Compact horizontal mount ceramic trimmer potentiometer JIERR JER805HM-301 with metal glaze resistive element

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Price: Negotiable

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Product Description

Product Overview

The JER805HM series ceramic trimmer potentiometer offers high stability, a compact size, and high precision. Designed with a metal glaze resistive element, these potentiometers feature a rated power of 0.5W and a wide resistance range from 300 to 2M. They are suitable for various applications requiring precise resistance adjustments.

Product Attributes

Brand: JER (implied by product series naming convention)
Series: JER805HM
Resistive Element Material: Metal glaze
Adjustment Type: Trimmer potentiometer
Mounting Style: Horizontal (implied by naming convention 'H')
Standard Packaging: 200 pcs/bag
Certifications: Meets JIS standards (indicated by 'B' for Japanese Standard)

Technical Specifications

Parameter Name	Specification
Rated Power	0.5W
Resistance Range	300 - 2M
Resistance Tolerance	20%
Resistance Change Characteristic	B (Linear)
Max. Operating Voltage	30VAC
Rotary Noise	100mV
Zero Resistance (R1K)	r01, r03 10
Zero Resistance (R1K)	r01, r03
Total Mechanical Travel	270 10
Effective Travel	240 10
Rotational Torque	3mNm ~ 30mNm
Stopping Strength	50mNm
Operating Temperature Range	-30 ~ +85
Solder Heat Resistance (Terminal)	2% within 1 hour after immersion in solder bath at 26010 for 30.5 seconds.
Soldering Condition (Temperature)	26010
Soldering Condition (Time)	Within 3 seconds (total time)
Temperature Coefficient	Within 250PPM/

Nominal Resistance Code Table

Resistance ()	Resistance Code	Resistance ()	Resistance Code
100	101	20000 (20K)	203
200	201	50000 (50K)	503
500	501	100000 (100K)	104
1000 (1K)	102	200000 (200K)	204
2000 (2K)	202	500000 (500K)	504
5000 (5K)	502	1000000 (1M)	105
10000 (10K)	103

Reliability Tests

Test Item	Test Method	Specification
Rotary Life Test	Under no load, move wiper at 90% of effective angle at a speed of once every 6 seconds for 502 cycles.	Resistance change within 10%.
Temperature Characteristic	Under no load, place in a 703 oven for 5 hours.	Resistance change within 3%.
Temperature Cycling	5 cycles of: No load -30 (30 min) Normal Temp/Humidity (15 min) 85 (30 min) Normal Temp/Humidity (15 min). After 5 cycles, place in normal temp/humidity for over 2 hours.	Resistance change within 3%.
Long-term Heat Resistance	Under no load, place in a 703 oven for 50010 hours. After placing in normal temp/humidity for over 2 hours.	Resistance change within 5%.
Damp Heat Resistance	Under no load, place in a 402, 90-95% humidity chamber for 50010 hours. After placing in normal temp/humidity for over 5 hours.	Resistance change within 5%.
Load Life Test	In a 402, 90-95% humidity chamber, apply rated voltage for 1.5 hours, then cut off for 0.5 hours. Repeat this cycle for 50010 hours. After placing in normal temp/humidity for over 5 hours.	Resistance change within 5%.

Product Naming Convention

Component	Description
JER	Series Prefix
805	Model Number
H	Mounting Style (Horizontal)
M	Adjustment Type (Micro Adjustment)
101-105	Resistance Code

Precautions for Use

When performing dip soldering, ensure flux is fully dried to prevent quality degradation. Pay attention to the amount of flux applied.
Do not immerse the semi-adjustable resistor in solvents. Contact us if cleaning is necessary.
When inserting into a PCB or during assembly, avoid applying excessive force to the terminals, center terminal, or wiper to prevent deformation and poor contact. Exercise particular caution with the wiper in open-type models.
Store semi-adjustable resistors away from high/low temperatures, high humidity, and corrosive gases. Pay extra attention to long-term storage.
When storing, be mindful of the stacking pressure on the products.
Implement a First-In, First-Out (FIFO) system for inventory management.