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China Split Bobbin Transformer with Dual Cavity Platform Bel Fuse DST-2-28 Signal ST DST Series Rigid Pins for sale

Split Bobbin Transformer with Dual Cavity Platform Bel Fuse DST-2-28 Signal ST DST Series Rigid Pins

Price Negotiable
Price: Negotiable
MOQ: Negotiable
Delivery Time: Negotiable
Product Description

Product Overview

The Signal ST/DST Series Split/Tran Specialty Purpose & Class 2 Transformers are designed for printed circuit board mounting. Utilizing a dual cavity platform, these transformers offer superior isolation and low capacitive coupling. Their rigid pin construction ensures easier board insertion and enhanced reliability, making them suitable for a wide range of applications requiring high isolation and precise signal transmission. They are available in various power ratings from 1.1 VA to 36 VA and meet stringent agency certifications.

Product Attributes

  • Brand: Signal Transformer (Bel Fuse)
  • Series: ST / DST Series Split/Tran
  • Construction: Split Bobbin with Dual Cavity Platform
  • Pin Construction: Rigid
  • Insulation System: Class F, 155 C
  • RoHS Compliant: Yes
  • Agency Certifications: UL 1446, UL Recognized 506 / UL 5085-1, 2, CSA certified to C22.2 #66.1, cCSAus certified to C22.2 #66.3 / UL 5085-3
  • Class 2 Marking: Indicated by (*), (**), or (#)

Technical Specifications

Model Power (VA) Secondary RMS Rating (Series) Secondary RMS Rating (Parallel) Primary Voltage (V) Frequency (Hz) Dielectric Strength (Vrms Hipot) Insulation System Dimensions (L x W x H) Inches (mm) Weight lbs (kg)
ST-2-10**# / DST-2-10**# 1.1 10 VCT @ 0.11 A 5 V @ 0.22 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-10*# / DST-3-10*# 2.4 10 VCT @ 0.25 A 5 V @ 0.5 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-10*# / DST-4-10*# 6 10 VCT @ 0.6 A 5 V @ 1.2 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-10*# / DST-5-10*# 12 10 VCT @ 1.2 A 5 V @ 2.4 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-10 / DST-6-10 20 10 VCT @ 2.0 A 5 V @ 4.0 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-10 / DST-7-10 36 10 VCT @ 3.6 A 5 V @ 7.2 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-12**# / DST-2-12**# 1.1 12.6 VCT @ 0.09 A 6.3 V @ 0.18 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-12*# / DST-3-12*# 2.4 12.6 VCT @ 0.2 A 6.3 V @ 0.4 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-12*# / DST-4-12*# 6 12.6 VCT @ 0.5 A 6.3 V @ 1.0 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-12*# / DST-5-12*# 12 12.6 VCT @ 1.0 A 6.3 V @ 2.0 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-12 / DST-6-12 20 12.6 VCT @ 1.6 A 6.3 V @ 3.2 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-12 / DST-7-12 36 12.6 VCT @ 2.85 A 6.3 V @ 5.7 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-16**# / DST-2-16**# 1.1 16 VCT @ 0.07 A 8 V @ 0.14 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-16*# / DST-3-16*# 2.4 16 VCT @ 0.15 A 8 V @ 0.3 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-16*# / DST-4-16*# 6 16 VCT @ 0.4 A 8 V @ 0.8 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-16*# / DST-5-16*# 12 16 VCT @ 0.8 A 8 V @ 1.6 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-16 / DST-6-16 20 16 VCT @ 1.25 A 8 V @ 2.5 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-16 / DST-7-16 36 16 VCT @ 2.25 A 8 V @ 4.5 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-20**# / DST-2-20**# 1.1 20 VCT @ 0.055 A 10 V @ 0.11 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-20*# / DST-3-20*# 2.4 20 VCT @ 0.12 A 10 V @ 0.24 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-20*# / DST-4-20*# 6 20 VCT @ 0.3 A 10 V @ 0.6 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-20*# / DST-5-20*# 12 20 VCT @ 0.6 A 10 V @ 1.2 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-20 / DST-6-20 20 20 VCT @ 1.0 A 10 V @ 2.0 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-20 / DST-7-20 36 20 VCT @ 1.8 A 10 V @ 3.6 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-24**# / DST-2-24**# 1.1 24 VCT @ 0.045 A 12 V @ 0.09 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-24*# / DST-3-24*# 2.4 24 VCT @ 0.1 A 12 V @ 0.2 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-24*# / DST-4-24*# 6 24 VCT @ 0.25 A 12 V @ 0.5 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-24*# / DST-5-24*# 12 24 VCT @ 0.5 A 12 V @ 1.0 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-24 / DST-6-24 20 24 VCT @ 0.8 A 12 V @ 1.6 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-24 / DST-7-24 36 24 VCT @ 1.5 A 12 V @ 3.0 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-28 / DST-2-28 1.1 28 VCT @ 0.04 A 14 V @ 0.08 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-28 / DST-3-28 2.4 28 VCT @ 0.085 A 14 V @ 0.17 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-28 / DST-4-28 6 28 VCT @ 0.2 A 14 V @ 0.4 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-28 / DST-5-28 12 28 VCT @ 0.42 A 14 V @ 0.84 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-28 / DST-6-28 20 28 VCT @ 0.7 A 14 V @ 1.4 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-28 / DST-7-28 36 28 VCT @ 1.3 A 14 V @ 2.6 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-36 / DST-2-36 1.1 36 VCT @ 0.03 A 18 V @ 0.06 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-36 / DST-3-36 2.4 36 VCT @ 0.065 A 18 V @ 0.13 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-36 / DST-4-36 6 36 VCT @ 0.17 A 18 V @ 0.34 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-36 / DST-5-36 12 36 VCT @ 0.35 A 18 V @ 0.7 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-36 / DST-6-36 20 36 VCT @ 0.55 A 18 V @ 1.1 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-36 / DST-7-36 36 36 VCT @ 1.0 A 18 V @ 2.0 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-48 / DST-2-48 1.1 48 VCT @ 0.023 A 24 V @ 0.046 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-48 / DST-3-48 2.4 48 VCT @ 0.05 A 24 V @ 0.1 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-48 / DST-4-48 6 48 VCT @ 0.125 A 24 V @ 0.25 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-48 / DST-5-48 12 48 VCT @ 0.25 A 24 V @ 0.5 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-48 / DST-6-48 20 48 VCT @ 0.4 A 24 V @ 0.8 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-48 / DST-7-48 36 48 VCT @ 0.75 A 24 V @ 1.5 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-56 / DST-2-56 1.1 56 VCT @ 0.02 A 28 V @ 0.04 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-56 / DST-3-56 2.4 56 VCT @ 0.045 A 28 V @ 0.09 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-56 / DST-4-56 6 56 VCT @ 0.11 A 28 V @ 0.22 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-56 / DST-5-56 12 56 VCT @ 0.22 A 28 V @ 0.44 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-56 / DST-6-56 20 56 VCT @ 0.35 A 28 V @ 0.7 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-56 / DST-7-56 36 56 VCT @ 0.65A 28 V @ 1.3 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)
ST-2-120 / DST-2-120 1.1 120 VCT @ 0.01 A 60 V @ 0.02 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 0.97 (34.9 x 28.6 x 24.6) 0.17 (0.08)
ST-3-120 / DST-3-120 2.4 120 VCT @ 0.02 A 60 V @ 0.04 A 115 V 50/60 2500 Class F, 155 C 1.37 x 1.12 x 1.21 (34.9 x 28.6 x 30.8) 0.25 (0.11)
ST-4-120 / DST-4-120 6 120 VCT @ 0.05 A 60 V @ 0.1 A 115 V 50/60 2500 Class F, 155 C 1.62 x 1.31 x 1.31 (41.3 x 33.3 x 33.3) 0.44 (0.20)
ST-5-120 / DST-5-120 12 120 VCT @ 0.1 A 60 V @ 0.2 A 115 V 50/60 2500 Class F, 155 C 1.91 x 1.59 x 1.45 (48.4 x 40.4 x 36.9) 0.70 (0.32)
ST-6-120 / DST-6-120 20 120 VCT @ 0.16 A 60 V @ 0.32 A 115 V 50/60 2500 Class F, 155 C 2.25 x 1.88 x 1.45 (57.2 x 47.8 x 36.9) 0.80 (0.36)
ST-7-120 / DST-7-120 36 120 VCT @ 0.3 A 60 V @ 0.6 A 115 V 50/60 2500 Class F, 155 C 2.62 x 2.18 x 1.59 (66.7 x 55.5 x 40.4) 1.1 (0.50)

Note: Recommended secondary fuse values are provided in the original datasheet, referenced by numbers in parentheses next to the secondary ratings (e.g., (1), (2), etc.). Mounting hardware specifications are available in the Accessories datasheet.

Primary Options: Single or dual primaries, 115 V or 115/230 V, 50/60 Hz.

Secondary Options: Series or parallel configurations.

Electrostatic Shield: Not necessary due to split bobbin construction.

Mounting Hardware: See chart for details. Size 7 has 4 mounting holes on 2.18 x 1.75 centers for #6 screws. Optional mounting screw (ST-MS) and nut (ST-MN) available from Signal.


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Company Changsha Purple Horn E-Commerce Co., Ltd.
Location 2332 Kaibin Commercial Plaza, No. 419 Shaoshan Middle Road, Shazitang Street, Yuhua District, Changsha City, Hunan Province
Contact Person Sellina

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