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Diodes Incorporated HER101-T
- Part No.:
- HER101-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
HER101-T.pdf
- Description:
- DIODE GEN PURP 50V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:1,489
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Product details
Overview
HER101-T from Diodes Incorporated is a 1.0A high-efficiency axial-lead rectifier diode in DO-41 package, rated for 50V maximum recurrent peak reverse voltage (VRRM), 1.1V forward voltage at 1.0A, and 50ns reverse recovery time (trr). It delivers low leakage (5.0µA @ 50V), high-speed switching, and operates from –65°C to +150°C - used in offline AC/DC input stages of compact power adapters and auxiliary supplies.
For engineers reviewing the HER101-T datasheet, HER101-T pinout, HER101-T application, or HER101-T equivalent, key selection criteria include its 50V VRRM rating, 1.1V VF at 1A, 50ns trr, DO-41 mechanical compatibility, and thermal derating behavior above 50°C ambient.
Technical Context
The HER101-T is a silicon planar epitaxial high-efficiency rectifier optimized for fast recovery in low-voltage, high-current AC/DC front-end applications. Its 50ns trr and 1.1V VF at 1A reflect a design trade-off favoring reduced switching loss over ultra-low conduction loss - distinct from standard recovery (e.g., 1N4001) and ultrafast (e.g., UF1001) families.
It uses a color-banded cathode marking on axial leads, conforms to UL 94V-0 flammability, and is rated for 30A non-repetitive surge (8.3ms half-sine). Junction capacitance is 20pF at 4V reverse bias, supporting stable performance in 50/60Hz and low-frequency SMPS input rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 36–48VAC input circuits. |
| IF(AV) | 1.0 A @ 50°C ambient with 9.5mm lead length - defines continuous DC output capability in linear or flyback auxiliary windings. |
| VF @ 1.0A | 1.1 V - Forward drop directly impacts conduction loss and thermal rise in compact, unheatsinked designs. |
| trr | 50 ns - Enables efficient operation up to ~100kHz switching frequencies without excessive reverse recovery loss. |
| IR @ 50V | 5.0 µA - Low leakage supports stable hold-up and low standby power in energy-sensitive adapters. |
| Tj Range | –65°C to +150°C - Allows deployment in automotive under-hood auxiliary supplies and industrial control power modules. |
Pinout & Package
Package: DO-41 molded plastic case with plated axial leads; polarity indicated by cathode band; weight ≈ 0.35 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Input for positive half-cycle conduction | Connected to AC source or transformer secondary; must withstand 30A surge during cold-start. |
| Cathode (banded end) | Output for rectified DC current | Feeds bulk capacitor or downstream regulator; reverse voltage rating applies across this terminal pair. |
Key Features
| Feature | Design Value |
|---|---|
| High-efficiency rectification | Combines 1.1V VF and 50ns trr to reduce total power loss vs. general-purpose rectifiers in 50–100kHz inputs. |
| Low leakage current | 5.0 µA max @ 50V enables reliable hold-up in low-power standby modes without capacitor discharge issues. |
| DO-41 mechanical standardization | Enables direct replacement in legacy PCB footprints designed for 1N400x/1N540x series, with identical lead spacing and bend radius. |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed power supplies without additional potting or flame barriers. |
Applications
| AC/DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: 24VAC-to-DC auxiliary supply feeding microcontroller and I/O logic in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Primary rectifier converting transformer secondary output to unregulated DC bus prior to linear regulator. Use Value: 50ns trr minimizes switching noise coupling into sensitive analog sensor circuits sharing the same board. | Use Scenario: Input rectification stage in 12V/1A isolated flyback converter powering HMI display backlight drivers. IC Role / Device Role / Timing Role: High-current, low-VF rectifier handling peak line surges while maintaining thermal stability at 70°C ambient. Use Value: 1.0A average current rating and 30A surge capability ensure reliability during repeated motor startup transients. |
| Consumer Audio Power Stages | Automotive Body Control Modules |
Use Scenario: Dual-supply generation (±15V) from center-tapped transformer in Class AB amplifier power section. IC Role / Device Role / Timing Role: Half-wave rectifier per rail, operating at 50/60Hz with minimal forward drop-induced voltage sag. Use Value: 1.1V VF ensures consistent rail voltage across volume changes, preserving dynamic headroom. | Use Scenario: 12V battery-fed auxiliary DC/DC converter supplying 5V to CAN transceivers and door lock actuators. IC Role / Device Role / Timing Role: Input rectifier tolerant of load-dump spikes and cold-crank undervoltage conditions. Use Value: –65°C to +150°C operating range supports under-hood placement without derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UF1001-T | 25ns trr, 1.3V VF @ 1A, same DO-41 package | Better suited for >200kHz SMPS where reverse recovery loss dominates | Select UF1001-T when reducing EMI or improving efficiency above 100kHz; accept higher VF penalty. |
| 1N4001-T | 30µs trr, 1.1V VF @ 1A, same DO-41 package | Lower cost but unsuitable for switching frequencies >1kHz due to high recovery loss | Choose 1N4001-T only for pure 50/60Hz linear supplies with no switching content. |
Compared with UF1001-T, HER101-T trades faster recovery for lower forward voltage; compared with 1N4001-T, it delivers 600× faster recovery at identical VF - making it optimal for quasi-resonant and low-frequency SMPS where both conduction and switching losses matter.
Availability
HER101-T is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial control power supplies, consumer audio power stages, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for HER101-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 and manufacturing operations across Asia and the Americas.
The HERxx rectifier series targets cost-sensitive, high-volume power conversion applications demanding improved efficiency over legacy 1N400x devices without migrating to premium ultrafast families.
FAQ
Is HER101-T RoHS compliant and halogen-free?
Yes. HER101-T meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The DO-41 package uses lead-free matte tin-plated axial leads and UL 94V-0 compliant molding compound - verified in Diodes Incorporated's official compliance documentation DS25001 Rev. 6.
Can HER101-T replace 1N4001 in existing designs?
Yes, HER101-T is a direct DO-41 footprint replacement for 1N4001 with identical pinout and mechanical dimensions. Its 50ns trr improves efficiency in any design with switching content, though thermal design should verify junction temperature remains below 150°C under worst-case load.
What is the maximum allowable lead temperature during soldering?
The maximum lead temperature is 260°C for 10 seconds, per MIL-STD-202, Method 208. Diodes Incorporated specifies that soldering must use controlled thermal profiles to avoid internal die stress; wave or hand-soldering is permitted provided dwell time and peak temperature limits are strictly observed.
Does HER101-T support reverse voltage beyond 50V in short-duration pulses?
No. VRRM = 50V is the absolute maximum repetitive reverse voltage. Transient spikes exceeding 50V - even briefly - risk avalanche breakdown and permanent degradation. For 120VAC applications, HER102-T (100V VRRM) or higher-rated variants must be used.
HER101-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
HER101-T FAQ
1.How can I place an order for HER101-T through Aetrix?
Please submit a Request for Quotation (RFQ) for HER101-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 HER101-T reliable?
The price and inventory of HER101-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER101-T is usually 5 days.
3.What payment methods are accepted for HER101-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER101-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER101-T?
HER101-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER101-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 HER101-T?
For technical support, including HER101-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER101-T requirements.
6.How does Aetrix verify that HER101-T is sourced from the original manufacturer or authorized distributors?
All HER101-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 HER101-T meets industry standards.
7.What is the process for return or replacement of HER101-T?
All HER101-T units undergo pre-shipment inspection (PSI). If there is an issue with HER101-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 HER101-T part is unused and in its original packaging.
Return procedure for HER101-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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