Buy Myrra transformers - 74000, 74001, 74002, 74003, 74004, 74005, 74010, 74014, 74015, 74020, 74021, 74023, 74087, 74088, 74089, 74030, 74032, 74040, 74043, 74050, 74060, 74070, 74090, 74091, 74092, 74093, 74094, 74095

Myrra High Frequency Ferrite
Power Ferrite Transformers

Series 74000 Flyback Transformers Range

Myrra P/N	Core Size	Maximum Output Power (Watts)	Outputs Vdc nominal voltage
74000	E16	5w	5v	12v
74001	E16	6w	5v
74002	E16	6w	12v
74003	E16	5w	3.3v	5v
74010	E16	12w	5v	12v
74014	E16	12w	24v	24v
74015	E16	12w	5v	15v	24v
74020	EL19	18w	5v	12v
74021	EL19	18w	5v	12v
74023	EL19	16W	3.3v	5v	12v	18v	30v
74030	E25	30w	5v	12v	12v
74032	E25	35w	24v
74040	ETD29	60w	5v	12v	5v	12v
74043	ERL28	60w	3.3v	5v	12v	18v	30v
74050	ETD34	90w	5v	12v	5v	12v
74060	ETD39	140w	5v	12v	5v	12v
74070	ETD44	180w	5v	12v	5v	12v
74080	EF20	24w	12v	12v
74081	EF20	20w	3.3v	5v	12v
74082	EF20	20w	5v	5v
74090	E16	1.5w	5v
74091	E16	1.5w	12v
74092	E16	3.1w	5v
74093	E16	3.1w	12v
74094	E16	9w	5v
74095	E16	9w	12v

Note: "5 volts" outputs can generally be used for 3.3 to 6 volts; "12 volts" outputs can be used for 9 to 16 volts

Transformer Reference		IC Manufacturer	Series & References
74090 74091 74092 74093 74094 74095	No aux. Winding	PI	TNY Series LNK XT Series

74000 74001 74002 74003 74004 74005 74010 74014 74015 74020 74021 74023 74080 74081 74082 74087 74088 74089 74030 74032 74040 74043 74050 74060 74070	With aux. Winding	ONSEMI	NCP 1014 NCP 3065 etc.
		PI	TOP Series LNK Series
		NXP	TEA1530 TEA1351 TEA3065 etc.
		ST	Viper Series
		FAIRCHILD	FAN102 FAN400 FSEZ130 FSEZ1213 etc.
		ON Bright	OB2535 OB2212 OB2361 etc.

Flyback Transformers

Primary / Secondary Insulation ≥ 4000V
Creepage distance Primary / Secondary ≥ 6mm
Construction conforms to IEC950, IEC335, IEC61558-2-16 for reinforced insulation
Exclusively uses UL94-V0 listed materials

Size E16, 2 Outputs: 5 & 12v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 70°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74000	5w	Pri	4 - 6	138	85 - 265Vrms	0.27 Apeak	3900µH
		Aux	2 - 1	16	7 - 14 Vdc	0.1 Adc
		S1	9 - 10	8	3.3 - 7 Vdc	1.2 Adc
		S2	7 - 8	19	8 - 17 Vdc	0.4 Adc

Size E16, Single output: 5 or 12v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 60°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74001	6w	Pri	4 - 6	138	85 - 265Vrms	0.35 Apeak	3000µH
		Aux	2 - 1	20	8 - 16 Vdc	0.1 Adc
		S1	9 - 10	8	3 - 6 Vdc	1.2 Adc
74002	6w	Pri	4 - 6	150	85 - 265Vrms	0.38 Apeak	3000µH
		Aux	2 - 1	22	8.5 - 17 Vdc	0.1 Adc
		S1	9 - 10	24	9 - 18 Vdc	0.5 Adc

Size E16, Dual output: 3.3 + 5v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 60°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74003	6w	Pri	4 - 6	120	85 - 265Vrms	0.3 Apeak	3000µH
		Aux	2 - 1	17	8 - 16 Vdc	0.1 Adc
		S1	9 - 10	5	2 - 4 Vdc	1.8 Adc
		S2	7 - 10	7	3 - 6 Vdc	1.2 Adc

Size E16, One output: 6v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74004	1.7w	Pri	1 - 2	108	85 - 265Vrms	0.28 Apeak	2700µH
		Aux	5 - 4	25	22 Vdc	0.1 Adc
		S	7 - 6	8	6 Vdc	0.5 Adc
		Shield	NC - 2	8

Size E16, One output: 10v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74005	1.7w	Pri	1 - 2	108	85 - 265Vrms	0.28 Apeak	2700µH
		Aux	5 - 4	25	22 Vdc	0.1 Adc
		S	7 - 6	12	10 Vdc	0.2 Adc
		Shield	NC - 2	8

Size E16, 2 outputs: 5 & 12v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74010	12w	Pri	4 - 6	120	85 - 265Vrms	0.55 Apeak	1660µH
		Aux	2 - 1	14	7 - 14 Vdc	0.1 Adc
		S1	9 - 10	7	3.3 - 7 Vdc	2 Adc
		S2	7 - 8	17	8 - 17 Vdc	1 Adc

Size E16, 2 outputs: 2 x 24v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74014	12w	Pri	4 - 6	120	85 - 265Vrms	0.5 Apeak	1800µH
		Aux	2 - 1	17	9 - 18 Vdc	0.2 Adc
		S1	9 - 10	27	15 - 30 Vdc	0.4 Adc
		S2	7 - 8	27	15 - 30 Vdc	0.4 Adc

Typical outputs:
+24V 0.5A with S1-S2 in parallel
+48V 0.25A with S1-S2 in series (8-9 connected)
+15V / -15V 0.4A with pins 8-9 connected to 0V

Size E16, 3 outputs: 5 / 15 / 24v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74015	12w	Pri	4 - 6	120	85 - 265Vrms	0.5 Apeak	1800µH
		Aux	2 - 1	14	12 Vdc	0.2 Adc
		S1	9 - 10	6	5 Vdc	1.5 Adc
		S2	8 - 10	17	15 Vdc	0.6 Adc
		S3	7 - 10	27	24 Vdc	0.4 Adc

Size EL19, 2 outputs: 5 & 12v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74020	18w	Pri	4 - 6	108	85 - 265Vrms	0.8 Apeak	1250µH
		Aux	2 - 1	12	7 - 14 Vdc	0.1 Adc
		S1	9 - 10	6	3.3 - 7 Vdc	3 Adc
		S2	7 - 8	14	8 - 16.5 Vdc	1.4 Adc
74021	18w	Pri	4 - 6	108	85 - 265Vrms	1.1 Apeak	900µH
		Aux	2 - 1	12	7 - 14 Vdc	0.1 Adc
		S1	9 - 10	6	3.3 - 7 Vdc	3 Adc
		S2	7 - 8	14	8 - 16.5 Vdc	1.4 Adc

Size EL19, 5 outputs: 3.3 / 5 / 12 / 18 / 30v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 60°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74023	16w	Pri	9 - 10	120	85 - 265Vrms	0.85 Apeak	1250µH
		Aux	8 - 7	17	15 Vdc	0.2 Adc
		S1	5 - 6	4	3.3 Vdc	S1+S2: 7 Adc
		S2	4 - 6	6	5 Vdc	S1+S2: 7 Adc
		S3	3 - 6	14	12 Vdc	0.8 Adc
		S4	2 - 6	20	18 Vdc	0.8 Adc
		S5	1 - 6	33	30 Vdc	0.2 Adc

Size EF20, 2 or 3 outputs: 5/5v or 12/12v or 3.3+5/12v

Creepage distance Primary / Secondary ≥ 8mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74087	24w	Pri	4 - 5	86	85 - 265Vrms	1.0 Apeak	1000µH
		Aux	2 - 1	12	11 - 18 Vdc	0.3 Adc
		S1	6 - 7	10	9 - 15 Vdc	1.5 Adc
		S2	9 - 10	10	9 - 15 Vdc	1.5 Adc
74088	20w	Pri	4 - 5	80	85 - 265Vrms	0.9 Apeak	1100µH
		Aux	2 - 1	17	15 Vdc	0.3 Adc
		S1	7 - 8	4	3.3 Vdc	S1+S2: 7 Adc
		S2	6 - 8	6	5 Vdc	S1+S2: 7 Adc
		S3	9 - 10	14	12 Vdc	1.3 Adc
74089	20w	Pri	4 - 5	86	85 - 265Vrms	0.85 Apeak	1300µH
		Aux	2 - 1	12	7 - 18 Vdc	0.3 Adc
		S1	6 - 7	5	3 - 7.5 Vdc	2.0 Adc
		S2	9 - 10	5	3 - 7.5 Vdc	2.0 Adc

Size E25, 3 or 1 outputs: 5+12/12v or 24v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74030	30w	Pri	3 - 5	70	85 - 265Vrms	1.5 Apeak	750µH
		Aux	2 - 1	8	7 - 14.5 Vdc	1 Adc
		S1	7 - 8	4	3.3 - 7 Vdc	3 Adc
		S2	6 - 8	9	8 - 16 Vdc	1.5 Adc
		S3	9 - 10	9	8 - 16 Vdc	1.5 Adc
74032	35w	Pri	3 - 5	72	85 - 265Vrms	1.1 Apeak	1100µH
		Aux	2 - 1	10	8 - 16 Vdc	1 Adc
		S1	6 - 10	18	15 - 30 Vdc	1.4 Adc

Note for 74030: S2 and S3 can be connected in series or in parallel.

Size ETD29, 4 outputs: 5+12 / 5+12v

Creepage distance Primary / Secondary ≥ 8mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74040	60w	Pri	5 - 7	50	85 - 265Vrms	3.0 Apeak	500µH
		Aux	3 - 2	6	7 - 14.5 Vdc	0.5 Adc
		S1	12 - 13	3	3.3 - 7 Vdc	4 Adc
		S2	11 - 13	7	8 - 16.5 Vdc	2.5 Adc
		S3	9 - 10	3	3.3 - 7 Vdc	4 Adc
		S4	8 - 10	7	8 - 16.5 Vdc	2.5 Adc

Note: S1/S3 or S2/S4 can be connected in series or in parallel.

Size ERL28, 5 outputs: 3.3 / 5 / 12 / 18 / 30v

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74043	60w	Pri	5 - 1	45	85 - 265Vrms	3.0 Apeak	500µH
		Aux	8 - 9	7	15 Vdc	0.5 Adc
		S1	14+15 / 12+13	2	3.3 Vdc	S1+S2: 7 Adc
		S2	11 / 12+13	3	5 Vdc	S1+S2: 7 Adc
		S3	16 - 10	4	12 Vdc	2 Adc
		S4	17 - 10	7	18 Vdc	2 Adc
		S5	18 - 10	13	30 Vdc	0.5 Adc

Size ETD34, 4 outputs: 5+12 / 5+12V

Creepage distance Primary / Secondary ≥ 8mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74050	90w	Pri	5 - 7	36	85 - 265Vrms	2.8 Apeak	500µH
		Aux	3 - 2	4	7 - 14 Vdc	0.5 Adc
		S1	12 - 13	2	3.3 - 6.5 Vdc	3 Adc
		S2	11 - 13	5	8.5 - 17 Vdc	3 Adc
		S3	9 - 10	2	3.3 - 6.5 Vdc	5 Adc
		S4	8 - 10	5	8.5 - 17 Vdc	3 Adc

Note: S1/S3 or S2/S4 can be connected in series or in parallel.

Size ETD39, 4 outputs: 5+12 / 5+12V

Creepage distance Primary / Secondary ≥ 8mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74060	140w	Pri	5 - 7	36	85 - 265Vrms	4 Apeak	440µH
		Aux	3 - 2	4	7 - 14 Vdc	0.5 Adc
		S1	14 - 15	2	3.3 - 6.5 Vdc	5 Adc
		S2	13 - 15	5	8.5 - 17 Vdc	5 Adc
		S3	11 - 12	2	3.3 - 6.5 Vdc	5 Adc
		S4	10 - 12	5	8.5 - 17 Vdc	5 Adc

Note: S1/S3 or S2/S4 can be connected in series or in parallel.

Size ETD44, 4 outputs: 5+12 / 5+12V

Creepage distance Primary / Secondary ≥ 8mm
Ambient temperature < 50°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74070	180w	Pri	5 - 7	38	85 - 265Vrms	8 Apeak	300µH
		Aux	3 - 2	4	7 - 14 Vdc	0.5 Adc
		S1	16 - 17	2	3.3 - 6.5 Vdc	6 Adc
		S2	15 - 17	5	8.5 - 17 Vdc	5 Adc
		S3	13 - 14	2	3.3 - 6.5 Vdc	6 Adc
		S4	12 - 14	5	8.5 - 17 Vdc	5 Adc

Note: S1/S3 or S2/S4 can be connected in series or in parallel.

Size E16, Single output: 5 or 12V

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 85°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74090	1.5w	Pri	10 - 9	228	85 - 265Vrms	0.28 Apeak	6000µH
74090	1.5w	S1	5 - 2	16	3.3 - 6 Vdc	0.4 Adc	6000µH
74091	1.5w	Pri	10 - 9	228	85 - 265Vrms	0.28 Apeak	6000µH
74091	1.5w	S1	5 - 2	28	7.5 - 15 Vdc	0.2 Adc	6000µH

Size E16, Single output: 5 or 12V

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 70°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74092	3.1w	Pri	10 - 9	191	85 - 265Vrms	0.34 Apeak	4200µH
74092	3.1w	S1	5 - 2	13	3.3 - 6 Vdc	0.9 Adc	4200µH
74093	3.1w	Pri	10 - 9	191	85 - 265Vrms	0.34 Apeak	4200µH
74093	3.1w	S1	5 - 2	24	7.5 - 15 Vdc	0.4 Adc	4200µH

Size E16, Single output: 5 or 12V

Creepage distance Primary / Secondary ≥ 6mm
Ambient temperature < 60°C

Myrra P/N	Maximum Output Power	Windings
Myrra P/N	Maximum Output Power		Pins	Turns	Voltage	Maximum Current	Inductance (+/-10%)
74094	9w	Pri	10 - 9	135	85 - 265Vrms	0.48 Apeak	2100µH
74094	9w	S1	5 - 2	9	3.3 - 6 Vdc	1.5 Adc	2100µH
74095	9w	Pri	10 - 9	135	85 - 265Vrms	0.48 Apeak	2100µH
74095	9w	S1	5 - 2	17	7.5 - 15 Vdc	0.9 Adc	2100µH

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Myrra High Frequency Ferrite
Power Ferrite Transformers

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Magnetic Power Limited

Myrra High Frequency FerritePower Ferrite Transformers

Products Menu

Myrra High Frequency Ferrite
Power Ferrite Transformers