Name: 1N5258B
Brand: Fairchild/ON Semiconductor
SKU: 1N5258B
Availability: InStock
Rating: 5 (183 reviews)

1N5258B

Pour Référence Seulement

Référence	1N5258B
Fabricant	Fairchild/ON Semiconductor
Description	DIODE ZENER 36V 500MW DO35
Fiche technique	1N5258B Fiche technique
paquet	DO-204AH, DO-35, Axial
ECAD
En stock	6 080 piece(s)
Prix unitaire	Request a Quote
Délai de mise en œuvre	VÊtre confirmé
Temps de livraison estimé	déc. 25 - déc. 30 (Choisissez l'expédition accélérée)
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Méthodes de paiement
Services de livraison

Nous offrons 1N5258B pour prix compétitif sur le marché mondial, s'il vous plaît envoyez-nous une demande de quota pour les prix. Merci!
Pour traiter votre demande de devis, s'il vous plaît ajouter 1N5258B avec la quantité dans la nomenclature. Heisener.com Ne nécessite pas de toute inscription pour demander un devis de 1N5258B.

Spécifications 1N5258B

Fabricant	Fairchild/ON Semiconductor
Catégorie	Produits à semiconducteurs discrets - Diodes - Zener - Simples
paquet	DO-204AH, DO-35, Axial
ECAD
Séries	-
Tension - Zener (Nom) (Vz)	36V
Tolérance	±5%
Puissance - Max	500mW
Impédance (Max) (Zzt)	70 Ohms
Current - Reverse Leakage @ Vr	100nA @ 27V
Voltage - Forward (Vf) (Max) @ Si	1.2V @ 200mA
Température de fonctionnement	-65°C ~ 200°C
Type de montage	Through Hole
Paquet / cas	DO-204AH, DO-35, Axial
Package de périphérique fournisseur	DO-35

1N5258B fiche technique

1N5258B Packaging

1N5258B FAQ

1. How to order 1N5258B 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 1N5258B is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the 1N5258B. All suppliers must pass our qualification reviews before they can publish their products including 1N5258B on Heisener; we pay more attention to the channels and quality of 1N5258B products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the 1N5258B price and inventory displayed accurate?

The price and inventory of 1N5258B 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 1N5258B?

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 1N5258B we delivered, we will accept the replacement or return of the 1N5258B 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 1N5258B.

(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 1N5258B pin diagram, 1N5258B datasheet?

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

1N5258B Produits Connexes

2220JA250392JXRB16	Knowles Syfer, CAP CER 2220, -, -	Vue
1206J1K02P40BQT	Knowles Syfer, CAP CER 2.4PF 1000V C0G/NP0 1206, 1206 (3216 Metric), -	Vue
C323C183JAG5TA7301	KEMET, CAP CER 0.018UF 250V C0G RADIAL, Radial, -	Vue
ECE-V1JA101P	Panasonic Electronic Components, CAP ALUM 100UF 20% 63V SMD, Radial, Can - SMD, -	Vue
1N5950AP/TR12	Microsemi Corporation, DIODE ZENER 110V 1.5W DO204AL, DO-204AL, DO-41, Axial, -	Vue
MAX3233EEPP+G36	Maxim Integrated, IC TXRX RS-232 DL 20-DIP, 20-DIP (0.300", 7.62mm), -	Vue
8345-SR0064-1A	E-T-A, CIR BRKR MAG-HYDR 1A, -, -	Vue
ST4EH103	Copal Electronics Inc., TRIMMER 10K OHM 0.25W SMD, -, -	Vue
456-V3-232-00-014101	Preci-Dip, CONN HDR 32POS 2.54MM PRESS FIT, -, -	Vue
MS3476W22-21SW	Amphenol Aerospace Operations, CONN PLUG 21POS STRAIGHT SCKT, -, -	Vue
D38999/26FJ4PN-LC	TE Connectivity Deutsch Connectors, CONN PLUG HSNG MALE 56POS INLINE, -, -	Vue
VESD1-S12-D5-SIP	CUI Inc., CONVERTER DC/DC +/-5V OUT 1W, 7-SIP Module, 5 Leads, -	Vue

1N5258B Des garanties

Garanties de service

Nous garantissons la satisfaction du client à 100%.

Notre équipe de vente expérimentée et notre équipe d'assistance technique recourent à nos services pour satisfaire tous nos clients.

Garantie de qualité

Nous fournissons une garantie de 90 jours.

Si les articles que vous avez reçus n'étaient pas de qualité parfaite, nous serions responsables de votre remboursement ou de votre remplacement, mais les articles doivent être retournés dans leur état d'origine.

Chaînes d'approvisionnement mondiales - Ressources de distributeurs fiables et agréées

Référence

Fabricant

Description

Stock

1N5258B-TR

D# 70061650

Vishay Semiconductors

Diode,Zener,Vr 36V,If 200mA,Pkg DO-35,Vf 1.1V,Tj +175degc,Pd 500mW,Ir 3.4mA

RoHS: Not Compliant

Référence	Fabricant	Description	Stock
1N5258B-T D# V36:1790_22975000	Rectron Semiconductor	Zener Diode Single 36V 5% 70Ohm 500mW 2-Pin DO-35 T/R	0
1N5258B D# V72:2272_19768736	EIC Corporation	Zener Diode Single 36V 5% 70Ohm 500mW 2-Pin DO-35 RoHS: Compliant	0
1N5258B-TAP D# V72:2272_16251405	Vishay Intertechnologies	Zener Diode Single 36V 5% 70Ohm 500mW Automotive 2-Pin DO-35 Ammo	0
1N5258B-TP D# V36:1790_06829257	Micro Commercial Components	Zener Diode Single 36V 5% 70Ohm 500mW 2-Pin DO-35 T/R	0
1N5258B R0G D# V36:1790_16935464	Taiwan Semiconductor	Zener Diode Single 36V 5% 70Ohm 500mW 2-Pin DO-35 T/R	0
1N5258B-TR D# V72:2272_17580838	Vishay Intertechnologies	Zener Diode Single 36V 5% 70Ohm 500mW Automotive 2-Pin DO-35 T/R	0

Référence	Fabricant	Description	Stock
1N5258B R0G D# 1N5258B R0G	Taiwan Semiconductor	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Paper T/R - Tape and Reel (Alt: 1N5258B R0G) RoHS: Compliant	0
1N5258B (DO-35) D# 1N5258B (DO-35)	VPT Components	COMMERCIAL ZENER VOLTAGE REGULATOR DIODE - Bulk (Alt: 1N5258B (DO-35)) RoHS: Not Compliant	0
1N5258B-TR D# 1N5258B-TR	Vishay Intertechnologies	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R - Tape and Reel (Alt: 1N5258B-TR) RoHS: Compliant	0
1N5258B TR TIN/LEAD D# 1N5258B TR TIN/LEAD	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R - Tape and Reel (Alt: 1N5258B TR TIN/LEAD) RoHS: Not Compliant	0
1N5258BUR-1 D# 1N5258BUR-1	VPT Components	COMMERCIAL ZENER VOLTAGE REGULATOR DIODE - Bulk (Alt: 1N5258BUR-1) RoHS: Not Compliant	0
1N5258B TR D# 1N5258B TR	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R - Tape and Reel (Alt: 1N5258B TR) RoHS: Not Compliant	0
1N5258B BK TIN/LEAD D# 1N5258B BK TIN/LEAD	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Box - Boxed Product (Development Kits) (Alt: 1N5258B BK TIN/LEAD) RoHS: Not Compliant	0
1N5258B BK PBFREE D# 1N5258B BK PBFREE	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Box - Boxed Product (Development Kits) (Alt: 1N5258B BK PBFREE) RoHS: Compliant	0
1N5258B BK D# 1N5258B BK	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Box - Boxed Product (Development Kits) (Alt: 1N5258B BK) RoHS: Not Compliant	0
IN5258B D# IN5258B	ON Semiconductor	- Bulk (Alt: IN5258B)	0
1N5258B D# 1N5258B	ON Semiconductor	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Bulk - Bulk (Alt: 1N5258B) RoHS: Compliant	0
1N5258B TR PBFREE D# 1N5258B TR PBFREE	Central Semiconductor Corp	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R - Tape and Reel (Alt: 1N5258B TR PBFREE) RoHS: Compliant	0
1N5258B-TAP D# 18M3569	Vishay Intertechnologies	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Ammo - Product that comes on tape, but is not reeled (Alt: 18M3569) RoHS: Compliant	0

Référence	Fabricant	Description	Stock
1N5258BT/B D# 1N5258B_AY_10001	PanJit Semiconductor	Diode Zener Single 36V 5% 0.5W 2-Pin DO-35 Tape Ammo (Alt: 1N5258B_AY_10001) RoHS: Compliant	0
1N5258BT/R D# 1N5258B_R2_10001	PanJit Semiconductor	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R (Alt: 1N5258B_R2_10001) RoHS: Compliant	0
1N5258B-TAP D# 1N5258B-TAP	Vishay Intertechnologies	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Ammo (Alt: 1N5258B-TAP)	0

Référence	Fabricant	Description	Stock
1N5258B	Dickson Electronics Corp		125
1N5258B-TP	Diodes Incorporated		8
1N5258B-TR	Vishay Intertechnologies		6400

Référence	Fabricant	Description	Stock
1N5258B-TP	Micro Commercial Components	DIODE ZENER 36V 500MW DO35	20000
1N5258B-TR	Vishay Siliconix	ZENER DIODE DO35-E2 - Tape and Reel	0
1N5258B_T50R	Fairchild Semiconductor Corporation	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 T/R	0
1N5258B (DO-35)	Microsemi Corporation	ZENER VOLTAGE REGULATOR DIODE DO-35 SD - Bulk	0
1N5258B-TAP	Vishay Semiconductors	ZENER DIODE, 500mW, 36V, DO-35	16515
1N5258B-T	Vishay Semiconductors	ZENER DIODE, 500mW, 36V, DO-35	16635
1N5258B	Vishay Semiconductors	ZENER DIODE, 500mW, 36V, DO-35	16635
1N5258B_T50A	Fairchild Semiconductor Corporation	Diode Zener Single 36V 5% 500mW 2-Pin DO-35 Ammo	0

Référence

Fabricant

Description

Stock

1N5258B_AY_10001

PanJit Group

36V ±, 5% 500mW 0.1uA @27V DO-35 Zener Diodes RoHS

2920

Référence

Fabricant

Description

Stock

1N5258BTR

Vishay Intertechnologies

Zener Diode, 36V V(Z), 5%, 0.5W, Silicon, Unidirectional, DO-35

RoHS: Compliant

Référence	Fabricant	Description	Stock
1N5258B A0G D# 1N5258BA0G-ND	Taiwan Semiconductor Manufacturing Company Limited	DIODE ZENER 36V 500MW DO35	0
1N5258B_T50A D# 1N5258B_T50A-ND	ON Semiconductor	DIODE ZENER 36V 500MW DO35	0
1N5258B-TAP D# 1N5258B-TAPGICT-ND	Vishay Semiconductors	DIODE ZENER 36V 500MW DO35	29905
1N5258B-T D# 1034-1N5258BDICT-ND	Diodes Incorporated	DIODE ZENER 36V 500MW DO35	5115
1N5258B_T50R D# 1N5258B_T50R-ND	ON Semiconductor	DIODE ZENER 36V 500MW DO35	0
1N5258B D# 2156-1N5258B-FS-ND	Rochester Electronics LLC	DIODE ZENER 36V 500MW DO35	15000
1N5258B BK PBFREE D# 1514-1N5258BBKPBFREE-ND	Central Semiconductor Corp	DIODE ZENER 36V 500MW DO35	0
IN5258B D# 2156-IN5258B-ND	Rochester Electronics LLC	1N5258B - ZENER DIODE, 36V, 5%,	1512
1N5258B-TR D# 1N5258BGICT-ND	Vishay Semiconductors	DIODE ZENER 36V 500MW DO35	20958
1N5258B TR PBFREE D# 1514-1N5258BTRPBFREETR-ND	Central Semiconductor Corp	DIODE ZENER 36V 500MW DO35	0
1N5258B-TP D# 1N5258B-TPTR-ND	Micro Commercial Components	DIODE ZENER 36V 500MW DO35	0

Référence

Fabricant

Description

Stock

1N5258B R0G

Taiwan Semiconductor

RoHS: Compliant

pbFree: Yes

1N5258B-TR

Vishay Intertechnologies

1N5258B Series 36 V 500 mW Through Hole Voltage Regulator Diode - DO-35

RoHS: Compliant

pbFree: Yes

Référence	Fabricant	Description	Stock
1N5258BTR	Vishay Intertechnologies	OEM/CM QUOTES ONLY \| NO BROKERS	22000
1N5258BT	DI	OEM/CM QUOTES ONLY \| NO BROKERS	230065
1N5258BA	DIODES INC.	OEM/CM QUOTES ONLY \| NO BROKERS	33000
1N5258BTP	Micro Commercial Components	OEM/CM QUOTES ONLY \| NO BROKERS	11000
1N5258BTAP	Vishay Semiconductors	OEM/CM QUOTES ONLY \| NO BROKERS	22000
1N5258BB	Vishay General Semiconduc	OEM/CM QUOTES ONLY \| NO BROKERS	2200
1N5258BRL	Motorola Semiconductor Products	OEM/CM QUOTES ONLY \| NO BROKERS	6148
1N5258B	ON SEMICONDUCTOR	OEM/CM QUOTES ONLY \| NO BROKERS	277041

Référence

Fabricant

Description

Stock

1N5258B TR

TCI

10000

Référence

Fabricant

Description

Stock

1N5258B-TP

Diodes Incorporated

In stock

Référence

Fabricant

Description

Stock

1N5258B_AY_10001

D# C294816

PanJit Group

2920

Référence

Fabricant

Description

Stock

1N5258B

NTE Electronics Inc

RoHS: Compliant

100

Référence	Fabricant	Description	Stock
1N5258B T&R VISHAY	Vishay Intertechnologies	ZENER DIODE 500mW 36VOLT 3.4mA DO-35 TAPE & REEL ..........ALT: SPECIALIST IN OFFERING DIRECT EQUIVALENT PARTS FOR MOST MAJOR BRANDS TO REDUCE COSTS AND DELIVERY TIMES.	7000
1N5258B T/B MEI	MEI Semi	ZENER DIODE 500mW 36VOLT 3.4mA DO-35 TAPE & AMMO BOX ..........ALT: SPECIALIST IN OFFERING DIRECT EQUIVALENT PARTS FOR MOST MAJOR BRANDS TO REDUCE COSTS AND DELIVERY TIMES.	0
1N5258B T/R MEI	MEI Semi	ZENER DIODE 500mW 36VOLT 3.4mA DO-35 TAPE & REEL ..........ALT: SPECIALIST IN OFFERING DIRECT EQUIVALENT PARTS FOR MOST MAJOR BRANDS TO REDUCE COSTS AND DELIVERY TIMES.	0

Référence

Fabricant

Description

Stock

1N5258B-TR

Vishay Intertechnologies

OEM/CM Immediate delivery

2900

1N5258B

SZXYL

OEM/CM Immediate delivery

8989668

Référence	Fabricant	Description	Stock
1N5258B-TR D# 78-1N5258B	Vishay Intertechnologies	Zener Diodes 36 Volt 0.5 Watt RoHS: Compliant	6734
1N5258B-B D# 583-1N5258B-B	Rectron Semiconductor	Zener Diodes 0.5W 36V 5% RoHS: Compliant	19902
1N5258B TR PBFREE D# 610-1N5258BTR	Central Semiconductor Corp	Zener Diodes Zener 500mW 36V 34.20 to 37.80V RoHS: Compliant	8318
1N5258B-TAP D# 78-1N5258B-TAP	Vishay Intertechnologies	Zener Diodes 36 Volt 0.5W 5% RoHS: Compliant	6468

Référence	Fabricant	Description	Stock
1N5258B	Microchip Technology Inc	Zener Diodes RoHS: Compliant	0
1N5258BUR-1	Microchip Technology Inc	Zener Diodes RoHS: Compliant	0
1N5258B-G	Comchip Technology Corporation Ltd	Zener Diode, 36V V(Z), 5%, 0.5W RoHS: Compliant	0

Référence	Fabricant	Description	Stock
1N5258B-TAP D# XSKDRABV0064521	Vishay Intertechnologies		20000
1N5258B D# MCHP00000041760	Microchip Technology Inc	Zener Diodes	0
1N5258BUR-1 D# MCHP00000041761	Microchip Technology Inc	Zener Diodes	0
1N5258B-G D# CC0000000000277	Comchip Technology Corporation Ltd	Zener Diode, 36V V(Z), 5%, 0.5W	0

Référence	Fabricant	Description	Stock
1N5258B-TAP D# 18M3569	Vishay Intertechnologies	ZENER DIODE, 500mW, 36V, DO-35, Zener Voltage Vz Typ:36V, Power Dissipation Pd:500mW, Diode Case Style:DO-35, Zener Tolerance ±:5%, No. of Pins:2Pins, Operating Temperature Max:175°C, Product Range:-, Breakdown Voltage:36V RoHS Compliant: Yes RoHS: Compliant Min Qty: 1 Container: Cut Tape	0
1N5258B-TR D# 33C2892	Vishay Intertechnologies	Zener Diode,Single, Two Terminal,36V V(Z),5%,DO-35 RoHS Compliant: Yes RoHS: Compliant Min Qty: 30000 Container: TAPE & REEL - FULL	0
1N5258B D# 33C7781	NTE Electronics Inc	ZENER DIODE 36V 5% 1/2 WATT DO-35 CASE RoHS: Not Compliant Min Qty: 1 Container: Bulk	0

Référence	Fabricant	Description	Stock
1N5258B_T50A D# NS-1N5258B_T50A	Fairchild Semiconductor Corporation	OEM/CM ONLY	9404
1N5258B-TP D# NS-1N5258B-TP	Micro Commercial Components	OEM/CM ONLY	1843
1N5258B_T50R D# NS-1N5258B_T50R	Fairchild Semiconductor Corporation	OEM/CM ONLY	2159
1N5258BUR-1 D# NS-1N5258BUR-1	Microsemi Corporation	OEM/CM ONLY	2512
1N5258B-T D# NS-1N5258B-T	Diodes Incorporated	OEM/CM ONLY	40035

Référence

Fabricant

Description

Stock

1N5258B

NTE Electronics Inc

RoHS: Compliant

100

Référence	Fabricant	Description	Stock
1N5258B-TR	Vishay Intertechnologies		5120
1N5258B-B	Vishay Semiconductors	36 V, 0.5 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE	2000
1N5258B	Motorola Semiconductor Products	Zener Diode, Two Terminal, 36 Volt, 5%, DO-204AA	1009
1N5258B-T	Diodes Incorporated	36 V, 0.5 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE, DO-35	2660
1N5258BRL	Motorola Semiconductor Products	36 V, 0.5 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE, DO-35	5000

Référence

Fabricant

Description

Stock

1N5258B

D# 1N5258B

Vishay Intertechnologies

Semiconductor

30000

Référence

Fabricant

Description

Stock

1N5258B-TR

D# 8116046

Vishay Intertechnologies

Vishay, 36V Zener Diode 5% 500 mW Through Hole 2-Pin DO-35, PK

Min Qty: 250

Container: Package

13500

Référence

Fabricant

Description

Stock

1N5258B

ON Semiconductor

Zener Diode, 36V, 5%, 0.5W, Unidirectional, DO-204AH

RoHS: Compliant

15000

IN5258B

Fairchild Semiconductor Corporation

1N5258B - Zener Diode, 36V, 5%, 0.5W, Unidirectional, DO-204AH

RoHS: Not Compliant

pbFree: No

1512

Référence	Fabricant	Description	Stock
1N5258BRL	Motorola Semiconductor Products	OEM/CM ONLY	31518
1N5258B	Fairchild Semiconductor Corporation	OEM/CM ONLY	939322
1N5258BT	Diodes Incorporated	OEM/CM ONLY	214281
1N5258BTR	Vishay Intertechnologies	OEM/CM ONLY	60016
1N5258BA	Diodes Incorporated	OEM/CM ONLY	30016
1N5258BTP	Micro Commercial Components	OEM/CM ONLY	40024
1N5258BTAP	Vishay Intertechnologies	OEM/CM ONLY	4554
1N5258BB	Rectron Semiconductor	OEM/CM ONLY	2016

Référence

Fabricant

Description

Stock

1N5258B

SZXYL

IN stock Immediate delivery

8989653

1N5258B-TR

Vishay Intertechnologies

IN stock Immediate delivery

2915

Référence

Fabricant

Description

Stock

1N5258B-TAP

Vishay Intertechnologies

Zener Diodes 36 Volt 0.5W 5%

pbFree: Pb-Free

1N5258B-TR

Vishay Intertechnologies

Zener Diodes 36 Volt 0.5 Watt

pbFree: Pb-Free

Référence

Fabricant

Description

Stock

1N5258B

D# 2028024677

Rectron Semiconductor

1N5258B RECTRON Diode

24990

Référence

Fabricant

Description

Stock

1N5258B

N/A

shipping today

1N5258B-TR

Vishay Huntington

shipping today

2896

Référence

Fabricant

Description

Stock

1N5258B-TR

D# 35133415

Vishay Intertechnologies

Zener Diode Single 36V 5% 70Ohm 500mW Automotive 2-Pin DO-35 T/R

1N5258B-TAP

D# 31267088

Vishay Intertechnologies

Zener Diode Single 36V 5% 70Ohm 500mW Automotive 2-Pin DO-35 Ammo

Quick Inquiry

1N5258B

Qualité certifiée

L'engagement de Heisener en matière de qualité a façonné nos processus d'approvisionnement, de test, d'expédition et à chaque étape intermédiaire. Cette fondation est à la base de chaque composant que nous vendons.

ISO9001:2015, ICAS, IAF, UKAS