帮推荐个带阻三极管啊

只看该作者 · 2009-5-11 11:23

我搞的产品上要用9个2N5551三极管带9个12V的继电器，每个三极管基极要2个电阻，想找个内部带电阻的贴片三极管，大家帮推荐一下啊。

3万 · 2009-5-12 08:22

电阻排成本比单个电阻要高,但比带阻管子要低.
依我所见,最佳方案是都用单个的,继电器边上应该有空间装这几个电阻,再不成可换0603封装的.

火炬-电阻排.pdf → https://bbs.21ic.com/upfiles/img/20095/200951281859559.pdf

MUN5216__IC-ON_LINE[1].CN.pdf → https://bbs.21ic.com/upfiles/img/20094/200942985045304.pdf

只看该作者 · 2009-5-13 08:55

我一直都是在用分立电阻加三极管，只是觉得元件有点多。
用楼上推荐的管子是不是Ic小了点，可靠性要变差啊。我用的是2N5551.再有问下楼上推荐的管子大约多少钱？还有电流大点的吗?

3万 · 2009-5-13 11:50

好象都是50v100mA的,只用12v40mA应该是没问题的,价格么,哼哼,恶贵,少量另售恐怕难找

http://images.google.com.sg/images?sourceid=navclient&hl=zh-CN&rls=GGLG,GGLG:2008-50,GGLG:zh-CN&q=Dual%20Bias%20Resistor%20Transistors&um=1&ie=UTF-8&sa=N&tab=wi

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Mouser Electronics

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Mouser Electronics Product DetailPricingAvailability

Mouser Part #:	863-MUN5214T1G
Mfr. Part #:	MUN5214T1G	Data Sheet
Mfr.:	ON Semiconductor
Description:	100mA 50V BRT NPN
RoHS:	Yes

1:

$0.21

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Mouser Part #:	863-MUN5214DW1T1G
Mfr. Part #:	MUN5214DW1T1G	Data Sheet
Mfr.:	ON Semiconductor
Description:	SS BR XSTR NPN 50V
RoHS:	Yes

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Mouser Part #:	863-MUN5214DW1T1
Mfr. Part #:	MUN5214DW1T1	Data Sheet
Mfr.:	ON Semiconductor
Description:	100mA 50V BRT Dual
RoHS:	No

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Mouser Part #:	863-MUN5214T1
Mfr. Part #:	MUN5214T1	Data Sheet
Mfr.:	ON Semiconductor
Description:	100mA 50V BRT NPN
RoHS:	No

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Part #Mfg. Part #DescriptionIn StockLinkUnit Price

MUN5214DW1T1GOSCT-ND	MUN5214DW1T1G	TRANS BRT NPN DUAL 50V SOT-363	Yes	Buy	1: .35, 10: .204
MUN5214DW1T1GOSDKR-ND	MUN5214DW1T1G	TRANS BRT NPN DUAL 50V SOT-363	Yes	Buy	1: .35, 10: .204
MUN5214DW1T1GOSTR-ND	MUN5214DW1T1G	TRANS BRT NPN DUAL 50V SOT-363	Yes	Buy	3000: .048, 6000: .041
MUN5214T1OSCT-ND	MUN5214T1	TRANS BRT NPN 100MA 50V SOT323	Yes	Buy	10: .21, 100: .1179
MUN5214T1OSTR-ND	MUN5214T1	TRANS BRT NPN 100MA 50V SOT323	Yes	Buy	24000: .017

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Future Electronics

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Mfg.Part #In StockBuyUnit Price (US$)Pkg Qty

ON SEMICONDUCTOR

MUN5214DW1T1G

No

3000+: 0.036

3000

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Manufacturer Part #Manufacturer NameDescriptionRoHSLead TimeAvailablePriceBuy

MUN5214DW1T1G	ON Semiconductor	Trans Digital BJT NPN 50V 100mA 6-Pin SC-88 T/R	5 weeks	Qty: 54,000 Multiple: 3000	$0.037
MUN5214DW1T1	ON Semiconductor	Trans Digital BJT NPN 50V 100mA 6-Pin SC-88 T/R	4 weeks	Multiple: 3000 No Stock. Call 1-800-833-3557	$0.14
MUN5214T1	ON Semiconductor	Trans Digital BJT NPN 50V 100mA 3-Pin SOT-323 T/R		Multiple: 3000 No Stock. Discontinued/Obsolete Call 1-800-833-3557	$0.11
MUN5214T1G	ON Semiconductor	Trans Digital BJT NPN 50V 100mA 3-Pin SOT-323 T/R	5 weeks	Multiple: 1 No Stock. Call 1-800-833-3557	$0.018
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Part #ManufacturerMfg
Part #DescriptionAvail.Pack
DetailsPriceBuy

10N9540	ON SEMICONDUCTOR	MUN5214DW1T1G	Transistor; Collector Emitter Voltage, V(br)ceo:50V; Continuous Collector Current, Ic:0.1A; Base Input Resistor, R1:10000ohm; Base-Emitter Resistor, R2:47000ohm; Resistor Ratio, R1/R2:0.213; Leaded Process Compatible:Yes RoHS Compliant: Yes	6000	Cut tape	1-24: .062, 25-99: .042, 100-249: .036, 250: .031	Buy
88H4935	ON SEMICONDUCTOR	MUN5214T1G	Small Signal Pre-Biased Transistor; Collector Emitter Voltage, V(br)ceo:50V; Base Input Resistor, R1:10kohm; Base-Emitter Resistor, R2:47kohm; Resistor Ratio, R1/R2:0.21; Leaded Process Compatible:Yes; Package/Case:SOT-323 RoHS Compliant: Yes	0	Tape/reel of 1	1 +: .016