Registration No. 1271
NASDA-QTS-39007B/102A
29 May 2023
Superseding
NASDA-QTS-39007B/102
Cancelled
29 May 2023

RESISTORS, FIXED, WIRE WOUND (POWER TYPE),ESTABLISHED RELIABILITY,SPACE USE,
NASDA STYLE RWS80, RWS81, RWS84, RWS89, RWS83
DETAIL SPECIFICATION FOR

Issued by Japan Aerospace Exploration Agency

This document is the English version of JAXA QTS/ADS which was originally written andauthorized in Japanese and carefully translated into English for international users. If anyquestion arises as to the context or detailed description, it is strongly recommended to verify
against the latest official Japanese version.
The release date of the English version of this specification: 26 July 2024.

NASDA-QTS-39007B/102A
29 May 2023

Rev.
NCDate30 Oct.
1998

A

29 May2023

NASDA
Parts Specification

Page–i–

Revision history
Description
OriginalHeader
Deleted Issue date of the first edition (revision NC) at upper right corner of thepage (specified at Revision history)
Cover page
Changed the corporate name from National Space Development Agency ofJapan to the Japan Aerospace Exploration Agency.
Revision history
Newly Created.
Paragraph 5, Table 4
Added a note (ж) on Resistance to solvents.
The remainder of this page is intentionally left blank.

NASDA-QTS-39007B/102A
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NASDA
Parts Specification

Page– ii –Contents
1.
2.
3.
4.
5.
6.
7.

SCOPE ................................................................................................................................. 1
PART NUMBER .................................................................................................................... 1
RATINGS .............................................................................................................................. 2
PRODUCT INSPECTION ...................................................................................................... 3
PERFORMANCE .................................................................................................................. 4
QUALITY ASSURANCE PROVISIONS ................................................................................. 6
NOTES.................................................................................................................................. 6

NASDA
Parts Specification

NASDA-QTS-39007B/102A
29 May 2023

Page

–1–RESISTORS, FIXED, WIRE WOUND (POWER TYPE),ESTABLISHED RELIABILITY, SPACE USE,NASDA STYLE RWS80, RWS81, RWS84, RWS89, RWS83
DETAIL SPECIFICATION FOR

1.

SCOPE
This specification establishes the detail requirements and quality assurance requirements
for RWS80, 81, 84, 89 and 83 styles, established reliability, power type, wire wound, fixedresistors which are qualified for space use by the Japan Aerospace Exploration Agency.

2.

PART NUMBER
The part number of resistors covered by this specification is as shown in Table 1.
TABLE 1. Part Number

Item

Applicableparagraph ofNASDA-QTS39007

Specification

Part number

1.3

Example: NASDA RWS80 S 49R9F AStyle

1.3.1

RWS80, RWS81, RWS84, RWS89, RWS83

Terminal type

1.3.2

S, W

Resistance

1.3.3

Example: 1000 = 100(Identified by a four-digit number.)Resistance tolerance

1.3.4

D (0.5%), F (1.0%), G (2.0%), J (5.0%)

Identification symbol

1.3.5

ANASDA
Parts Specification

NASDA-QTS-39007B/102A
29 May 2023

3.

–2–Page

RATINGS
The ratings are as shown in Table 2.
TABLE 2. Ratings
Requirement
paragraph ofNASDA-QTS39007

Ratings

Operatingtemperature
range (C)

3.5.2

-55 to +275

Rated
ambient
temperature(C)

3.5.3

25

Deratingcurve3.5.4

As specified in Figure 1.


3.5.1

RWS80

RWS81

RWS84

RWS89

RWS83

Resistancetolerance
symbol

DF,G, JD

F,G, JD

F,G, JD

F,G, JD

F,G, J

Minimum
resistance

0.499

0.1

0.499

0.1

0.499

0.1

0.499

0.1

0.499

0.1

Maximum
resistanceNominalresistance
range ()Power rating
(W)

3.5.3

(1)

Style

1210

464

12400

3570

7000

360

200

3000

950

1800

2

1735(2)Item

Notes:(1) Minimum wire diameter of 0.025mm(2) Minimum wire diameter of 0.04mm“Minimum wire diameter” means the minimum diameter of resistance wires which are used for
manufacturing the resistors of the specified maximum resistance. For example, the resistancewire of 0.025mm diameter or larger shall be used for the resistors of 1.21k  resistance or less.
The resistance wire of 0.04mm diameter or larger shall be used for the resistors of 360 or less.

NASDA-QTS-39007B/102A
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NASDA
Parts Specification

Page–3–

FIGURE 1. Load Derating Curve

4.

PRODUCT INSPECTION
The visual, construction, physical dimensions and mass shall be in accordance withparagraph 3.4 of NASDA-QTS-39007, and Figure 2 and Table 3 of this specification.

Any construction other than that specified below may be accepted, provided that thedimension requirements shall be satisfied.

FIGURE 2. Construction and Dimensions

NASDA-QTS-39007B/102A
29 May 2023

NASDA
Parts Specification–4–Page

TABLE 3. Mass and Marking
Style

RWS80

RWS81

RWS84

RWS89

RWS83

D

2.40.8

2.20.5

7.90.8

4.80.8

6.50.8

L

10.30.8

6.40.8

22.21.6

14.21.6

18.51.6

d0.650.05

0.50.05

1.00.05

0.80.05

1.00.05

Mass (g)1 or less

0.35 orless

5 or less3 or less4 or lessExample of marking

XXX(1)RWS80
49R9FS
9811
XXX(2)

49R9
XXX(1) F1
XXX (2)

XXX(1)RWS84
49R9FS
9811
XXX(2)XXX(1)RWS89
49R9FS
9811
XXX(2)XXX(1)RWS83
49R9FS
9811
XXX(2)

Dimensions (mm)Note (1): “XXX” – abbreviation of manufacturer name or trademark
Note (2): “XXX” – Identification symbol

5.

PERFORMANCE
The performance shall comply with paragraph 3 of NASDA-QTS-39007 and Table 4 of thisspecification.
TABLE 4. Performance

No.

Item

Test Method
Paragraph ofNASDA-QTS39007

Performance1

Voltage aging

4.7.2

Allowable resistance change: (0.2% + 0.05)2

Resistance

4.7.3

Within the specified resistance tolerance

3

Product inspection

4.7.4

As specified in Figure 2 and Table 3.

4

DPA

4.7.5

5

Solderability

4.7.6

6

Resistance to solvents

4.7.7(ж)

The conditions specified in the reliability
assurance program shall be satisfied.
At least 95% of the surface shall be covered
with new solder.
There shall be no abnormality of protective
coating and marking.

7Thermal shock (I)4.7.8.1

Allowable resistance change: (0.2% + 0.05)8Thermal shock (II)4.7.8.2

Allowable resistance change: (0.5% + 0.05)NASDA-QTS-39007B/102A
29 May 2023

NASDA
Parts Specification–5–Page

TABLE 4. Performance (continued)

No.

Item

Test Method
Paragraph ofNASDA-QTS39007

Resistance-temperature
characteristicPerformance

Resistanceppm/C0.1 or more and less+650

than 0.499
94.7.90.499 or more and less+400

than 150

1 or more and lessthan 102010 or more
10

Low temperature storage4.7.10

Allowable resistance change: (0.1% + 0.05)11

Short time overload

4.7.11

Allowable resistance change: (0.2% + 0.05)Allowable resistance change: (0.1% + 0.05)Dielectric withstanding1213

4.7.12

voltage

Leakage current: 500A or lessInsulation resistance

4.7.13

Moisture resistance

1000M or more
Moisture resistance
Allowable resistance change: (0.2% + 0.05)14

4.7.14

Dielectric withstanding voltage
Allowable resistance change: (0.1% + 0.05)Insulation resistance: 100M  or more

15

Terminal strength

4.7.15

Allowable resistance change: (0.1% + 0.05)

16

Shock

4.7.16

Allowable resistance change: (0.1% + 0.05)17High frequency vibration

4.7.17.1

Allowable resistance change: (0.1% + 0.05)18

Random vibration

4.7.17.2

Allowable resistance change: (0.1% + 0.05)

Life
19
20

4.7.18

Stability

4.7.19Allowable

2000 hours: (0.5% + 0.05)resistance change

4000 hours: (0.1% + 0.05)Allowable resistance change: (0.5% + 0.05)Note: (ж) The solvent solutions used in this test shall exclude the following .
A mixture consisting of the following:
1. Forty-two parts by volume water, 1 megohm-cm minimum resistivity.
2. One part by volume of propylene glycol monomethyl ether (glycol ether PM, 1-methoxy-2propanol).
3. One part by volume of monoethanolamine.

NASDA-QTS-39007B/102A
29 May 2023
6.

NASDA
Parts Specification

Page–6–QUALITY ASSURANCE PROVISIONSThe quality assurance provisions shall be in accordance with paragraph 4 of NASDA-QTS39007.

7.

NOTES
Refer to the paragraph 6 of NASDA-QTS-39007 or application data sheet for notes on theresistors.