NXP Semiconductors BAP65-05,215

Overview

BAP65-05 from NXP Semiconductors is a dual-element silicon PIN diode in common-cathode configuration, housed in an SOT23 package. It delivers low forward resistance (0.35 Ω at 100 mA), low capacitance (0.425 pF at 20 V reverse bias), and AEC-Q101 qualification for automotive-grade RF switching in mobile transceivers and TV tuners.

For engineers reviewing the BAP65-05 datasheet, BAP65-05 pinout, BAP65-05 application, or BAP65-05 equivalent, key selection criteria include its 30 V reverse voltage rating, 100 mA forward current capability, 9.4 dB isolation at 900 MHz, and SOT23-compatible footprint for compact RF front-end designs.

Technical Context

The BAP65-05 integrates two PIN diodes sharing a single cathode terminal, enabling bidirectional RF switch control with minimal insertion loss (0.06 dB at 900 MHz, 100 mA bias) and high off-state isolation (9.4 dB at 900 MHz, 0 V bias). Its charge carrier lifetime of 0.17 μs supports fast RF switching transitions.

Designed for DC-biased RF signal routing, it operates with forward current-controlled resistance modulation and reverse-bias–controlled capacitance tuning. The device exhibits stable performance across –65 °C to +150 °C junction temperature range and meets automotive reliability standards per AEC-Q101.

Key Specifications

Pinout & Package

SOT23 plastic surface-mounted package (3 leads), 2.8 mm × 1.4 mm × 1.1 mm body size, with gull-wing leads and standard JEDEC TO-236AB outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF PIN diode switch applications.

Compared with SKY13353-374LF and BAP64-05,215, the BAP65-05 uniquely offers dual-anode/common-cathode integration with 30 V VR and 0.425 pF capacitance - making it optimal for space-constrained, automotive-grade dual-path RF switches requiring robust off-state blocking and low on-state loss.

Availability

BAP65-05 is available at Aetrix Electronics and suitable for RF attenuators and switches, TV tuner bandswitching, and mobile communication transmit/receive switching requiring stable component supply and automotive-grade reliability.

Supply support for BAP65-05 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The BAP65-05 belongs to NXP's RF PIN diode portfolio, engineered specifically for high-isolation, low-loss RF switching in automotive infotainment, broadcast tuners, and wireless infrastructure front-ends.

FAQ

What is the maximum reverse voltage rating for the BAP65-05?

The BAP65-05 has a maximum continuous reverse voltage (VR) rating of 30 V, as specified in Table 4 of the official NXP datasheet Rev. 2.1. This rating applies under steady-state conditions and must not be exceeded to prevent junction breakdown. The device maintains stable capacitance and leakage performance up to this limit, supporting use in 24 V automotive RF rails and high-voltage tuner applications.

How does the common-cathode configuration of the BAP65-05 benefit RF switch design?

The common-cathode configuration of the BAP65-05 allows both anodes (pins 1 and 2) to be independently biased while sharing a single cathode (pin 3), reducing PCB routing complexity and eliminating the need for external node tying. This architecture simplifies series-shunt switch implementation in dual-path RF systems and improves layout symmetry - directly enhancing isolation repeatability and thermal coupling between diode elements in the BAP65-05.

What is the typical insertion loss of the BAP65-05 at 1800 MHz?

The BAP65-05 exhibits a typical insertion loss (Lins) of 0.14 dB at 1800 MHz when biased with 100 mA forward current, as documented in Table 6 of the NXP datasheet. This low loss is achieved due to its 0.35 Ω forward resistance and optimized package inductance (1.4 nH), making the BAP65-05 suitable for LTE Band 3 and Band 4 applications where signal fidelity in the transmit path is critical.

Is the BAP65-05 qualified for automotive applications?

Yes, the BAP65-05 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating reliable operation from –65 °C to +150 °C junction temperature. The BAP65-05 is commonly deployed in automotive infotainment antenna switching and telematics RF front-ends.

What is the diode capacitance of the BAP65-05 at 20 V reverse bias?

At 20 V reverse bias and 1 MHz, the BAP65-05 has a typical diode capacitance (Cd) of 0.425 pF, with a guaranteed maximum of 0.9 pF, per Table 6 in the NXP datasheet. This low, tightly controlled capacitance enables broadband impedance matching and minimal frequency roll-off in RF switch and attenuator designs using the BAP65-05.