NXP Semiconductors PRLL5817,115

Overview

PRLL5817,115 from Nexperia is a Schottky barrier diode in a hermetically sealed glass SOD87 surface-mount package, rated for 20 V continuous reverse voltage, 1 A average forward current at 60 °C ambient, and 450 mV forward voltage at 1 A. It features fast recovery time, low switching losses, and guard ring protection for robustness in low-power SMPS and polarity protection circuits.

For engineers reviewing the PRLL5817,115 datasheet, PRLL5817,115 pinout, PRLL5817,115 application, or PRLL5817,115 equivalent, key selection criteria include its 20 V V_R, 1 A I_F(AV), 450 mV V_F @ 1 A, SOD87 package thermal resistance of 150 K/W, and suitability for space-constrained rectification where low forward drop and fast switching are critical.

Technical Context

The PRLL5817,115 employs planar Schottky barrier technology with Implotec™ hermetic glass encapsulation, enabling stable performance up to 125 °C junction temperature. Its guard ring structure prevents edge breakdown under high electric field stress.

Designed for low-loss DC-DC conversion stages, it delivers 320 mV forward voltage at 0.1 A and maintains ≤750 mV up to 3 A transient surge, with reverse leakage limited to 1 mA at 20 V and 25 °C - supporting efficient, thermally stable operation in compact power rails.

Key Specifications

Pinout & Package

SOD87 hermetically sealed glass surface-mount package with two terminals: anode and cathode. Cathode identified by band marking per Fig.1 and outline drawing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Compared with RB520S-30T1G and SS12HE3/5BT, the PRLL5817,115 uniquely balances 1 A current capability, 20 V rating, and SOD87's hermetic reliability in a mid-size SMD package - making it optimal for industrial and automotive-adjacent power interfaces where moisture resistance and thermal stability are prioritized over minimal footprint or extreme surge rating.

Availability

PRLL5817,115 is available at Aetrix Electronics and suitable for low-power switched-mode power supplies, polarity protection circuits, and rectification in industrial sensor nodes requiring stable component supply and long-lifecycle support.

Supply support for PRLL5817,115 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

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, consumer, and wearable markets with high-volume, high-reliability components.

The PRLL5817,115 belongs to Nexperia's legacy Schottky diode portfolio developed for space-efficient, thermally robust rectification and protection in cost-sensitive power management systems.

FAQ

What is the maximum junction temperature specification for PRLL5817,115?

The PRLL5817,115 has a maximum junction temperature (T_j) of 125 °C, as defined in the Absolute Maximum Ratings table. This value governs thermal design margins - for example, at 1 A average forward current and 60 °C ambient, the device reaches ~115 °C junction temperature assuming standard SOD87 mounting conditions and R_{th j-a} = 150 K/W. Exceeding 125 °C risks permanent degradation of the Schottky junction.

Does PRLL5817,115 have a specified reverse recovery time (t_rr)?

The PRLL5817,115 datasheet does not list a numerical t_rr value, but explicitly states "fast recovery time" as a feature and confirms Schottky barrier construction - which inherently eliminates minority-carrier storage delay. Its behavior is characterized by low Q_rr and absence of tail current, making it suitable for high-frequency switching up to several MHz without snubbing.

What does the marking code '9' indicate on PRLL5817,115?

The marking code '9' laser-etched on the cathode end of the PRLL5817,115 identifies the device as part of the PRLL5817 family (20 V variant). Per the datasheet marking table, this single-digit code distinguishes PRLL5817, PRLL5818, and PRLL5819 - all sharing the same '9' mark but differing in reverse voltage rating and forward voltage characteristics.

Is PRLL5817,115 suitable for automotive applications?

The PRLL5817,115 is not AEC-Q101 qualified and lacks automotive-grade screening or extended temperature validation beyond its 125 °C T_{j max}. While used in some automotive-adjacent industrial modules, Nexperia positions this part for commercial and industrial applications - not safety-critical or under-hood automotive systems. For such use, PRLL5817,115 requires full system-level qualification by the end customer.

How does the SOD87 package of PRLL5817,115 compare thermally to SMA (DO-214AC)?

The SOD87 package of PRLL5817,115 has a junction-to-ambient thermal resistance (R_{th j-a}) of 150 K/W under standard mounting, versus ~120 K/W for SMA packages like SS12HE3/5BT. This means PRLL5817,115 runs ~30 °C hotter at the same power dissipation - requiring careful copper pour design. However, its hermetic glass seal offers superior long-term moisture resistance compared to plastic SMA packages.