Diodes Incorporated DLPT05-7-F

Overview

DLPT05-7-F from Diodes Incorporated is a unidirectional surface-mount TVS diode designed for high-speed data line transient protection, featuring 300W peak pulse power (8×20µs), 75V peak repetitive reverse voltage (V_RRM), 5V reverse standoff voltage (V_RWM), and 9.8V clamping voltage at 1A. It protects USB, RS-485, CAN, and Ethernet interfaces against IEC 61000-4-2 Level 4 ESD (±30kV air/±30kV contact) and IEC 61000-4-4 EFT.

For engineers reviewing the DLPT05-7-F datasheet, DLPT05-7-F pinout, DLPT05-7-F application, or DLPT05-7-F equivalent, this device delivers low-capacitance (1.9pF), low-leakage (<20µA), and fast-response transient suppression in SOT-23 packaging - critical for signal integrity in high-speed serial interfaces.

Technical Context

The DLPT05-7-F employs a silicon avalanche diode structure optimized for low-capacitance transient clamping on bidirectional or unidirectional data lines. Its 1.9pF capacitance at 0V ensures minimal signal distortion up to 500MHz, while the 9.8V clamping voltage limits stress on downstream transceivers during 1A 8×20µs surges.

It operates across –55°C to +150°C with a thermal resistance of 417°C/W (J-A, FR-4, 2oz copper), and its SOT-23 package supports automated placement and reflow soldering per MIL-STD-202. The device is fully RoHS-compliant, halogen- and antimony-free ("Green"), and rated for moisture sensitivity level 1.

Key Specifications

Pinout & Package

DLPT05-7-F is housed in an industry-standard SOT-23 package (JEDEC TO-236AB), measuring 2.90 mm × 1.30 mm × 1.03 mm, with matte tin-plated Alloy 42 leads and UL 94V-0 molded plastic body. Moisture sensitivity level is 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar data line transient protection applications.

Compared with SMAJ5.0A and TPD2E001DRYR, DLPT05-7-F uniquely balances ultra-low capacitance (1.9 pF), tight clamping (9.8 V), and SOT-23 footprint - making it optimal for single-line, high-speed data protection where signal fidelity and surge margin are both critical.

Availability

DLPT05-7-F is available at Aetrix Electronics and suitable for USB 2.0 interface protection, RS-485 fieldbus nodes, and CAN FD automotive gateways requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.

Supply support for DLPT05-7-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The DLPT series targets high-reliability transient protection for high-speed serial interfaces, emphasizing low capacitance, precise clamping, and compliance with IEC 61000-4-x standards for industrial, automotive, and communications equipment.

FAQ

What is the maximum operating temperature for DLPT05-7-F?

The DLPT05-7-F is rated for junction and storage temperatures from –55°C to +150°C. Its thermal resistance (R_θJA) is 417°C/W when mounted on a standard FR-4 PCB with 2 oz copper per Diodes' AP02001 pad layout, enabling reliable operation in under-hood automotive or industrial control cabinet environments.

Can DLPT05-7-F be used for bidirectional data lines like RS-485?

Yes - DLPT05-7-F is unidirectional, but RS-485 protection is implemented using two devices per differential pair: one anode-to-A/cathode-to-V_CC, another anode-to-B/cathode-to-V_CC. This configuration provides symmetrical clamping for both polarities while preserving the 1.9 pF capacitance benefit on each line.

How does DLPT05-7-F compare to polymer-based ESD suppressors?

Unlike polymer ESD suppressors, DLPT05-7-F uses silicon avalanche technology, delivering deterministic clamping voltage (9.8 V), sub-nanosecond response, and stable 1.9 pF capacitance across voltage and temperature - critical for timing-sensitive high-speed interfaces where polymer devices exhibit variable impedance and higher capacitance drift.

Is DLPT05-7-F compatible with lead-free reflow profiles?

Yes - DLPT05-7-F features matte tin-plated leads over Alloy 42 and is qualified for standard lead-free reflow profiles (peak temperature ≤260°C, per JEDEC J-STD-020). Its SOT-23 package and moisture sensitivity level 1 allow direct placement into high-volume automated assembly without baking or special handling.