My Inquiry
My Account
Taiwan Semiconductor Corporation 2M24Z
- Part No.:
- 2M24Z
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
2M24Z.pdf
- Description:
- DIODE ZENER 24V 2W DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,576
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
2M24Z from Taiwan Semiconductor is a 2 W, 24 V ±5% glass-passivated Zener diode in DO-204AC (DO-15) package, with 13 Ω zener impedance at 20.8 mA test current, 0.5 µA leakage at 18.2 V, and rated for -55°C to +175°C junction operation. It serves as a precision voltage reference and overvoltage clamp in automotive power rails and industrial sensor signal conditioning.
For engineers reviewing the 2M24Z datasheet, 2M24Z pinout, 2M24Z application, or 2M24Z equivalent, key selection criteria include its AEC-Q101 qualification option, low 13 Ω dynamic impedance at 20.8 mA, 2 W steady-state power rating at 75°C lead temperature, and DO-15 mechanical compatibility with standard through-hole PCB layouts.
Technical Context
The 2M24Z operates as a single-die, silicon planar Zener diode with glass-passivated junction for stable reverse breakdown and low leakage. Its 24 V nominal zener voltage is specified at 20.8 mA (IZT), with guaranteed tolerance of ±5% and temperature coefficient optimized for mid-range voltage regulation.
It exhibits 13 Ω dynamic impedance (ZZT) at IZT and 750 Ω knee impedance (ZZK) at 0.25 mA (IZK), supporting both precision shunt regulation and transient suppression. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% at 20.8 mA - defines stable regulation point under nominal bias |
| Power Dissipation (PD) | 2 W at TL = 75°C - supports continuous operation on 10 mm × 10 mm Cu pad |
| Zener Impedance (ZZT) | 13 Ω at IZT - ensures minimal output voltage variation under load transients |
| Leakage Current (IR) | 0.5 µA at VR = 18.2 V - enables low-power standby mode without excessive quiescent loss |
| Max Zener Current (IZM) | 76 mA non-repetitive - sets safe surge handling limit for 8.3 ms half-sine pulses |
| Junction Temp Range | -55°C to +175°C - qualified for under-hood automotive and industrial control 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-impedance path during forward bias | Connected to lower-potential node in shunt regulator or clamping configuration |
| Cathode | Zener breakdown terminal / regulated output reference node | Connected to voltage rail being stabilized; cathode band marks this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification option | Available with "H" suffix (e.g., 2M24ZH) for automotive-grade reliability validation |
| Glass-passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| Low leakage current | 0.5 µA at 18.2 V enables energy-efficient voltage monitoring in battery-backed systems |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for industrial safety-critical enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 12 V/24 V supply lines against load dump transients in engine control units. IC Role / Device Role / Timing Role: Shunt voltage clamp absorbing up to 15 A surge (IFSM) while holding rail below 27.4 V. Use Value: Prevents downstream MCU and analog front-end damage using proven DO-15 footprint and 2 W thermal margin. | Use Scenario: Providing stable 24 V reference for 4–20 mA transmitter loop power supplies. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining ±5% output across temperature and load variations. Use Value: Delivers 13 Ω dynamic impedance at 20.8 mA to minimize reference drift in 0.1–10 mA load range. |
| Programmable Logic Controller I/O Protection | Renewable Energy Charge Controller Reference |
Use Scenario: Protecting digital input channels from ESD and inductive kickback in factory automation modules. IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging low IR (0.5 µA) and fast response of glass junction. Use Value: Enables reliable 24 V logic-level detection without false triggering due to leakage-induced offset. | Use Scenario: Stabilizing feedback reference in solar MPPT controllers operating in desert ambient conditions. IC Role / Device Role / Timing Role: High-temperature-stable voltage reference with 175°C max junction rating. Use Value: Maintains regulation accuracy over -40°C to +85°C ambient without derating, supported by ±5% VZ tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5242B | 200 mW SOT-23 package; 24 V ±5%, 22 Ω ZZT at 10 mA - lower power, surface-mount only | Not suitable for 2 W dissipation or through-hole assembly; limited to low-current bias networks | Select when board space is constrained and power demand is ≤200 mW |
| Vishay 1N5242B | 500 mW DO-35 package; 24 V ±5%, 30 Ω ZZT at 10 mA - lower power rating and higher impedance than 2M24Z | Lacks AEC-Q101 option and 175°C TJ rating; not recommended for automotive under-hood use | Select for cost-sensitive consumer applications where 2 W and high-temp operation are unnecessary |
Compared with MMBZ5242B and 1N5242B, the 2M24Z provides 4× higher power handling, 40% lower dynamic impedance at rated current, and full AEC-Q101 qualification support - making it the only choice for robust 24 V shunt regulation in automotive and industrial power domains.
Availability
2M24Z is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor signal conditioning, programmable logic controller I/O protection, and renewable energy charge controller reference requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 2M24Z 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, including Zener, TVS, rectifier, and MOSFET families, with global distribution and AEC-Q101 qualification capability.
The 2MxxZ series was designed specifically for high-reliability voltage regulation and transient suppression in automotive and industrial applications, emphasizing thermal robustness, tight voltage tolerance, and long-term parametric stability.
FAQ
What is the maximum steady-state power dissipation for 2M24Z?
The 2M24Z has a steady-state power dissipation (PD) of 2 W when mounted on a 10 mm × 10 mm copper pad at lead temperature (TL) of 75°C. This rating assumes proper PCB thermal design; derating is required above TL = 75°C per the device's thermal resistance curve. The 2M24Z must not exceed this limit in continuous operation to maintain reliability and avoid junction overheating.
Is 2M24Z AEC-Q101 qualified?
The base 2M24Z is not automatically AEC-Q101 qualified; however, the variant 2M24ZH (with "H" suffix) is explicitly qualified per AEC-Q101 Rev D for stress testing including temperature cycling, HTRB, and ESD. Only 2M24ZH carries the automotive qualification - the standard 2M24Z is intended for industrial and commercial use unless otherwise specified in ordering code.
What is the zener impedance of 2M24Z and why does it matter?
The 2M24Z has a maximum zener impedance (ZZT) of 13 Ω at 20.8 mA test current (IZT). This low dynamic impedance ensures minimal output voltage deviation during load or line transients - critical for stable reference generation in precision analog circuits and effective clamping in overvoltage protection schemes where rail integrity must be preserved.
Can 2M24Z replace 1N4749A in a 24 V regulator circuit?
The 2M24Z can functionally replace 1N4749A in many 24 V shunt regulator designs, as both are 24 V ±5% Zeners in DO-15 packages. However, the 2M24Z offers lower ZZT (13 Ω vs. ~20 Ω), higher IZM (76 mA vs. 63 mA), and optional AEC-Q101 qualification. PCB layout remains identical, but verify thermal pad design meets 2 W dissipation requirements before substitution.
What is the leakage current specification for 2M24Z at 18.2 V?
The 2M24Z specifies a maximum leakage current (IR) of 0.5 µA at VR = 18.2 V (i.e., 75% of nominal VZ). This ultra-low leakage supports energy-efficient operation in always-on monitoring circuits and battery-powered systems where standby current must remain below 1 µA - confirmed per the manufacturer's electrical characteristics table.
2M24Z 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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 13 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 18.2 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)
2M24Z FAQ
1.How can I place an order for 2M24Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2M24Z 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 2M24Z reliable?
The price and inventory of 2M24Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2M24Z is usually 5 days.
3.What payment methods are accepted for 2M24Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2M24Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2M24Z?
2M24Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2M24Z 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 2M24Z?
For technical support, including 2M24Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2M24Z requirements.
6.How does Aetrix verify that 2M24Z is sourced from the original manufacturer or authorized distributors?
All 2M24Z 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 2M24Z meets industry standards.
7.What is the process for return or replacement of 2M24Z?
All 2M24Z units undergo pre-shipment inspection (PSI). If there is an issue with 2M24Z, 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 2M24Z part is unused and in its original packaging.
Return procedure for 2M24Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2M24Z 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…
