Registration No. 1269
JAXA-QTS-2050/H102D
24 March 2023
Superseding
JAXA-QTS-2050/H102C
Cancelled
24 March 2023

RESISTORS, FIXED, WIRE WOUND,POWER TYPE, CHASSIS MOUNTED,HIGH RELIABILITY, SPACE USE,(RES 40 and 50 NON-INDUCTIVE TYPES)DETAIL SPECIFICATION FOR

Prepared and Established by SEIDEN TECHNO CO., LTD.
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: 27 March 2024

JAXA-QTS-2050/H102D
24 March 2023

JAXA
Parts Specification–i–Page

ASA-8100-H102

Rev.
NCA

Date
10 Nov
2006
20 April
2009

Issuance History
Description
Original

B

15 May2012

Revised to reflect the revision of Seiden Techno Co., Ltd.
Document number: ASA-8100-H102 (revision A)
Revised to reflect the revision of Seiden Techno Co., Ltd.
Document number: ASA-8100-H102 (revision B)

C

22 July
2020

Revised to reflect the revision of Seiden Techno Co., Ltd.
Document number: ASA-8100-H102 (revision C)

D24 Mar.
2023

Revised to reflect the revision of Seiden Techno Co., Ltd
Document number: ASA-8100-H102 (revision D)
The remainder of this page is intentionally left blank.

JAXA-QTS-2050/H102D24 March 2023

JAXA
Parts Specification

Page– ii –ASA-8100-H102Rev.
NCA

Date
10 Nov
2006
20 April
2009

Revision History
Description
Original
Revised in accordance with the revised general specification (JAXA-QTS-2050A,
Appendix H
Table 6: Changed the test method paragraph number.
Table 7: Changed the test method paragraph number.
Table 8: Changed the test method paragraph number.
Table 9: Changed the test method paragraph number.
Table 10: Changed the test method paragraph number.

B

15 May2012

Changed the followings in the Qualification Test (paragraph 4.2) and Thermal
shock [I] and Thermal shock [II] in the Quality Conformance Inspection(paragraph 4.3).
Table 7: Added Note (4)Table 8: Added Note (4)Table 10: Added Note (1).
Paragraph 4.5: Changed the test condition (test can be performed with either ofDC voltage or AC voltage) and added the reason (heat generation during theapplication of DC voltage and AV voltage is equivalent).

C22 July
2020

Cover: Changed corporate name.
Paragraph 4.4 Long-Term Storage
Specified the storage conditions for purchaser.

D24 Mar.

Revised in accordance with the revised general specification, JAXA-QTS-2050G,
Table 4 Added “Mass” to test item of Requirement paragraph H.3.3;
Table 7 Added “Mass” to test item of Requirement paragraph H.3.3;
Table 8 Added “Mass” to test item of Requirement paragraph H.3.3;
Changed the test item title from Dielectric withstanding voltage to Dielectricwithstanding voltage (Atmospheric pressure), changed test method paragraphnumber from H.4.4.4.4 to H.4.4.4.4.1.

2023

JAXA-QTS-2050/H102D24 March 2023

JAXAParts Specification

Page– iii –ASA-8100-H102

Contents
1.

GENERAL .......................................................................................................................... 1
1.1
Scope ......................................................................................................................... 1
1.2
Part Number ............................................................................................................... 1
1.3
Ratings ....................................................................................................................... 1
2. APPLICABLE DOCUMENTS.............................................................................................. 3
3. REQUIREMENTS .............................................................................................................. 3
3.1
Performance ............................................................................................................... 3
4. QUALITY ASSURANCE PROVISIONS .............................................................................. 44.1
In-Process Inspection ................................................................................................. 5
4.2
Qualification Test ........................................................................................................ 54.3
Quality Conformance Inspection ................................................................................. 7
4.4
Long-Term Storage ..................................................................................................... 84.5
Changes of Test and Inspection ................................................................................. 8
5. PREPARATION FOR DELIVERY ....................................................................................... 8
6. NOTE ................................................................................................................................. 8

JAXA
Parts Specification

JAXA-QTS-2050/H102D
24 March 2023

Page–1–ASA-8100-H102

RESISTORS, FIXED, WIRE WOUND,POWER TYPE, CHASSIS MOUNTED,HIGH RELIABILITY, SPACE USE,DETAIL SPECIFICATION FOR(NASDA RES 40 AND RES 50 NON-INDUCTIVE TYPES)

1.

GENERAL

1.1

Scope
This specification establishes the detailed requirements for JAXA-QTS-2050 Appendix H,
the chassis mounted, power type, wire wound, fixed resistors (hereinafter referred to as"resistors") RES 40 and 50 non-inductive types to be used for electronic equipment
installed on spacecraft such as satellites.

1.2

Part Number
The part numbers for the resistors covered in this specification shall be classified by style,resistance tolerance, and nominal resistance shown in Table 1 and assigned as thefollowing example:(Example)

NASDA(1)

RES40
Style
(paragraph H.1.3.1)

F
Resistance tolerance(paragraph H.1.3.2)

1001
Nominal resistance(paragraph H.1.3.3)

Note:(1) “NASDA” indicates the common part for space use and may be abbreviated to “N.”
Table 1. Part Numbers
Item

Applicableparagraph ofJAXA-QTS-2050

ArticleStyle

H.1.3.1

RES40, RES50

Resistance tolerance

H.1.3.2

F (±1%)

Nominal resistance

H.1.3.3(e.g.) 1000…100 Ω (specified by a 4-digits number.)

1.3

Ratings
The ratings are shown in Table 2.

JAXAParts Specification

JAXA-QTS-2050/H102D24 March 2023

–2–Page

ASA-8100-H102
Table 2. Specifications
Requirement
paragraph ofJAXA-QTS-2050

ItemArticle

Operating temperature range

H.3.5.2-55°C to +275°C

Ambient temperature

H.3.5.3

25°C

Derating curve

H.3.5.4

Refer to Figures 1 and 2−

Style
Nominal resistance range (Ω)

H.3.5.1

−

RES40

RES50

Minimum resistance

0.51

0.51

Maximum resistance (Nominal137562

Diameter of the wire: 0.0315 mm)
Rated power (chassis mounted) W(¹)

H.3.5.3−515Rated power (free air)W

H.3.5.3−38Note(1): The chassis dimensions are specified in Table 3.

Table 3. Dimensions of Chassis
Unit: mmLength x width x heightThickness

RES40(152 ± 3) x (101 ± 3) x (51x ± 3)

1.0 ± 0.1

RES50(178 ± 3) x (127 ± 3) x (51x ± 3)

1.0 ± 0.1

Power (W)Style

Area of chassis (cm 2)

Figure 1. Derating Curve with respect to Surface Size of Chassis
Notes: (1) Figure 1 indicates the derating curve with respect to the surface size of chassis when theresistor is installed on the chassis.
(2) The operating ambient temperature is 25°C.

JAXA
Parts Specification

JAXA-QTS-2050/H102D
24 March 2023–3–Page

ASA-8100-H102

Figure 2. Derating Curve
2.

APPLICABLE DOCUMENTS
The applicable documents are as specified in paragraph 2.1 of JAXA-QTS-2050.

3.

REQUIREMENTS
The requirements are as specified in paragraph H.3, Appendix H of JAXA-QTS-2050 and asprovided below.

3.1

Performance
The performance is specified in Table 4.
Table 4. Performance
Item

Materials
Externals, dimensions, massand marking

Requirement
paragraph ofJAXA-QTS-2050
H.3.2
H.3.3

DPA

H.3.4.1

ResistanceH.3.6.1

Resistance-temperature
characteristics

H.3.6.2

Power conditioning
Dielectric withstanding voltage
Insulation resistance
Short-time overload

H.3.6.3
H.3.6.4
H.3.6.5
H.3.6.6

Reactance

H.3.6.7

Terminal strength
Solderability
High frequency vibration
Random vibration
Shock
Heat resistance
Thermal shock [I]H.3.7.1
H.3.7.2
H.3.8.1.1
H.3.8.1.2
H.3.8.2
H.3.8.3
H.3.8.4.1

Performance
As specified in Appendix H of JAXA-QTS-2050A
As specified in Figure 3 and Table 5
Shall be in accordance with the requirements specified in thequality conformance program
Within the resistance Tolerance
Resistance
10-6/°C
Less than 1 Ω±1001 Ω to 19.60Ω±5020 Ω as a minimum±30
Allowable resistance change ± (0.2% + 0.05Ω)Allowable resistance change ± (0.2% + 0.05Ω)10,000MΩ as a minimum
Allowable resistance change ± (0.3% + 0.05Ω)Series inductance
Parallel capacitance
0.5μH5ρF
Allowable resistance change ± (0.2% + 0.05Ω)Flat part of the terminal: 95% as a minimum
Allowable resistance change ± (0.2% + 0.05Ω)Allowable resistance change ± (0.2% + 0.05Ω)Allowable resistance change ± (0.2% + 0.05Ω)Allowable resistance change ± (0.5% + 0.05Ω)Allowable resistance change ± (0.3% + 0.05Ω)JAXA
Parts Specification

JAXA-QTS-2050/H102D
24 March 2023–4–Page

ASA-8100-H102
Table 4. Performance (Continued)

Thermal shock [II]Requirement
paragraph of
JAXA-QTS-2050
H.3.8.4.2

Moisture resistance

H.3.8.5

Resistance to solvents
Low temperature storage
Stability

H.3.8.6
H.3.8.7
H.3.8.8

LifeH.3.9.1

ItemPerformance
Allowable resistance change ± (0.75% + 0.05Ω)Allowable resistance change ± (0.5% + 0.05Ω)Insulation Resistance: 1,000MΩ minimum
There shall be no defects with the marking
Allowable resistance change ± (0.3% + 0.05Ω)Allowable resistance change ± (1.0% + 0.05Ω)2,000 hours ±(1.0% + 0.05Ω)Allowable resistance change
4,000 hours ±(1.0% + 0.05Ω)Figure 3. Construction and Dimensions

Table 5. Dimensions, Marking, and Mass
StyleDimensions mm

A ±1.6B ±0.3C ±0.8D ±0.3E ±1.6F ±1.6
G ±1.6
H ±0.8J ±0.8K ±0.1
L ±0.8M ±1.6
N ±0.8P ±0.1
Q ±0.1
 0 .5R0

Mass g (maximum)
Marking(Minimum requirement)

RES40
28.6
12.5
2.0
11.3
15.2
6.8
8.5
6.2
16.4
2.4
8.1
3.4
1.7
1.3
1.5

RES50
49.2
19.8
4.4
18.3
27.0
11.1
13.5
9.9
27.8
3.2
14.3
7.1
2.4
2.2
2.0

2.2

3.6

3.3

16.5

RES40
F1001 SEF 0634(1)RES50
F1001 SEF 0634(1)Note (1) SEF stands for Seidentechno Co., LTD and the number indicates the year and week when theproduct was manufactured.

JAXA-QTS-2050/H102D
24 March 2023

JAXA
Parts Specification–5–Page

ASA-8100-H102

4.

QUALITY ASSURANCE PROVISIONSThe quality assurance provisions are as specified in paragraph H.4 of JAXA-QTS-2050 andas provided below.

4.1

In-Process Inspection
The In-process inspection shall be performed in accordance with paragraph 4.3 of JAXAQTS-2050. Specifically, inspection items specified in Table 6 shall be performed.
Table 6. In-Process Inspection
Requirement
paragraph ofJAXA-QTS-2050

Test method
paragraph ofJAXA-QTS-2050

Number of samples

H.3.3

H.4.4.2

100%

Spot welding−−100%

Dielectric withstanding voltage−−100%

Resistance

−

−

100%

Item
Externals and dimensions

4.2

Qualification Test
The qualification Test shall be performed in accordance with paragraph H.4.1, Appendix H
of JAXA-QTS-2050. Specifically, test items specified in Table 7 shall be performed.

JAXA-QTS-2050/H102D24 March 2023

JAXA
Parts Specification–6–Page

ASA-8100-H102
Table 7. Qualification Test
Test

Criteria for Pass/FailGroupOrderItemI112112345678910

Externals, dimensions, mass and marking(2)1Shock2

High frequency vibration

3

Thermal shock [II](4)IAIBIIIII

Power conditioning
Resistance
DPA
Reactance
Resistance-temperature characteristics
Heat resistanceLow temperature storage
Dielectric withstanding voltage
Insulation resistance
Thermal shock [I](4)Short-time overload
Moisture resistanceTerminal strength

Requirement
paragraph

Test method
paragraph

H.3.3
H.3.6.3
H.3.6.1
H.3.4.1
H.3.6.7
H.3.6.2
H.3.8.3
H.3.8.7
H.3.6.4
H.3.6.5
H.3.8.4.1
H.3.6.6
H.3.8.5
H.3.7.1
H.3.8.2

H.4.4.2
H.4.4.4.3
H.4.4.4.1
H.4.4.3.1
H.4.4.4.7
H.4.4.4.2
H.4.4.6.3
H.4.4.6.7
H.4.4.4.4
H.4.4.4.5
H.4.4.6.4.1
H.4.4.4.6
H.4.4.6.5
H.4.4.5.1
H.4.4.6.2

H.3.8.1.1

H.4.4.6.1.1

H.3.8.4.2

H.4.4.6.4.2

Number of samples

No. ofdefects
allowed (1)

100%

02
12 Highest
resistance024
12 1Ω orlowestresistancewhichever isgreater.

2020
IVV

VI

VII-

1

1Random vibration

LifeH.3.8.1.2

H.3.9.1

H.4.4.6.1.2

H.4.4.7.1

1

Stability

H.3.8.8

H.4.4.6.8

121

Solderability
Resistance to solvents
Materials

H.3.7.2
H.3.8.6
H.3.2

H.4.4.5.2
H.4.4.6.6-10 Highest
resistance
10 1Ω orlowestresistancewhichever isgreater.
10 Highest
resistance
10 1Ω orlowestresistancewhichever isgreater.

77 Highest
resistance
77 I KΩ231 77 1Ω orlowestresistancewhichever isgreater.

27

9 Highest
resistance
9 I KΩ
9 1Ω orlowestresistancewhichever isgreater.
10 (Optional
resistance)

1010(3 )Notes: (1) Even if a sample failed multiple test items in the same test group, the number of defects shall becounted as one.
(2) For dimensions and mass, use “JIS Z 9015-1 General Inspection Level II” AQL 1.0%.
(3) Submit data which proves that the materials satisfy the design specification.

JAXA-QTS-2050/H102D
24 March 2023

JAXA
Parts Specification–7–Page

ASA-8100-H102(4) The load condition shall be DC voltage or AC voltage equivalent of 50% of the rated power.

4.3

Quality Conformance Inspection
The quality conformance inspection shall be performed in accordance with paragraph
H.4.2 of JAXA-QTS-2050. Specifically, inspection items specified in Tables 8, 9 and 10
shall be performed.
Table 8. Quality Conformance Inspection (Group A)
TestRequirement
paragraph

Test method
paragraph

Power conditioning

H.3.6.3

H.4.4.4.3

ResistanceH.3.6.1

H.4.4.4.1

Externals, dimensions, massand marking(3)
DPA

H.3.3

H.4.4.2

H.3.4.1

H.4.4.3.1

Reactance

H.3.6.7

H.4.4.4.7

Resistance-temperature
characteristics
Dielectric withstanding voltage(atmospheric pressure)
Insulation resistanceH.3.6.2H.4.4.4.2

H.3.6.4

H.4.4.4.4.1

H.3.6.5

H.4.4.4.5

Thermal shock [I](4)H.3.8.4.1

H.4.4.6.4.1

Group Order

121A1
A2A3(1)1
12
3A4(1)

45ItemCriteria for Pass/FailNo. of defects
samples
allowed (2)Number of

100%

020

100Notes (1) Sampling method for Groups A3 and A4 shall be constant sampling. Samples for Group A4 shallbe selected from those of the highest resistance.
(2) Even if a sample failed multiple test items in the same test group, the number of defects shall becounted as one.
(3) For dimensions and mass, use “JIS Z 9015-1 General Inspection Level II” AQL 1.0%.
(4) The load condition shall be DC voltage or AC voltage equivalent of 50% of the rated power.

Table 9. Quality Conformance Inspection (Group B)
Test
Group

B1

B2
B3
B4

Order

123
4
51
1
1
2

Item

Criteria for Pass/FailNo. of defects
samples
allowedRequirement Test method
Number ofparagraphparagraph

Heat resistance

H.3.8.3

H.4.4.6.3

Low temperature storage

H.3.8.7

H.4.4.6.7

Short-time overload

H.3.6.6H.4.4.4.6

Moisture resistance

H.3.8.5

H.4.4.6.5

Terminal strength

H.3.7.1

H.4.4.5.1

Life

H.3.9.1

Stability

100

H4.4.7.1

100

H.3.8.8

H.4.4.6.8

100

Solderability

H.3.7.2

H.4.4.5.2

Resistance to solvents

H.3.8.6

H.4.4.6.6

80

JAXA-QTS-2050/H102D24 March 2023

JAXA
Parts Specification–8–Page

ASA-8100-H102
Table 10. Quality Conformance Inspection (Group C)
TestGroup OrderC1C2112
3

Item

Random vibration
Shock

Criteria for Pass/FailRequirements Test method
Number ofNo. of defects
paragraphparagraphsamples
allowedH.3.8.1.2
H.4.4.6.1.2
100
H.3.8.2

H.4.4.6.2

High frequency vibration

H.3.8.1.1

H.4.4.6.1.1

Thermal shock [II](1)

H.3.8.4.2

H.4.4.6.4.2

100

Note: (1) The load condition shall be DC voltage or DC voltage equivalent of 50% of the rated power .

4.4Long-Term Storage
Long-term storage shall be in accordance with paragraph 4.7 of JAXA-QTS-2050.
The products shall be stored at room temperature (15 to 35°C) and at the normal humidity(45 to 75%RH) in the package provided by the manufacturer. The products shall not bestored directly on the floor. It is desirable that the resistors stored more than 12 months
after delivery are submitted to re-Inspection performed by the manufacturer.

4.5

Changes of Test and Inspection
Change the requirements for Thermal shock [I] and Thermal Shock [II] as follows.
a) Changed content: Thermal shock tests can be performed using either of DC voltage
or AC voltage though it is specified as “DC voltage equivalent of50% of the rated power” in JAXA-QTS-2050, Appendix H.
b) Reason for change: There is no difference between DC voltage and AC voltage interms of test condition as the heat generation during theapplication of DC voltage and AC voltage to the same productwith the same load factor is equivalent.

5.

PREPARATION FOR DELIVERY
Preparation for delivery shall be in accordance with paragraph 5 of JAXA-QTS-2050.

6.

NOTE
Refer to the paragraph 6 of JAXA-QTS-2050.