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onsemi MMSZ15T1H
- Part No.:
- MMSZ15T1H
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ15T1H.pdf
- Description:
- DIODE ZENER 15V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:45,000
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Product details
Overview
MMSZ15T1H from ON Semiconductor is a 15 V, ±5% tolerance Zener diode in SOD−123 package, rated for 500 mW power dissipation at 75°C on FR−5 board, with 30 Ω dynamic impedance at 5 mA and 0.05 µA reverse leakage at 10.5 V, used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ15T1H datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior, junction-to-lead thermal resistance (150 °C/W), ESD robustness (>16 kV HBM), and AEC−Q101 qualification status for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage regulator by maintaining a stable reverse breakdown voltage across its cathode–anode terminals under controlled Zener current (IZT = 5 mA). Its 15 V nominal Zener voltage exhibits a positive temperature coefficient near zero crossing, minimizing drift over −55°C to +150°C operating range.
The SOD−123 package enables automated placement and reflow soldering with 260°C/10 s maximum solder temperature, while its void-free thermosetting plastic case meets UL 94 V−0 flammability rating and supports high-density PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25–15.75 V @ IZT = 5 mA - defines regulated output voltage window with ±5% tolerance |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - sets maximum continuous power handling on standard FR−5 board |
| Zener Impedance (ZZT) | 30 Ω max @ IZT = 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Leakage (IR) | 0.05 µA max @ VR = 10.5 V - ensures minimal quiescent current draw below breakdown |
| Thermal Resistance (RJL) | 150 °C/W - quantifies heat transfer efficiency from junction to lead, critical for thermal design margin |
| ESD Rating | Class 3 (>16 kV) per HBM - confirms robustness against electrostatic discharge during handling and assembly |
| AEC−Q101 Qualified | Yes - validates suitability for automotive electronics requiring PPAP documentation and process control |
Pinout & Package
SOD−123 surface-mount package with cathode indicated by polarity band; dimensions: 2.54–2.84 mm length × 1.40–1.80 mm width × 0.94–1.35 mm height; lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in compact, low-power voltage clamp and reference circuits without heatsinking |
| ±5% Zener Voltage Tolerance | Supports tight regulation requirements in precision analog signal conditioning and ADC reference buffering |
| 150 °C/W Junction-to-Lead Thermal Resistance | Allows accurate thermal modeling for board-level reliability prediction under sustained load |
| AEC−Q101 Qualification | Meets automotive-grade stress testing and process control standards for under-hood and infotainment systems |
| ESD Class 3 Robustness | Eliminates need for external ESD protection in handheld and portable equipment designs |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Input Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for analog front-end amplifiers in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Zener voltage reference and transient clamp protecting op-amp inputs from load dump spikes. Use Value: Maintains 15 V reference stability across −40°C to +125°C ambient with <0.05 µA leakage, reducing calibration drift. |
Use Scenario: Overvoltage protection on 24 V DC digital input modules exposed to inductive switching transients. IC Role / Device Role / Timing Role: Shunt regulator clamping surge energy before it reaches downstream logic interface ICs. Use Value: Absorbs 225 W nonrepetitive surges (8×20 µs) while limiting voltage to ≤15.75 V, preventing latch-up in microcontrollers. |
| Medical Wearable Battery Monitoring | Consumer IoT Power Rail Clamping |
Use Scenario: Reference voltage generation for lithium-ion cell voltage measurement in compact health monitors. IC Role / Device Role / Timing Role: Precision voltage reference for 12-bit ADC conversion of battery pack voltage. Use Value: Delivers 14.25–15.75 V regulation with 30 Ω dynamic impedance, ensuring <0.5% measurement error over temperature. |
Use Scenario: Clamp circuit on 3.3 V LDO output rail in smart home hubs subject to ESD events. IC Role / Device Role / Timing Role: Low-leakage shunt protector absorbing HBM discharges without affecting standby current. Use Value: Provides >16 kV HBM ESD immunity while drawing only 0.05 µA at 10.5 V, preserving battery life. |
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-C15 | Same 15 V nominal Zener, but SOT−23 package (higher RJA = 300 °C/W), 350 mW rating, no AEC−Q101 qualification | Lower power density and reduced thermal performance; suitable only for non-automotive, low-duty-cycle uses | Select when footprint compatibility with SOT−23 is required and automotive qualification is not needed. |
| MMSZ15ET1G | Identical electrical specs and SOD−123 package; differs only in Pb−free marking suffix and tape/reel packaging (3000 pcs vs. 10000 pcs) | No functional difference; same thermal, electrical, and reliability behavior in circuit operation | Select for RoHS compliance verification traceability or when sourcing from distributors stocking G-suffix variants. |
Compared with BZX84-C15, MMSZ15T1H offers superior thermal management (150 vs. 300 °C/W RJL) and automotive qualification; compared with MMSZ15ET1G, it shares identical performance but may differ in packaging configuration and lot traceability scope.
Availability
MMSZ15T1H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial input protection, medical battery monitoring, and consumer IoT power rail clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMSZ15T1H 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
ON Semiconductor is a global semiconductor supplier specializing in power management, analog, sensor, and connectivity solutions for automotive, industrial, and cloud power applications.
The MMSZxxxET1 series was designed specifically for high-reliability, surface-mount Zener regulation in space-constrained and thermally demanding environments, emphasizing AEC−Q101 compliance and automated assembly compatibility.
FAQ
What is the Zener voltage tolerance of MMSZ15T1H?
The MMSZ15T1H has a nominal Zener voltage of 15 V with a tolerance of ±5%, resulting in a guaranteed range of 14.25 V to 15.75 V when tested at IZT = 5 mA and TA = 25°C. This tolerance remains valid across the full operating temperature range of −55°C to +150°C, as confirmed in the ON Semiconductor datasheet revision 6.
Is MMSZ15T1H qualified for automotive applications?
Yes, MMSZ15T1H is AEC−Q101 qualified and PPAP capable, meeting the stress test requirements for automotive electronics including temperature cycling, humidity bias, and mechanical shock. It is explicitly listed in the "SZ Prefix for Automotive" section of the datasheet, confirming its suitability for under-hood and infotainment systems.
What is the maximum peak surge power rating for MMSZ15T1H?
The MMSZ15T1H supports a nonrepetitive peak surge power of 225 W for an 8 × 20 µs pulse waveform at TL ≤ 25°C, as specified in the Maximum Ratings table. This rating enables effective transient voltage suppression in industrial and automotive power rails without requiring additional TVS devices.
Does MMSZ15T1H have a Pb−free package?
Yes, MMSZ15T1H is supplied in a Pb−free, RoHS-compliant SOD−123 package, consistent with ON Semiconductor's lead-free initiative. The "T1H" suffix denotes the same environmental compliance as the "G" suffix variants (e.g., MMSZ15ET1G), verified via material declarations and JEDEC J-STD-609 reporting.
What is the thermal resistance from junction to lead (RJL) for MMSZ15T1H?
The thermal resistance from junction to lead (RJL) for MMSZ15T1H is 150 °C/W, measured using the infrared scan method per Note 3 in the datasheet. This value is critical for calculating junction temperature rise under steady-state conditions and must be used instead of RJA (340 °C/W) when the device is mounted on a thermally enhanced pad.
MMSZ15T1H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ15T1H FAQ
1.How can I place an order for MMSZ15T1H through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ15T1H 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 MMSZ15T1H reliable?
The price and inventory of MMSZ15T1H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ15T1H is usually 5 days.
3.What payment methods are accepted for MMSZ15T1H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ15T1H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ15T1H?
MMSZ15T1H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ15T1H 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 MMSZ15T1H?
For technical support, including MMSZ15T1H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ15T1H requirements.
6.How does Aetrix verify that MMSZ15T1H is sourced from the original manufacturer or authorized distributors?
All MMSZ15T1H 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 MMSZ15T1H meets industry standards.
7.What is the process for return or replacement of MMSZ15T1H?
All MMSZ15T1H units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ15T1H, 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 MMSZ15T1H part is unused and in its original packaging.
Return procedure for MMSZ15T1H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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