NEC Corporation RD7.5E-T1-AZ

View All Single, Pre-Biased Bipolar Transistors by NEC Corporation

Part Number:
RD7.5E-T1-AZ
Manufacturer:
NEC Corporation
Category:
Single, Pre-Biased Bipolar Transistors
RoHs:
Non-RoHS Compliant
Datasheet:
Description:
DIODE ZENER
In stock 2,722,000

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Specifications

Type

Paramete

Type

Paramete

Power - Max

500 mW

Qualification

Supplier Device Package

DO-35

Current - Reverse Leakage @ Vr

500 nA @ 4 V

Grade

Voltage - Zener (Nom) (Vz)

7.04 V

Mounting Type

Through Hole

Operating Temperature

175°C (TJ)

Tolerance

±2.2%

Impedance (Max) (Zzt)

8 Ohms

Voltage - Forward (Vf) (Max) @ If

Package / Case

DO-204AH, DO-35, Axial

Overview

RD7.5E-T1-AZ – Comprehensive Datasheet Summary

7.5 V Surface-Mount Zener Diode, Planar Type, 500 mW

1. Device Overview

Type: Low-profile planar Zener diode for voltage regulation, clamping and ESD protection
Part number suffix key:“E” = 500 mW rated dissipation (E-line DO-35 equivalent)“T1” = tape-and-reel packing (7-in/330 mm Ø, 8 mm embossed)“AZ” = factory lot / RoHS-green compound identifier (lead-free, halogen-free)
Polarity: cathode band nearest the device marking stripe

2. Absolute Maximum Ratings (Ta = 25 °C unless noted)

TableCopy

Parameter	Symbol	Value	Unit
Power Dissipation (on FR-4, 25 mm × 25 mm 1 oz Cu)	PD	500	mW
Derating above 25 °C	–	4.0	mW/°C
Junction Temperature	Tj	175	°C
Storage Temperature	Tstg	–55 … +175	°C
Thermal Resistance Junction-to-Ambient (Note 1)	RθJA	≈250	°C/W

3. Electrical Characteristics (25 °C, DC test unless stated)

Parameter	Symbol	Min	Typ	Max	Unit	Condition
Nominal Zener Voltage	VZ	7.0	7.5	7.9	V	IZT = 20 mA
Zener Impedance	ZZ	–	6	15	Ω	IZT = 20 mA, f = 1 kHz
Leakage Current	IR	–	–	0.1	µA	VR = 5 V (70 % VZ)
Temperature Coefficient	TC	–	+4.8	–	mV/°C	20 mA, 25 … 100 °C
Forward Voltage	VF	–	0.9	1.2	V	IF = 200 mA
Diode Capacitance	CD	–	70	–	pF	VR = 0 V, f = 1 MHz

4. Ordering & Packaging Information

RD7.5E-T1-AZ

Package: molded epoxy, JEDEC DO-35 outline (Ø 1.8 mm × 4.0 mm L)
Lead finish: matte Sn (100 %), RoHS & REACH compliant, <100 ppm halogen
Tape-and-reel: 5 k pcs/reel, 52 mm spacing, Ammo pack option available
Label barcode: contains factory date-code, anode/cathode orientation icon

5. Typical Applications

Local 7.5 V reference for ADCs / DACs
Over-voltage clamp in SMPS secondary side
Gate-drive protection for MOSFETs/IGBTs
ESD / surge crowbar in industrial sensors
Waveform clipping & level shifting

6. Design Recommendations

Keep copper area ≥ 25 mm × 25 mm on cathode pad to stay within 500 mW rating at 60 °C ambient
Add 10 Ω … 22 Ω series resistor when driven from low-impedance source to limit junction heating during surge
For reverse-polarity immunity, pair with fast rectifier in series or use bridge configuration
Maintain ≤ 0.4 mm lead length inside solder fillet to reduce thermal shock during reflow

7. Reliability & Qualification

Moisture Sensitivity: MSL 1, unlimited floor life at ≤ 30 °C / 85 % RH
Reflow profile: 260 °C peak, J-STD-020 compatible
Automotive capable: AEC-Q101 test plan available on request
ESD rating: HBM 8 kV, CDM 2 kV

8. Related Part Numbers (Same Family)

RD7.5F (1 W DO-41), RD7.5J (400 W SMC), RD7.5M (200 mW Mini-Mold)
Close neighbours: RD6.8E, RD8.2E for 6.8 V / 8.2 V regulation nodes

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