onsemi MMBT2132T3G

Overview

MMBT2132T3G from onsemi is an NPN bipolar junction transistor in a TSOP-6 (SC-74) package, rated for 30 V V_CEO, 700 mA I_C, and 342 mW power dissipation at T_C = 25°C. It delivers h_FE ≥ 150 at I_C = 100 mA and V_CE = 3.0 V, with V_CE(sat) ≤ 0.25 V at I_C = 500 mA/I_B = 50 mA - suitable for low-voltage switching in portable power management circuits.

For engineers reviewing the MMBT2132T3G datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-collector configuration, Pb-free TSOP-6 footprint, guaranteed h_FE minimum, saturation voltage under high-current drive, and thermal performance on FR-4 PCBs per Note 1.

Technical Context

This NPN BJT supports general-purpose linear amplification and digital switching with verified DC current gain stability across −40°C to +150°C. Its dual-collector structure (Pins 2 & 5) enables parallel current handling or redundancy in critical paths without external paralleling components.

The device operates with V_EBO = 5.0 V and V_CBO = 40 V, allowing safe use in 24 V industrial control interfaces where base-emitter reverse bias and collector-base standoff must be maintained during transients.

Key Specifications

Pinout & Package

MMBT2132T3G uses the TSOP-6 (SC-74) package, Case 318F, Style 2, with exposed pad not electrically connected. Pin assignments are validated per onsemi's marking diagram and mechanical outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN transistor applications.

Compared with MMBT2132T3G, MMBT2131T3G serves complementary circuit roles rather than substitution, while ZXTN25040DFHTA trades dual-collector functionality for enhanced voltage rating and thermal capability - making each suitable for distinct topology requirements.

Availability

MMBT2132T3G is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC output stages, portable medical pump drivers, and smart home HVAC valve control requiring stable component supply and RoHS-compliant packaging.

Supply support for MMBT2132T3G 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

onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The MMBT2132T3G belongs to onsemi's general-purpose bipolar transistor family, engineered for cost-sensitive, high-reliability switching and amplification in space-constrained surface-mount designs.

FAQ

What is the maximum continuous collector current rating for MMBT2132T3G?

The MMBT2132T3G is rated for a maximum continuous collector current (I_C) of 700 mA at T_C = 25°C. Derating is required above this temperature per the thermal resistance curve; at T_C = 85°C, the usable I_C drops to approximately 350 mA to maintain safe junction temperature. This rating applies to both collector pins (2 and 5) used in parallel.

Does MMBT2132T3G support Pb-free soldering processes?

Yes, MMBT2132T3G is explicitly manufactured in a Pb-free TSOP-6 package and qualified for standard lead-free reflow profiles including JEDEC J-STD-020. The "G" suffix denotes compliance with RoHS Directive 2011/65/EU, and the device has been tested for reliability under IPC-A-610 Class 2 conditions.

How are the dual collector pins (2 and 5) intended to be used in circuit design?

The dual collector pins (2 and 5) of MMBT2132T3G are internally connected to the same semiconductor die region and are designed to be used in parallel to share current, reduce trace resistance, or provide redundancy. They must be routed to the same net - not independently switched - and their combined current capacity remains 700 mA total, not 1.4 A.

What is the guaranteed DC current gain (h_FE) for MMBT2132T3G under standard test conditions?

The MMBT2132T3G guarantees h_FE ≥ 150 when measured at V_CE = 3.0 V and I_C = 100 mA, per the official onsemi datasheet Rev. 1. This minimum value is production-tested and assured across the full operating temperature range of −55°C to +150°C, supporting predictable base drive sizing in production designs.

Can MMBT2132T3G replace a standard SOT-23 NPN transistor in existing layouts?

No - MMBT2132T3G uses a 6-pin TSOP-6 (SC-74) package with non-standard pinout (e.g., Pins 1 & 4 are NC, dual collectors on Pins 2 & 5), unlike 3-pin SOT-23 devices. Direct replacement would require PCB redesign. It is not a drop-in substitute but rather a purpose-built solution for applications benefiting from dual-collector architecture and higher current capability.