Name: SMLJ48A
Brand: Bourns Inc.
SKU: SMLJ48A
Availability: InStock
Rating: 5 (185 reviews)

SMLJ48A

참조 용으로 만 사용

부품 번호	SMLJ48A
제조업체	Bourns Inc.
설명	TVS DIODE 48VWM 77.4VC DO214AB
데이터시트	SMLJ48A 데이터시트
패키지	DO-214AB, SMC
ECAD
재고	153,174 piece(s)
단가	Request a Quote
리드 타임	확인하려면
예상 배달 시간	5월 16 - 5월 21 (신속 배송 선택)
견적 요청

지불 방법
배달 서비스

우리는 세계 시장에서 경쟁력있는 가격에 대한 SMLJ48A를 제공하고, 우리에게 가격에 대한 할당량 요청을 보내 주시기 바랍니다. 고맙습니다!
당신의 RFQ을 처리하기 위해, BOM에 수량 SMLJ48A를 추가하십시오. Heisener.com는 SMLJ48A의 견적을 요청하는 모든 등록이 필요하지 않습니다.

SMLJ48A사양

제조업체	Bourns Inc.
범주	회로 보호 - TVS - 다이오드
패키지	DO-214AB, SMC
ECAD
계열	SMLJ
유형	Zener
단방향 채널	1
양방향 채널	-
전압 - 역 스탠드 오프 (일반)	48V
전압 - 고장 (최소)	53.3V
전압 - 클램핑 (최대) @ Ipp	77.4V
전류 - 피크 펄스 (10 / 1000μs)	38.8A
파워 - 피크 펄스	3000W (3kW)
전력선 보호	No
응용 분야	General Purpose
커패시턴스 @ 주파수	-
작동 온도	-55°C ~ 150°C (TJ)
실장 형	Surface Mount
패키지 / 케이스	DO-214AB, SMC
공급 업체 장치 패키지	SMC (DO-214AB)

SMLJ48A는 데이터 시트

SMLJ48A Packaging

SMLJ48A FAQ

1. How to order SMLJ48A on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that SMLJ48A is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the SMLJ48A. All suppliers must pass our qualification reviews before they can publish their products including SMLJ48A on Heisener; we pay more attention to the channels and quality of SMLJ48A products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the SMLJ48A price and inventory displayed accurate?

The price and inventory of SMLJ48A fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of SMLJ48A?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the SMLJ48A we delivered, we will accept the replacement or return of the SMLJ48A only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of SMLJ48A.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as SMLJ48A pin diagram, SMLJ48A datasheet?

If you need any after-sales service, please do not hesitate to contact us.

SMLJ48A관련 제품

SIT1602BC-72-25E-48.000000E	SiTIME, -20 TO 70C, 2016, 25PPM, 2.5V, 4, -, SMLJ	전망
C324C473F1G5TA	KEMET, CAP CER 0.047UF 100V C0G RADIAL, Radial, SMLJ	전망
DRC3123E0L	Panasonic Electronic Components, TRANS PREBIAS NPN 100MW SSSMINI3, SOT-723, SMLJ	전망
CMF5540K200BERE	Vishay Dale, RES 40.2K OHM 1/2W .1% AXIAL, Axial, SMLJ	전망
1113TR253	Copal Electronics Inc., TRIMMER 25K OHM 0.75W TH, -, SMLJ	전망
MAKK2520HR47M	Taiyo Yuden, FIXED IND 470NH 4A 29 MOHM SMD, Nonstandard, SMLJ	전망
CLP-105-02-G-D-BE-A-TR	Samtec Inc., .050" X .050, -, SMLJ	전망
DAMM51520-72	ITT Cannon, LLC, CONN D-SUB 7POS SOLDER, -, SMLJ	전망
TV06RL-11-5HC	Amphenol Aerospace Operations, CONN PLUG MALE 5POS GOLD CRIMP, -, SMLJ	전망
GMC08DRTN-S734	Sullins Connector Solutions, CONN EDGE DUAL FMALE 16POS 0.100, -, SMLJ	전망
PJRAN1X1U03X	Switchcraft Inc., CONN RCA JACK MONO 3.2MM R/A, -, SMLJ	전망
AOZ1321DI-06	Alpha & Omega Semiconductor Inc., IC LOAD SW HI SIDE P-CH 4DFN, 4-UFDFN Exposed Pad, SMLJ	전망

SMLJ48A 보증

서비스 보증

우리는 100 % 고객 만족을 보장합니다.

경험 많은 영업 팀과 기술 지원 팀이 모든 고객을 만족시키기 위해 서비스를 지원합니다.

품질 보증

우리는 90 일 보증을 제공합니다.

수령 한 품목의 품질이 완벽하지 않은 경우 당사는 환불 또는 교체에 대한 책임을지며 품목은 원래 상태로 반환해야합니다.

글로벌 공급망-신뢰할 수 있고 공인 된 유통 업체 리소스

부품 번호	제조업체	설명	재고
SMLJ48AE3/TR13 D# V36:1790_09108099	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC T/R	0
MXLSMLJ48A D# V36:1790_09120852	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC Bag RoHS: Not Compliant	0
5.0SMLJ48A-TP D# V36:1790_06827810	Micro Commercial Components	TVS Diode Single Uni-Dir 48V 5KW 2-Pin SMC T/R	0
MASMLJ48A D# V36:1790_09115042	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC Bag RoHS: Not Compliant	0
SMLJ48A-TP D# V36:1790_06844106	Micro Commercial Components	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC T/R	0
MXLSMLJ48AE3 D# V36:1790_09120853	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC Bag	0
MSMLJ48A/TR D# V36:1790_21671591	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC T/R RoHS: Not Compliant	0
MSMLJ48A D# V36:1790_09117899	Microchip Technology Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC Bag RoHS: Not Compliant	0
SMLJ48A D# V72:2272_06261380	Bourns Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC	0

부품 번호	제조업체	설명	재고
SMLJ48A-Q D# SMLJ48A-Q	Bourns Inc	SMLJ-Q Transient Voltage Suppressor Diode Single Uni-Directional 48V 300A 3KW 2-Pin DO-214AB T/R - Tape and Reel (Alt: SMLJ48A-Q) RoHS: Compliant	0
MXLSMLJ48AE3 D# MXLSMLJ48AE3	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MXLSMLJ48AE3) RoHS: Compliant	0
SMLJ48AE3/TR13 D# SMLJ48AE3/TR13	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB T/R - Tape and Reel (Alt: SMLJ48AE3/TR13) RoHS: Compliant	0
MXSMLJ48AE3 D# MXSMLJ48AE3	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MXSMLJ48AE3) RoHS: Compliant	0
MXLSMLJ48A D# MXLSMLJ48A	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MXLSMLJ48A) RoHS: Not Compliant	0
SMLJ48A D# SMLJ48A	Bourns Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Tape and Reel (Alt: SMLJ48A) RoHS: Compliant	0
SMLJ48A-QH D# SMLJ48A-QH	Bourns Inc	SMLJ-Q Transient Voltage Suppressor Diode Single Uni-Directional 48V 300A 3KW 2-Pin DO-214AB T/R - Tape and Reel (Alt: SMLJ48A-QH) RoHS: Compliant	0
MASMLJ48AE3 D# MASMLJ48AE3	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MASMLJ48AE3) RoHS: Compliant	0
MSMLJ48AE3 D# MSMLJ48AE3	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MSMLJ48AE3) RoHS: Compliant	0
MXSMLJ48A D# MXSMLJ48A	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MXSMLJ48A) RoHS: Not Compliant	0
MASMLJ48A D# MASMLJ48A	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Bag (Alt: MASMLJ48A) RoHS: Not Compliant	0
MSMLJ48A D# MSMLJ48A/TR	Microchip Technology Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB - Tape and Reel (Alt: MSMLJ48A/TR) RoHS: Not Compliant	0

부품 번호

제조업체

설명

재고

SMLJ48A

D# SMLJ48A

Bourns Inc

Diode TVS Single Uni-Dir 48V 3KW 2-Pin DO-214AB (Alt: SMLJ48A)

RoHS: Compliant

SMLJ48A-Q

D# SMLJ48A-Q

Bourns Inc

SMLJ-Q Transient Voltage Suppressor Diode Single Uni-Directional 48V 300A 3KW 2-Pin DO-214AB T/R (Alt: SMLJ48A-Q)

RoHS: Compliant

부품 번호

제조업체

설명

재고

SMLJ48A

Bourns Inc

351

부품 번호

제조업체

설명

재고

SMLJ48A

D# 26S9024

Bourns Inc

SMD-DIODE SMLJ48A

901

부품 번호	제조업체	설명	재고
MXSMLJ48A	Microsemi Corporation	TVS DIODE 48VWM 77.4VC DO214AB	0
MSMLJ48A	Microsemi Corporation	TRANSIENT VOLTAGE SUPPRESSOR - Bulk	0
SMLJ48A	Bourns Inc	DIODE, TVS, 48V, 3000W, UNI, 5%, SMC	12132
SMLJ48AE3/TR13	Microsemi Corporation	3000W, STAND-OFF VOLTAGE = 48V, ? 5%, UNI-DIR - Tape and Reel	0
MXLSMLJ48AE3	Microsemi Corporation		0
MXSMLJ48AE3	Microsemi Corporation	TVS DIODE 48VWM 77.4VC DO214AB	0
MXLSMLJ48A	Microsemi Corporation		0
SMLJ48A-TP	Micro Commercial Components	TVS DIODE 48VWM 77.4VC SMCJ	0
5.0SMLJ48A-TP	Micro Commercial Components	TVS DIODE 48VWM 77.4VC SMC	3000
MASMLJ48AE3	Microsemi Corporation		0
MASMLJ48A	Microsemi Corporation		0
MSMLJ48AE3	Microsemi Corporation	TRANSIENT VOLTAGE SUPPRESSOR - Bulk	0

부품 번호	제조업체	설명	재고
MSMLJ48A D# 1086-9051-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
SMLJ48A-TP D# SMLJ48A-TPMSCT-ND	Micro Commercial Components	TVS DIODE 48V 77.4V DO214AB	1777
MXLSMLJ48AE3 D# 1086-12604-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
SMLJ48AE3/TR13 D# SMLJ48AE3/TR13-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
MXSMLJ48AE3 D# 1086-15048-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
MXLSMLJ48A D# 1086-12603-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
SMLJ48A-Q D# SMLJ48A-Q-ND	Bourns Inc	TVS DIODE 48V 77.4V SMC	0
SMLJ48A-QH D# SMLJ48A-QH-ND	Bourns Inc	TVS DIODE 48V 77.4V SMC	0
5.0SMLJ48A-TP D# 5.0SMLJ48A-TPMSCT-ND	Micro Commercial Components	TVS DIODE 48V 77.4V DO214AB	4384
MSMLJ48AE3/TR D# MSMLJ48AE3/TRMS-ND	Microchip Technology Inc	TVS	0
MASMLJ48AE3 D# 1086-6493-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
SMLJ48A D# SMLJ48ABCT-ND	Bourns Inc	TVS DIODE 48V 77.4V SMC	2413
MASMLJ48A/TR D# MASMLJ48A/TRMS-ND	Microchip Technology Inc	HI REL TVS	0
MSMLJ48AE3 D# 1086-9052-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
MXSMLJ48A D# 1086-15047-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
MASMLJ48A D# 1086-6492-ND	Microchip Technology Inc	TVS DIODE 48V 77.4V DO214AB	0
MASMLJ48AE3/TR D# MASMLJ48AE3/TRMS-ND	Microchip Technology Inc	HI REL TVS	0
MSMLJ48A/TR D# MSMLJ48A/TRMS-ND	Microchip Technology Inc	TVS	0

부품 번호

제조업체

설명

재고

SMLJ48A

D# 2211990

Bourns Inc

DIODE, TVS, 48V, 3000W, UNI, 5%, SMC

RoHS: Compliant

Min Qty: 1

Container: Each

6634

부품 번호	제조업체	설명	재고
SMLJ48A-TP	Micro Commercial Components	RoHS: Compliant pbFree: Yes	0
5.0SMLJ48A-TP	Micro Commercial Components	RoHS: Compliant pbFree: Yes	0
SMLJ48AE3/TR13	Microchip Technology Inc	TVS Diodes - Uni-Directional Transient Voltage Suppressors RoHS: Compliant pbFree: Yes	0

부품 번호

제조업체

설명

재고

SMLJ48AE3TR13

Microchip Technology Inc

OEM/CM ONLY

3100

부품 번호	제조업체	설명	재고
SMLJ48A-Q	Bourns Inc	RoHS: Compliant	0
SMLJ48A-QH	Bourns Inc	RoHS: Compliant	0
SMLJ48A	Bourns Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin SMC RoHS: Compliant	0

부품 번호	제조업체	설명	재고
SMLJ48A	Microsemi Corporation	OEM/CM Immediate delivery	887500
SMLJ48A-T	MICROCOMMERCIALCOMPO	OEM/CM Immediate delivery	860000
SMLJ48ATR-13	Microsemi Corporation	OEM/CM Immediate delivery	88000

부품 번호	제조업체	설명	재고
SMLJ48A D# 652-SMLJ48A	Bourns Inc	ESD Suppressors / TVS Diodes 48volts 5uA 38.8 Amps Uni-Dir RoHS: Compliant	7753
5.0SMLJ48A-TP D# 833-5.0SMLJ48A-TP	Micro Commercial Components	ESD Suppressors / TVS Diodes Prot Device, TVS 5000W,77.4V RoHS: Compliant	1402
SMLJ48A-TP D# 833-SMLJ48A-TP	Micro Commercial Components	ESD Suppressors / TVS Diodes 77.4V 3000W 38.8A RoHS: Compliant	2103

부품 번호	제조업체	설명	재고
MXSMLJ48A	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MASMLJ48A	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MSMLJ48A	Microchip Technology Inc	TVS RoHS: Compliant	0
MXLSMLJ48AE3	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MXSMLJ48AE3	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MASMLJ48AE3	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
SMLJ48AE3/TR13	Microchip Technology Inc	TVS RoHS: Compliant	0
MSMLJ48AE3/TR	Microchip Technology Inc	TVS RoHS: Compliant	0
MASMLJ48A/TR	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MXLSMLJ48A	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MSMLJ48AE3	Microchip Technology Inc	TVS RoHS: Compliant	0
MASMLJ48AE3/TR	Microchip Technology Inc	Hi Rel TVS RoHS: Compliant	0
MSMLJ48A/TR	Microchip Technology Inc	TVS RoHS: Compliant	0

부품 번호	제조업체	설명	재고
MASMLJ48AE3/TR D# MCHP00000080324	Microchip Technology Inc	Hi Rel TVS	0
MSMLJ48A/TR D# MCHP00000084836	Microchip Technology Inc	TVS	0
MSMLJ48AE3 D# MCHP00000084837	Microchip Technology Inc	TVS	0
MASMLJ48A D# MCHP00000080321	Microchip Technology Inc	Hi Rel TVS	0
MSMLJ48A D# MCHP00000084835	Microchip Technology Inc	TVS	0
MXSMLJ48AE3 D# MCHP00000091710	Microchip Technology Inc	Hi Rel TVS	0
SMLJ48AE3/TR13 D# MCHP00000094645	Microchip Technology Inc	TVS	0
MXLSMLJ48AE3 D# MCHP00000089013	Microchip Technology Inc	Hi Rel TVS	0
MASMLJ48AE3 D# MCHP00000080323	Microchip Technology Inc	Hi Rel TVS	0
MXLSMLJ48A D# MCHP00000089012	Microchip Technology Inc	Hi Rel TVS	0
MSMLJ48AE3/TR D# MCHP00000084838	Microchip Technology Inc	TVS	0
MXSMLJ48A D# MCHP00000091709	Microchip Technology Inc	Hi Rel TVS	0
MASMLJ48A/TR D# MCHP00000080322	Microchip Technology Inc	Hi Rel TVS	0

부품 번호

제조업체

설명

재고

SMLJ48A-Q

D# 52AC7246

Bourns Inc

DIO TVS VWM 48V 3kW UNIDIR SMC / Tape & Reel - 13" reel

RoHS: Not Compliant

Min Qty: 6000

Container: Bulk

SMLJ48A

D# 44W8526

Bourns Inc

Transient Voltage Suppressor, TVS, SMLJ Series, Unidirectional, 48 V, DO-214AB, 2, 53.3 V RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Bulk

6620

부품 번호	제조업체	설명	재고
MASMLJ48A D# NS-MASMLJ48A	Microsemi Corporation	OEM/CM ONLY	1098
MSMLJ48AE3 D# NS-MSMLJ48AE3	Microsemi Corporation	OEM/CM ONLY	1168
SMLJ48A D# NS-SMLJ48A	Bourns Inc	OEM/CM ONLY	13023
MXSMLJ48A D# NS-MXSMLJ48A	Microsemi Corporation	OEM/CM ONLY	1185
SMLJ48A-TP D# NS-SMLJ48A-TP	Micro Commercial Components	OEM/CM ONLY	3026
MSMLJ48A D# NS-MSMLJ48A	Microsemi Corporation	OEM/CM ONLY	1178
MXLSMLJ48AE3 D# NS-MXLSMLJ48AE3	Microsemi Corporation	OEM/CM ONLY	1099
SMLJ48AE3/TR13 D# NS-SMLJ48AE3/TR13	Microsemi Commercial Components Group	OEM/CM ONLY	1563
MXSMLJ48AE3 D# NS-MXSMLJ48AE3	Microsemi Corporation	OEM/CM ONLY	1159
MASMLJ48AE3 D# NS-MASMLJ48AE3	Microsemi Corporation	OEM/CM ONLY	1165
5.0SMLJ48A-TP D# NS-5.0SMLJ48A-TP	Micro Commercial Components	OEM/CM ONLY	7237
MXLSMLJ48A D# NS-MXLSMLJ48A	Microsemi Corporation	OEM/CM ONLY	1131

부품 번호	제조업체	설명	재고
SMLJ48A-Q	Bourns Inc	RoHS: Compliant	0
SMLJ48A-QH	Bourns Inc	RoHS: Compliant	0
SMLJ48A	Bourns Inc	Diode TVS Single Uni-Dir 48V 3KW 2-Pin SMC RoHS: Compliant	0

부품 번호

제조업체

설명

재고

SMLJ48A-TP

Micro Commercial Components

3000 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AB

175

부품 번호

제조업체

설명

재고

SMLJ48ATP

Micro Commercial Components

OEM/CM ONLY

2719

5.0SMLJ48ATP

Micro Commercial Components

OEM/CM ONLY

3095

부품 번호	제조업체	설명	재고
SMLJ48A-T	MICROCOMMERCIALCOMPO	IN stock Immediate delivery	859985
SMLJ48ATR-13	Microsemi Corporation	IN stock Immediate delivery	87985
SMLJ48A	Microsemi Corporation	IN stock Immediate delivery	887485

부품 번호

제조업체

설명

재고

SMLJ48A-Q

Bourns Inc

ESD Suppressors / TVS Diodes 48volts 3kW 5% Uni-Dir. AEC-Q101

pbFree: Pb-Free

SMLJ48A-QH

Bourns Inc

ESD Suppressors / TVS Diodes 48volts 3kW 5% Uni-Dir. AEC-Q101

pbFree: Pb-Free

부품 번호

제조업체

설명

재고

SMLJ48ATR-13

Microsemi Corporation

shipping today

87999

SMLJ48A

Micro Commercial Components

shipping today

88999

부품 번호	제조업체	설명	재고
SMLJ48A D# 29412229	Bourns Inc	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC	0
5.0SMLJ48A-TP D# 22538426	Micro Commercial Components	TVS Diode Single Uni-Dir 48V 5KW 2-Pin SMC T/R	0
SMLJ48A-TP D# 49580147	Micro Commercial Components	TVS Diode Single Uni-Dir 48V 3KW 2-Pin SMC T/R	0