Deciding what caps to use

Thanks to all who have responded! I had the Nichicon caps in some parts that I purchased earlier so if they were compatible it made sense to use them. Very good information though considering that the caps on MTF's list are obsolete and for novices like me who don't have the knowledge and experience about what is desirable beyond the specs...like the low level hiss in some caps for example.
 
(now complete)

AWX071 c5 220 6 647-UPW1E221MPD

AWR057,8 PWR supply
AWR057,8 c7 1000 50 ceb 647-UPW1H102MHD
AWR057,8 c8 330 50 cea 647-upw1h331mpd
AWR057,8 c9 330 50 cea 647-upw1h331mpd
AWR057,8 c10 330 50 cea 647-upw1h331mpd
AWR057,8 c11 220 16 cea 647-UPW1V221MPD
AWR057,8 c12 220 50 cea 647-upw1h221mpd
AWR057,8 c13 100 50 cea 647-UPW1H101MPD
AWR057,8 c16 220 16 cea 647-UPW1V221MPD
AWR057,8 c17 22 25 cea 647-UPW1h220mdd Any alternate part options? Mouser backordered currently.
AWR057,8 c18 100 16 cea 647-UPW1E101MED
AWR057,8 c19 100 35 cea 647-UPW1H101MPD
AWR057,8 q1 2sd313 512-KSC2073TU
AWR057,8 q2 2sc945 512-KSC2383YTA
AWR057,8 q3 2sd313 512-KSC2073TU
AWR057,8 q4 2sc945 512-KSC2383YTA
AWR057,8 d1 sr3am-4 512-1N5404
AWR057,8 d2 sr3am-4 512-1N5404
AWR057,8 d2 sr3am-4 512-1N5404
AWR057,8 d4 sr3am-4 512-1N5404
AWR057,8 d5 1s1886 512-1n4004
AWR057,8 d6 1s1886 512-1n4004
AWR057,8 d7 1s1886 512-1n4004
AWR057,8 d8 wz-130 512-1N5243B
AWR057,8 d9 wz-140 512-1N5244B



AWM025 PROT
AWM025 c1 0.22 10 cssa 598-DSF050J224
AWM025 c2 0.22 10 cssa 598-DSF050J224
AWM025 c3 330 6 cea 647-upw1c331mpd
AWM025 c4 330 6 cea 647-upw1c331mpd
AWM025 c5 4.7 25 cea 647-UPW1H4R7MDD
AWM025 c6 100 16 cea 647-UPW1E101MED
AWM025 q1 2sc869 512-KSC1845FTA
AWM025 q2 2sc869 512-KSC1845FTA
AWM025 q3 2sc945 only if bad 512-KSC1845FTA
AWM025 q4 2sc945 only if bad 512-KSC1845FTA
AWM025 q5 2sa733 only if bad 512-KSA992FBU
AWM025 q6 2sc945 512-KSC2383YTA
AWM025 q7 2sc1384 512-KSC2690AYS
chassis prot relay 653-LY4F-DC24



AWH033 pwr amp
AWH033 c1 0.33 25 cssa 598-DSF050J334
AWH033 c2 0.33 25 cssa 598-DSF050J334
AWH033 c7 220 6 cea 647-UPW1E221MPD
AWH033 c8 220 6 cea 647-UPW1E221MPD
AWH033 c9 47 35 cea 647-UPW1H470MED
AWH033 c10 47 35 cea 647-UPW1H470MED
AWH033 c19 22 10 cea 647-UPW1a220mdd
AWH033 c20 22 10 cea 647-UPW1a220mdd
AWH033 vr1 100 652-3386F-1-101LF
AWH033 vr2 100 652-3386F-1-101LF
AWH033 vr3 10k 652-3296Y-1-103LF Any alternate part options? Mouser backordered currently.
AWH033 vr4 10k 652-3296Y-1-103LF Any alternate part options? Mouser backordered currently.
AWH033 q1 2sa726 512-KSA992FBU
AWH033 q2 2sa726 512-KSA992FBU
AWH033 q3 2sa726 512-KSA992FBU
AWH033 q4 2sa726 512-KSA992FBU
AWH033 q5 2sc1451 512-KSC3503DSTU
AWH033 q6 2sc1451 512-KSC3503DSTU
AWH033 q7 2sd357 512-KSC2690AYS
AWH033 q8 2sc357 512-KSC2690AYS
AWH033 q9 2sb527 512-KSA1220AYS
AWH033 q10 2sb527 512-KSA1220AYS
AWH033 q11 2sd370 863-MJ21194G
AWH033 q12 2sd370 863-MJ21194G
AWH033 q13 2sb530 863-MJ21193G
AWH033 q14 2sb530 863-MJ21193G

AWG030 CTL AMP
AWG030 c1 1 25 csza 647-UKL1H010KDDANA
AWG030 c2 1 25 csza 647-UKL1H010KDDANA
AWG030 c5 100 16 cea 647-UPW1E101MED
AWG030 c6 100 16 cea 647-UPW1E101MED
AWG030 c9 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c10 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c17 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c18 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c19 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c20 4.7 25 ceanl 647-UKL1H4R7KDDANA
AWG030 c21 47 10 cea 647-UPW1H470MED
AWG030 c22 47 10 cea 647-UPW1H470MED
AWG030 c23 2.2 25 cssa 647-UKL1H2R2MDDANA
AWG030 c24 2.2 25 cssa 647-UKL1H2R2MDDANA
AWG030 c29 100 35 cea 647-UPW1H101MPD
AWG030 q1 2sa726 512-KSA992FBU
AWG030 q2 2sa726 512-KSA992FBU
AWG030 q3 2sc1312 512-KSC1845FTA
AWG030 q4 2sc1312 512-KSC1845FTA
AWG030 q5 2sc1312 512-KSC1845FTA
AWG030 q6 2sc1312 512-KSC1845FTA



AWM066 MIC
AWM066 c2 220 35 cea 647-UPW1V221MPD
AWM066 c3 0.47 16 cssa 598-DSF050J474
AWM066 c6 220 6 cea 647-UPW1E221MPD
AWM066 c7 0.47 50 ceanl 598-DSF050J474
AWM066 q1 2sc1344 512-KSC1845FTA
AWM066 q2 2sc1344 512-KSC1845FTA

AWF011 PHONO
AWF011 c1 1 25 cssa 647-UKL1H010MDDANA
AWF011 c2 1 25 cssa 647-UKL1H010MDDANA
AWF011 c7 330 6 cea 647-upw1c331mpd
AWF011 c8 330 6 cea 647-upw1c331mpd
AWF011 c11 3.3 25 ceanl 647-UKL1H3R3MDDANA
AWF011 c12 3.3 25 ceanl 647-UKL1H3R3MDDANA
AWF011 c17 100 25 cea 647-UPW1H101MPD
AWF011 c18 220 16 cea 647-UPW1V221MPD
AWF011 Q1 2sa725 512-KSA992FBU
AWF011 Q2 2sa725 512-KSA992FBU
AWF011 Q3 2sc1313 512-KSC1845FTA
AWF011 Q4 2sc1313 512-KSC1845FTA
AWF011 Q5 2sc1313 512-KSC1845FTA
AWF011 Q6 2sc1313 512-KSC1845FTA


AWE043 TUNER
AWE043 c25 4.7 25 cea 647-UPW1H4R7MDD
AWE043 c27 10 16 cea 647-UPW1H100MDD
AWE043 c28 0.47 50 cea 598-DSF050J474
AWE043 c33 1 50 cea 647-UPW1H010MDD
AWE043 c38 0.33 10 cssa 598-DSF050J334
AWE043 c39 1 10 cssa 647-UPW1H010MDD
AWE043 c40 0.47 10 cssa 598-DSF050J474
AWE043 c49 0.47 50 cea 598-DSF050J474
AWE043 c50 0.47 50 cea 598-DSF050J474
AWE043 c58 4.7 25 cea 647-UPW1H4R7MDD
AWE043 c59 47 6 cea 647-UPW1H470MED
AWE043 c64 10 16 cea 647-UPW1H100MDD
AWE043 c66 0.1 25 cssa 598-DSF050J Any alternate part options? Mouser obsoleted.
AWE043 c67 220 16 cea 647-UPW1E221MPD
AWE043 c68 100 16 cea 647-UPW1E101MED
AWE043 q8 2sa725 512-KSA992FBU
AWE043 q9 2sa725 512-KSA992FBU
 
Good questions! Nicely formatted!

For "AWR057,8 c17 22 25 cea 647-UPW1h220mdd" the following work fine and are in stock:

647-UPW1H220MDD1TD
647-UPW1H220MDD1TA

For "AWE043 c66 0.1 25 cssa 598-DSF050J" the following work fine (high quality film cap 0.1uF >50VDC 5mm lead spacing) and are in stock:

667-ECQ-E2104KB

For "AWH033 vr3 & vr4 10k 652-3296Y-1-103LF" the following work fine and are in stock:

652-3296Y-1-103 (different metal content in the leads, makes no difference)
652-3296W-1-103LF (same thing except the three leads are in a straight line rather than staggered. You could make this work if you needed to [bend one lead or drill extra hole in PCB])
 
Thanks for the quick response! Your help and advice is greatly appreciated as I am still new at this.

For "AWE043 c66 0.1 25 cssa 598-DSF050J" the following work fine (high quality film cap 0.1uF >50VDC 5mm lead spacing) and are in stock:

667-ECQ-E2104KB

I have learned from reading this forum that it is normal to go up in voltage when picking caps, but the capacitance must remain the same as the original. This cap that you suggested is listed as 250V, and the original was a 25V. Is it normal to go this much higher? I noticed that most of the caps on MTF's list only jump up one size in voltage. Not questioning the choice, only trying to learn more about how to choose the correct cap for a given application.
 
I have learned from reading this forum that it is normal to go up in voltage when picking caps, but the capacitance must remain the same as the original. This cap that you suggested is listed as 250V, and the original was a 25V. Is it normal to go this much higher? I noticed that most of the caps on MTF's list only jump up one size in voltage. Not questioning the choice, only trying to learn more about how to choose the correct cap for a given application.

You can safely go up higher and higher in voltage handling in a cap, just understand that the physical size of the cap increases, too. A 250 VDC cap will work perfectly at only 25 VDC. If you can get a lower voltage cap, say a 50 V or 63 V one, use that instead. In this case, I selected based on exact capacitance match, a film cap, a trusted high quality brand and series (Panasonic), and lead spacing the same as the MTF recommendation. 250 VDC was the lowest one that matched all the other criteria. I could have found a Nichicon or a CD, but I like Panasonic better.

The old recap lists are always going out of date and needing or getting updated. It's good to build up you ability to select your own caps as it is common the one specified long ago isn't available any more or is too expensive and you'll need to find a suitable replacement... replacement.
 
Thanks for your input. Being able to build my own BOM list some day is exactly what I hope to achieve.

One more question if I can: I do not see the two large filter caps listed in MTF's original list. Are these two caps not usually included in the replacement process?
 
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I do not see the two large filter caps listed in MTF's original list. Are these two caps not usually included in the replacement process?

So, you must be talking about c2 and c3, the 6800 uF / 50 VDC pair in the power supply circuit. I don't know why those would be left off the list. They shouldbe included in any recapping.

Since they are in the power supply circuit (and therefore not part of the signal path), you want electrolytic caps that have low ESR and high ripple.

Low ESR means less of the current running through them gets turned into heat (loss) since there is lower "effective series resistance". In power supply caps you want them to be as low ESR as you can get so they rob less of the current going through them.

High ripple is also desirable as the incoming ripple (the leftover unrectified sine wave from the original AC) is smoothed more than lower ripple.

You can sort on ripple or ripple current in Mouser once you get to electrolytic caps. You want the highest... mostly. You'll also want to consider diameter (to best fit your original hole and buckle around the cap) and termination type.

The original caps there might be snap-in or lug (spade style) terminals. Or they made be screw in. You buy the ones you can find that fit and know you can modify the terminals to suit your needs.

One often recommended line of low ESR and high ripple capactiors is Nichicon PW or UPW series. I like those myself. However, they are not available as high as 6800 uF at 50 VDC. So, you might do what I do: look for an electrolyitc cap with 6800 uF or 1-2 sizes larger, 50 VDC or 1-2 voltages higher, and a diameter of (whatever your original caps were) and lower. If you caps were 50mm diamter, you'd look for a replacement cap of 50mm or smaller. You can always wrap something around the caps to make their diameter big enough to fit snuggly in the old buckle. The way I read the Mouser results, if you were a stickler for the original capacitance you might chose 647-LLS1J682MELB since it has the highest ripple 4500mA for less than $5 each.
 
Thanks for your input. Being able to build my own BOM list some day is exactly what I hope to achieve.

I am no means an expert, not compared to an E.E. or any of the other AK'ers here. That being said, here are some posting that may help you build your own ideas and way of building a BOM:

http://www.audiokarma.org/forums/in...ade-bom-part-list.739572/page-4#post-10049700

http://www.audiokarma.org/forums/in...ade-bom-part-list.739572/page-3#post-10032629

Good luck, keep on asking questions, don't get discouraged, and have fun!
 
(now complete)

AWR057,8 PWR supply
AWR057,8 c7 1000 50 ceb 647-UPW1H102MHD This part number is for a capacitor with radial terminals, but the capacitor on the power supply board has axial leads?
AWR057,8 c8 330 50 cea 647-upw1h331mpd
AWR057,8 c9 330 50 cea 647-upw1h331mpd
AWR057,8 c10 330 50 cea 647-upw1h331mpd
AWR057,8 c11 220 16 cea 647-UPW1V221MPD
AWR057,8 c12 220 50 cea 647-upw1h221mpd
AWR057,8 c13 100 50 cea 647-UPW1H101MPD
AWR057,8 c16 220 16 cea 647-UPW1V221MPD
AWR057,8 c17 22 25 cea 647-UPW1h220mdd
AWR057,8 c18 100 16 cea 647-UPW1E101MED
AWR057,8 c19 100 35 cea 647-UPW1H101MPD
AWR057,8 q1 2sd313 512-KSC2073TU
AWR057,8 q2 2sc945 512-KSC2383YTA
AWR057,8 q3 2sd313 512-KSC2073TU
AWR057,8 q4 2sc945 512-KSC2383YTA
AWR057,8 d1 sr3am-4 512-1N5404
AWR057,8 d2 sr3am-4 512-1N5404
AWR057,8 d2 sr3am-4 512-1N5404
AWR057,8 d4 sr3am-4 512-1N5404
AWR057,8 d5 1s1886 512-1n4004
AWR057,8 d6 1s1886 512-1n4004
AWR057,8 d7 1s1886 512-1n4004
AWR057,8 d8 wz-130 512-1N5243B
AWR057,8 d9 wz-140 512-1N5244B

I have already placed the order for all of the parts on the list including the substitutions that you guys suggested to me. I am planning to start with the power supply board, but the replacement capacitor that I received for C7 does not seem correct. The part that I received has Radial terminal leads, but the C7 capacitor on my power supply board has axial leads.

Did I order the wrong part? Can someone help suggest an alternate part number that I can use in place of 647-UPW1H102MHD? Or is their a way to use the radial terminal replacement in place of the original capacitor?

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See my reply in your thread. There may not have been a TVX series available in that value/voltage. I did my 737 with the Radial and it doesn't hurt it at all.
 
I've used 647-TVX1J102MCD, which is 1000uF/63v, but at $4.26 it's not particularly cheap. As Larry said, the part that you received will work.
 
This is the capacitor that I used on my protection board. Currently my SX-737 is running with it just fine.
 
You did not mention what a "737" is, except for solid state. But I would say for any solid state re-cap, don't be afraid to use a few Elna Silmic electrolytics. They are top quality for sound quality. I've used some myself with good results. I got the idea from a capacitor test where the technician could switch in and out four different brands. He used Panasonic, Nichicon, Black Gate, and Elna Silmic. The latter two sounded better than the other two. You only need one or two per channel according to those who actually installed them. FYI.
 
As for using a 250V in a 50v circuit, eventually the cap will "set" somewhat like an old NI-CAD rechargeable battery, and only be able to manage near 50V. An increase of 20% for voltage is probably the best to combat the increase in circuit voltage due to higher than normal (for 1970's) wall voltage now. 63v to 80V would be the max I would recommend in this case. The 250V cap can be used to prove out the circuit or to be used temporarily until the correct voltage with an appropriate increase is procured.
 
changed ly4f to ly2f, the ly4f was enlarged substantially in some sort of omron redesign.
 
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