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Taiwan Semiconductor Corporation 2M15Z
- Part No.:
- 2M15Z
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
2M15Z.pdf
- Description:
- DIODE ZENER 15V 2W DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,601
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Product details
Overview
2M15Z from Taiwan Semiconductor is a 2 W, 15 V ±5% glass-passivated Zener diode in DO-204AC (DO-15) package, with 33.4 mA test current, 7.0 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.5 µA at 11.4 V, used for voltage regulation and overvoltage protection in power supply rails and I/O interface circuits.
For engineers reviewing the 2M15Z datasheet, 2M15Z pinout, 2M15Z application, or 2M15Z equivalent, key selection criteria include zener voltage tolerance, thermal resistance under PCB lead-length constraints, surge current capability (15 A IFSM), junction temperature range (–55°C to +175°C), and AEC-Q101 qualification availability for automotive-grade variants.
Technical Context
The 2M15Z operates as a single-die, silicon planar Zener diode with glass-passivated junction for stable breakdown characteristics and low leakage. Its 15 V nominal zener voltage is specified at 33.4 mA test current (IZT) and exhibits 7.0 Ω dynamic impedance (ZZT) under that condition.
It supports steady-state power dissipation of 2 W at 75°C lead temperature (TL), with absolute maximum junction temperature of +175°C and storage range matching. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for its molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15 V ±5% - precise reference voltage at 33.4 mA, enabling stable regulation in feedback loops |
| Test Current IZT | 33.4 mA - standardized bias point for guaranteed VZ and ZZT measurement |
| Zener Impedance ZZT | 7.0 Ω - low dynamic resistance ensures minimal output voltage variation under load changes |
| Max Reverse Leakage IR | 0.5 µA at 11.4 V - ultra-low leakage preserves efficiency in high-impedance bias networks |
| Power Dissipation PD | 2 W - rated at TL = 75°C on 10 mm × 10 mm Cu pad, defining thermal layout requirements |
| Surge Current IFSM | 15 A - 8.3 ms half-sine surge rating enables transient overvoltage clamping without failure |
| Junction Temp Range TJ | –55°C to +175°C - supports operation in under-hood automotive and industrial environments |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, glass-passivated, cathode indicated by band. Weight ≈ 0.400 g. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference node | Connected to lower potential side in reverse-biased regulation; defines polarity for correct orientation on PCB |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 15 V reference when reverse-biased; marked by visible band for assembly verification |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| AEC-Q101 qualified option available | Validated for automotive electronics per stress-test standard, including temperature cycling and HTRB |
| UL 94V-0 compliant molding compound | Meets flame-retardancy requirement for safety-critical power supply and industrial control applications |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring reliability in high-reliability assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Biasing |
|---|---|
Use Scenario: Clamping transients on 12 V battery-fed ECUs during load dump or jump-start events. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and overvoltage clamp in parallel with downstream DC/DC input. Use Value: Withstands 15 A surge (8.3 ms) and maintains 15 V clamping level, protecting sensitive regulators and microcontrollers. | Use Scenario: Providing stable bias voltage for analog sensor front-ends in PLC modules operating at 70°C ambient. IC Role / Device Role / Timing Role: Precision voltage reference source for op-amp biasing and ADC reference divider networks. Use Value: 0.5 µA leakage at 11.4 V minimizes error in high-impedance bias paths; ±5% tolerance ensures predictable offset calibration. |
| Consumer AC-DC Adapter Regulation | Telecom Line Interface Protection |
Use Scenario: Secondary-side voltage reference in flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback loop to regulate isolated output voltage. Use Value: 7.0 Ω ZZT ensures tight regulation across line/load variations; 2 W rating accommodates continuous dissipation during no-load conditions. | Use Scenario: Overvoltage protection on RS-485 transceiver bus lines exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Standby clamping device placed between differential pair and ground to limit common-mode excursions. Use Value: Fast response and low ZZT enable effective clamping below IC damage threshold; DO-15 package allows manual rework in field-serviceable units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 14 V nominal, 1 W rating, DO-41 package, ±5% tolerance, ZZT = 15 Ω at 25 mA | Limited to lower-power regulation; not rated for 15 A surge or 175°C operation | Select when cost sensitivity outweighs thermal/surge performance; verify PCB pad thermal relief for 1 W dissipation |
| BZX55C15 | 15 V nominal, 500 mW rating, DO-35 package, ±5% tolerance, ZZT ≈ 16 Ω at 5 mA | Lower power and surge capability; smaller footprint but higher thermal resistance | Prefer for space-constrained consumer designs where 2 W dissipation is unnecessary |
Compared with 1N4744A and BZX55C15, the 2M15Z delivers 2× power handling, 2× surge current, and extended temperature range-critical for automotive and industrial use-but requires larger DO-15 mounting area and thermal management planning.
Availability
2M15Z is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor biasing, and consumer AC-DC adapter regulation requiring stable component supply and long-lifecycle support.
Supply support for 2M15Z 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, TVS diodes, rectifiers, and Zener diodes for industrial and automotive markets.
The 2M15Z belongs to TSC's 2MxZ family of high-reliability Zener diodes designed specifically for voltage regulation and transient suppression in harsh-environment applications demanding AEC-Q101 compliance and extended temperature operation.
FAQ
What is the zener voltage tolerance for 2M15Z?
The 2M15Z has a standard zener voltage tolerance of ±5% at 15 V nominal, measured at 33.4 mA test current and 25°C ambient. This tolerance is guaranteed per the manufacturer's electrical characteristics table and applies to all standard-grade units; tighter tolerances require special ordering.
Does 2M15Z meet AEC-Q101 qualification?
The base 2M15Z part is not AEC-Q101 qualified, but the variant 2M15ZH (with "H" suffix) is explicitly qualified per AEC-Q101 Rev D. This includes stress testing for temperature cycling, high-temperature reverse bias, and unbiased high-temperature storage-required for automotive under-hood applications.
What is the maximum surge current rating for 2M15Z?
The 2M15Z supports a non-repetitive peak forward surge current (IFSM) of 15 A for an 8.3 ms single half-sine wave, per JEDEC standards. This rating assumes proper PCB thermal design with 0.375" (9.55 mm) lead length and copper pad mounting.
How does the 2M15Z compare to 1N4744A in thermal performance?
The 2M15Z offers superior thermal performance: it is rated for 2 W at TL = 75°C versus 1 W for 1N4744A, and supports junction temperatures up to +175°C versus +150°C. Its DO-204AC package also provides lower thermal resistance than the DO-41 package of 1N4744A when mounted on equivalent copper areas.
What is the leakage current specification for 2M15Z at 11.4 V?
At 11.4 V reverse voltage (VR), the 2M15Z exhibits a maximum reverse leakage current (IR) of 0.5 µA, measured at 25°C ambient. This ultra-low leakage is critical for maintaining accuracy in high-impedance bias networks and low-power standby circuits.
2M15Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 11.4 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
2M15Z FAQ
1.How can I place an order for 2M15Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2M15Z 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 2M15Z reliable?
The price and inventory of 2M15Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2M15Z is usually 5 days.
3.What payment methods are accepted for 2M15Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2M15Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2M15Z?
2M15Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2M15Z 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 2M15Z?
For technical support, including 2M15Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2M15Z requirements.
6.How does Aetrix verify that 2M15Z is sourced from the original manufacturer or authorized distributors?
All 2M15Z 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 2M15Z meets industry standards.
7.What is the process for return or replacement of 2M15Z?
All 2M15Z units undergo pre-shipment inspection (PSI). If there is an issue with 2M15Z, 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 2M15Z part is unused and in its original packaging.
Return procedure for 2M15Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2M15Z Tags
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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SMAZ12-13-F
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