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Taiwan Semiconductor Corporation MMSZ4695 RHG
- Part No.:
- MMSZ4695 RHG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4695 RHG.pdf
- Description:
- DIODE ZENER 8.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
MMSZ4695 RHG from Taiwan Semiconductor is a surface-mount Zener diode designed for precision voltage regulation and overvoltage protection in low-power circuits, with a nominal zener voltage of 8.7 V, 500 mW power dissipation, ±5% voltage tolerance, 50 mA test current, and 6.6 µA leakage current at 6.6 V reverse bias.
For engineers reviewing the MMSZ4695 RHG datasheet, MMSZ4695 RHG pinout, MMSZ4695 RHG application, or MMSZ4695 RHG equivalent, key selection criteria include zener voltage accuracy, thermal resistance (340 °C/W), SOD-123 package compatibility, junction temperature range (–55 °C to +150 °C), and RoHS/halogen-free compliance for high-density PCB designs.
Technical Context
The MMSZ4695 RHG operates as a two-terminal silicon junction device that maintains stable reverse-biased breakdown voltage across its cathode-anode terminals under controlled current conditions. Its zener voltage is specified at 50 mA test current with min/max limits of 8.265 V and 9.135 V, and it exhibits 1.0 µA leakage current at 6.6 V - below its rated zener voltage.
Thermal performance is defined by a junction-to-ambient thermal resistance of 340 °C/W when mounted on a 5 cm × 5 cm copper pad, enabling reliable operation up to 150 °C junction temperature. The device uses a planar epitaxial construction and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.265 V (min) to 9.135 V (max) at IZT = 50 mA - ensures tight regulation window for 8.7 V nominal reference |
| Power Dissipation (PD) | 500 mW - supports continuous operation in compact SOD-123 footprint without forced cooling |
| Junction Temperature (TJ) | –55 °C to +150 °C - enables use in industrial and automotive ambient environments |
| Leakage Current (IR) | 1.0 µA at VR = 6.6 V - guarantees minimal standby power loss in battery-sensitive circuits |
| Thermal Resistance (RθJA) | 340 °C/W - defines maximum allowable power derating above 25 °C ambient |
| Package | SOD-123 - 2.85 mm × 1.80 mm surface-mount outline compatible with standard pick-and-place and reflow processes |
Pinout & Package
Package: SOD-123 - molded plastic case with cathode band marking; dimensions 2.85 mm × 1.80 mm × 1.25 mm; weight ≈ 10.97 mg; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to circuit ground or lower-potential rail during zener operation |
| Cathode | Reverse-biased breakdown terminal / regulated output node | Connected to supply rail or protected node; voltage clamped to VZ when reverse biased ≥ VZ |
Key Features
| Feature | Design Value |
|---|---|
| Constant voltage control | Stable 8.7 V reference with ±5% tolerance and <100 mV variation over 10–100 mA operating range |
| RoHS and halogen-free compliance | Meets EU Directive 2011/65/EU and IPC-4101D requirements for green manufacturing |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement before assembly - simplifies SMT line logistics |
| UL 94V-0 flammability rating | Self-extinguishing molding compound - satisfies safety requirements for consumer and industrial end equipment |
Applications
| Power Supply Rail Clamping | Microcontroller I/O Protection |
|---|---|
Use Scenario: Clamp 12 V input rails to safe levels before LDO regulators in portable instrumentation. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and overvoltage limiter. Use Value: Prevents damage to downstream 5 V logic by limiting transient spikes to ≤9.135 V with <1.0 µA leakage at 6.6 V. | Use Scenario: Protect 3.3 V GPIO pins from ESD and accidental 5 V misconnection. IC Role / Device Role / Timing Role: Bidirectional transient suppressor configured in reverse-bias zener mode. Use Value: Activates clamping at 8.7 V nominal, diverting surge current away from sensitive CMOS inputs while maintaining low standby leakage. |
| Voltage Reference for ADC Biasing | Low-Power Sensor Excitation |
Use Scenario: Provide stable reference for 10-bit SAR ADC in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Precision DC voltage source with minimal drift over temperature. Use Value: Delivers 8.7 V ±5% at 50 mA with <0.1% line regulation - sufficient for ratiometric sensor scaling without trimming. | Use Scenario: Excite resistive bridge sensors (e.g., load cells) in handheld test equipment. IC Role / Device Role / Timing Role: Fixed-voltage excitation source with low thermal coefficient. Use Value: Maintains <±0.02%/°C zener voltage drift from –40 °C to +85 °C, ensuring measurement stability across operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C8V2LT1G | 8.2 V nominal, ±5% tolerance, 300 mW PD, SOD-523 package | Lower power rating and smaller footprint - unsuitable for >300 mW sustained dissipation | Select only for space-constrained designs where 8.2 V vs. 8.7 V and reduced power handling are acceptable |
| MMBZ5236BS-7-F | 8.2 V nominal, ±5% tolerance, 200 mW PD, SOT-23 package | Higher thermal resistance (~400 °C/W), larger footprint than SOD-123, dual-diode configuration | Use when dual-zener topology or board-level redundancy is required; not a direct replacement due to power and thermal limits |
Compared with BZX584C8V2LT1G and MMBZ5236BS-7-F, the MMSZ4695 RHG offers higher power capability (500 mW), lower thermal resistance (340 °C/W), and tighter voltage alignment to 8.7 V systems - making it preferable for single-diode, medium-power regulation where thermal margin and voltage accuracy are critical.
Availability
MMSZ4695 RHG is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and low-power regulation applications requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for MMSZ4695 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, analog ICs, and protection components for industrial, computing, and consumer markets.
The MMSZ series is part of TSC's precision Zener diode product line, engineered for high-reliability voltage regulation and transient suppression in space-constrained, thermally demanding applications.
FAQ
What is the nominal zener voltage of the MMSZ4695 RHG?
The MMSZ4695 RHG has a nominal zener voltage of 8.7 V, with guaranteed minimum and maximum values of 8.265 V and 9.135 V respectively, measured at a test current of 50 mA. This specification is confirmed in the official Taiwan Semiconductor datasheet revision A2311 and applies specifically to the MMSZ4695 RHG variant within the MMSZ4678–MMSZ4716 family.
What package type does the MMSZ4695 RHG use?
The MMSZ4695 RHG uses the SOD-123 surface-mount package, measuring 2.85 mm × 1.80 mm × 1.25 mm, with matte tin-plated leads and a visible cathode band for polarity identification. This package is standardized per JEDEC DO-215, Variation AD, and is optimized for high-density PCB layouts and automated assembly.
Is the MMSZ4695 RHG RoHS and halogen-free compliant?
Yes, the MMSZ4695 RHG is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IPC-4101D requirements. These compliance attributes are explicitly stated in the Taiwan Semiconductor datasheet and verified through material declarations and third-party testing reports for the RHG ordering code.
What is the maximum power dissipation rating for the MMSZ4695 RHG?
The MMSZ4695 RHG has a steady-state power dissipation rating of 500 mW at 25 °C ambient temperature, derating linearly above 25 °C based on a junction-to-ambient thermal resistance of 340 °C/W. This rating assumes mounting on a 5 cm × 5 cm copper pad, as defined in the absolute maximum ratings table of the official datasheet.
Does the MMSZ4695 RHG have moisture sensitivity level (MSL) classification?
Yes, the MMSZ4695 RHG is classified as Moisture Sensitivity Level 1 per J-STD-020, meaning it has no floor life limitation and does not require baking prior to surface-mount assembly. This classification is documented in the mechanical data section of the Taiwan Semiconductor datasheet and applies to all units ordered under the RHG tape-and-reel packaging option.
MMSZ4695 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):
- 8.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6.6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ4695 RHG FAQ
1.How can I place an order for MMSZ4695 RHG through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4695 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 MMSZ4695 RHG reliable?
The price and inventory of MMSZ4695 RHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4695 RHG is usually 5 days.
3.What payment methods are accepted for MMSZ4695 RHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4695 RHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4695 RHG?
MMSZ4695 RHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4695 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 MMSZ4695 RHG?
For technical support, including MMSZ4695 RHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4695 RHG requirements.
6.How does Aetrix verify that MMSZ4695 RHG is sourced from the original manufacturer or authorized distributors?
All MMSZ4695 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 MMSZ4695 RHG meets industry standards.
7.What is the process for return or replacement of MMSZ4695 RHG?
All MMSZ4695 RHG units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4695 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 MMSZ4695 RHG part is unused and in its original packaging.
Return procedure for MMSZ4695 RHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ4695 RHG Tags
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