Diodes Incorporated CTA2P1N-7-F

Overview

CTA2P1N-7-F from Diodes Incorporated is an obsolete complex transistor array integrating a PNP bipolar transistor (MMBT4403 type) and an N-channel MOSFET (2N7002 type) in a single SOT-363 package. It delivers V_CEO = −40 V, I_C = −600 mA for the PNP element and V_DSS = 60 V, R_DS(on) = 3.2 Ω @ V_GS = 5 V for the MOSFET, enabling compact dual-function switching in space-constrained DC-DC bias control and level-shifting circuits.

For engineers reviewing the CTA2P1N-7-F datasheet, CTA2P1N-7-F pinout, CTA2P1N-7-F application, or CTA2P1N-7-F equivalent, key selection criteria include verified complementary NPN/P-channel pairing, validated thermal derating up to +150°C, confirmed SOT-363 footprint compatibility, and documented dual-element isolation performance under pulsed switching conditions.

Technical Context

The device implements a monolithic hybrid configuration with electrically isolated Q1 (PNP BJT) and Q2 (N-channel enhancement-mode MOSFET), sharing only common substrate grounding. Q1 operates as a saturated switch with h_FE = 30–300 across I_C = −100 µA to −500 mA, while Q2 provides logic-level gate drive compatibility with V_GS(th) = 1.0–2.0 V and sub-10 ns turn-on delay.

No internal biasing or feedback networks exist between elements; each functions independently with separate terminal assignments. The SOT-363 package supports simultaneous thermal management of both semiconductor junctions, with R_θJA = 833°C/W measured on FR-4 PCB per AP02001 layout.

Key Specifications

Pinout & Package

SOT-363 package: 2.20 × 1.35 × 0.90 mm body with gull-wing leads, matte tin-plated Alloy 42 leadframe, JEDEC-compliant footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-transistor switching applications.

Compared with CTA2P1N-7-F, CTA2N1P-7-F maintains identical form factor and thermal behavior but reverses polarity for NPN/P-ch use cases, whereas ZXTD0905N8TA trades miniaturization for higher power handling and requires mechanical rework.

Availability

CTA2P1N-7-F is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, DC-DC converter bias circuits, and level-shifting interface applications requiring stable component supply despite its obsolete status.

Supply support for CTA2P1N-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 components for industrial, automotive, and computing markets.

The CTA2P1N belongs to Diodes' Complex Transistor Array product line, designed to reduce bill-of-materials count and improve layout efficiency in multi-rail switching applications where space and thermal coupling are critical.

FAQ

Is CTA2P1N-7-F still in production?

No - Diodes Incorporated officially discontinued CTA2P1N-7-F as of October 2021 (DS30296 Rev. 10-4). Aetrix Electronics maintains limited legacy stock and supports last-time buys with full traceability and documentation, including original date-code-matched reels where available.

Can CTA2P1N-7-F be substituted with CTA2N1P-7-F in the same PCB layout?

Yes - CTA2N1P-7-F shares identical SOT-363 package dimensions, pinout, and thermal characteristics, but implements NPN/P-channel instead of PNP/N-channel. Electrical substitution requires verifying circuit polarity and biasing; no physical rework is needed.

What is the maximum safe operating current for Q2 at 85°C ambient?

At T_A = 85°C, derated power dissipation is ~60 mW (per Fig. 7). With R_DS(on) = 4.4 Ω @ T_j = 125°C, maximum continuous I_D ≈ 117 mA to maintain junction temperature ≤150°C using standard FR-4 layout per AP02001.

Does the device include ESD protection on gate or base terminals?

No - the datasheet specifies no integrated ESD protection structures. External 10 kΩ series gate/base resistors and TVS diodes are recommended for systems exposed to IEC 61000-4-2 Level 2+ environments, especially in automotive or industrial field deployments.