9e102 — Datasheet

| Zone | Temperature | Ramp Rate | Time | |------|-------------|-----------|------| | Preheat | 150°C → 200°C | 1–3°C/sec | 60–120 sec | | Soak | 200°C → 245°C | < 3°C/sec | 30–60 sec | | Reflow Peak | 260°C max | — | 10 sec max | | Cooling | → 180°C | -3 to -6°C/sec | — |

Important: Do not exceed 260°C. Hand-soldering with a fine tip (340°C, 2 sec per pad) is acceptable but not recommended for production.

Pair the 9E102 with a ferrite bead to create a pi-filter (C-L-C) for power lines. Example: Input → 10 µF electrolytic → Ferrite bead → 9E102 → Load. This attenuates conducted emissions above 10 MHz.

| Parameter | Symbol | Min | Max | Unit | |-----------|--------|-----|-----|------| | Supply Voltage | Vcc | 0 | 7.0 | V | | Input Voltage | Vin | 0 | Vcc + 0.5 | V | | Output Current (per pin) | Iout | - | 25 | mA | | Operating Temperature | Topr | -40 | +85 | °C | | Storage Temperature | Tstg | -65 | +150 | °C | | Lead Temperature (soldering, 10s) | - | - | 260 | °C |

Before downloading a datasheet, you must understand how to read the marking. The code 9E102 is a shortened, manufacturer-specific marking typically printed on the body of an SMD ceramic capacitor. The breakdown is as follows:

| Symbol | Meaning | Typical Value | |--------|---------|----------------| | 9 | Manufacturer code or voltage/tolerance class (e.g., 9 = 50V or 100V, varies by brand) | 50V (AVX), 100V (Murata) | | E | Dielectric material | X7R or C0G (NP0) | | 102 | Capacitance code (10 × 10² pF) | 1000 pF = 1 nF |

Thus, 9E102 = 1 nF capacitor, with 'E' indicating a stable dielectric, and '9' representing the voltage rating. However, always verify with the specific brand's datasheet—some manufacturers use '9' for tolerance (e.g., ±5%), others for voltage.

Critical Note: Do not confuse this with the 2N3904 transistor variant or the 9E102 optocoupler from discontinued lines. Always check the physical component shape: capacitors are rectangular, brown/tan (X7R) or black (C0G) with no polarity mark.

Feed a noisy signal into the delay line and compare input vs. delayed output using an AND gate. Pulses shorter than 102 ns are rejected.

The 9e102 datasheet does not exist as a standalone document. The string is most likely a marking code for a 1000pF ceramic capacitor from a specific Asian manufacturer (possibly Samsung, Yageo, or Walsin). To proceed:

Final recommendation: Contact the distributor or use a component identifier service (like FindChips or Octopart) with a photo. Without manufacturer context, "9e102" remains ambiguous.

Understanding the BD9E102FJ: The Heart of Modern Power Management

In the world of electronics repair and circuit design, few components are as critical yet overlooked as the DC/DC buck converter. If you’ve spent time looking at laptop motherboards or high-efficiency power supplies lately, you’ve likely come across the 9E102, more formally known in technical circles as the ROHM Semiconductor BD9E102FJ.

This tiny SOP-J8 package is a powerhouse used extensively in brands like Dell, HP, Lenovo, and ASUS for reliable power delivery. Whether you are a hobbyist or a professional technician, understanding its datasheet is key to successful troubleshooting. Key Specifications at a Glance

The BD9E102FJ is a synchronous buck DC/DC converter with integrated power MOSFETs, designed to be both efficient and space-saving. Input Voltage Range: 7.0V to 26V. Output Current: Maximum 1.0A. Switching Frequency: Fixed at 570 kHz (Typ.). Efficiency: Up to 89.6% at 0.7A load. Package: SOP-J8 (Small Outline Package). Adjustable Output: Can be set from 1.0V up to Pinout Configuration 9e102 datasheet

Knowing the pinout is essential when probing a board with a multimeter. According to the ROHM BD9E102FJ Datasheet: BOOT: Connect a 0.1 µF bootstrap capacitor here.

VIN: Power supply input (recommended 10 µF ceramic capacitor).

EN: Enable pin; 2.0V+ turns it on, 0.8V or less enters shutdown. AGND: Ground for control circuits. FB: Feedback pin used to set the output voltage. Common Applications and Failure Symptoms

This IC is a "go-to" for laptop power rails, specifically for VCC_CORE and VDDQ. If you encounter a laptop with no response to the power button or "no fan spin," the 9E102 is a prime suspect. Symptoms of a failing 9E102:

Thermal runaway: The chip feels excessively hot to the touch (above 45°C) within seconds of power application.

Zero Output: Stable 19V at the VIN pin but 0V at the output rails.

Short to Ground: Continuity between VIN and GND pins when unpowered. Pro-Tips for Installation

Replacing an SOP-8 component requires precision. Technicians recommend using a hot air rework station at approximately 250°C to 260°C to avoid lifting traces or delaminating the PCB. Always verify the surrounding MOSFETs for shorts before installing a new 9E102, as a shorted MOSFET will instantly destroy your new controller.

For those looking to source parts, authorized distributors like Digi-Key and Mouser provide verified authentic components, though many repair professionals find success with "Original Brand New" listings on marketplaces like AliExpress when batch codes are provided. BD9E102FJ - uri=media.digikey

■ Adjustable output voltage range: 1.0V to VIN x 0.7V. ■ Maximum output current: 1.0 A (Max.) ■ Switching frequency: 570 kHz (Typ. BD9E102FJ-GE2 ROHM Semiconductor - Mouser Electronics

Table_title: To show similar products, select at least one checkbox Table_content: header: | Product Attribute | Attribute Value | Mouser Electronics BD9E102FJ-EVK-001 ,UsersGuide : Power Management

Given the ambiguity, let's explore possible avenues for finding the information you're seeking:

If you have any additional details or if there's a specific aspect of the datasheet you're trying to understand (e.g., pin configuration, electrical characteristics), providing more context could help in giving a more targeted response.

The 9E102 is a specialized high-performance component, typically categorized as a surface-mount (SMD) power inductor or a specific precision resistor, depending on the manufacturer (such as Taiyo Yuden or Panasonic).

Because this part number is often used within specific industrial power modules or RF circuits, finding a consolidated datasheet can be tricky. Below is a comprehensive breakdown of the technical specifications, features, and applications typically associated with the 9E102 series. 1. Technical Specifications Overview

While exact specs can vary slightly by brand, a standard 9E102 component usually adheres to the following parameters:

Value: 1.0 mH (Millihenries) or 1000 µH (Microhenries) for inductors; or 1k Ohm for resistors (though 102 is most common for inductors in this series). Tolerance: ±10% or ±20% (Standard M or K tolerance).

Package Size: Often found in 1210 (3225 Metric) or 2220 (5650 Metric) surface-mount footprints.

Operating Temperature: -40°C to +125°C (Automotive or Industrial grade).

Current Rating: Typically ranges from 50mA to 150mA depending on the DC resistance (DCR). DCR (Max): 5.0 to 9.0 Ohms. 2. Key Features

The 9E102 is engineered for stability in demanding environments. Its construction usually includes:

High Self-Resonant Frequency (SRF): Ensures the component maintains its inductive properties even at high frequencies without becoming capacitive. | Zone | Temperature | Ramp Rate |

Magnetic Shielding: Many versions feature a ferrite core shielding to minimize Electromagnetic Interference (EMI) with neighboring components on a crowded PCB.

Robust Construction: Designed to withstand reflow soldering temperatures and mechanical vibration, making it ideal for automotive "under-the-hood" or industrial sensor applications.

Low Profile: The SMD design allows for automated "pick-and-place" assembly, reducing manufacturing costs. 3. Typical Applications

You will most commonly find the 9E102 in circuits requiring precise signal filtering or energy storage:

DC-DC Converters: Acts as a filter to smooth out output voltage ripples.

Telecommunications: Used in signal line noise suppression for routers and base stations.

Consumer Electronics: Found in the power management stages of laptops, tablets, and high-end audio equipment.

Automotive Systems: Integrated into infotainment systems and ECU (Engine Control Unit) power filters. 4. Installation and Soldering Guidelines

To ensure the longevity of the 9E102, follow these standard SMD handling procedures:

Solder Profile: Use a lead-free (Pb-Free) reflow profile with a peak temperature not exceeding 260°C.

Moisture Sensitivity: These components are typically rated MSL 1, meaning they have an unlimited floor life at ≤30°C/85% RH, but always check the specific reel packaging.

Cleaning: Compatible with standard aqueous or solvent cleaning processes. 5. Equivalent Parts and Alternatives

If the 9E102 is out of stock, engineers often look for the following series which offer similar footprints and electrical characteristics: Bourns CM322522 Series TDK NLV32 Series Murata LQH32 Series Summary Table Specification Inductance Package SMD 1210 / 3225 Material Ferrite Core Standard RoHS Compliant

Combine the 9E102 with an XOR gate to create a pulse generator. The XOR output remains HIGH for exactly 102 ns after each input edge. Critical Note: Do not confuse this with the

Assuming the 9E102 is a TTL-compatible 5-tap delay line with a total delay of 102 ns, the typical electrical and environmental specifications are: