable, AEC-Q101–qualified (via HE3_A variant) voltage reference with 0.01 μA reverse leakage at 20.4 V and thermal resistance junction-to-ambient of 420 K/W on standard PCB layout.
Technical Context
This Zener diode operates in reverse breakdown mode with test current IZT = 0.05 mA under thermal equilibrium conditions, delivering tightly controlled regulation within its 25.7 V to 28.4 V range. Its SOD-123 package enables surface-mount integration into space-constrained analog monitoring and feedback paths.
The device exhibits ESD robustness per AEC-Q101: >8 kV HBM and >800 V MM, and supports reflow soldering up to 260 °C peak temperature. Junction temperature is limited to 150 °C, with storage and operating ranges spanning -65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.7 V min. / 27 V nom. / 28.4 V max. - defines precise clamping threshold for 24 V system rail protection and reference generation |
| Test Current (IZT) | 0.05 mA - specifies low-current bias point where VZ is guaranteed; enables ultra-low-power sensing applications |
| Reverse Leakage (IR) | 0.01 μA max. at 20.4 V - ensures minimal parasitic current draw in high-impedance bias networks |
| Power Dissipation (Ptot) | 300 mW on FR-4 board - sets maximum continuous power handling without heatsink or forced cooling |
| Thermal Resistance (RthJA) | 420 K/W - determines temperature rise above ambient per watt; critical for thermal design on standard PCB footprint |
| Operating Temperature | -55 °C to +150 °C - supports deployment in automotive engine control units and industrial sensor front-ends |
| ESD Rating | >8 kV HBM, >800 V MM - provides robustness against handling and board-level electrostatic discharge events |
Pinout & Package
SOD-123 surface-mount package: 2.7 mm × 1.55 mm body, 0.85 mm height, cathode marked by bar on top surface; RoHS-compliant molding compound (UL 94 V-0), MSL level 1, compatible with JEDEC J-STD-020 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 27 V reference when reverse-biased; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar construction | Ensures repeatable Zener voltage distribution and long-term stability under thermal cycling |
| ±5 % VZ tolerance | Reduces need for post-production trimming in voltage reference designs; supports binning-free BOMs |
| AEC-Q101 qualification path | Enables direct use in automotive subsystems (e.g., body control modules) when specified as HE3_A variant |
| Low IR at 20.4 V | Minimizes loading error in high-resistance divider networks used for ADC input scaling |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking; simplifies manufacturing logistics |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 24 V supply rail for microcontroller I/O protection and analog sensor biasing in door module electronics. IC Role / Device Role / Timing Role: Zener clamp protecting MCU GPIOs and providing stable reference for local ADC measurements. Use Value: Prevents damage from load-dump transients while maintaining <1 % reference drift over -40 °C to +125 °C operating range. |
Use Scenario: Generating precision 27 V reference for 4–20 mA transmitter loop-powered sensors in factory automation. IC Role / Device Role / Timing Role: Voltage reference source for DAC output scaling and current-loop compliance voltage setting. Use Value: Enables 12-bit effective resolution with <0.5 % total error budget across full industrial temperature range. |
| Medical Portable Diagnostic Device | Telecom Power Management Module |
Use Scenario: Providing isolated 27 V bias for photodiode amplifier stages in handheld pulse oximeters. IC Role / Device Role / Timing Role: Low-noise voltage reference for transimpedance amplifier feedback network. Use Value: Delivers <2 nA leakage-induced offset shift, preserving sub-μA photocurrent measurement fidelity. |
Use Scenario: Clamping secondary-side DC bus in PoE-powered Ethernet switches during surge events. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing transient energy before regulator ICs. Use Value: Limits bus voltage to ≤28.4 V during 10/1000 μs surges, preventing downstream DC-DC converter latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | Zener voltage 25.65–28.35 V (±5 %), 300 mW Ptot, SOT-23 package, RthJA = 350 K/W | Smaller footprint but higher thermal resistance; less suitable for sustained 27 V regulation at >100 °C ambient | Select when board area is constrained and power dissipation remains below 150 mW |
| MMBZ5256BLT1G | Zener voltage 26.6–29.4 V (±5 %), 225 mW Ptot, SOT-23, IR = 0.1 μA at 22.8 V | Higher leakage and lower power rating limit use in precision low-current references | Prefer for cost-sensitive consumer applications where 27 V tolerance and thermal margin are secondary |
Compared with BZX84-C27LT1G and MMBZ5256BLT1G, the MMSZ4711-E3-08 offers superior thermal performance (420 K/W vs. 350/450 K/W) and tighter leakage control (0.01 μA vs. 0.1 μA), making it optimal for high-reliability 24 V system regulation where long-term stability and elevated ambient operation are required.
Availability
MMSZ4711-E3-08 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, medical diagnostic equipment, and telecom power management requiring stable component supply and consistent Zener voltage performance.
Supply support for MMSZ4711-E3-08 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with emphasis on reliability, precision, and automotive-grade qualification.
The MMSZ4711-E3-08 belongs to Vishay's MMSZ4681–MMSZ4717 family of small-signal Zener diodes engineered for stable voltage reference and overvoltage protection in space-limited, thermally demanding environments.
FAQ
What is the Zener voltage tolerance of the MMSZ4711-E3-08?
The MMSZ4711-E3-08 has a nominal Zener voltage of 27 V with a tolerance of ±5 %, meaning its actual breakdown voltage falls between 25.7 V and 28.4 V at the specified test current of 0.05 mA. This tolerance is measured under thermal equilibrium conditions and applies to all units shipped under this part number.
Is the MMSZ4711-E3-08 qualified for automotive applications?
The MMSZ4711-E3-08 itself is the commercial-grade RoHS-compliant version. For automotive use, Vishay offers the MMSZ4711-HE3_A-08 variant, which is AEC-Q101 qualified. The MMSZ4711-E3-08 shares identical electrical and mechanical specifications but lacks the extended stress testing required for automotive qualification.
What is the maximum reverse leakage current for the MMSZ4711-E3-08?
The MMSZ4711-E3-08 exhibits a maximum reverse leakage current of 0.01 μA at 20.4 V (76 % of nominal VZ). This ultra-low leakage supports high-impedance bias networks and precision reference applications where parasitic current must remain below 10 nA.
Can the MMSZ4711-E3-08 be used in reflow soldering processes?
Yes, the MMSZ4711-E3-08 uses an SOD-123 package rated for lead-free reflow soldering with a peak temperature of up to 260 °C, compliant with JEDEC J-STD-020. Its MSL Level 1 classification allows indefinite dry pack storage without baking prior to assembly.
How does the thermal resistance of the MMSZ4711-E3-08 affect its power handling?
With a junction-to-ambient thermal resistance (RthJA) of 420 K/W on FR-4 board, the MMSZ4711-E3-08 reaches its 150 °C maximum junction temperature at just 300 mW dissipation under typical ambient conditions. Derating is required above 75 °C ambient to maintain safe operation-e.g., ≤180 mW at 100 °C ambient.
MMSZ4711-E3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 nA @ 20.4 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ4711-E3-08 FAQ
1.How can I place an order for MMSZ4711-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4711-E3-08 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 MMSZ4711-E3-08 reliable?
The price and inventory of MMSZ4711-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4711-E3-08 is usually 5 days.
3.What payment methods are accepted for MMSZ4711-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4711-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4711-E3-08?
MMSZ4711-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4711-E3-08 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 MMSZ4711-E3-08?
For technical support, including MMSZ4711-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4711-E3-08 requirements.
6.How does Aetrix verify that MMSZ4711-E3-08 is sourced from the original manufacturer or authorized distributors?
All MMSZ4711-E3-08 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 MMSZ4711-E3-08 meets industry standards.
7.What is the process for return or replacement of MMSZ4711-E3-08?
All MMSZ4711-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4711-E3-08, 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 MMSZ4711-E3-08 part is unused and in its original packaging.
Return procedure for MMSZ4711-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ4711-E3-08 Tags
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