Rev Date: 10/22/2020

1

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HDM Series

Moisture Resistant Carbon Film Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

Features:

•

Specialized materials, processes and controls ensure a part that is impervious

to moisture

•

Small size with high power density

•

Auto sequencing / insertion capable

•

Low cost replacement in many applications using metal glaze resistors

•

100% RoHS compliant and lead free without exemption

•

Halogen free

•

REACH compliant

Electrical Specifications

Mechanical Specifications

0.126

0.071 ± 0.008

1.102 ± 0.118

0.018 ± 0.002

inches

3.20

1.80 ± 0.20

28.00 ± 3.00

0.45 ± 0.05

mm

0.236 ± 0.012

0.094 ± 0.008

1.102 ± 0.118

0.024 ± 0.001

inches

6.00 ± 0.30

2.40 ± 0.20

28.00 ± 3.00

0.60 ± 0.02

mm

HDM12

Type / Code

Unit

HDM14

A

B

Body Diameter

Body Length

C

Lead Length (Bulk)

D

Lead Diameter

+0.008 / -0

+0.20 / -0

Performance Characteristics

Maximum

Maximum

Type / Code

Working

Overload

Voltage (V)

(1)

Voltage (V)

1%, 2%, 5%

HDM14

0.25

300

600

HDM12

0.5

350

700

Power Rating (W)

@ 70ºC

Ohmic Range (

Ω) and Tolerance

(1) Lesser of

or maximum working voltage.

1 - 2.2M

√ P*R

Test

Performance or Quality Acceptance

Test Condition and Method

R < 100K Ω: -500 ~ +350 ppm/ºC

100K Ω ≤ R < 1 M Ω: -700 ~ 0 ppm/ºC

R ≥ 1 M Ω: -1500 ~ 0 ppm/ºC

Change of resistance

≤ ± (0.75% + 0.05 Ω)

Change of resistance

R < 100K Ω: ≤ ± (3% + 0.05 Ω)

R ≥ 100K Ω: ≤ ± (5% + 0.05 Ω)

Change of resistance

R < 100K Ω: ≤ ± (2% + 0.05 Ω)

R ≥ 100K Ω: ≤ ± (3% + 0.05 Ω)

Change of resistance

≤ ± (20% + 0.05 Ω)

Reference standards: JIS C5201-1, IEC60115-1

Measure resistance (R0) at room temperature (t),

after that, measure again the resistance (R) at

100ºC higher than room temperature.

TCR - Temperature Coefficient of

Resistance

Apply the 2.5 times rated voltage or max overload

voltage whichever is lower for 5 seconds and leave

in room temperature for one hour after test.

Overload (Short Time)

Operating temperature range is -55ºC to +155ºC

121ºC, 2 atm, 98 - 100% R.H.

Apply the rated DC voltage for 100 hours.

Pressure Cooker Bias Test

In the chamber having temperature 40 ± 2ºC and

relative humidity 93 ± 3%, apply one percent of the

power rating, 1.5 hour ON, 0.5 hour OFF for

1000 hours and leave in room temperature for

one hour after test.

Damp heat (Steady State)

At 70 ± 2ºC, apply rated DC voltage 1.5 hour ON,

0.5 hour OFF for 1000 hours and leave in room

temperature for one hour after test.

Load Life

R - R0

10

6

R0

(t + 100) - t

TCR =

x

(ppm/ºC)