My Inquiry
My Account
onsemi SZMM5Z4688T1G
- Part No.:
- SZMM5Z4688T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z4688T1G.pdf
- Description:
- DIODE ZENER 4.7V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:4,152
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZMM5Z4688T1G from onsemi is a 4.7 V ±5% Zener voltage regulator diode in SOD−523 package, rated for 500 mW power dissipation at 75°C, with 50 μA test current (IZT), 10 μA leakage current at 3 V reverse bias, and AEC−Q101 qualification for automotive use. It provides precise low-voltage regulation in space-constrained power rail protection circuits.
For engineers reviewing the SZMM5Z4688T1G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, thermal derating behavior, HBM ESD rating (>16 kV), and automotive-grade qualification status.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining stable output voltage across variable load currents by conducting excess current to ground when input exceeds VZ. Its 4.7 V nominal Zener voltage falls within the low-TC region of the MM5Z4xxx series, minimizing drift over −55°C to +150°C.
The SOD−523 package enables high-density PCB placement with cathode-indicated polarity band and supports automated reflow assembly per JEDEC J-STD-020. Thermal resistance is 250°C/W junction-to-ambient, requiring layout-aware thermal management above 75°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.47–4.94 V @ IZT = 50 μA - defines regulated output range under standard test conditions |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - maximum continuous power before thermal derating begins |
| Leakage Current (IR) | 10 μA @ VR = 3 V - ensures minimal standby current draw in undervoltage hold-off applications |
| ESD Rating | HBM Class 3 (>16 kV) - protects against electrostatic discharge during handling and board assembly |
| Operating Temperature | −55°C to +150°C - supports automotive under-hood and industrial control environments |
| AEC−Q101 Qualified | Yes - meets stress testing requirements for automotive electronic components |
Pinout & Package
Package: SOD−523 (1.20 × 0.80 × 0.60 mm), void-free thermosetting plastic case, cathode indicated by polarity band, UL 94 V−0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; current flows into this terminal during Zener conduction |
| 2 (Non-banded End) | Anode | Connected to circuit ground or return path; completes shunt regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD−523 package | Enables placement on 0.5 mm pitch PCBs and ultra-thin portable electronics without height clearance issues |
| 500 mW FR−5 board rating | Supports robust voltage clamping in compact DC/DC feedback paths without external heatsinking |
| AEC−Q101 qualification | Validates reliability for automotive infotainment, body control modules, and ADAS sensor interfaces |
| 16 kV HBM ESD rating | Reduces need for external ESD protection in handheld and wearable device front-end circuits |
| Pb−Free and RoHS compliant | Meets global environmental compliance mandates without sacrificing Zener performance or thermal stability |
Applications
| Automotive Body Control Module | USB-C Power Delivery Monitor |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring 5 V supply rails in door module ECUs. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 4.7 V benchmark independent of battery voltage fluctuations. Use Value: Maintains <±1% measurement accuracy across −40°C to +125°C ambient while occupying <0.96 mm² PCB area. |
Use Scenario: Clamping overvoltage on CC line during USB-C negotiation to protect Type-C controller ICs. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting CC line to ≤4.94 V during fault transients. Use Value: Prevents controller latch-up with 10 μA leakage at 3 V, ensuring no false detection during idle state. |
| Industrial Sensor Signal Conditioning | Medical Wearable Battery Monitor |
Use Scenario: Providing stable bias for op-amp-based bridge sensor amplifiers in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Low-drift Zener reference stabilizing gain-setting resistors against temperature-induced drift. Use Value: Delivers <±0.5% VZ stability over −55°C to +150°C, improving long-term calibration retention. |
Use Scenario: Monitoring lithium-ion cell voltage via resistive divider with precision reference in hearable devices. IC Role / Device Role / Timing Role: Low-leakage shunt reference enabling accurate 3.0–4.2 V battery state-of-charge estimation. Use Value: 10 μA IR at 3 V minimizes divider current error, extending battery runtime by >8 hours per charge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C4V7 | Same 4.7 V nominal, but SOD-323 package (1.7 × 1.3 mm); 300 mW rating; no AEC-Q101 qualification | Lacks automotive qualification; higher thermal resistance (350°C/W) limits high-temp operation | Select only for non-automotive consumer designs where board space allows larger footprint |
| MMSZ4700T1G | 4.7 V nominal, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; AEC-Q101 qualified; 100 nA IR @ 3 V | Lower leakage improves precision reference accuracy but requires 2.3× more PCB area | Prefer when ultra-low leakage dominates over size constraints, e.g., medical sensor references |
Compared with BZX584-C4V7 and MMSZ4700T1G, SZMM5Z4688T1G uniquely balances automotive qualification, ultra-small SOD−523 footprint, and 10 μA leakage-making it optimal for space-limited AEC−Q101 systems where moderate leakage is acceptable.
Availability
SZMM5Z4688T1G is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery monitors, and industrial sensor signal conditioning requiring stable component supply with full traceability and lifecycle support.
Supply support for SZMM5Z4688T1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMM5Z4688T1G belongs to the MM5Z4xxx/SZMM5Z4xxx series of miniature Zener regulators designed specifically for space-constrained, high-reliability voltage reference and overvoltage protection in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of SZMM5Z4688T1G?
The SZMM5Z4688T1G has a Zener voltage range of 4.47 V to 4.94 V at IZT = 50 μA, corresponding to a ±5% tolerance around the nominal 4.7 V value. This tolerance is guaranteed across the full operating temperature range of −55°C to +150°C and is verified per AEC−Q101 test conditions. The SZMM5Z4688T1G datasheet specifies these limits in the Electrical Characteristics table on page 3.
Is SZMM5Z4688T1G suitable for automotive applications?
Yes, SZMM5Z4688T1G is AEC−Q101 qualified and PPAP capable, with the "SZ" prefix indicating compliance for automotive and other high-reliability applications. It undergoes stress testing including temperature cycling, humidity bias, and high-temperature operating life per AEC−Q101 Rev D. The SZMM5Z4688T1G is used in automotive body control modules and infotainment power rails.
What is the maximum power dissipation for SZMM5Z4688T1G on an FR-5 board?
SZMM5Z4688T1G is rated for 500 mW total power dissipation on FR−5 board at lead temperature (TL) of 75°C. Above 75°C, it derates linearly at 4.0 mW/°C. This rating assumes minimum recommended footprint per onsemi's SOD−523 layout guidelines. The SZMM5Z4688T1G thermal resistance is 250°C/W junction-to-ambient.
Does SZMM5Z4688T1G have ESD protection?
Yes, SZMM5Z4688T1G has an ESD rating of Class 3 (>16 kV) per Human Body Model (HBM), as confirmed in the Features section of the official onsemi datasheet. This level of ESD robustness eliminates the need for additional discrete ESD protection in many portable and automotive interface applications. The SZMM5Z4688T1G achieves this through optimized die design and packaging.
What is the leakage current specification for SZMM5Z4688T1G?
SZMM5Z4688T1G exhibits a maximum reverse leakage current (IR) of 10 μA at VR = 3 V and TA = 25°C, as specified in the Electrical Characteristics table. This low leakage supports accurate voltage reference performance in high-impedance divider networks and extends battery life in always-on monitoring circuits. The SZMM5Z4688T1G maintains this IR spec across its full storage temperature range.
SZMM5Z4688T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z4688T1G FAQ
1.How can I place an order for SZMM5Z4688T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z4688T1G 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 SZMM5Z4688T1G reliable?
The price and inventory of SZMM5Z4688T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z4688T1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z4688T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z4688T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z4688T1G?
SZMM5Z4688T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z4688T1G 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 SZMM5Z4688T1G?
For technical support, including SZMM5Z4688T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z4688T1G requirements.
6.How does Aetrix verify that SZMM5Z4688T1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z4688T1G 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 SZMM5Z4688T1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z4688T1G?
All SZMM5Z4688T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z4688T1G, 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 SZMM5Z4688T1G part is unused and in its original packaging.
Return procedure for SZMM5Z4688T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM5Z4688T1G 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…
