SIT200 Series

Space Grade Isolation Transformers

The Vanguard Electronics SIT200 Series is a line of high-reliability, space-level isolation transformers designed for demanding aerospace and defense applications. These components are engineered to meet rigorous MIL-PRF-27 specifications, ensuring exceptional performance in extreme conditions.

Compact, low profile, ideal for automatic pick-and-place
Built to meet MIL-PRF-27 specifications
Welded internal connections
Moisture, shock and immersion resistant
Magnetically Shielded
MIL-STD-981 Tested
Custom Designs and Modifications: Available in various sizes and package types.

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Specifications

Name	V-µS	Turns Ratio	Inductance (µH)	DCR MAX (OHMS)	Current MAX (A)	hf:tax:pa_v-us	hf:tax:pa_common-inductance-µh	hf:tax:pa_common-dcr-max-ohms	hf:tax:pa_common-current-max-a	hf:tax:pa_length-inches	hf:tax:pa_width-inches	hf:tax:pa_height-inches	hf:tax:pa_mounting-type
SIT201	60	1:01	6900	0.77	0.65	60	6900	0-77	0-65	0-41	0-41	0-24	smd
SIT201TH	60	1:01	6900	0.77	0.65	60	6900	0-77	0-65	0-41	0-41	0-24	tht
SIT202	60	01:01.1	6900	0.77, 0.85	0.65	60	6900	0-77 0-85	0-65	0-41	0-41	0-24	smd
SIT202TH	60	01:01.1	6900	0.77, 0.85	0.65	60	6900	0-77 0-85	0-65	0-41	0-41	0-24	tht
SIT203	60	01:01.2	6900	0.77, 0.92	0.65	60	6900	0-77 0-92	0-65	0-41	0-41	0-24	smd
SIT203TH	60	01:01.2	6900	0.77, 0.92	0.65	60	6900	0-77 0-92	0-65	0-41	0-41	0-24	tht
SIT204	60	1:02	6900	0.77, 3.1	0.65	60	6900	0-77 3-1	0-65	0-41	0-41	0-24	smd
SIT204TH	60	1:02	6900	0.77, 3.1	0.65	60	6900	0-77 3-1	0-65	0-41	0-41	0-24	tht
SIT205	60	01:00.5	6900	0.39, 0.77	0.65	60	6900	0-39 0-77	0-65	0-41	0-41	0-24	smd
SIT205TH	60	01:00.5	6900	0.39, 0.77	0.65	60	6900	0-39 0-77	0-65	0-41	0-41	0-24	tht
SIT206	40	1:01	2900	0.51	0.79	40	2900	0-51	0-79	0-41	0-41	0-24	smd
SIT206TH	40	1:01	2900	0.51	0.79	40	2900	0-51	0-79	0-41	0-41	0-24	tht
SIT207	40	01:01.1	2900	0.51, 0.56	0.79	40	2900	0-51 0-56	0-79	0-41	0-41	0-24	smd
SIT207TH	40	01:01.1	2900	0.51, 0.56	0.79	40	2900	0-51 0-56	0-79	0-41	0-41	0-24	tht
SIT208	40	01:01.2	2900	0.51, 0.62	0.79	40	2900	0-51 0-62	0-79	0-41	0-41	0-24	smd
SIT208TH	40	01:01.2	2900	0.51, 0.62	0.79	40	2900	0-51 0-62	0-79	0-41	0-41	0-24	tht
SIT209	40	1:02	2900	0.51, 1.1	0.79	40	2900	0-51 1-1	0-79	0-41	0-41	0-24	smd
SIT209TH	40	1:02	2900	0.51, 1.1	0.79	40	2900	0-51 1-1	0-79	0-41	0-41	0-24	tht
SIT210	40	01:00.5	2900	0.3, 0.51	0.79	40	2900	0-3 0-51	0-79	0-41	0-41	0-24	smd
SIT210TH	40	01:00.5	2900	0.3, 0.51	0.79	40	2900	0-3 0-51	0-79	0-41	0-41	0-24	tht
SIT211	20	1:01	810	0.27	1.1	20	810	0-27	1-1	0-41	0-41	0-24	smd
SIT211TH	20	1:01	810	0.27	1.1	20	810	0-27	1-1	0-41	0-41	0-24	tht
SIT212	20	01:01.1	810	0.27, 0.3	1.1	20	810	0-27 0-3	1-1	0-41	0-41	0-24	smd
SIT212TH	20	01:01.1	810	0.27, 0.3	1.1	20	810	0-27 0-3	1-1	0-41	0-41	0-24	tht
SIT213	20	01:01.2	810	0.27, 0.32	1.1	20	810	0-27 0-32	1-1	0-41	0-41	0-24	smd
SIT213TH	20	01:01.2	810	0.27, 0.32	1.1	20	810	0-27 0-32	1-1	0-41	0-41	0-24	tht
SIT214	20	1:02	810	0.27, 0.55	1.1	20	810	0-27 0-55	1-1	0-41	0-41	0-24	smd
SIT214TH	20	1:02	810	0.27, 0.55	1.1	20	810	0-27 0-55	1-1	0-41	0-41	0-24	tht
SIT215	20	01:00.5	810	0.15, 0.27	1.1	20	810	0-15 0-27	1-1	0-41	0-41	0-24	smd
SIT215TH	20	01:00.5	810	0.15, 0.27	1.1	20	810	0-15 0-27	1-1	0-41	0-41	0-24	tht
SIT221	60	1:01	970	0.77	0.78	60	970	0-77	0-78	0-41	0-41	0-24	smd
SIT221TH	60	1:01	970	0.77	0.78	60	970	0-77	0-78	0-41	0-41	0-24	tht
SIT222	60	01:01.1	970	0.77, 0.85	0.78	60	970	0-77 0-85	0-78	0-41	0-41	0-24	smd
SIT222TH	60	01:01.1	970	0.77, 0.85	0.78	60	970	0-77 0-85	0-78	0-41	0-41	0-24	tht
SIT223	60	01:01.2	970	0.77, 0.92	0.78	60	970	0-77 0-92	0-78	0-41	0-41	0-24	smd
SIT223TH	60	01:01.2	970	0.77, 0.92	0.78	60	970	0-77 0-92	0-78	0-41	0-41	0-24	tht
SIT224	60	1:02	970	0.77, 3.1	0.78	60	970	0-77 3-1	0-78	0-41	0-41	0-24	smd
SIT224TH	60	1:02	970	0.77, 3.1	0.78	60	970	0-77 3-1	0-78	0-41	0-41	0-24	tht
SIT225	60	01:00.5	970	0.4, 0.77	0.78	60	970	0-4 0-77	0-78	0-41	0-41	0-24	smd
SIT225TH	60	01:00.5	970	0.4, 0.77	0.78	60	970	0-4 0-77	0-78	0-41	0-41	0-24	tht
SIT226	40	1:01	420	0.51	0.96	40	420	0-51	0-96	0-41	0-41	0-24	smd
SIT226TH	40	1:01	420	0.51	0.96	40	420	0-51	0-96	0-41	0-41	0-24	tht
SIT227	40	01:01.1	420	0.51, 0.56	0.96	40	420	0-51 0-56	0-96	0-41	0-41	0-24	smd
SIT227TH	40	01:01.1	420	0.51, 0.56	0.96	40	420	0-51 0-56	0-96	0-41	0-41	0-24	tht
SIT228	40	01:01.2	420	0.51, 0.62	0.96	40	420	0-51 0-62	0-96	0-41	0-41	0-24	smd
SIT228TH	40	01:01.2	420	0.51, 0.62	0.96	40	420	0-51 0-62	0-96	0-41	0-41	0-24	tht
SIT229	40	1:02	420	0.51, 1.1	0.96	40	420	0-51 1-1	0-96	0-41	0-41	0-24	smd
SIT229TH	40	1:02	420	0.51, 1.1	0.96	40	420	0-51 1-1	0-96	0-41	0-41	0-24	tht
SIT230	40	01:00.5	420	0.3, 0.51	0.96	40	420	0-3 0-51	0-96	0-41	0-41	0-24	smd
SIT230TH	40	01:00.5	420	0.3, 0.51	0.96	40	420	0-3 0-51	0-96	0-41	0-41	0-24	tht
SIT231	20	1:01	120	0.27	1.3	20	120	0-27	1-3	0-41	0-41	0-24	smd
SIT231TH	20	1:01	120	0.27	1.3	20	120	0-27	1-3	0-41	0-41	0-24	tht
SIT232	20	01:01.1	120	0.27, 0.3	1.3	20	120	0-27 0-3	1-3	0-41	0-41	0-24	smd
SIT232TH	20	01:01.1	120	0.27, 0.3	1.3	20	120	0-27 0-3	1-3	0-41	0-41	0-24	tht
SIT233	20	01:01.2	120	0.27, 0.32	1.3	20	120	0-27 0-32	1-3	0-41	0-41	0-24	smd
SIT233TH	20	01:01.2	120	0.27, 0.32	1.3	20	120	0-27 0-32	1-3	0-41	0-41	0-24	tht
SIT234	20	1:02	120	0.27, 0.55	1.3	20	120	0-27 0-55	1-3	0-41	0-41	0-24	smd
SIT234TH	20	1:02	120	0.27, 0.55	1.3	20	120	0-27 0-55	1-3	0-41	0-41	0-24	tht
SIT235	20	01:00.5	120	0.16, 0.27	1.3	20	120	0-16 0-27	1-3	0-41	0-41	0-24	smd
SIT235TH	20	01:00.5	120	0.16, 0.27	1.3	20	120	0-16 0-27	1-3	0-41	0-41	0-24	tht

Electrical Specifications

Operating Temperature: -55°C to +125°C
Storage Temperature: -60°C to +130°C
Temperature Rise @ 90°C: <30°C
Dielectric Withstanding Voltage: 300 VAC
Resistance to Soldering Heat: 265°C for 10 secs
NASA outgassing compliant per ASTM E595 (TML <1%, CVCM <0.10%)
Different electrical values available upon request

Package Dimensions

Package Types: Thru-Hole and Gullwing packages available.

Markings: Laser or ink markings available.

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SIT200 Series

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