1
FTR-K1 SERIES
n FEATURES
l DPDT 2C
l Ultra miniature slim type relay for surface mounting
Height: 9.3 mm maximum (THT)
10 mm maximum (SMT)
Weight: Approximately 1.0 g
l UL, CSA recognized
l Conforms to Telcordia/FCC Part 68
spacing and high breakdown voltage
Creepage: 1.6mm
Dielectric strength 1.5kV (coil-contact)
Surge strength 2.5kV
l High reliable birfuracted gold overlay silver contact
l Low power consumption 140 mW (standard), 100 mW (latching)
l RoHS compliant. Please see page 9 for more information
l Plastic sealed
Remarks: Actual marking on relay would not carry code FTR and be as below:
Ordering code: FTR-B4CA4.5Z Actual marking: B4CA4.5Z
ULTRA MINIATURE RELAY
2 POLES - 2 A (Slim Prole Signal Relay)
n PARTNUMBER INFORMATION
FTR-B4 C A 4.5 Z - B05
[Example] (a) (b) (c) (d) (e) (f)
FTR-B4 Series
(a) Relay type FTR-B4 : FTR-B4-Series
(b) Terminal type C
G
S
: Through hole
: Surface mount
: Surface mount, space saving
(c) Coil type A
B
: Standard type
: Latching type (1 coil)
(d) Coil rated voltage 4.5 : 1.5.....24 VDC
Coil rating table at page 3
(e) Contact material Z
P
: Gold overlay silver nickel (standard)
: Gold overlay silver palladium
(f) Packaging Nil:
B05
: Tube packaging
: Tape&Peel packaging (only for surface mount type)
2
FTR-K1 SERIES
* Minimum switching loads mentioned above are reference values. Please perform the conrmation test with actual
load before production since reference values may vary according to switching frequencies, environmental conditions
and expected reliability levels.
FTR-B4 SERIES
n SPECIFICATION
Item Standard type Latching type
FTR-B4 ( ) A FTR-B4 ( ) B
Contact Data Conguration 2 form C
Construction Bifurcated contacts
Material Z: Gold overlay silver nickel / P: Gold overlay silver
palladium
Resistance (Initial) Max. 100 mΩ at 1 A, 6 VDC
Contact rating (resistive) 30VDC, 1A / 125VAC, 0.3A
Max. carrying current 2A
Max. switching voltage 250 VAC / 220VDC
Max. switching power 62.5VA / 30W
Min. switching load * 0.01mA, 10mVDC
Life Mechanical Min. 50 x 106 operations Min. 20 x 106 operations
Electrical DC load Min. 100 x 103 operations at 1A, 30VDC
AC load Min. 100 x 103 operations at 0.3A, 125VAC
Coil Data Rated power 140mW - 230mW 100mW - 130mW
Applied pulse width - Min. 10ms
Operate power 80mW - 130mW 57mW - 68mW
Operating temperature range -40 °C to +85 °C (no frost)
Storage temperature / humidity -40 °C to +85 °C / 5% to 85% RH (no frost)
Timing Data Operate (at nominal voltage, no bounce) Max. 3 ms Max. 3 ms (set)
Release (at nominal voltage, no bounce) Max. 3 ms Max. 3 ms (reset)
Insulation Resistance (initial) Min. 1,000MΩ at 500VDC
Dielectric strength
Open contacts 1,000VAC (50/60Hz) 1min
Contacts to coil 1,500VAC (50/60Hz) 1min
Adjacent contacts 1,000VAC (50/60Hz) 1min.
Surge strength Coil to contacts 2,500V, 2 x 10µs standard wave
Clearance
Adjacent contacts 1.0 mm
Open contacts 0.28 mm
Coil and contacts 1.0 mm
Creepage
Adjacent contacts 1.0 mm
Open contacts 0.28 mm
Coil and contacts 1.60 mm
Other Vibration resistance Misoperation 10 to 55 to 10Hz at single amplitude 1.65 mm
Endurance 10 to 55 to 10Hz at single amplitude 2.5 mm
Shock Misoperation 750m/s² (11 ±1ms)
Endurance 1,000m/s² (6 ±1ms)
Weight Approximately 1 g
Sealing RT III (plastic sealed)
3
FTR-K1 SERIES
n COIL RATING
FTR-B4 SERIES
Coil
Code
Rated Coil
Voltage
(VDC)
Coil Resistance
+/- 10% (Ohm)
Must Operate
Voltage
(VDC) *
Must Release
Voltage
(VDC) *
Rated Power
(mW)
1.5 1.5 16.1 1.13 0.15
140
003 3 64.3 2.25 0.3
4.5 4.5 145 3.38 0.45
006 6 257 4.5 0.6
009 9 579 6.75 0.9
012 12 1,028 9.0 1.2
024 24 2,504 18.0 2.4 230
Standard type
Latching type (1 coil)
Coil
Code
Rated Coil
Voltage
(VDC)
Coil Resistance
+/- 10% (Ohm)
Set Voltage
(VDC) *
Reset Voltage
(VDC) *
Set/Reset current
(mA)
Rated Power
(mW)
1.5 1.5 22.5 +1.13 -1.13 50
100
003 3 90 +2.25 -2.25 25
4.5 4.5 203 +3.38 -3.38 17
006 6 360 +4.5 -4.5 13
009 9 810 +6.75 -6.75 8
012 12 1,440 +9.0 -9.0 6
024 24 4,800 +18.0 -18.0 4 120
n SAFETY STANDARDS
Note: All values in the table are valid for 20°C and zero contact current.
* Specied operate values are valid for pulse wave voltage..
Type Compliance Contact rating
UL UL 508
E 63615
Flammability: UL 94-V0 (plastics)
0.5A, 125VAC (resistive)
1A, 30VDC
0.3A, 110VDC
2A, 30VDC
CSA C22.2 No. 14
LR 40304
Comply with Telcordia specications and FCC part 68 and meet BSI EN60950-1:
Marking only for UL, CSA
4
FTR-K1 SERIES
n CHARACTERISTIC DATA (Reference)
FTR-B4 SERIES
l Standard type
5
FTR-K1 SERIES
FTR-B4 SERIES
l Latching type (1coil)
6
FTR-K1 SERIES
FTR-B4 SERIES
7
FTR-K1 SERIES
n DIMENSIONS
FTR-B4 SERIES
FTR-B4C - Through hole type
l Dimensions l PC board mounting
hole layout
(BOTTOM VIEW)
l Schematics
(BOTTOM VIEW)
FTR-B4G - Surface mount type
l Dimensions l PC board mounting
pad layout
(TOP VIEW)
l Schematics
(TOP VIEW)
FTR-B4S- Space saving type
l Dimensions l PC board mounting
pad layout
(TOP VIEW)
l Schematics
(TOP VIEW)
* +/-: Indicates reset state for latching relays (FTR-B4CB, FTR-B4GB and FTR-B4SB versions)
Indicates non-operate state for standard relays (FTR-B4CA, FTR-B4GA and FTR-B4SA versions)
(+)/(-): Indicates set state for latching relays, operate state for standard relays.
Note: Tolerance for PC board mounting hole/pad layout: +/-0.1.
Note: Dimensions of the terminals do not include thickness of pre-solder.
8
FTR-K1 SERIES
FTR-B4 SERIES
n PRECAUTIONS
- For details on general precautions, refer to the section on technical descriptions.
- Since this is a polarized relay, follow the instructions of the internal wiring diagram for the ± connections of the coil.
- Note that the terminal layout and internal wiring of the surface mount relay are a top view.
- Characteristic data is not guaranteed values but measured values of samples from production line.
n RECOMMENDED SOLDERING CONDITIONS FOR SMT (SEE PAGE 9)
(TEMPERATURE PROFILE)
Notes:
1. Temperature proles on page 9 show the temperature of PC board surface.
2. Please perform soldering test with your actual PC board before mass production, since the temperatures of PC board
surfaces vary according to the size of PC board, status of parts mounting and heating method.
n PACKAGING SPECIFICATIONS
l Packaging method l Packaging orientation code: B
l Reel dimensions l Tape dimensions
Note:
Relays are sold in 500 pieces per box. Minimum order quantity is 1000 pieces
for tube packing and 500 pieces for tape & reel packing.
- Packaging standard: JIS C 0806
- Taping type: TB 2412
- Reel type: R24D
- Quantity of 1 reel: 500 pieces
n COIL POLARITY LATCHING TYPE
Coil terminal 1 8
Set + -
Reset - +
9
FTR-K1 SERIES
FTR-B4 SERIES
1. ROHS COMPLIANCE
l All relays produced by Fujitsu Components are compliant with RoHS directive 2011/65/EU including
amendments.
l Use of cadmium in electrical contacts is exempted as per Annex III of the RoHS directive 2011/65/EU. Please consider
expiry date of exemption. Relays with cadmium containing contacts are not to be used for new designs.
l All relays are lead-free. Please refer to Lead-Free Status Info for older date codes at:
http://www.fujitsu.com/downloads/MICRO/fcai/relays/lead-free-letter.pdf
2. Recommended Lead Free Solder Condition
l Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specified.
This material has been verified to be compatible with PbSn assembly process.
l Recommended solder Sn-3.0Ag-0.5Cu.
General information
Flow Solder Condition:
Pre-heating: maximum 120˚C
within 90 sec.
Soldering: dip within 5 sec. at
255˚C ± 5˚C solder bath
Relay must be cooled by air immediately
after soldering
Solder by Soldering Iron:
Soldering Iron 30-60W
Temperature: maximum 340-360˚C
Duration: maximum 3 sec.
3. Moisture Sensitivity
l SMT versions of FTR-B4 relays in Tape & Reel package will be shipped in Moisture Barrier Bag(MBB).
l Moisture Sensitivity Level (MSL) of FTR-B4 relay is indicated on the packing caution label.
l Relays must be stored in the unopened MBB at storage conditions <40C/90%RH for a maximum 1 year
l SMT versions of FTR-B4 relays in tube packing will not be shipped in MBB. Therefore, these relays shall be dried by
baking before reflow soldering process according to IPC/JEDEC J-STD-033.
4. Tin Whiskers
l Dipped SnAgCu solder is known as presenting a low risk to tin whisker development. No considerable length
whisker was found by our in house test.
We highly recommend that you conrm your actual solder conditions
10
FTR-K1 SERIES
FTR-B4 SERIES
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usefulness, availability and completeness thereof. Rev. October 30th, 2017
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