Taiwan Semiconductor Corporation M3Z9V1C RRG

Overview

M3Z9V1C from Taiwan Semiconductor is a surface-mount 9.1 V ±5% Zener diode in SOD-323F package, rated for 200 mW power dissipation and operating across –55°C to +150°C junction temperature range; used for low-voltage stabilization and voltage reference in DC/DC converters and lighting circuits.

For engineers reviewing the M3Z9V1C datasheet, M3Z9V1C pinout, M3Z9V1C application, or M3Z9V1C equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (≤50 Ω at 5 mA), leakage current (≤0.5 µA at 7 V), and moisture sensitivity level (J-STD-020 Level 1).

Technical Context

The M3Z9V1C operates as a single-die, silicon planar Zener diode optimized for precision voltage regulation in space-constrained applications. Its design supports stable reverse-bias breakdown at nominal 9.1 V with tight 5% tolerance and low dynamic impedance (50 Ω max at I_Z = 5 mA), enabling accurate reference generation under varying load conditions.

It features matte tin-plated leads compliant with J-STD-002 solderability, meets JESD201 Class 1A whisker resistance, and uses UL 94 V-0 molding compound. Polarity is marked by a cathode band on the SOD-323F case.

Key Specifications

Pinout & Package

SOD-323F is a miniature surface-mount plastic package with two terminals: anode and cathode. Cathode is identified by a visible band on the device body. The package complies with JEDEC MO-203AA outline and supports automated pick-and-place handling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Compared with BZX384-C9V1 and MMBZ5240BS, the M3Z9V1C offers optimal fit for space-constrained, cost-sensitive applications requiring J-STD-020 Level 1 handling and strict 200 mW thermal envelope-without sacrificing voltage accuracy or leakage performance.

Availability

M3Z9V1C is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and full traceability across production batches.

Supply support for M3Z9V1C 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 devices, including Zener, Schottky, and switching diodes, with global distribution and AEC-Q200 qualified product lines.

The M3Z9V1C belongs to TSC's M3ZxVC series of ultra-miniature Zener diodes designed specifically for high-density power management in consumer, industrial, and lighting applications where SOD-323F footprint and J-STD-020 Level 1 handling are critical.

FAQ

What is the nominal zener voltage and tolerance of the M3Z9V1C?

The M3Z9V1C has a nominal zener voltage of 9.1 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 8.65 V and 9.56 V when tested at 5 mA. This specification is guaranteed per the manufacturer's electrical characteristics table and applies across the full operating temperature range of –55°C to +150°C. The M3Z9V1C maintains this tolerance without external calibration or trimming.

What is the maximum power dissipation rating for the M3Z9V1C?

The M3Z9V1C is rated for a maximum power dissipation of 200 mW at 25°C ambient temperature. Derating is required above 25°C, following the linear curve shown in the "Power Dissipation vs. Ambient Temperature" graph in the datasheet. At 75°C ambient, the usable power drops to approximately 120 mW. This rating directly constrains the safe operating current in shunt regulator configurations using the M3Z9V1C.

Does the M3Z9V1C meet RoHS and halogen-free requirements?

Yes, the M3Z9V1C complies with EU RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. These compliance statements are explicitly confirmed in the "Features" section of the official Taiwan Semiconductor datasheet. The device uses lead-free matte tin plating on terminals and UL 94 V-0 compliant molding compound, making it suitable for environmentally regulated markets including Europe and China.

What is the cathode identification method on the M3Z9V1C package?

The cathode of the M3Z9V1C is identified by a distinct color band printed on the SOD-323F package body. This band aligns with the cathode terminal and must be oriented toward the higher-potential side of the circuit during placement. The band position matches JEDEC MO-203AA mechanical drawing standards, and polarity verification is supported by forward voltage testing (V_F ≈ 0.9 V at 10 mA), confirming correct orientation before system integration.

What is the dynamic impedance of the M3Z9V1C and why does it matter?

The M3Z9V1C has a maximum dynamic impedance (Z_ZT) of 50 Ω at a test current of 5 mA. This parameter quantifies how much the zener voltage changes with small variations in current - lower Z_ZT means better regulation stability. In practice, this enables the M3Z9V1C to maintain tighter voltage control in feedback networks and reference circuits where load current fluctuates, directly improving system accuracy without additional compensation components.