My Inquiry
My Account
Diodes Incorporated HER102-T
- Part No.:
- HER102-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER102-T.pdf
- Description:
- DIODE GEN PURP 100V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HER102-T from Diodes Incorporated is a 1.0A high-efficiency axial-lead rectifier diode in DO-41 package, rated for 100V maximum recurrent peak reverse voltage (VRRM), 1.1V max forward voltage at 1.0A DC, and 50ns reverse recovery time - optimized for high-speed switching in offline AC/DC power supplies and auxiliary rail rectification.
For engineers reviewing the HER102-T datasheet, HER102-T pinout, HER102-T application, or HER102-T equivalent, key selection criteria include its low leakage (5.0µA @ 100V), thermal stability up to +150°C junction temperature, DO-41 mechanical compatibility with through-hole PCB layouts, and compliance with UL 94V-0 flammability rating.
Technical Context
This device operates as a single-phase, half-wave silicon rectifier with fast recovery characteristics enabled by optimized doping and junction design. Its 50ns trr and 20pF typical junction capacitance support operation in 20–100kHz SMPS front-end stages without excessive switching loss or EMI generation.
The HER102-T sustains 30A non-repetitive surge current (8.3ms half-sine) and derates linearly from 1.0A at 50°C ambient to zero at ~175°C, enabling robust performance under transient overloads in industrial power adapters and motor control auxiliary supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking capability; defines safe operating ceiling in 115VAC input rectification. |
| IF(AV) | 1.0 A @ 50°C ambient, 9.5mm lead length - Continuous DC output current rating under standard heatsinking conditions. |
| VF | 1.1 V @ 1.0A DC - Low conduction loss improves efficiency in low-voltage secondary-side rectifiers. |
| trr | 50 ns - Fast recovery minimizes reverse recovery charge (Qrr), reducing switching losses in high-frequency converters. |
| IR | 5.0 µA @ 100V, 25°C - Low leakage preserves hold-up time and reduces standby power in energy-sensitive designs. |
| Tj Range | –65°C to +150°C - Wide junction temperature range supports operation in sealed enclosures or high-ambient environments. |
Pinout & Package
DO-41 molded plastic package with axial plated leads; cathode indicated by color band; compliant with MIL-STD-202 Method 208 solderability; UL 94V-0 rated housing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | AC input / transformer secondary connection point | Accepts alternating input; polarity must align with transformer center-tap or bridge configuration. |
| Cathode (Lead 2, banded end) | DC output / filter capacitor positive node | Delivers unidirectional current to bulk capacitor; marking ensures correct orientation during manual or automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| High-efficiency rectification | 1.1V VF at 1.0A enables >85% conduction efficiency in 5–12V output rails. |
| Fast recovery performance | 50ns trr limits reverse recovery energy dissipation in 50–100kHz flyback and forward converters. |
| Thermal ruggedness | Rated for 150°C junction operation and 30A surge current supports reliability in thermally constrained enclosures. |
| UL 94V-0 flammability rating | Self-extinguishing plastic housing meets safety requirements for Class II power supplies and industrial equipment. |
Applications
| AC/DC Adapter Rectification | Industrial Control Auxiliary Supply |
|---|---|
Use Scenario: 115VAC-to-12VDC offline adapter powering PLC I/O modules. IC Role / Device Role / Timing Role: Primary-side rectifier converting transformer secondary AC to pulsating DC before bulk filtering. Use Value: 100V VRRM safely handles 1.414 × 115VAC peak plus line surges; 50ns trr prevents cross-conduction loss in compact 65kHz designs. | Use Scenario: Isolated 24V auxiliary supply for servo drive gate drivers and logic. IC Role / Device Role / Timing Role: Half-wave rectifier feeding linear regulator or buck converter input. Use Value: 1.0A IF(AV) and –65°C to +150°C Tj range ensure stable operation across factory floor ambient swings and short-circuit transients. |
| LED Driver Input Stage | UPS Battery Charger Front-End |
Use Scenario: Constant-current LED driver with passive PFC and bridge rectifier replacement. IC Role / Device Role / Timing Role: High-speed replacement for slower 1N400x series in valley-fill PFC circuits. Use Value: 5.0µA IR at 100V reduces no-load power draw; 20pF Cj minimizes capacitive coupling noise into current-sense paths. | Use Scenario: Dual-output UPS charging circuit with separate 12V/24V battery inputs. IC Role / Device Role / Timing Role: Isolation rectifier in transformer-coupled charger stage. Use Value: DO-41 axial form factor allows vertical mounting on high-density PCBs; UL 94V-0 housing satisfies UL 1778 safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UF1002-T | Same DO-41 package; 100V VRRM; 50ns trr; but lower VF (1.0V @ 1.0A) and higher IR (10µA @ 100V). | Better efficiency at light load; slightly higher leakage may affect ultra-low-power standby. | Select UF1002-T when minimizing conduction loss dominates over leakage-critical hold-up time. |
| ES1B | SMA surface-mount package; 100V VRRM; 35ns trr; VF = 1.7V @ 1.0A; IR = 5µA @ 100V. | Enables automated SMT assembly but requires layout redesign; faster trr suits >200kHz topologies. | Choose ES1B only if board space constraints justify requalification for SMT and higher VF penalty. |
Compared with UF1002-T and ES1B, the HER102-T offers optimal balance of axial-lead manufacturability, 1.1V VF, and 5µA IR - making it preferred for cost-sensitive, through-hole AC/DC designs where thermal margin and legacy footprint compatibility are critical.
Availability
HER102-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial control auxiliary supplies, LED driver input stages, and UPS battery charger front-ends requiring stable component supply and long-term obsolescence management.
Supply support for HER102-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, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The HER101–HER106 series targets cost-effective, high-reliability rectification in legacy and new-design AC/DC power supplies - emphasizing thermal robustness, fast recovery, and regulatory compliance over ultra-high frequency optimization.
FAQ
Is HER102-T RoHS compliant and halogen-free?
Yes. HER102-T meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Diodes Incorporated confirms compliance in DS25001 Rev. 6 and provides material declarations upon request for full supply chain traceability.
Can HER102-T replace HER101 or HER103 in existing designs?
HER102-T is mechanically and electrically compatible with other HER10x devices in DO-41 package. Substitution is permissible if the 100V VRRM meets system peak voltage requirements - but verify trr and VF impact on thermal and efficiency margins in the specific operating point.
What is the maximum allowable soldering temperature for HER102-T leads?
Per MIL-STD-202 Method 208, HER102-T leads are rated for 260°C for 10 seconds maximum during wave or hand soldering. Preheating above 150°C is not recommended; thermal shock must be avoided to prevent internal bond wire damage.
Does HER102-T require heatsinking in 1.0A continuous operation?
No external heatsink is required at 1.0A IF(AV) when mounted with 9.5mm lead length at TA = 50°C, per Fig. 1 derating curve. At higher ambient temperatures or enclosed environments, airflow or copper pour area should be verified using the published thermal resistance (RθJA ≈ 100°C/W).
HER102-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:
- 1.1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
HER102-T FAQ
1.How can I place an order for HER102-T through Aetrix?
Please submit a Request for Quotation (RFQ) for HER102-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 HER102-T reliable?
The price and inventory of HER102-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER102-T is usually 5 days.
3.What payment methods are accepted for HER102-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER102-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER102-T?
HER102-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER102-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 HER102-T?
For technical support, including HER102-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER102-T requirements.
6.How does Aetrix verify that HER102-T is sourced from the original manufacturer or authorized distributors?
All HER102-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 HER102-T meets industry standards.
7.What is the process for return or replacement of HER102-T?
All HER102-T units undergo pre-shipment inspection (PSI). If there is an issue with HER102-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 HER102-T part is unused and in its original packaging.
Return procedure for HER102-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HER102-T Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
