SIT100 Series

Space Grade Isolation Transformers

The Vanguard Electronics SIT100 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
SIT101	30	1:01	5300	1.5	0.31	30	5300	1-5	0-31	0-26	0-26	0-23	smd
SIT101TH	30	1:01	5300	1.5	0.31	30	5300	1-5	0-31	0-26	0-26	0-23	tht
SIT102	30	01:01.1	5300	1.5, 2.2	0.31	30	5300	1-5 2-2	0-31	0-26	0-26	0-23	smd
SIT102TH	30	01:01.1	5300	1.5, 2.2	0.31	30	5300	1-5 2-2	0-31	0-26	0-26	0-23	tht
SIT103	30	01:01.2	5300	1.5, 2.4	0.31	30	5300	1-5 2-4	0-31	0-26	0-26	0-23	smd
SIT103TH	30	01:01.2	5300	1.5, 2.4	0.31	30	5300	1-5 2-4	0-31	0-26	0-26	0-23	tht
SIT104	30	1:02	5300	1.5, 3.1	0.31	30	5300	1-5 3-1	0-31	0-26	0-26	0-23	smd
SIT104TH	30	1:02	5300	1.5, 3.1	0.31	30	5300	1-5 3-1	0-31	0-26	0-26	0-23	tht
SIT105	30	01:00.5	5300	0.72, 1.5	0.31	30	5300	0-72 1-5	0-31	0-26	0-26	0-23	smd
SIT105TH	30	01:00.5	5300	0.72, 1.5	0.31	30	5300	0-72 1-5	0-31	0-26	0-26	0-23	tht
SIT106	20	1:01	2300	1	0.38	20	2300	1	0-38	0-26	0-26	0-23	smd
SIT106TH	20	1:01	2300	1	0.38	20	2300	1	0-38	0-26	0-26	0-23	tht
SIT107	20	01:01.1	2300	1, 1.1	0.38	20	2300	1 1-1	0-38	0-26	0-26	0-23	smd
SIT107TH	20	01:01.1	2300	1, 1.1	0.38	20	2300	1 1-1	0-38	0-26	0-26	0-23	tht
SIT108	20	01:01.2	2300	1, 1.2	0.38	20	2300	1 1-2	0-38	0-26	0-26	0-23	smd
SIT108TH	20	01:01.2	2300	1, 1.2	0.38	20	2300	1 1-2	0-38	0-26	0-26	0-23	tht
SIT109	20	1:02	2300	1, 2.1	0.38	20	2300	1 2-1	0-38	0-26	0-26	0-23	smd
SIT109TH	20	1:02	2300	1, 2.1	0.38	20	2300	1 2-1	0-38	0-26	0-26	0-23	tht
SIT110	20	01:00.5	2300	0.51, 1	0.38	20	2300	0-51 1	0-38	0-26	0-26	0-23	smd
SIT110TH	20	01:00.5	2300	0.51, 1	0.38	20	2300	0-51 1	0-38	0-26	0-26	0-23	tht
SIT111	10	1:01	590	0.5	0.53	10	590	0-5	0-53	0-26	0-26	0-23	smd
SIT111TH	10	1:01	590	0.5	0.53	10	590	0-5	0-53	0-26	0-26	0-23	tht
SIT112	10	01:01.1	590	0.5, 0.55	0.53	10	590	0-5 0-55	0-53	0-26	0-26	0-23	smd
SIT112TH	10	01:01.1	590	0.5, 0.55	0.53	10	590	0-5 0-55	0-53	0-26	0-26	0-23	tht
SIT113	10	01:01.2	590	0.5, 0.6	0.53	10	590	0-5 0-6	0-53	0-26	0-26	0-23	smd
SIT113TH	10	01:01.2	590	0.5, 0.6	0.53	10	590	0-5 0-6	0-53	0-26	0-26	0-23	tht
SIT114	10	1:02	590	0.5, 1	0.53	10	590	0-5 1	0-53	0-26	0-26	0-23	smd
SIT114TH	10	1:02	590	0.5, 1	0.53	10	590	0-5 1	0-53	0-26	0-26	0-23	tht
SIT115	10	01:00.5	590	0.26, 0.5	0.53	10	590	0-26 0-5	0-53	0-26	0-26	0-23	smd
SIT115TH	10	01:00.5	590	0.26, 0.5	0.53	10	590	0-26 0-5	0-53	0-26	0-26	0-23	tht
SIT121	30	1:01	700	1.5	0.43	30	700	1-5	0-43	0-26	0-26	0-23	smd
SIT121TH	30	1:01	700	1.5	0.43	30	700	1-5	0-43	0-26	0-26	0-23	tht
SIT122	30	01:01.1	700	1.5, 2.2	0.43	30	700	1-5 2-2	0-43	0-26	0-26	0-23	smd
SIT122TH	30	01:01.1	700	1.5, 2.2	0.43	30	700	1-5 2-2	0-43	0-26	0-26	0-23	tht
SIT123	30	01:01.2	700	1.5, 2.4	0.43	30	700	1-5 2-4	0-43	0-26	0-26	0-23	smd
SIT123TH	30	01:01.2	700	1.5, 2.4	0.43	30	700	1-5 2-4	0-43	0-26	0-26	0-23	tht
SIT124	30	1:02	700	1.5, 3.1	0.43	30	700	1-5 3-1	0-43	0-26	0-26	0-23	smd
SIT124TH	30	1:02	700	1.5, 3.1	0.43	30	700	1-5 3-1	0-43	0-26	0-26	0-23	tht
SIT125	30	01:00.5	700	0.7, 1.5	0.43	30	700	0-7 1-5	0-43	0-26	0-26	0-23	smd
SIT125TH	30	01:00.5	700	0.7, 1.5	0.43	30	700	0-7 1-5	0-43	0-26	0-26	0-23	tht
SIT126	20	1:01	310	1	0.52	20	310	1	0-52	0-26	0-26	0-23	smd
SIT126TH	20	1:01	310	1	0.52	20	310	1	0-52	0-26	0-26	0-23	tht
SIT127	20	01:01.1	310	1, 1.1	0.52	20	310	1 1-1	0-52	0-26	0-26	0-23	smd
SIT127TH	20	01:01.1	310	1, 1.1	0.52	20	310	1 1-1	0-52	0-26	0-26	0-23	tht
SIT128	20	01:01.2	310	1, 1.2	0.52	20	310	1 1-2	0-52	0-26	0-26	0-23	smd
SIT128TH	20	01:01.2	310	1, 1.2	0.52	20	310	1 1-2	0-52	0-26	0-26	0-23	tht
SIT129	20	1:02	310	1, 2.1	0.52	20	310	1 2-1	0-52	0-26	0-26	0-23	smd
SIT129TH	20	1:02	310	1, 2.1	0.52	20	310	1 2-1	0-52	0-26	0-26	0-23	tht
SIT130	20	01:00.5	310	0.5, 1	0.52	20	310	0-5 1	0-52	0-26	0-26	0-23	smd
SIT130TH	20	01:00.5	310	0.5, 1	0.52	20	310	0-5 1	0-52	0-26	0-26	0-23	tht
SIT131	10	1:01	770	0.5	0.74	10	770	0-5	0-74	0-26	0-26	0-23	smd
SIT131TH	10	1:01	770	0.5	0.74	10	770	0-5	0-74	0-26	0-26	0-23	tht
SIT132	10	01:01.1	770	0.5, 0.6	0.74	10	770	0-5 0-6	0-74	0-26	0-26	0-23	smd
SIT132TH	10	01:01.1	770	0.5, 0.6	0.74	10	770	0-5 0-6	0-74	0-26	0-26	0-23	tht
SIT133	10	01:01.2	770	0.5, 0.6	0.74	10	770	0-5 0-6	0-74	0-26	0-26	0-23	smd
SIT133TH	10	01:01.2	770	0.5, 0.6	0.74	10	770	0-5 0-6	0-74	0-26	0-26	0-23	tht
SIT134	10	1:02	770	0.5, 1	0.74	10	770	0-5 1	0-74	0-26	0-26	0-23	smd
SIT134TH	10	1:02	770	0.5, 1	0.74	10	770	0-5 1	0-74	0-26	0-26	0-23	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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SIT100 Series

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