A: In 99% of cases, it is a 1000 pF ceramic capacitor. However, some obsolete Japanese transistors (e.g., 2SC series) used a "9E" prefix. Always examine the component: if it is beige/black and non-polar, it’s a capacitor. If it is a black plastic 3-lead device, check for "9E 102" as a date code, not a part number.
The 9E102 is ideal for applications requiring precise, repeatable time delays without complex clocking or microcontrollers.
When reading the datasheet, pay attention to:
Many large manufacturers (like GE, Murata, TDK, or Bourns) use custom marking codes. The "9E102" could be an in-house coding for:
What to check: Look at the physical component. Is there a logo (circle, square, letters like "M", "T", "P") next to the number? That will help identify the real manufacturer.
Q1: Is the 9E102 a standard logic gate?
No. It is a delay line—a specialized IC that propagates a logic signal with a fixed time shift. It does not perform Boolean logic.
Q2: Can I use the 9E102 with 3.3V logic?
Not recommended. The 9E102 is designed for 5V TTL. At 3.3V, delays increase unpredictably, and outputs may not reach valid logic levels. Use a level shifter or choose a modern 3.3V delay line (e.g., 74LVC1GXX series).
Q3: What does “9E102” stand for?
Typically: Series 9E, delay value 102 (ns). Some manufacturers embed date codes or temperature ranges in the marking—check the full label.
Q4: Where can I buy a 9E102 today?
It is obsolete but often available from surplus electronic suppliers (eBOM, Octopart, eBay) or authorized distributors specializing in legacy parts (Rochester Electronics).
Q5: Can I cascade two 9E102s for 204 ns delay?
Yes. Connect the output of the first to the input of the second. Ensure total delay does not exceed your signal’s period.
| Parameter | Value | Conditions | | :--- | :--- | :--- | | Contact Rating | 25mA @ 24V DC | Resistive Load | | Insulation Resistance | 100 MΩ Min | 100V DC | | Contact Resistance | 50 mΩ Max | Initial value | | Dielectric Strength | 300V AC (RMS) | 1 Minute | | Current Carrying Capacity | 25 mA Max | |
In the world of electronic components, few identifiers are as cryptic—and as critical—as the alphanumeric code found on a device’s casing. For engineers, hobbyists, and procurement specialists, the term "9E102 datasheet" frequently appears in search logs, yet it is often misunderstood. Is it a transistor? A capacitor? A specific integrated circuit (IC) from a major manufacturer?
The reality is that "9E102" is not a universal standard part number across all brands. Instead, it most commonly refers to a surface-mount ceramic capacitor (typically manufactured by AVX, Murata, or KEMET) or, in some legacy cases, a small-signal switching transistor. However, the predominant and most sought-after interpretation in 2025 is the 9E102 capacitor, specifically a 1000 pF (1 nF), 50V to 100V, X7R or C0G dielectric capacitor in an 0603 or 0805 package.
This article provides a definitive, deep-dive analysis of the 9E102 datasheet, including electrical characteristics, thermal ratings, soldering profiles, equivalent parts, and common application circuits. If you are designing a high-frequency filter, a decoupling network, or troubleshooting a power supply, this guide is for you.
