Page 292 - Diodes - Zener - Single | Discrete Semiconductor Products

UDZWTE-1716B
Rohm Semiconductor

DIODE ZENER UMD2

Package: SC-90, SOD-323F

Stock514,200
1N5929BP/TR12
Microsemi Corporation

DIODE ZENER 15V 1.5W DO204AL

Package: DO-204AL, DO-41, Axial

Stock7,776
BZG03C270TR3
Vishay Semiconductor Diodes Division

DIODE ZENER 1.25W DO214AC

Package: DO-214AC, SMA

Stock5,008
CZRER52C2V7-HF
Comchip Technology

DIODE ZENER 2.7V 150MW 0503

Package: 0503 (1308 Metric)

Stock2,016
1SMA5947 R3G
Taiwan Semiconductor Corporation

DIODE, ZENER, 82V, 1500MW, 5%, D

Package: DO-214AC, SMA

Stock5,840
1N4752A R0G
Taiwan Semiconductor Corporation

DIODE, ZENER, 33V, 1000MW, 5%, D

Package: DO-204AL, DO-41, Axial

Stock6,688
BZX584B5V6 RKG
Taiwan Semiconductor Corporation

DIODE, ZENER, 5.6V, 150MW, 2%, S

Package: SC-79, SOD-523

Stock2,544
BZX584B8V2 RSG
Taiwan Semiconductor Corporation

DIODE, ZENER, 8.2V, 150MW, 2%, S

Package: SC-79, SOD-523

Stock5,472
BZT52C11S RRG
Taiwan Semiconductor Corporation

DIODE, ZENER, 11V, 200MW, 5%, SO

Package: SC-90, SOD-323F

Stock4,336
BZT52C4V7-E3-18
Vishay Semiconductor Diodes Division

DIODE ZENER 4.7V 410MW SOD123

Package: SOD-123

Stock5,760
MTZJ39SC R0G
Taiwan Semiconductor Corporation

DIODE, ZENER, 36.93V, 500MW, %,

Package: DO-204AG, DO-34, Axial

Stock3,456
BZX55B39-TAP
Vishay Semiconductor Diodes Division

DIODE ZENER 39V 500MW DO35

Package: DO-204AH, DO-35, Axial

Stock4,352
TZX27C-TAP
Vishay Semiconductor Diodes Division

DIODE ZENER 27V 500MW DO35

Package: DO-204AH, DO-35, Axial

Stock4,928
MTZJ3V9SA
Taiwan Semiconductor Corporation

DO-34, 500MW, 2%, SMALL SIGNAL Z

Package: -

Request a Quote
JANTX1N6346DUS-TR
Microchip Technology

VOLTAGE REGULATOR

Package: -

Request a Quote
BZD27C82PH
Taiwan Semiconductor Corporation

SUB SMA, 1000MW, 6%, ZENER DIODE

Package: -

Request a Quote
1N5923CG
Microsemi Corporation

DIODE ZENER 8.2V 1.25W DO204AL

Package: -

Request a Quote
JANTXV1N5537B-1-TR
Microchip Technology

VOLTAGE REGULATOR

Package: -

Request a Quote
BZX84C5V6-7-G
Diodes Incorporated

DIODE ZENER

Package: -

Request a Quote
GDZ9V1LP3Q-7
Diodes Incorporated

Zener Diode X3-DFN0603-2 T&R 10K

Package: -

Request a Quote

Part Number	Manufacturer	Description	Package	Stock	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
UDZWTE-1716B	Rohm Semiconductor	DIODE ZENER UMD2 Voltage - Zener (Nom) (Vz): - Tolerance: - Power - Max: - Impedance (Max) (Zzt): - Current - Reverse Leakage @ Vr: - Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: SC-90, SOD-323F Supplier Device Package: UMD2	Package: SC-90, SOD-323F	Stock514,200	-	-	-	-	-	-	Surface Mount	SC-90, SOD-323F	UMD2
1N5929BP/TR12	Microsemi Corporation	DIODE ZENER 15V 1.5W DO204AL Voltage - Zener (Nom) (Vz): 15V Tolerance: ±5% Power - Max: 1.5W Impedance (Max) (Zzt): 9 Ohms Current - Reverse Leakage @ Vr: 1µA @ 11.4V Voltage - Forward (Vf) (Max) @ If: 1.2V @ 200mA Operating Temperature: -65°C ~ 150°C Mounting Type: Through Hole Package / Case: DO-204AL, DO-41, Axial Supplier Device Package: DO-204AL (DO-41)	Package: DO-204AL, DO-41, Axial	Stock7,776	±5%	1.5W	9 Ohms	1µA @ 11.4V	1.2V @ 200mA	-65°C ~ 150°C	Through Hole	DO-204AL, DO-41, Axial	DO-204AL (DO-41)
BZG03C270TR3	Vishay Semiconductor Diodes Division	DIODE ZENER 1.25W DO214AC Voltage - Zener (Nom) (Vz): 270V Tolerance: - Power - Max: 1.25W Impedance (Max) (Zzt): 1000 Ohms Current - Reverse Leakage @ Vr: 1µA @ 200V Voltage - Forward (Vf) (Max) @ If: 1.2V @ 500mA Operating Temperature: -65°C ~ 150°C Mounting Type: Surface Mount Package / Case: DO-214AC, SMA Supplier Device Package: DO-214AC	Package: DO-214AC, SMA	Stock5,008	-	1.25W	1000 Ohms	1µA @ 200V	1.2V @ 500mA	-65°C ~ 150°C	Surface Mount	DO-214AC, SMA	DO-214AC
CZRER52C2V7-HF	Comchip Technology	DIODE ZENER 2.7V 150MW 0503 Voltage - Zener (Nom) (Vz): 2.7V Tolerance: ±5% Power - Max: 150mW Impedance (Max) (Zzt): 83 Ohms Current - Reverse Leakage @ Vr: 75µA @ 1V Voltage - Forward (Vf) (Max) @ If: 900mV @ 10mA Operating Temperature: -55°C ~ 150°C Mounting Type: Surface Mount Package / Case: 0503 (1308 Metric) Supplier Device Package: 0503 (1308 Metric)	Package: 0503 (1308 Metric)	Stock2,016	±5%	150mW	83 Ohms	75µA @ 1V	900mV @ 10mA	-55°C ~ 150°C	Surface Mount	0503 (1308 Metric)	0503 (1308 Metric)
1SMA5947 R3G	Taiwan Semiconductor Corporation	DIODE, ZENER, 82V, 1500MW, 5%, D Voltage - Zener (Nom) (Vz): 82V Tolerance: ±5% Power - Max: 1.5W Impedance (Max) (Zzt): 160 Ohms Current - Reverse Leakage @ Vr: 500nA @ 62.2V Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 150°C (TJ) Mounting Type: Surface Mount Package / Case: DO-214AC, SMA Supplier Device Package: DO-214AC (SMA)	Package: DO-214AC, SMA	Stock5,840	±5%	1.5W	160 Ohms	500nA @ 62.2V	-	-55°C ~ 150°C (TJ)	Surface Mount	DO-214AC, SMA	DO-214AC (SMA)
1N4752A R0G	Taiwan Semiconductor Corporation	DIODE, ZENER, 33V, 1000MW, 5%, D Voltage - Zener (Nom) (Vz): 33V Tolerance: ±5% Power - Max: 1W Impedance (Max) (Zzt): 45 Ohms Current - Reverse Leakage @ Vr: 5µA @ 25.1V Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 150°C (TJ) Mounting Type: Through Hole Package / Case: DO-204AL, DO-41, Axial Supplier Device Package: DO-204AL (DO-41)	Package: DO-204AL, DO-41, Axial	Stock6,688	±5%	1W	45 Ohms	5µA @ 25.1V	-	-55°C ~ 150°C (TJ)	Through Hole	DO-204AL, DO-41, Axial	DO-204AL (DO-41)
BZX584B5V6 RKG	Taiwan Semiconductor Corporation	DIODE, ZENER, 5.6V, 150MW, 2%, S Voltage - Zener (Nom) (Vz): 5.6V Tolerance: ±2% Power - Max: 150mW Impedance (Max) (Zzt): 40 Ohms Current - Reverse Leakage @ Vr: 1µA @ 2V Voltage - Forward (Vf) (Max) @ If: 900mV @ 10mA Operating Temperature: 150°C (TJ) Mounting Type: Surface Mount Package / Case: SC-79, SOD-523 Supplier Device Package: SOD-523F	Package: SC-79, SOD-523	Stock2,544	±2%	150mW	40 Ohms	1µA @ 2V	900mV @ 10mA	150°C (TJ)	Surface Mount	SC-79, SOD-523	SOD-523F
BZX584B8V2 RSG	Taiwan Semiconductor Corporation	DIODE, ZENER, 8.2V, 150MW, 2%, S Voltage - Zener (Nom) (Vz): 8.2V Tolerance: ±2% Power - Max: 150mW Impedance (Max) (Zzt): 15 Ohms Current - Reverse Leakage @ Vr: 700nA @ 5V Voltage - Forward (Vf) (Max) @ If: 900mV @ 10mA Operating Temperature: 150°C (TJ) Mounting Type: Surface Mount Package / Case: SC-79, SOD-523 Supplier Device Package: SOD-523F	Package: SC-79, SOD-523	Stock5,472	±2%	150mW	15 Ohms	700nA @ 5V	900mV @ 10mA	150°C (TJ)	Surface Mount	SC-79, SOD-523	SOD-523F
BZT52C11S RRG	Taiwan Semiconductor Corporation	DIODE, ZENER, 11V, 200MW, 5%, SO Voltage - Zener (Nom) (Vz): 11V Tolerance: ±5% Power - Max: 200mW Impedance (Max) (Zzt): 20 Ohms Current - Reverse Leakage @ Vr: 90nA @ 8V Voltage - Forward (Vf) (Max) @ If: 1V @ 10mA Operating Temperature: -65°C ~ 150°C (TJ) Mounting Type: Surface Mount Package / Case: SC-90, SOD-323F Supplier Device Package: SOD-323F	Package: SC-90, SOD-323F	Stock4,336	±5%	200mW	20 Ohms	90nA @ 8V	1V @ 10mA	-65°C ~ 150°C (TJ)	Surface Mount	SC-90, SOD-323F	SOD-323F
BZT52C4V7-E3-18	Vishay Semiconductor Diodes Division	DIODE ZENER 4.7V 410MW SOD123 Voltage - Zener (Nom) (Vz): 4.7V Tolerance: ±5% Power - Max: 410mW Impedance (Max) (Zzt): 70 Ohms Current - Reverse Leakage @ Vr: - Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 150°C Mounting Type: Surface Mount Package / Case: SOD-123 Supplier Device Package: SOD-123	Package: SOD-123	Stock5,760	±5%	410mW	70 Ohms	-	-	-55°C ~ 150°C	Surface Mount	SOD-123	SOD-123
MTZJ39SC R0G	Taiwan Semiconductor Corporation	DIODE, ZENER, 36.93V, 500MW, %, Voltage - Zener (Nom) (Vz): 36.93V Tolerance: ±2% Power - Max: 500mW Impedance (Max) (Zzt): 85 Ohms Current - Reverse Leakage @ Vr: 200nA @ 30V Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 175°C (TJ) Mounting Type: Through Hole Package / Case: DO-204AG, DO-34, Axial Supplier Device Package: DO-34	Package: DO-204AG, DO-34, Axial	Stock3,456	±2%	500mW	85 Ohms	200nA @ 30V	-	-55°C ~ 175°C (TJ)	Through Hole	DO-204AG, DO-34, Axial	DO-34
BZX55B39-TAP	Vishay Semiconductor Diodes Division	DIODE ZENER 39V 500MW DO35 Voltage - Zener (Nom) (Vz): 39V Tolerance: ±2% Power - Max: 500mW Impedance (Max) (Zzt): 90 Ohms Current - Reverse Leakage @ Vr: 100nA @ 30V Voltage - Forward (Vf) (Max) @ If: 1.5V @ 200mA Operating Temperature: -65°C ~ 175°C Mounting Type: Through Hole Package / Case: DO-204AH, DO-35, Axial Supplier Device Package: DO-35	Package: DO-204AH, DO-35, Axial	Stock4,352	±2%	500mW	90 Ohms	100nA @ 30V	1.5V @ 200mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	DO-35
TZX27C-TAP	Vishay Semiconductor Diodes Division	DIODE ZENER 27V 500MW DO35 Voltage - Zener (Nom) (Vz): 27V Tolerance: - Power - Max: 500mW Impedance (Max) (Zzt): 80 Ohms Current - Reverse Leakage @ Vr: 1µA @ 21V Voltage - Forward (Vf) (Max) @ If: 1.5V @ 200mA Operating Temperature: -65°C ~ 175°C Mounting Type: Through Hole Package / Case: DO-204AH, DO-35, Axial Supplier Device Package: DO-35	Package: DO-204AH, DO-35, Axial	Stock4,928	-	500mW	80 Ohms	1µA @ 21V	1.5V @ 200mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	DO-35
MTZJ3V9SA	Taiwan Semiconductor Corporation	DO-34, 500MW, 2%, SMALL SIGNAL Z Voltage - Zener (Nom) (Vz): 3.9 V Tolerance: ±2% Power - Max: 500 mW Impedance (Max) (Zzt): 100 Ohms Current - Reverse Leakage @ Vr: 5 µA @ 1 V Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 175°C (TJ) Mounting Type: Through Hole Package / Case: DO-204AG, DO-34, Axial Supplier Device Package: DO-34	Package: -	Request a Quote	±2%	500 mW	100 Ohms	5 µA @ 1 V	-	-55°C ~ 175°C (TJ)	Through Hole	DO-204AG, DO-34, Axial	DO-34
JANTX1N6346DUS-TR	Microchip Technology	VOLTAGE REGULATOR Voltage - Zener (Nom) (Vz): 82 V Tolerance: ±1% Power - Max: 500 mW Impedance (Max) (Zzt): 220 Ohms Current - Reverse Leakage @ Vr: 50 nA @ 62 V Voltage - Forward (Vf) (Max) @ If: 1.4 V @ 1 A Operating Temperature: -65°C ~ 175°C (TJ) Mounting Type: Surface Mount Package / Case: SQ-MELF, B Supplier Device Package: B, SQ-MELF	Package: -	Request a Quote	±1%	500 mW	220 Ohms	50 nA @ 62 V	1.4 V @ 1 A	-65°C ~ 175°C (TJ)	Surface Mount	SQ-MELF, B	B, SQ-MELF
BZD27C82PH	Taiwan Semiconductor Corporation	SUB SMA, 1000MW, 6%, ZENER DIODE Voltage - Zener (Nom) (Vz): 82 V Tolerance: ±6.1% Power - Max: 1 W Impedance (Max) (Zzt): 200 Ohms Current - Reverse Leakage @ Vr: 1 µA @ 62 V Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 200 mA Operating Temperature: -55°C ~ 175°C (TJ) Mounting Type: Surface Mount Package / Case: SOD-123 Supplier Device Package: Sub SMA	Package: -	Request a Quote	±6.1%	1 W	200 Ohms	1 µA @ 62 V	1.2 V @ 200 mA	-55°C ~ 175°C (TJ)	Surface Mount	SOD-123	Sub SMA
1N5923CG	Microsemi Corporation	DIODE ZENER 8.2V 1.25W DO204AL Voltage - Zener (Nom) (Vz): 8.2 V Tolerance: ±2% Power - Max: 1.25 W Impedance (Max) (Zzt): 3.5 Ohms Current - Reverse Leakage @ Vr: 5 µA @ 6.5 V Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 200 mA Operating Temperature: -65°C ~ 175°C Mounting Type: Through Hole Package / Case: DO-204AL, DO-41, Axial Supplier Device Package: DO-204AL (DO-41)	Package: -	Request a Quote	±2%	1.25 W	3.5 Ohms	5 µA @ 6.5 V	1.2 V @ 200 mA	-65°C ~ 175°C	Through Hole	DO-204AL, DO-41, Axial	DO-204AL (DO-41)
JANTXV1N5537B-1-TR	Microchip Technology	VOLTAGE REGULATOR Voltage - Zener (Nom) (Vz): 17 V Tolerance: ±5% Power - Max: 500 mW Impedance (Max) (Zzt): 100 Ohms Current - Reverse Leakage @ Vr: 10 nA @ 15.3 V Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 200 mA Operating Temperature: -65°C ~ 175°C Mounting Type: Through Hole Package / Case: DO-204AH, DO-35, Axial Supplier Device Package: DO-204AH (DO-35)	Package: -	Request a Quote	±5%	500 mW	100 Ohms	10 nA @ 15.3 V	1.1 V @ 200 mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	DO-204AH (DO-35)
BZX84C5V6-7-G	Diodes Incorporated	DIODE ZENER Voltage - Zener (Nom) (Vz): - Tolerance: - Power - Max: - Impedance (Max) (Zzt): - Current - Reverse Leakage @ Vr: - Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Request a Quote	-	-	-	-	-	-	-	-	-
GDZ9V1LP3Q-7	Diodes Incorporated	Zener Diode X3-DFN0603-2 T&R 10K Voltage - Zener (Nom) (Vz): 9.1 V Tolerance: ±5% Power - Max: 250 mW Impedance (Max) (Zzt): - Current - Reverse Leakage @ Vr: 500 nA @ 6 V Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: -55°C ~ 150°C (TJ) Mounting Type: Surface Mount Package / Case: 0201 (0603 Metric) Supplier Device Package: X3-DFN0603-2	Package: -	Request a Quote	±5%	250 mW	-	500 nA @ 6 V	-	-55°C ~ 150°C (TJ)	Surface Mount	0201 (0603 Metric)	X3-DFN0603-2
HZ7B2LTA-E	Renesas Electronics Corporation	DIODE ZENER 0.4W Voltage - Zener (Nom) (Vz): - Tolerance: - Power - Max: - Impedance (Max) (Zzt): - Current - Reverse Leakage @ Vr: - Voltage - Forward (Vf) (Max) @ If: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Request a Quote	-	-	-	-	-	-	-	-	-
BZX384-A22X	Nexperia USA Inc.	BZX384-A22/SOD323/SOD2 Voltage - Zener (Nom) (Vz): 22 V Tolerance: ±1% Power - Max: 300 mW Impedance (Max) (Zzt): 25 Ohms Current - Reverse Leakage @ Vr: 50 nA @ 15.4 V Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 100 mA Operating Temperature: 150°C (TJ) Mounting Type: Surface Mount Package / Case: SC-76, SOD-323 Supplier Device Package: SOD-323	Package: -	Request a Quote	±1%	300 mW	25 Ohms	50 nA @ 15.4 V	1.1 V @ 100 mA	150°C (TJ)	Surface Mount	SC-76, SOD-323	SOD-323
1N5230BUR-TR	Microchip Technology	VOLTAGE REGULATOR Voltage - Zener (Nom) (Vz): 4.7 V Tolerance: ±5% Power - Max: 500 mW Impedance (Max) (Zzt): 19 Ohms Current - Reverse Leakage @ Vr: 5 µA @ 2 V Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 200 mA Operating Temperature: -65°C ~ 175°C Mounting Type: Surface Mount Package / Case: DO-213AA Supplier Device Package: DO-213AA	Package: -	Request a Quote	±5%	500 mW	19 Ohms	5 µA @ 2 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	DO-213AA
BZG03B200-HM3-18	Vishay General Semiconductor - Diodes Division	DIODE ZENER 200V 1.25W DO214AC Voltage - Zener (Nom) (Vz): 200 V Tolerance: ±2% Power - Max: 1.25 W Impedance (Max) (Zzt): 500 Ohms Current - Reverse Leakage @ Vr: 1 µA @ 150 V Voltage - Forward (Vf) (Max) @ If: 1.2 V @ 500 mA Operating Temperature: 150°C (TJ) Mounting Type: Surface Mount Package / Case: DO-214AC, SMA Supplier Device Package: DO-214AC (SMA)	Package: -	Request a Quote	±2%	1.25 W	500 Ohms	1 µA @ 150 V	1.2 V @ 500 mA	150°C (TJ)	Surface Mount	DO-214AC, SMA	DO-214AC (SMA)
JANS1N4476D	Microchip Technology	ZENER DIODE Voltage - Zener (Nom) (Vz): 30 V Tolerance: ±1% Power - Max: 1.5 W Impedance (Max) (Zzt): 20 Ohms Current - Reverse Leakage @ Vr: 50 nA @ 24 V Voltage - Forward (Vf) (Max) @ If: 1.5 V @ 1 A Operating Temperature: -65°C ~ 175°C (TJ) Mounting Type: Through Hole Package / Case: DO-204AL, DO-41, Axial Supplier Device Package: DO-41	Package: -	Request a Quote	±1%	1.5 W	20 Ohms	50 nA @ 24 V	1.5 V @ 1 A	-65°C ~ 175°C (TJ)	Through Hole	DO-204AL, DO-41, Axial	DO-41
JANS1N6322	Microchip Technology	ZENER DIODE Voltage - Zener (Nom) (Vz): 8.2 V Tolerance: ±5% Power - Max: 500 mW Impedance (Max) (Zzt): 5 Ohms Current - Reverse Leakage @ Vr: 1 µA @ 6 V Voltage - Forward (Vf) (Max) @ If: 1.4 V @ 1 A Operating Temperature: -65°C ~ 175°C (TJ) Mounting Type: Through Hole Package / Case: B, Axial Supplier Device Package: B, Axial	Package: -	Request a Quote	±5%	500 mW	5 Ohms	1 µA @ 6 V	1.4 V @ 1 A	-65°C ~ 175°C (TJ)	Through Hole	B, Axial	B, Axial
JANTXV1N3315B	Microchip Technology	ZENER DIODE Voltage - Zener (Nom) (Vz): 16 V Tolerance: ±5% Power - Max: 50 W Impedance (Max) (Zzt): 1.6 Ohms Current - Reverse Leakage @ Vr: 10 µA @ 12.2 V Voltage - Forward (Vf) (Max) @ If: 1.5 V @ 10 A Operating Temperature: -65°C ~ 175°C (TJ) Mounting Type: Stud Mount Package / Case: DO-203AB, DO-5, Stud Supplier Device Package: DO-5	Package: -	Request a Quote	±5%	50 W	1.6 Ohms	10 µA @ 12.2 V	1.5 V @ 10 A	-65°C ~ 175°C (TJ)	Stud Mount	DO-203AB, DO-5, Stud	DO-5
JANTX1N6338CUS-TR	Microchip Technology	VOLTAGE REGULATOR Voltage - Zener (Nom) (Vz): 39 V Tolerance: ±2% Power - Max: 500 mW Impedance (Max) (Zzt): 55 Ohms Current - Reverse Leakage @ Vr: 50 nA @ 30 V Voltage - Forward (Vf) (Max) @ If: 1.4 V @ 1 A Operating Temperature: -65°C ~ 175°C (TJ) Mounting Type: Surface Mount Package / Case: SQ-MELF, B Supplier Device Package: B, SQ-MELF	Package: -	Request a Quote	±2%	500 mW	55 Ohms	50 nA @ 30 V	1.4 V @ 1 A	-65°C ~ 175°C (TJ)	Surface Mount	SQ-MELF, B	B, SQ-MELF