V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Bulk Metal(R) Z-Foil Chip Resistors for Use in Hybrid Circuits with TCR of 0.05 ppm/C, Tolerance to 0.005 %, and Load Life Stability of 0.01 % for 10 000 h FIGURE 1 - TRIMMING CHIP RESISTORS V5X5Z Trim Points Gold Plated Pads V15X5Z Gold Plated Pads FIGURE 2 - POWER DERATING CURVE Discrete chips suitable for working temperatures of up to + 200 C are available on request. + 70 C - 55 C Rated Power (%) 100 75 50 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (C) The typical pattern and trimming illustrations show that the V5X5Z resistor has 16 trimming points, and the V15X5Z has 20. These trimming points are arranged around the chip periphery and are clearly indicated. Trimming to the desired resistance value and tolerance is accomplished by cutting the trim points, thereby producing specific incremental changes in the chip's resistance value relative to the original prevalue; up to + 20 % for the V5X5Z, + 30 % for the V15X5Z (not all trim points need be used; the R necessary to adjust the pre-value to the desired final value dictates which trim points need to be used). Monitoring of circuit output while "actively" trimming readily permits adjustment of the chip to 0.005 %. Actual trimming charts are supplied on request for all images. Vishay precision chip resistors offer an order of magnitude of improvement over other chip resistors in hybrid applications. With a maximum Temperature Coefficient of Resistance (TCR) of 2 ppm/C, selected TCR tracking to 0.5 ppm/C and factory supplied resistance tolerances to 0.01 %, they provide the user with accuracy and stability not available in other chip resistor products. If desired they can be user trimmed to any value within 0.005 %, where the value remains stable after trimming. Load life stability is 0.05 % R maximum under full rated power for 2000 h at + 70 C. Document Number: 63189 Revision: 13-Jan-11 FEATURES * Temperature coefficient of resistance (TCR): 0.05 ppm/C typical (0 C to + 60 C) 0.2 ppm/C typical (- 55 C to + 125 C, + 25 C ref.) TCR tracking: to 0.5 ppm/C (1)(2) * TCR characteristic is accomplished automatically without selection and regardless of the date of manufacture - even if years apart * Hybrid chips with Z-Foil are also available for high temperature applications, please contact us for more details * Resistance tolerance: Absolute: to 0.01 % (user trimmable to 0.005 %) Match: to 0.01 % * Power rating: 50 mW to 150 mW at + 70 C * Load life stability: 0.01 % at + 70 C, 10 000 h at rated power * Resistance range: 50 to 30 k (see table 2) * Vishay Foil resistors are not restricted to standard values; specific "as required" values can be supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K) * Short time overload: 0.02 % * Electrostatic discharge (ESD) up to 25 000 V * Non-inductive, non-capacitive design * Rise time: 1 ns effectively no ringing * Thermal stabilization time < 1 s (nominal value achieved within 10 ppm of steady state value) * Current noise: 0.010 VRMS/V of applied voltage (< - 40 dB) * Non-inductive: < 0.08 H * Pattern design minimizing hot spots The Vishay precision trimming system allows for adjustment to precise resistance values without concern over mechanical override and control problems encountered in laser or air abrade trimming of solid geometry resistance patterns. This ability to trim resistor chips to tolerance levels never before available to hybrid manufacturers, now gives a project manager the ability to increase the value-added level of their hybrid services. More of the profit thus available can be retained within the facility. Now, instead of buying precision resistors in separate packages or modules (which require additional PC board real estate) and integrating them into a system, the project manager can utilize Vishay precision resistor chips or matched sets to manufacture the entire hybrid circuit in-house. Eliminates the need to "pin-out" for precision resistor requirements because the precision resistors are inside - part of the hybrid microcircuit design. Vishay precision chip resistors are available either factorytrimmed to exact resistance values (option T) or ready for user trimming (option U); user trimming can be done either before or after bonding - using standard epoxies - onto the hybrid circuit substrate using standard laser, air abrade, or manual adjustment techniques. However care should be taken that no carbonization occurs when laser trimming. For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com 1 V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors TABLE 1 - TOLERANCE AND TCR VS. RESISTANCE VALUE(1) VALUE () STANDARD TOLERANCE (%) 500 to 30K 0.01 100 to < 500 0.02 50 to < 100 0.02 TYPICAL TCR AND MAX SPREAD - 55 C to + 125 C, + 25 C Ref. (ppm/C)(2) 0.2 1.8 0.2 2.8 Note (1) For tighter performances or high temperature applications, please contact application engineering. (2) The TCR results show 4 terminal measurements. To view TCR results for 2 terminal measurements and for different gold wire lengths, refer to the nomogram on page 6. FIGURE 3 - Z-FOIL TYPICAL RESISTANCE/ TEMPERATURE CURVE + 500 + 400 + 300 + 200 + 100 R 0 R (ppm) - 100 - 200 0.05 ppm/C - 0.1 ppm/C 0.1 ppm/C - 300 - 400 0.14 ppm/C - 0.16 ppm/C 0.2 ppm/C - 500 - 55 - 25 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (C) and TCR Chord Slopes for Different Temperature Ranges FIGURE 4 - DIMENSIONS in inches (millimeters) 0.020 0.005 (0.508 0.127) 0.050 0.005 (1.27 0.127) 0.150 0.005 (3.81 0.127) V15X5Z ( 0.483 +0.025 - 0.102 ) 0.005 0.004 (1.27 0.102) 0.001 0.029 + - 0.004 0.050 0.005 (1.27 0.127) ( 0.737 +0.025 - 0.102 ) Square 0.008 (0.203) Nominal 0.008 (0.203) Nominal www.vishayfoilresistors.com 2 V5X5Z 0.034 (0.864) 0.008 Nominal (0.203) Nominal 0.050 0.005 (1.27 0.127) 0.001 0.019 + - 0.004 0.020 0.005 (0.508 0.127) For any questions, contact: foil@vishaypg.com Document Number: 63189 Revision: 13-Jan-11 V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors TABLE 2 - PRECISION CHIP RESISTOR SPECIFICATIONS Resistance range 50 to 5 k (model V5X5Z) 50 to 30 k (model V15X5Z) TCR (- 55 C to + 125 C, + 25 C Ref. (ppm/C) See Table 1 Trimming range (Approximate adjustment capability) 0 to 1.2 x nominal prevalue (V5X5Z)* 0 to 1.3 x nominal prevalue (V15X5Z) Note * The V5X5Z chips are being gradually redesigned for a higher trimming factor 1.3 or more instead of 1.2. For information about the availability of a specific resistance value, contact the factory. Resistance tolerance Option T (trimmed to value at Vishay)* 0.01 %; 0.02 %; 0.05 %; 0.1 %; 0.25 %; 0.5 %; 1 %; 5 % Option U (for user trimming to any value within 0.005 %) G.F. = Good for values Note * See table 1 for resistance/tolerance limits Power rating (at + 70 C ambient temperature), (see figure 4) V5X5Z: 0.05 W (15 V maximum) V15X5Z: 0.1 W (50 V maximum) High frequency operation Rise time Inductance Capacitance 1 ns without ringing 0.1 H maximum; 0.08 H typical 1.0 pF maximum; 0.5 pF typical Current noise < 0.010 VRMS/V of applied voltage (< - 40 dB) Voltage coefficient < 0.1 ppm/V Working voltage 15 V (model V5X5Z) 50 V (model V15X5Z) Termination pads Gold: 50 " to 100 " thick TABLE 3 - ENVIRONMENTAL PERFORMANCE COMPARISON TYPICAL VISHAY MAXIMUM Test group I Thermal shock 0.02 % 0.04 % Test group II Low temperature operation Short time overload High temperature exposure Resistance to bonding exposure 0.005 % 0.02 % 0.02 % 0.02 % 0.01 % 0.04 % 0.05 % 0.05 % Test group III Moisture resistance 0.03 % 0.1 % Test group IV (Load Life Stability) 2000 h at + 70 C 10 000 h at + 70 C 0.005 % 0.01 % 0.015 % 0.05 % Notes (1) TCR tracking is a measure of the similarity of resistance value change in two or more resistors which are undergoing the same temperature changes. Tracking could be expressed as the difference in the temperature coefficients of the resistors, expressed in ppm/C as (R1/R1 - R2/R2) x 10-6/T C. (2) Selected TCR tracking is available for specially ordered lots of resistors. The selected TCR tracking can be 3, 2, 1 and as close as 0.5 ppm/C throughout the full temperature range. Should close TCR tracking be required for differing resistance values, contact the factory. Document Number: 63189 Revision: 13-Jan-11 For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com 3 V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors To acquire a precision resistance value, the Bulk Metal Foil chip is trimmed by selectively removing built-in "shorting bars." To increase the resistance in known increments, marked areas are cut, producing progressively smaller increases in resistance. This method reduces the effect of "hot spot" and improves the long term stability of the hybrid chips. FIGURE 5 - TRIMMING TO VALUES (conceptual illustration) Current Path Before Trimming Interloop Capacitance Reduction in Series Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Change in Current Direction Note: Foil shown in black, etched spaces in white TABLE 4 - GLOBAL PART NUMBER INFORMATION (trimmed option) (1)(2) NEW GLOBAL PART NUMBER: Y4033249R000Q0W (preferred part number format) DENOTES PRECISION VALUE CHARACTERISTICS Y R= K = k 0 = standard 1 to 999 = custom Y 4 0 3 PRODUCT CODE 3 2 4 9 R 0 0 0 Q 0 W RESISTANCE TOLERANCE PACKAGING T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % J = 5.0 % W = waffle pack Trimmed (2): 4033 = V5X5ZT 4034 = V15X5ZT FOR EXAMPLE: ABOVE GLOBAL ORDER Y4033 249R000 Q 0 W: TYPE: V5X5Z trimmed VALUE: 249.0 ABSOLUTE TOLERANCE: 0.02 % PACKAGING: waffle pack HISTORICAL PART NUMBER: V5X5ZT 249R00 Q W (will continue to be used) V5X5ZT MODEL V5X5ZT V15X5ZT 249R00 Q W OHMIC VALUE RESISTANCE TOLERANCE 249R00 = 249.0 T = 0.01 % Q = 0.02 % A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1.0 % J = 5.0 % PACKAGING W = waffle pack Notes (1) (2) For non-standard requests, please contact application engineering. VISHAY to supply chips trimmed to the purchaser's exact resistance and tolerance specifications, ready for insertion into a hybrid microcircuit with no further processing other than bonding and termination. Specify exact resistance value(s) and tolerance(s). www.vishayfoilresistors.com 4 For any questions, contact: foil@vishaypg.com Document Number: 63189 Revision: 13-Jan-11 V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors TABLE 5 - GLOBAL PART NUMBER INFORMATION (untrimmed option) (1)(2) NEW GLOBAL PART NUMBER: Y4036759R0000W (preferred part number format) DENOTES PRECISION GOOD FOR VALUE (2) PACKAGING Y R= K = k W = waffle pack Y 4 0 3 6 7 5 9 R 0 PRODUCT CODE 0 0 0 W CHARACTERISTICS Untrimmed (2): 4036 = V5X5ZU 4037 = V15X5ZU 0 = standard 1 to 999 = custom FOR EXAMPLE: ABOVE GLOBAL ORDER Y4036 759R000 0 W: TYPE: V5X5Z untrimmed GOOD FOR VALUE: 759.0 PACKAGING: waffle pack HISTORICAL PART NUMBER: V5X5ZU 759R00 W (will continue to be used) V5X5ZU 759R00 W MODEL GOOD FOR VALUE PACKAGING V5X5ZU V15X5ZU 759R00 = 759.0 W = waffle pack Notes (1) (2) For non-standard requests, please contact application engineering. To order user trimmable chips specify the final resistance value desired. Document Number: 63189 Revision: 13-Jan-11 For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com 5 V5X5Z, V15X5Z (Z-Foil) Vishay Foil Resistors EFFECTS OF GOLD WIRE The bonding of the gold wires to the chip has an effect on the overall resistance and on the temperature coefficient, according to the length of wire used. The nomogram below shows the effect on both parameters with varying lengths of 0.001" (0.0254 mm) diameter gold wire. NOMOGRAM Change of resistance and TCR due to a length L of gold wire added at wire bonding. thousandths of an inch total length of 2 gold wires of 0.001" diameter 1 R R L 500 360 % 250 160 120 A 90 62.5 40 22.5 ppm 10 50 23 16 10.5 6 4 2.25 1.40 0.82 0.47 0.30 0.16 0.11 600 350 225 130 85 41 25 16 10 6 TCR ppm/C 1900 1100 610 400 230 150 85 53 31 18 11 6.1 4.2 2.3 1.5 0.85 0.50 0.32 0.15 0.10 0.06 0.04 0.02 1.4 R 2.2 3.2 4 6.2 9 12.2 16 25 36 49 64 81 100 144 B EXAMPLE: Total length of wires L = 0.100" (point A on left scale) Resistance of chip R = 200 (point B on right scale) Read on intersection of line as with central scale: On left side - change of resistance: R = 600 ppm R On right side - change of TCR: TCR = + 2.3 ppm/C Nomogram based on the following specs for gold wire: * 1.2 /inch for 0.001" (0.0254 mm) diameter wire * TCR 3900 ppm/C www.vishayfoilresistors.com 6 nominal resistance of chip as measured on its pads () For any questions, contact: foil@vishaypg.com 225 324 400 625 900 1.2K 1.6K 2.5K 3.6K 4.9K 6.4K 8.1K 10K 14.4K 22.5K 32.4K 40K Document Number: 63189 Revision: 13-Jan-11 Legal Disclaimer Notice Vishay Precision Group Disclaimer ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE. Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay Precision Group"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. The product specifications do not expand or otherwise modify Vishay Precision Group's terms and conditions of purchase, including but not limited to, the warranty expressed therein. Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Information provided in datasheets and/or specifications may vary from actual results in different applications and performance may vary over time. Statements regarding the suitability of products for certain types of applications are based on Vishay Precision Group's knowledge of typical requirements that are often placed on Vishay Precision Group products. It is the customer's responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any conduct of Vishay Precision Group. The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document No.: 63999 Revision: 27-Apr-11 www.vishaypg.com 1