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Diodes Incorporated 1N4002-T
- Part No.:
- 1N4002-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4002-T.pdf
- Description:
- DIODE GEN PURP 100V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:6,664
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Product details
Overview
1N4002-T from Diodes Incorporated is a general-purpose silicon rectifier diode in DO-41 package, rated for 100 V peak repetitive reverse voltage, 1.0 A average forward current, and 30 A non-repetitive surge current. It features low forward voltage drop (1.0 V at 1.0 A), low reverse leakage (5.0 µA at 25°C), and is RoHS-compliant with bright tin-plated leads for reliable solderability - widely used in AC/DC power supplies and DC power input stages.
For engineers reviewing the 1N4002-T datasheet, 1N4002-T pinout, 1N4002-T application, or 1N4002-T equivalent, key selection criteria include its 100 V blocking rating, thermal resistance (100 °C/W), junction capacitance (15 pF), surge capability (30 A), and DO-41 mechanical compatibility in legacy and cost-sensitive power conversion designs.
Technical Context
This axial-leaded rectifier operates as a unidirectional current valve in single-phase half-wave configurations, optimized for 50/60 Hz line-frequency rectification. Its diffused PN junction ensures stable reverse breakdown behavior and low leakage across –65°C to +150°C operating range.
Designed for resistive or inductive loads, it requires 20% current derating under capacitive loading conditions. Junction-to-ambient thermal resistance of 100 °C/W mandates appropriate PCB copper area or ambient airflow for sustained 1.0 A operation at +75°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; defines safe AC input voltage ceiling (e.g., ≤70 V RMS). |
| IO | 1.0 A @ +75°C - Continuous DC output current capability with leads held at ambient; requires thermal management above this temperature. |
| VF | 1.0 V @ 1.0 A - Forward conduction loss; contributes ~1.0 W dissipation at full load, impacting efficiency and heatsinking needs. |
| IFSM | 30 A - Peak surge withstand for 8.3 ms half-sine; supports inrush current handling during power-up in transformer-fed supplies. |
| IR | 5.0 µA @ 25°C - Low reverse leakage ensures minimal standby power loss and stable DC bus hold-up in low-power systems. |
| Cj | 15 pF @ 4 V, 1 MHz - Junction capacitance affects high-frequency noise coupling and EMI filter design in switching-derived inputs. |
| RθJA | 100 °C/W - Thermal resistance determines junction temperature rise; e.g., +75°C ambient yields +175°C junction at 1.0 A without heatsinking. |
Pinout & Package
Package: DO-41 molded plastic case (UL 94V-0), axial leaded, cathode indicated by band. Dimensions: A = 25.4 mm (length), B = 4.06–5.21 mm (body diameter), C = 0.71–0.864 mm (lead diameter), D = 2.00–2.72 mm (lead spacing). Weight: ~0.30 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or transformer secondary; must tolerate full surge current and forward voltage drop. |
| Cathode (banded end) | Forward current exit point | Connects to DC output rail or filter capacitor; polarity marking prevents reverse-bias damage during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Diffused junction construction | Enables robust reverse voltage tolerance and stable long-term leakage performance over temperature and life. |
| 30 A surge rating (8.3 ms) | Supports repeated cold-start inrush into bulk capacitors without degradation, critical for offline AC adapters. |
| Bright tin-plated leads | Ensures MIL-STD-202 compliant solderability and intermetallic bond reliability on FR-4 and high-Tg PCBs. |
| RoHS-compliant, halogen-free | Meets EU Directive 2015/863/EU requirements; suitable for automotive and industrial products with strict material declarations. |
Applications
| AC/DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: Rectifying 120/230 VAC mains to low-voltage DC for consumer electronics. IC Role / Device Role / Timing Role: Primary-side rectifier in transformer-coupled linear power supply. Use Value: 100 V rating safely handles 120 VAC peaks (±10%), while 1.0 V VF limits conduction loss in low-cost, low-efficiency designs. | Use Scenario: Providing isolated +5 V or +12 V bias for PLC I/O modules and relay drivers. IC Role / Device Role / Timing Role: Input-stage rectifier feeding linear regulators or small switchers. Use Value: 30 A surge capacity absorbs transient energy from inductive load switching, preventing diode failure in noisy factory environments. |
| Automotive Accessory Circuits | Legacy Appliance Power Inputs |
Use Scenario: Reverse-polarity protection and battery charging path rectification in 12 V vehicle accessories. IC Role / Device Role / Timing Role: Polarity guard and charging diode in alternator-fed circuits. Use Value: Low 5.0 µA reverse leakage minimizes parasitic drain on vehicle batteries during extended parking periods. | Use Scenario: Mains rectification in older microwave ovens, washing machines, and HVAC control boards. IC Role / Device Role / Timing Role: Bulk rectifier feeding high-voltage capacitor banks and triac trigger circuits. Use Value: DO-41 axial form factor enables direct through-hole replacement in decades-old service parts, supporting repair continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4002G (ON Semiconductor) | Identical VRRM (100 V), IO (1.0 A), and DO-41 package; slightly higher VF (1.1 V) and IR (10 µA). | Same functional role but marginally higher conduction loss and leakage; acceptable where tighter leakage specs are not enforced. | Select when sourcing flexibility is prioritized and minor efficiency trade-off is acceptable. |
| RS1M (Fairchild/ON) | Higher VRRM (1000 V), same IO, faster recovery (~500 ns vs. >2 µs), smaller DO-204AL package. | Not drop-in: smaller footprint and faster switching enable SMPS use, but over-spec'd for 100 V line rectification. | Choose only if future-proofing for higher-voltage variants or space-constrained layouts is required. |
Compared with 1N4002-T, 1N4002G offers identical voltage/current ratings but looser leakage and forward voltage tolerances, while RS1M provides vastly higher voltage headroom and faster switching at the cost of unnecessary complexity and footprint reduction in standard 100 V applications.
Availability
1N4002-T is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial control units, and legacy appliance repairs requiring stable component supply and long-term obsolescence support.
Supply support for 1N4002-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The 1N400x series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, high-reliability line-frequency AC/DC conversion in consumer, industrial, and automotive auxiliary power applications.
FAQ
What is the maximum allowable ambient temperature for continuous 1.0 A operation?
The 1N4002-T sustains 1.0 A average forward current only up to +75°C ambient temperature, as specified in the datasheet. At higher ambient temperatures, current must be derated per Figure 1 - e.g., to ~0.7 A at +100°C - due to its 100 °C/W junction-to-ambient thermal resistance and +150°C maximum junction limit.
Can the 1N4002-T replace a 1N4001 in an existing design?
Yes, the 1N4002-T is a direct upgrade from the 1N4001, offering double the peak reverse voltage (100 V vs. 50 V) with identical forward characteristics, package, and surge rating. No layout or thermal changes are needed, and it improves margin against voltage transients in 120 VAC applications.
Is the 1N4002-T suitable for switching power supply front-ends?
No - the 1N4002-T has a slow reverse recovery time (>2 µs), making it unsuitable for high-frequency switching (e.g., >20 kHz). It is designed for 50/60 Hz line-frequency rectification. For SMPS input stages, fast-recovery or ultrafast diodes like UF4002 or MUR120 are required.
Does the 1N4002-T meet AEC-Q200 for automotive use?
No - the standard 1N4002-T is not AEC-Q200 qualified. Diodes Incorporated offers automotive-grade variants (e.g., 1N4002Q) with PPAP documentation, IATF 16949 manufacturing, and AEC-Q200 stress testing; these require explicit ordering and are not interchangeable with the commercial 1N4002-T without qualification.
1N4002-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4002-T FAQ
1.How can I place an order for 1N4002-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4002-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N4002-T reliable?
The price and inventory of 1N4002-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4002-T is usually 5 days.
3.What payment methods are accepted for 1N4002-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4002-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4002-T?
1N4002-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4002-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N4002-T?
For technical support, including 1N4002-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4002-T requirements.
6.How does Aetrix verify that 1N4002-T is sourced from the original manufacturer or authorized distributors?
All 1N4002-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N4002-T meets industry standards.
7.What is the process for return or replacement of 1N4002-T?
All 1N4002-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N4002-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N4002-T part is unused and in its original packaging.
Return procedure for 1N4002-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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