Diodes Incorporated MMSTA06-7-F

Overview

MMSTA06-7-F from Diodes Incorporated is an NPN small-signal surface-mount transistor in SOT-323 package, rated for 80 V V_CEO, 500 mA I_C, and 200 mW P_D, optimized for medium-power amplification and switching in space-constrained consumer and industrial control circuits.

For engineers reviewing the MMSTA06-7-F datasheet, MMSTA06-7-F pinout, MMSTA06-7-F application, or MMSTA06-7-F equivalent, key selection criteria include V_CEO/V_CBO rating, h_FE at 10 mA and 100 mA, V_CE(SAT) @ 100 mA/10 mA, f_T, and thermal resistance under FR-4 PCB mounting per AP02001 layout.

Technical Context

This NPN bipolar junction transistor uses epitaxial planar die construction for stable gain and low leakage. It operates across –55°C to +150°C with 625°C/W R_θJA on standard FR-4 PCB, supporting reliable performance in thermally demanding environments.

Its 100 MHz f_T enables RF preamplifier and high-speed switching use up to ~10 MHz, while V_BE(SAT) ≤ 1.2 V and V_CE(SAT) ≤ 0.25 V at I_C = 100 mA / I_B = 10 mA ensure efficient saturation in digital logic interface and load-switching roles.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-small surface-mount plastic case (2.00–2.20 mm length × 1.15–1.35 mm width × 0.25–0.40 mm height), UL 94V-0 rated, lead-free matte tin plating, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal switching and amplification applications.

Compared with BC846B,215 and MMBT3904LT1G, MMSTA06-7-F uniquely balances 80 V robustness, 100 MHz bandwidth, and ultra-compact SOT-323 size-making it optimal for space-limited, medium-voltage industrial and automotive signal interfaces where both voltage margin and board area matter.

Availability

MMSTA06-7-F is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery interfaces, industrial sensor signal conditioning, and smart home Zigbee router nodes requiring stable component supply and RoHS-compliant sourcing.

Supply support for MMSTA06-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient components for industrial, computing, and consumer markets.

The MMSTA06-7-F belongs to Diodes' small-signal transistor product line, designed specifically for compact, high-voltage-capable switching and amplification in space- and power-constrained applications.

FAQ

What is the maximum safe operating temperature for MMSTA06-7-F?

The device supports junction and storage temperatures from –55°C to +150°C. Its thermal resistance is 625°C/W on FR-4 PCB per AP02001 layout; actual max ambient depends on power dissipation-e.g., at 100 mW, T_A must stay ≤ 87.5°C to keep T_J ≤ 150°C.

Is MMSTA06-7-F pin-compatible with MMSTA05-7-F?

Yes-both share identical SOT-323 package and pinout (Emitter-Base-Collector). The only functional difference is voltage rating: MMSTA05 has V_CEO/V_CBO = 60 V, while MMSTA06 is rated at 80 V; otherwise, electrical characteristics and marking (K1G) match.

Does MMSTA06-7-F require a heatsink in typical applications?

No heatsink is required. With 200 mW max power dissipation and 625°C/W R_θJA, junction temperature rise is ≤125°C at full power-within safe limits if ambient stays ≤25°C. Derating per Fig. 1 applies above 25°C ambient.

Can MMSTA06-7-F be used in linear amplifier configurations?

Yes-it is characterized for h_FE stability from 1 mA to 100 mA and exhibits low V_CE(SAT) and predictable f_T. For linear use, bias must maintain V_CE > 1 V and limit I_C to avoid exceeding P_D and thermal limits on the PCB layout specified in AP02001.