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Flame Retardant
Thermocoat
Tin Plated Copper Clad
Steel-Copper Weld®
Alloy Resistance Wire Wound
To Specific Parameters On
High Thermal Conductivity
Ceramic Core
Fully Welded
Construction
WIRE WOUND RESISTORS
SILICONE COATED TYPE
VHIA
SERIES
HIGH SURFACE TEMPERATURE
Power Silicone“Thermo Coat”
Wire Wound Resistors
Industrial / Professional Applications
• Flame retardant coating compatible
	 with UL standards
• Small Size : Power Ratio.
• 0.5W to 20 Watts (at 40°C)
• Tolerances as close as 1%.
• R01 to 120K.
• TCR as low as +20ppm/°C available depending
on application and resistance value.
• Pulse applications as per
IEC 61000-4-5.
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
Asper AEC-Q200
PHYSICAL CONFIGURATION
0.5 MC	 0.5W	 7.0	 2.7	 38	 0.5	 30	 R10	 1K6	 0.21
1 MC	 1W	 10.9	 3.2	 38	 0.5	 30	 R10	 4K0	 0.36
1 AC	 1W	 11.50	 4.5	 38	 0.8	 35	 R01	 6K2	 0.75
2.5 C	 2.5W	 13.0	 5.5	 38	 0.8	 35	 R01	 10K	 1.2
2.5 C1	 2.5W	 13.0	 5.5	 38	 1.0	 35	 R01	 10K	 1.8
3 MC	 3W	 12.5	 5.1	 38	 0.8	 35	 R01	 7K6	 0.8
3 C	 3W	 15.2	 6.0	 38	 0.8	 40	 R01	 14K	 1.2
4 C	 4W	 16.2	 6.9	 38	 1.0	 40	 R01	 15K	 2.0
4 AC	 4W	 16.5	 5.5	 38	 0.8	 40	 R01	 11K	 1.25
4 MC	 4W	 13.2	 5.5	 38	 0.8	 35	 R01	 10K	 1.0
4 CL	 4W	 23.0	 7.2	 38	 0.8	 45	 R01	 33K	 2.9
5 AC	 5W	 17.5	 7.5	 38	 0.8	 40	 R01	 29K	 1.8
5 C1	 5W	 23.5	 8.7	 38	 1.0	 45	 R01	 47K	 3.6
5 C	 5W	 23.5	 8.7	 38	 0.8	 45	 R01	 47K	 3.1
7 AC	 7W	 25.5	 7.5	 38	 0.8	 45	 R01	 39K	 3.6
7 C1	 7W	 32.5	 9.5	 38	 1.0	 55	 R10	 68K	 5.3
10 AC	 10W	 44.0	 8.5	 38	 0.8	 65	 R10	 88K	 6.9
10 C1	 10W	 44.0	 9.8	 38	 1.0	 65	 R10	 100K	 8.3
10 C	 10W	 44.0	 9.8	 38	 0.8	 65	 R10	 100K	 7.3
13 C1	 13W	 47.0	 10.0	 38	 1.0	 70	 R10	 100K	 7.6
15AC	 15W	 50.0	 10.0	 38	 0.8	 70	 R10	 100K	 8.2
15AC1	 15W	 50.0	 10.0	 38	 1.0	 70	 R10	 100K	 8.6
20AC	 20W	 67.0	 10.0	 38	 0.8	 90	 R10	 120K	 11.5
20AC1	 20W	 67.0	 10.0	 38	 1.0	 90	 R10	 120K	 12.0
TYPE POWER
RATING
at 40°C
(Ambient)
L
(max)
D
(max)
l
±1.5
d
±0.05
LM
±1
DIMENSIONS (mm) RESISTANCE RANGE
	 min 	 max
TYPICAL
WT.
PER PC
(gms)
◊ For non-inductive types and for resistance values < 1R0 + 0.8mm allowed
⊕ For resistance values less than R10 & tolerance less than ±2% please measure
resistance over centered length LM.
Note :
1.	 The standard terminals in this series is tinned Copper Weld®.
2. For Pulse capability please refer to Electrical data / characteristics section.
NON-INDUCTIVE RESISTORS
Low inductance Aryton - Perry winding type resistors are available in this series.
For non-inductive types reduce maximum resistance values shown to 50% and the
continuous working voltage to 70%.
⊕◊
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
PRE-FORMED LEADS
TheresistorsterminationscanbebentandcutasperrequirementsforquickPCBmounting.
Please send detailed drawings of the type of preforming required.
Rev Date : 22/11/2016
Resistor Temperature rise as a function of applied power
[See graph displayed ]
The graph provided is general in nature and reflects temperature
rise of a few selected types for the general guidance of the design
engineer. Exact reading for any particular HTR type and specific
resistance value can be obtained from factory on request.
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
ELECTRICAL DATA / CHARACTERISTICS
Rated Ambient Temperature	 Full Power dissipation at 40°C and linearly derated 		
down to zero at 350°C -[Refer Derating curve above].
Voltage Rating / Limiting Voltage / Max Working Voltage	 V = PxR
Dielectric Withstanding Voltage / Voltage Proof	 Max. ∆R ± (1% + R05). No flashover, mechanical 		
[Test method no. 301 of MIL 202F] - Based on limiting	 damage, arcing or insulation breakdown.
voltage x 2 or 500V whichever is applicable.
Insulation Resistance	 > 1000M (dry) > 100M (wet)
[Test method no. 302 of MIL 202F]
Short Time Overload [Test Method - 5 secs at 5 times rated power for	 Max. ∆R ± (2% + R05)
3 watts and smaller; 5 secs at 10 times rated power for 4 watts and larger]
Resistance Tolerances Available	 ±10%[K]; ±5% [J]; ±3%[H]; ±2%[G]; ±1%[F]
PARAMETER/PERFORMANCE TEST&TEST METHOD	 PERFORMANCE REQUIREMENTS
Pulse Capability :
For the design engineer HTR has selected a few types and provided below, vital data in the form of charts / graphs which illustrate two
important characteristics of the pulse version of these HTR types.
Pulse On Regular Basis - The maximum allowable peak pulse power (W) as a function of pulse duration (T) in seconds. (Repetetive Pulse)
- tp repetition time of the pulses / ti - impulse time-duration of pulse.
1 AC
PeakPulsePower(W)
Time (Seconds)
1R5
PeakPulsePower(W)
3 MC
Time (Seconds)
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
PeakPulsePower(W)
4 AC
Time (Seconds)
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
PeakPulsePower(W)
5 AC
7 AC
PeakPulsePower(W)
Time (Seconds)
Time (Seconds)
10 AC
PeakPulsePower(W)
Time (Seconds)
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
1 AC
3 MC
Pulse Capability - Energy (J) as a function of R
(W) (Single Pulse)
J
J
4 AC J
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
5 AC
7AC
10 AC
J
J
J
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
1. RoHS version - 0.5 MC *
2. Non inductive winding - N 0.5 MC
3. Impulse type - 0.5 MC I
4. Tape & Ammo pack - 0.5 MC T
5. Tape & Reel pack - 0.5 MC TR
Taping : Types 0.5MC, 1MC, 1AC, 4C, 3C, 3MC, 4MC, 2.5C1, 2.5C, 5C1, 5AC, 5C, 7AC, 4CL, 7C1, 10AC, 10C, 10C1, 15AC, 15AC1 are available
in taped form. Please refer Tape / Ammo specifications. Tape / Reel on request.
Pull test / Robustness of Terminations 	 No mechanical damage
[Force supplied from 2 to 4.5 Kgs depending on size]
Solderability	 Continuous and satisfactory
[Test method no. 208F of MIL 202F]	 ∆R < ± [1% + R05]
Temperature Co-efficient 	 ± 120ppm/°C for < R10; ± 80ppm/°C for < 1R0;
[Test method 304 of MIL 202F]	 ± 60ppm/°C for < 100R; ± 90ppm/°C or
[TCR figures given are based on the usage of normally 	 ± 30ppm/°Cfor>100R, depending on wire selected
effective resistance elements and can be
significantly lowered on request]	
Damp Heat (Steady State)	 Max. ∆R ± [5% + R05]
[Test method no. 103B of MIL 202F and test condition‘D’]	 No mechanical damage.
Load Life	 Max. ∆R ± [5% + R05]
[Test method no. 108A of MIL 202F]	 No mechanical damage
MECHANICAL SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
The design engineer is cautioned that these graphs are general in nature solely provided for his general guidance for selection of the
required power rating and resistance of the device to be used for circuit protection.
It is essential that this must be validated in actual trials and HTR will be pleased to provide the necessary samples for validation and
homologation.
Please suffix the HTR type with the alphabet‘I’when a pulse version of the device is required.
PARAMETER/PERFORMANCE TEST&TEST METHOD	 PERFORMANCE REQUIREMENTS
PARAMETER/PERFORMANCE TEST&TEST METHOD	 PERFORMANCE REQUIREMENTS
	 Series	 Type	 Packing	 Resistance Value	 Tolerance
	 VHIA	 5AC / 5AC*	 Bulk 5AC / 5AC*	 100R	 J
			 Tape & Ammo 5ACT / 5AC*T				
			 Tape & Reel 5ACTR / 5AC*TR	
ORDERING INFORMATION
WIRE WOUND
RESISTORS
SILICONE
COATED TYPE
VHIA
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016

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VHIA - WIRE WOUND RESISTORS SILICONE COATED TYPE

  • 1. Flame Retardant Thermocoat Tin Plated Copper Clad Steel-Copper Weld® Alloy Resistance Wire Wound To Specific Parameters On High Thermal Conductivity Ceramic Core Fully Welded Construction WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA SERIES HIGH SURFACE TEMPERATURE Power Silicone“Thermo Coat” Wire Wound Resistors Industrial / Professional Applications • Flame retardant coating compatible with UL standards • Small Size : Power Ratio. • 0.5W to 20 Watts (at 40°C) • Tolerances as close as 1%. • R01 to 120K. • TCR as low as +20ppm/°C available depending on application and resistance value. • Pulse applications as per IEC 61000-4-5. e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016 Asper AEC-Q200
  • 2. PHYSICAL CONFIGURATION 0.5 MC 0.5W 7.0 2.7 38 0.5 30 R10 1K6 0.21 1 MC 1W 10.9 3.2 38 0.5 30 R10 4K0 0.36 1 AC 1W 11.50 4.5 38 0.8 35 R01 6K2 0.75 2.5 C 2.5W 13.0 5.5 38 0.8 35 R01 10K 1.2 2.5 C1 2.5W 13.0 5.5 38 1.0 35 R01 10K 1.8 3 MC 3W 12.5 5.1 38 0.8 35 R01 7K6 0.8 3 C 3W 15.2 6.0 38 0.8 40 R01 14K 1.2 4 C 4W 16.2 6.9 38 1.0 40 R01 15K 2.0 4 AC 4W 16.5 5.5 38 0.8 40 R01 11K 1.25 4 MC 4W 13.2 5.5 38 0.8 35 R01 10K 1.0 4 CL 4W 23.0 7.2 38 0.8 45 R01 33K 2.9 5 AC 5W 17.5 7.5 38 0.8 40 R01 29K 1.8 5 C1 5W 23.5 8.7 38 1.0 45 R01 47K 3.6 5 C 5W 23.5 8.7 38 0.8 45 R01 47K 3.1 7 AC 7W 25.5 7.5 38 0.8 45 R01 39K 3.6 7 C1 7W 32.5 9.5 38 1.0 55 R10 68K 5.3 10 AC 10W 44.0 8.5 38 0.8 65 R10 88K 6.9 10 C1 10W 44.0 9.8 38 1.0 65 R10 100K 8.3 10 C 10W 44.0 9.8 38 0.8 65 R10 100K 7.3 13 C1 13W 47.0 10.0 38 1.0 70 R10 100K 7.6 15AC 15W 50.0 10.0 38 0.8 70 R10 100K 8.2 15AC1 15W 50.0 10.0 38 1.0 70 R10 100K 8.6 20AC 20W 67.0 10.0 38 0.8 90 R10 120K 11.5 20AC1 20W 67.0 10.0 38 1.0 90 R10 120K 12.0 TYPE POWER RATING at 40°C (Ambient) L (max) D (max) l ±1.5 d ±0.05 LM ±1 DIMENSIONS (mm) RESISTANCE RANGE min max TYPICAL WT. PER PC (gms) ◊ For non-inductive types and for resistance values < 1R0 + 0.8mm allowed ⊕ For resistance values less than R10 & tolerance less than ±2% please measure resistance over centered length LM. Note : 1. The standard terminals in this series is tinned Copper Weld®. 2. For Pulse capability please refer to Electrical data / characteristics section. NON-INDUCTIVE RESISTORS Low inductance Aryton - Perry winding type resistors are available in this series. For non-inductive types reduce maximum resistance values shown to 50% and the continuous working voltage to 70%. ⊕◊ WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA PRE-FORMED LEADS TheresistorsterminationscanbebentandcutasperrequirementsforquickPCBmounting. Please send detailed drawings of the type of preforming required. Rev Date : 22/11/2016
  • 3. Resistor Temperature rise as a function of applied power [See graph displayed ] The graph provided is general in nature and reflects temperature rise of a few selected types for the general guidance of the design engineer. Exact reading for any particular HTR type and specific resistance value can be obtained from factory on request. WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA ELECTRICAL DATA / CHARACTERISTICS Rated Ambient Temperature Full Power dissipation at 40°C and linearly derated down to zero at 350°C -[Refer Derating curve above]. Voltage Rating / Limiting Voltage / Max Working Voltage V = PxR Dielectric Withstanding Voltage / Voltage Proof Max. ∆R ± (1% + R05). No flashover, mechanical [Test method no. 301 of MIL 202F] - Based on limiting damage, arcing or insulation breakdown. voltage x 2 or 500V whichever is applicable. Insulation Resistance > 1000M (dry) > 100M (wet) [Test method no. 302 of MIL 202F] Short Time Overload [Test Method - 5 secs at 5 times rated power for Max. ∆R ± (2% + R05) 3 watts and smaller; 5 secs at 10 times rated power for 4 watts and larger] Resistance Tolerances Available ±10%[K]; ±5% [J]; ±3%[H]; ±2%[G]; ±1%[F] PARAMETER/PERFORMANCE TEST&TEST METHOD PERFORMANCE REQUIREMENTS Pulse Capability : For the design engineer HTR has selected a few types and provided below, vital data in the form of charts / graphs which illustrate two important characteristics of the pulse version of these HTR types. Pulse On Regular Basis - The maximum allowable peak pulse power (W) as a function of pulse duration (T) in seconds. (Repetetive Pulse) - tp repetition time of the pulses / ti - impulse time-duration of pulse. 1 AC PeakPulsePower(W) Time (Seconds) 1R5 PeakPulsePower(W) 3 MC Time (Seconds) e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016
  • 4. PeakPulsePower(W) 4 AC Time (Seconds) WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA PeakPulsePower(W) 5 AC 7 AC PeakPulsePower(W) Time (Seconds) Time (Seconds) 10 AC PeakPulsePower(W) Time (Seconds) e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016
  • 5. WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA 1 AC 3 MC Pulse Capability - Energy (J) as a function of R (W) (Single Pulse) J J 4 AC J e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016
  • 6. 5 AC 7AC 10 AC J J J WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016
  • 7. 1. RoHS version - 0.5 MC * 2. Non inductive winding - N 0.5 MC 3. Impulse type - 0.5 MC I 4. Tape & Ammo pack - 0.5 MC T 5. Tape & Reel pack - 0.5 MC TR Taping : Types 0.5MC, 1MC, 1AC, 4C, 3C, 3MC, 4MC, 2.5C1, 2.5C, 5C1, 5AC, 5C, 7AC, 4CL, 7C1, 10AC, 10C, 10C1, 15AC, 15AC1 are available in taped form. Please refer Tape / Ammo specifications. Tape / Reel on request. Pull test / Robustness of Terminations No mechanical damage [Force supplied from 2 to 4.5 Kgs depending on size] Solderability Continuous and satisfactory [Test method no. 208F of MIL 202F] ∆R < ± [1% + R05] Temperature Co-efficient ± 120ppm/°C for < R10; ± 80ppm/°C for < 1R0; [Test method 304 of MIL 202F] ± 60ppm/°C for < 100R; ± 90ppm/°C or [TCR figures given are based on the usage of normally ± 30ppm/°Cfor>100R, depending on wire selected effective resistance elements and can be significantly lowered on request] Damp Heat (Steady State) Max. ∆R ± [5% + R05] [Test method no. 103B of MIL 202F and test condition‘D’] No mechanical damage. Load Life Max. ∆R ± [5% + R05] [Test method no. 108A of MIL 202F] No mechanical damage MECHANICAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS The design engineer is cautioned that these graphs are general in nature solely provided for his general guidance for selection of the required power rating and resistance of the device to be used for circuit protection. It is essential that this must be validated in actual trials and HTR will be pleased to provide the necessary samples for validation and homologation. Please suffix the HTR type with the alphabet‘I’when a pulse version of the device is required. PARAMETER/PERFORMANCE TEST&TEST METHOD PERFORMANCE REQUIREMENTS PARAMETER/PERFORMANCE TEST&TEST METHOD PERFORMANCE REQUIREMENTS Series Type Packing Resistance Value Tolerance VHIA 5AC / 5AC* Bulk 5AC / 5AC* 100R J Tape & Ammo 5ACT / 5AC*T Tape & Reel 5ACTR / 5AC*TR ORDERING INFORMATION WIRE WOUND RESISTORS SILICONE COATED TYPE VHIA e : info@htr-india.com www.htr-india.com Rev Date : 22/11/2016