My Inquiry
My Account
Vishay General Semiconductor - Diodes Division MMSZ5239C-E3-08
- Part No.:
- MMSZ5239C-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5239C-E3-08.pdf
- Description:
- DIODE ZENER 9.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:15,052
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5239C-E3-08 from Vishay Semiconductors is a silicon planar Zener diode with a nominal Zener voltage of 9.1 V, ±2 % tolerance, 7 Ω dynamic resistance at 20 mA test current, and 500 mW maximum power dissipation on FR-4 board - used for precision voltage regulation and reference in low-power analog circuits, sensor biasing, and overvoltage protection.
For engineers reviewing the MMSZ5239C-E3-08 datasheet, MMSZ5239C-E3-08 pinout, MMSZ5239C-E3-08 application, or MMSZ5239C-E3-08 equivalent, this part delivers tight voltage tolerance, low dynamic impedance, and AEC-Q101-qualified variants for automotive-grade designs requiring stable 9.1 V references under thermal stress and ESD exposure.
Technical Context
This device operates as a single-element, cathode-marked Zener diode in reverse-biased breakdown mode, with thermal equilibrium-based VZ specification and a temperature coefficient of +0.060 %/°C - indicating positive drift with rising junction temperature. Its SOD-123 package supports surface-mount assembly with JEDEC-compliant soldering profiles up to 260 °C peak.
Designed for low-current regulation (IZT = 20 mA), it exhibits 3 μA reverse leakage at 7 V and maintains 10 Ω dynamic resistance at IZT2, enabling stable reference performance in battery-powered and space-constrained applications where thermal resistance junction-to-ambient (420 K/W) and junction-to-lead (250 K/W) are critical layout considerations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 9.1 V ±2 % at 20 mA - enables precise 9.1 V reference generation with minimal calibration overhead |
| Dynamic resistance ZZ | 7 Ω at IZT = 20 mA - ensures low output impedance for stable regulation under load variation |
| Power dissipation Ptot | 300 mW on FR-4 board - defines maximum continuous power handling in standard PCB layouts |
| Reverse leakage IR | 3 μA at VR = 7 V - guarantees low quiescent current in standby or low-power sensing nodes |
| Temperature coefficient αVZ | +0.060 %/°C - quantifies predictable positive VZ drift for thermal compensation design |
| Junction temperature Tj | 150 °C maximum - sets upper thermal limit for reliability in enclosed or high-ambient environments |
| ESD rating (HBM) | >8 kV - provides robustness against handling and system-level electrostatic discharge events |
Pinout & Package
SOD-123 surface-mount package: 2.7 mm × 3.7 mm body, 0.55 mm cathode bar width, 1.55 mm lead pitch, 0.12 mm thickness, UL 94 V-0 molding compound, MSL level 1 - optimized for automated pick-and-place and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-bias regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Provides regulated 9.1 V output relative to anode; marked by cathode bar on package top |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in precision reference circuits |
| Low 7 Ω dynamic resistance | Minimizes output voltage deviation across 1–20 mA load current range |
| AEC-Q101 qualified variants available | Supports automotive subsystems requiring validated reliability and qualification traceability |
| ESD robustness >8 kV HBM | Eliminates need for external ESD protection in front-end sensor or interface stages |
| SOD-123 footprint compatibility | Enables drop-in replacement with industry-standard 2-pin SMT diode land patterns |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Control Module |
|---|---|
Use Scenario: Providing stable 9.1 V bias to analog front-end op-amps and ADC reference inputs in temperature/humidity sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for signal chain accuracy. Use Value: ±2 % VZ tolerance and +0.060 %/°C TC enable <10 mV total error over -40 to +125 °C operating range. | Use Scenario: Regulating supply to microcontroller I/O buffers and CAN transceiver bias rails in HVAC control units. IC Role / Device Role / Timing Role: Low-power voltage clamp and rail stabilization element. Use Value: 300 mW power rating and AEC-Q101-qualified variants ensure compliance with automotive thermal and reliability requirements. |
| Portable Medical Pulse Oximeter | IoT Edge Node Power Management |
Use Scenario: Generating clean 9.1 V reference for LED driver current control and photodiode amplifier biasing. IC Role / Device Role / Timing Role: Stable voltage reference for analog subsystem calibration. Use Value: 3 μA reverse leakage at 7 V preserves battery life in always-on monitoring modes. | Use Scenario: Clamping LDO feedback node or protecting MCU reset pin against transient overvoltage in battery-backed systems. IC Role / Device Role / Timing Role: Overvoltage protection and reference stabilization component. Use Value: 7 Ω ZZ and 420 K/W RthJA allow fast response to voltage spikes without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C9V1 | Same 9.1 V ±2 %, but SOD-323 package (smaller footprint, higher RthJA = 500 K/W) | Preferred for ultra-dense layouts; less thermal margin at full power | Select BZX584C9V1 only if board space is constrained and power dissipation remains ≤150 mW |
| MMSZ5239B-E3-08 | Identical package and electrical specs except ±5 % VZ tolerance | Suitable for non-critical biasing where cost sensitivity outweighs precision needs | Choose MMSZ5239B-E3-08 when ±5 % tolerance is acceptable and BOM cost reduction is prioritized |
Compared with BZX584C9V1 and MMSZ5239B-E3-08, the MMSZ5239C-E3-08 uniquely balances ±2 % precision, SOD-123 thermal performance (300 mW @ 420 K/W), and broad automotive qualification availability - making it optimal for mid-volume industrial and automotive designs demanding verified accuracy and reliability.
Availability
MMSZ5239C-E3-08 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive cabin electronics, portable medical devices, and IoT edge node power management requiring stable component supply and consistent Zener voltage performance.
Supply support for MMSZ5239C-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 Semiconductors is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, miniaturization, and automotive-grade qualification.
The MMSZ52xx series belongs to Vishay's small-signal Zener diode product line, engineered for precision voltage reference and regulation in space-constrained, thermally demanding applications across automotive, industrial, and portable electronics.
FAQ
What is the Zener voltage and tolerance of the MMSZ5239C-E3-08?
The MMSZ5239C-E3-08 has a nominal Zener voltage of 9.1 V with a tight ±2 % tolerance, specified at 20 mA test current under thermal equilibrium conditions. This tolerance is confirmed in Vishay's official datasheet revision 1.1 (July 2023) and enables high-accuracy voltage referencing without post-manufacturing calibration for the MMSZ5239C-E3-08.
What package type does the MMSZ5239C-E3-08 use, and what are its key mechanical dimensions?
The MMSZ5239C-E3-08 uses the SOD-123 surface-mount package: 2.7 mm ±0.15 mm length, 3.7 mm ±0.15 mm width, 0.12 mm ±0.03 mm thickness, with 1.55 mm ±0.15 mm lead pitch and cathode bar marking. These dimensions are standardized per Vishay's package drawing S8-V-3910.01-003 and ensure compatibility with automated assembly processes for the MMSZ5239C-E3-08.
Does the MMSZ5239C-E3-08 meet automotive qualification standards?
The base MMSZ5239C-E3-08 is RoHS-compliant and commercial-grade; however, the AEC-Q101-qualified variant is MMSZ5239C-HE3_A-08. That version shares identical electrical specs but adds automotive reliability validation including ESD >8 kV HBM, temperature cycling, and humidity testing - confirming suitability for automotive applications when using the HE3_A suffix for the MMSZ5239C-E3-08 family.
What is the maximum power dissipation of the MMSZ5239C-E3-08 on a standard FR-4 PCB?
The MMSZ5239C-E3-08 has a maximum power dissipation of 300 mW when mounted on an FR-4 board with Vishay's recommended soldering footprint, as defined in the Absolute Maximum Ratings table. This value assumes convection cooling and accounts for thermal resistance junction-to-ambient of 420 K/W - a critical derating factor for sustained operation of the MMSZ5239C-E3-08 in real-world layouts.
How does the temperature coefficient affect the MMSZ5239C-E3-08's performance across operating temperature?
The MMSZ5239C-E3-08 has a temperature coefficient of +0.060 %/°C, meaning its Zener voltage increases by approximately 5.5 mV per °C rise above 25 °C. This predictable positive drift allows designers to compensate for thermal effects in precision references - a documented characteristic in the Electrical Characteristics table that directly impacts long-term stability of the MMSZ5239C-E3-08 in varying ambient conditions.
MMSZ5239C-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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5239C-E3-08 FAQ
1.How can I place an order for MMSZ5239C-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5239C-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 MMSZ5239C-E3-08 reliable?
The price and inventory of MMSZ5239C-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 MMSZ5239C-E3-08 is usually 5 days.
3.What payment methods are accepted for MMSZ5239C-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5239C-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5239C-E3-08?
MMSZ5239C-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5239C-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 MMSZ5239C-E3-08?
For technical support, including MMSZ5239C-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5239C-E3-08 requirements.
6.How does Aetrix verify that MMSZ5239C-E3-08 is sourced from the original manufacturer or authorized distributors?
All MMSZ5239C-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 MMSZ5239C-E3-08 meets industry standards.
7.What is the process for return or replacement of MMSZ5239C-E3-08?
All MMSZ5239C-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5239C-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 MMSZ5239C-E3-08 part is unused and in its original packaging.
Return procedure for MMSZ5239C-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5239C-E3-08 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
