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PolySwitch Resettable Devices – Strap Battery Devices

199

TE Circuit Protection, a pioneer of polymeric positive

temperature coefficient resettable devices, has developed

several material platforms to help protect battery

applications. Each of these material platforms offers

different performance characteristics, allowing the

engineer greater design flexibility. PolySwitch devices

for battery protection include SRP, LR4, VTP, VLP, VLR

and MXP series, disc, and special application strap

devices.

• Many material platforms and device form factors

give engineers more design flexibility

• Compatible with high-volume electronics assembly

• Assists in meeting regulatory requirements

• Low resistance devices increase battery operating

time

• RoHS compliant

• Lead free versions of all devices are available

• Broad range of resettable devices available

• Current ratings from 1.1A to 13A

• Voltage ratings from 6V to 30V

• Agency recognition, UL, CSA, TÜV

• Fast time-to-trip

• Low resistance

• Mobile phone and smart phone battery packs

• Tablet PC battery packs

• Mobile radio battery packs

• Computer battery packs

PolySwitch Resettable Devices

Strap Battery Devices

Benefits Features

Applications

• Digital camera battery packs

• Portable media player battery packs

• Power tools (charge line)

Summary of content (14 pages)

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TE Circuit Protection, a pioneer of polymeric positive temperature coefficient resettable devices, has developed several material platforms to help protect battery applications. Each of these material platforms offers different performance characteristics, allowing the engineer greater design flexibility. PolySwitch devices for battery protection include SRP, LR4, VTP, VLP, VLR and MXP series, disc, and special application strap devices.
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Application Selection Guide for Strap Battery Devices The guide below lists PolySwitch strap battery devices which are typically used in these applications. The following pages contain the specifications for the part numbers recommended below. Once a device is selected, the user should evaluate and test each product for its intended application.
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Part Number Thermal Derating for Strap Battery Devices [Hold Current (A) at Ambient Temperature (°C)] Maximum Ambient Temperature -40°C -20°C 0°C 20°C Amps 25°C 40°C 50°C 60°C 70°C 80°C 85°C 85°C Typical Activation VLR* VLR170F 3.5 2.9 2.4 1.84 1.70 1.2 1.0 0.7 0.3 — — VLR170LF 3.5 2.9 2.4 1.84 1.70 1.2 1.0 0.7 0.3 — — VLR170UF 3.5 2.9 2.4 1.84 1.70 1.2 1.0 0.7 0.3 — — VLR175F 3.5 2.9 2.4 1.87 1.75 1.3 1.0 0.8 0.3 — — VLR175LF 3.5 2.9 2.4 1.87 1.
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Figure B1 Thermal Derating Curve for Strap Battery Devices = = = = Figure B1 LR4 SRP VTP, VLP, MXP VLR 200 D C 180 % of Rated Hold and Trip Current A B C D 160 B A 140 120 100 80 60 A B 40 20 0 -50 C -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 D 90 Temperature (˚C) Table B3 Electrical Characteristics for Strap Battery Devices IH (A) IT (A) VMAX (VDC) IMAX (A) PD MAX (W) RMIN (Ω) RMAX (Ω) R1MAX (Ω) Figure for Dimensions VLR170F 1.70 4.1 12 100 1.4 8.50 VLR170LF 1.
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IH (A) IT (A) VMAX (VDC) IMAX (A) PD MAX (W) SRP120F 1.20 2.7 15 100 1.2 6.00 SRP120LF 1.20 2.7 15 100 1.2 6.00 SRP120SF 1.20 2.7 15 100 1.2 SRP175F 1.75 3.8 15 100 SRP175LF 1.75 3.8 15 SRP175SF 1.75 3.8 SRP200F 2.00 SRP350F SRP420F Cont’d RMIN (Ω) RMAX (Ω) R1MAX (Ω) Figure for Dimensions 5.0 0.085 0.160 0.220 B6 5.0 0.085 0.160 0.220 B6 6.00 5.0 0.085 0.160 0.220 B10 1.5 8.75 5.0 0.050 0.090 0.120 B6 100 1.5 8.75 5.0 0.050 0.090 0.
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Figure B2-B12 Dimension Figures for Strap Battery Devices Figure B5 Cont’d Figure B6 Figure B7 B B F D C A C A E A F D C B F D Figure B11 A C B E E Figure B10 C B F D E Figure B9 A C B F D Figure B8 A E D E Figure B12 A A C C B B F D E F D E Table B4 Dimensions for Strap Battery Devices in Millimeters (Inches) A Part Number 85°C Typical Activation VLR VLR170F 12 B Min. Max. 20.8 23.2 (0.832) (0.928) VLR170LF 38.8 41.2 (1.552) (1.
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A Part Number 90°C Typical Activation VLP VLP120UF B Min. Max. 10.9 11.8 (0.430) (0.460) VLP175UF 19.0 21.0 (0.750) (0.830) VLP210F 15.4 17.5 (0.616) (0.700) VLP220F 21.1 23.3 (0.844) (0.932) VLP270F 20.9 23.1 (0.836) (0.924) C D Min. Max. Min. 4.4 4.6 — 0.7 — (0.028) (0.170) (0.180) 3.4 3.6 (0.130) (0.140) 6.9 7.3 (0.276) (0.292) 3.5 3.9 (0.140) (0.156) 4.9 5.3 (0.196) (0.212) Max. — 0.7 — (0.030) 0.6 0.8 (0.024) (0.032) 0.6 0.8 (0.024) (0.032) 0.6 0.8 (0.
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Table B4 Dimensions for Strap Battery Devices in Millimeters (Inches) A Part Number B Min. Max. 19.9 22.1 C Min. Max. 4.9 5.5 D Min. Max. 0.6 1.0 Cont’d E Min. Max. 5.5 7.5 F Min. Max. 5.5 7.5 Min. Max. Figure 4.1 B8 LR4 LR4-190F (0.796) (0.884) LR4-260F 20.9 23.1 (0.836) (0.924) LR4-260SF 20.9 23.1 (0.836) (0.924) LR4-380F 24.0 26.0 (0.960) (1.040) LR4-380XF 32.2 35.8 (1.288) (1.432) LR4-450F 24.0 26 (0.960) (1.040) LR4-550F 35.0 37.0 (1.400) (1.
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Figure B14 100 10 B C D E A 1 Time-to-trip (s) VLP (data at 25°C) A = VLP120UF B = VLP175UF C = VLP210F D = VLP220F E = VLP270F Cont’d 0.10 0.01 E D C 0.001 B A 0.0001 1 10 100 Fault Current (A) VTP (data at 25°C) A = VTP110F B = VTP170F C = VTP175F D = VTP210GF Figure B15 100 PolySwitch Resettable Devices – Strap Battery Devices Figure B13-B18 Typical Time-to-trip Curves at 20°C for Strap Battery Devices D 10 A Time-to-trip (s) C B 1 0.10 0.01 B D A C 0.
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Figure B13-B18 Typical Time-to-trip Curves at 20°C for Strap Battery Devices Figure B17 SRP120F SRP175F SRP200F SRP350F SRP420F 100 10 Typical Time-to-trip (s) SRP A = B = C = D = E = Cont’d C D E B A 1 0.10 C D E B A 0.01 1 10 100 Fault Current (A) Figure B18 LR4-190F LR4-260F LR4-380F LR4-450F LR4-550F LR4-600F LR4-730F LR4-900F LR4-1300SSF G 100 F E A 10 Typical Time-to-trip (s) LR4 A = B = C = D = E = F = G = H = I = B C H I D G F E D C 1 I H B A 0.10 0.
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Cont’d VLP and VTP Physical Characteristics Lead material Tape material 0.125mm nominal thickness, quarter-hard nickel Polyester Environmental Specifications Test Passive aging Humidity aging Thermal shock Vibration Conditions -40°C, 1000 hours 60°C, 1000 hours 60°C/95% RH, 1000 hours 85°C, -40°C (10 times) MIL-STD-883D, Method 2026 Resistance Change ±5% typical ±10% typical ±10% typical ±5% typical No change MXP Physical Characteristics Lead material Coating material 0.
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Table B6 Packaging and Marking Information/Agency Recognition for Strap Battery Devices Bag Quantity Tape & Reel Quantity Standard Package Quantity Part Marking Agency Recognition VLR170F 1,000 — 10,000 R17 UL, CSA,TÜV VLR170LF 1,000 — 10,000 R17 UL, CSA,TÜV VLR170UF 1,000 — 10,000 — UL, CSA,TÜV VLR175F 1,000 — 10,000 R1X UL, CSA,TÜV VLR175LF 1,000 — 10,000 R1X UL, CSA,TÜV VLR175UF 1,000 — 10,000 — UL, CSA,TÜV VLR230F 1,000 — 10,000 R23 UL, CSA,TÜV VLP120UF 1,
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PolySwitch Resettable Devices – Strap Battery Devices Agency Recognition for Strap Battery Devices UL CSA TÜV File # E74889 File # 78165C Certificate number available on request Installation Guidelines for the Strap Family • PPTC devices operate by thermal expansion of the conductive polymer. If devices are placed under pressure or installed in spaces that would prevent thermal expansion, they may not properly protect against damage caused by fault conditions.
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