My Inquiry
My Account
Taiwan Semiconductor Corporation MMSZ4690 RHG
- Part No.:
- MMSZ4690 RHG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4690 RHG.pdf
- Description:
- DIODE ZENER 5.6V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ4690 RHG from Taiwan Semiconductor is a 500mW surface-mount Zener diode with a nominal zener voltage of 5.6V, ±5% tolerance (5.32V–5.88V), tested at 50mA, and designed for precision voltage regulation and overvoltage protection in space-constrained PCBs.
For engineers reviewing the MMSZ4690 RHG datasheet, MMSZ4690 RHG pinout, MMSZ4690 RHG application, or MMSZ4690 RHG equivalent, key selection criteria include its SOD-123 package, 10μA leakage at 4.0V reverse bias, 340°C/W junction-to-ambient thermal resistance, and suitability for low-power analog reference and ESD-clamp auxiliary circuits.
Technical Context
The MMSZ4690 RHG operates as a two-terminal silicon junction device providing stable reverse-breakdown voltage regulation. Its zener voltage is specified at IZT = 50mA with dynamic impedance <15Ω (typical), and it maintains regulation across -55°C to +150°C junction temperature range.
Designed for surface-mount assembly on standard FR-4 boards, the device uses matte tin-plated leads compliant with J-STD-002 solderability and meets UL 94V-0 flammability rating. Polarity is marked by a cathode band on the SOD-123 molded body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.32V min / 5.6V nom / 5.88V max @ IZT = 50mA - defines tight regulation window for 5V rail clamping or reference |
| Power Dissipation (PD) | 500mW - limits continuous current to ~89mA at 5.6V, constraining use in high-current shunt regulators |
| Leakage Current (IR) | 10μA max @ VR = 4.0V - ensures minimal standby power loss in battery-backed circuits |
| Junction Temperature (TJ) | -55°C to +150°C - supports operation in automotive under-hood and industrial control environments |
| Thermal Resistance (RθJA) | 340°C/W - requires careful copper pad design (5cm × 5cm) to avoid thermal runaway at full power |
| Package | SOD-123 - 2.85mm × 1.80mm footprint enables high-density layout in portable electronics |
Pinout & Package
SOD-123 package: 2-terminal surface-mount device with cathode indicated by a visible band; no internal leads - anode and cathode connect directly to PCB pads.
| 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 regulated node or protected input; polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Constant voltage regulation | Stable 5.6V reference within ±5% across 10–100mA operating range, enabling accurate analog sensing |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement before reflow - simplifies SMT line handling |
| RoHS and halogen-free compliance | Meets IPC-1752A material declaration requirements for green electronics manufacturing |
| UL 94V-0 molding compound | Self-extinguishing plastic housing prevents flame propagation in safety-critical assemblies |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Shunt protection element placed between VBUS and GND, conducting only above 5.6V threshold. Use Value: Limits voltage excursion to ≤5.88V, preventing damage to downstream USB PHY ICs rated for 5.5V absolute maximum. | Use Scenario: Generating a clean, temperature-stable reset signal for ARM Cortex-M microcontrollers during power-up. IC Role / Device Role / Timing Role: Zener-based voltage reference feeding RC delay network into reset supervisor IC. Use Value: Provides 5.6V reference with <15Ω dynamic impedance, ensuring consistent reset timing across -40°C to +85°C ambient. |
| Low-Power Sensor Reference | Industrial IO Module Clamp |
Use Scenario: Supplying excitation voltage to 3.3V analog sensors (e.g., pressure transducers) in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing sensor supply rail independent of battery voltage decay. Use Value: Maintains regulation down to 5.32V minimum, supporting operation until Li-ion cell drops to ~3.0V per cell. | Use Scenario: Protecting 24V DC input terminals of PLC digital input modules against field-wiring transients. IC Role / Device Role / Timing Role: Secondary clamp staged after TVS diode, absorbing residual energy below 6V. Use Value: Absorbs up to 500mW for short durations without degradation, extending system MTBF in factory automation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C5V6 | Same 5.6V nominal, but 300mW PD, higher leakage (50μA @ 4V) | Limited to lower-power bias networks; unsuitable for sustained 50mA regulation | Select when board space allows larger SOD-323 and thermal budget is constrained |
| MMBZ5232BS | 5.6V nominal, 200mW PD, SOT-23 package, 10μA leakage @ 4V | Lower power handling restricts use to signal-level clamping, not power rail regulation | Prefer for high-volume consumer designs where SOT-23 pick-and-place compatibility is prioritized |
Compared with BZX584-C5V6 and MMBZ5232BS, the MMSZ4690 RHG delivers higher power capability (500mW) and tighter voltage tolerance (±5%) in the compact SOD-123 form factor, making it optimal for industrial-grade shunt regulation where thermal margin and long-term stability are critical.
Availability
MMSZ4690 RHG is available at Aetrix Electronics and suitable for USB protection circuits, microcontroller reset networks, low-power sensor references, and industrial IO module clamps requiring stable component supply and RoHS-compliant sourcing.
Supply support for MMSZ4690 RHG 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, and protection components for industrial and automotive markets.
The MMSZ4690 RHG belongs to TSC's MMSZ4678–MMSZ4716 family of 500mW Zener diodes, engineered specifically for high-reliability voltage regulation and transient suppression in space-limited, thermally demanding applications.
FAQ
What is the zener voltage tolerance of the MMSZ4690 RHG?
The MMSZ4690 RHG has a zener voltage tolerance of ±5%, with a specified range of 5.32V (minimum) to 5.88V (maximum) at test current IZT = 50mA. This tolerance is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet Version A2311. The nominal value is 5.6V, and the device maintains this regulation window across its full operating temperature range.
What package type does the MMSZ4690 RHG use?
The MMSZ4690 RHG uses the SOD-123 surface-mount package, measuring 2.85mm × 1.80mm with a 0.90mm height. Its mechanical outline conforms to JEDEC DO-215, Variation AD, and features matte tin-plated leads solderable per J-STD-002. The cathode is marked by a visible band on the molded body, and the package is rated UL 94V-0 for flammability.
What is the maximum leakage current for the MMSZ4690 RHG?
The maximum leakage current for the MMSZ4690 RHG is 10μA at a reverse voltage (VR) of 4.0V, as specified in the Electrical Specifications table. This low leakage ensures minimal quiescent current draw in battery-powered applications and supports reliable operation in high-impedance reference circuits where signal integrity is critical.
Can the MMSZ4690 RHG be used in automotive under-hood applications?
Yes, the MMSZ4690 RHG supports junction temperatures from -55°C to +150°C and is constructed with UL 94V-0 molding compound, making it suitable for non-safety-critical automotive under-hood applications such as sensor biasing and ECU power rail clamping. However, Taiwan Semiconductor explicitly states these devices are not designed for medical, life-saving, or life-sustaining systems.
What is the thermal resistance of the MMSZ4690 RHG?
The junction-to-ambient thermal resistance (RθJA) of the MMSZ4690 RHG is 340°C/W when mounted on a 5cm × 5cm copper pad test board. This value assumes standard JEDEC conditions and must be derated for smaller PCB copper areas. Exceeding the 500mW power limit without adequate thermal relief risks irreversible junction failure.
MMSZ4690 RHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ4690 RHG FAQ
1.How can I place an order for MMSZ4690 RHG through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4690 RHG 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 MMSZ4690 RHG reliable?
The price and inventory of MMSZ4690 RHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4690 RHG is usually 5 days.
3.What payment methods are accepted for MMSZ4690 RHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4690 RHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4690 RHG?
MMSZ4690 RHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4690 RHG 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 MMSZ4690 RHG?
For technical support, including MMSZ4690 RHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4690 RHG requirements.
6.How does Aetrix verify that MMSZ4690 RHG is sourced from the original manufacturer or authorized distributors?
All MMSZ4690 RHG 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 MMSZ4690 RHG meets industry standards.
7.What is the process for return or replacement of MMSZ4690 RHG?
All MMSZ4690 RHG units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4690 RHG, 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 MMSZ4690 RHG part is unused and in its original packaging.
Return procedure for MMSZ4690 RHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ4690 RHG 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…
