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Taiwan Semiconductor Corporation HER151G-T
- Part No.:
- HER151G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER151G-T.pdf
- Description:
- 50NS, 1.5A, 50V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:6,581
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Product details
Overview
HER151G-T from Taiwan Semiconductor is a 1.5A, 50V high-efficiency glass-passivated silicon rectifier diode in DO-204AC (DO-15) package, featuring low forward voltage (1.0 V at 1.5 A, 25°C), 50 A surge capability, and 50 ns reverse recovery time - used in DC-DC converters and freewheeling paths where fast switching and thermal robustness are required.
For engineers reviewing the HER151G-T datasheet, HER151G-T pinout, HER151G-T application, or HER151G-T equivalent, key selection criteria include repetitive peak reverse voltage (50 V), junction-to-ambient thermal resistance (60 °C/W), RoHS/halogen-free compliance, and DO-15 mechanical compatibility with standard through-hole PCB layouts.
Technical Context
This device is a single-die, unidirectional, high-efficiency rectifier optimized for switching-mode power supplies. Its glass-passivated junction ensures stable leakage performance up to 125°C (IR = 150 µA), while the 50 ns trr supports operation in high-frequency converters above 100 kHz.
The DO-204AC (DO-15) package delivers 60 °C/W junction-to-ambient thermal resistance and supports 1.5 A average forward current with derating above 75°C ambient. Cathode polarity is marked by a visible band, and leads meet J-STD-002 solderability and JESD 201 Class 1A whisker requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse voltage before breakdown; sets safe operating limit in clamp/freewheeling circuits |
| IF(AV) | 1.5 A - continuous average forward current at TA = 75°C; defines steady-state power handling in DC-DC output stages |
| VF @ 1.5A | 1.0 V - forward voltage drop at rated current and 25°C; directly determines conduction loss (1.5 W max at full load) |
| IFSM | 50 A - non-repetitive surge current (8.3 ms half-sine); enables robust startup and fault tolerance in SMPS |
| trr | 50 ns - reverse recovery time under IF = 0.5 A, IR = 1.0 A; critical for minimizing switching losses in >100 kHz topologies |
| RθJA | 60 °C/W - thermal resistance from junction to ambient; informs heatsinking needs for sustained 1.5 A operation |
| IR @ 25°C | 5 µA - reverse leakage at rated VR; ensures minimal standby power loss in high-impedance bias networks |
Pinout & Package
HER151G-T is housed in a DO-204AC (DO-15) axial-lead package with cathode indicated by a painted band. Leads are pure tin-plated and compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or inductor return; blocks 50 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable IR ≤ 5 µA at 25°C and ≤ 150 µA at 125°C - critical for high-temp reliability in enclosed power modules |
| Low VF (1.0 V @ 1.5 A) | Reduces conduction loss to ≤1.5 W at full rated current - improves efficiency in space-constrained 12 V/24 V DC-DC designs |
| 50 ns reverse recovery | Minimizes turn-off switching loss and EMI generation in 100–500 kHz SMPS applications |
| DO-204AC (DO-15) package | Standard axial footprint compatible with legacy through-hole assembly and automated taping (3,500/reel) |
| RoHS + halogen-free | Meets IEC 61249-2-21; supports compliance in industrial and consumer end-equipment without material waivers |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 5–24 V at ≤1.5 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary to regulated DC output. Use Value: 1.0 V VF minimizes conduction loss; 50 ns trr reduces switching loss and output ripple in 200–300 kHz designs. | Use Scenario: Placed across inductive loads (e.g., relay coils, motor windings) in PWM-driven inverters. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET/FET off-time to suppress voltage spikes. Use Value: 50 A IFSM withstands transient energy; 50 V VRRM matches typical 24–48 V bus systems. |
| AC-DC Adapter Secondary Rectification | Industrial Power Supply Hold-Up Diode |
Use Scenario: Rectifies transformer secondary in compact wall adapters (e.g., 12 V/1 A output). IC Role / Device Role / Timing Role: Converts low-voltage AC to DC prior to bulk capacitance and linear regulation. Use Value: DO-15 package fits tight board spacing; 1.5 A IF rating supports peak load surges without thermal runaway. | Use Scenario: Isolates backup capacitor bank from main supply during brownout or shutdown in PLC power modules. IC Role / Device Role / Timing Role: Blocks reverse current flow from hold-up cap back into failing supply rail. Use Value: 5 µA IR at 25°C preserves stored charge; 150°C TJ max allows operation near hot power components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U | 1 A IF, 600 V VRRM, 65 ns trr, TO-220AC package | Higher voltage rating but lower current; requires heatsink for >0.5 A | Choose when system requires ≥400 V reverse blocking and higher surge margin, not for 50 V/1.5 A optimization |
| MBR1550CT | 15 A dual common-cathode Schottky, 50 V VRRM, VF ≈ 0.75 V, TO-220AB | Lower VF but higher leakage (>100 µA at 125°C); no reverse recovery | Prefer where ultra-low conduction loss dominates over thermal budget and leakage sensitivity |
Compared with STTH1L06U and MBR1550CT, HER151G-T offers optimal balance of 1.5 A current, 50 V rating, 1.0 V VF, and DO-15 footprint - making it ideal for cost-sensitive, space-constrained 24–48 V DC-DC outputs where fast recovery and thermal efficiency are jointly critical.
Availability
HER151G-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent DO-15 mechanical fit, and verified 50 ns recovery performance.
Supply support for HER151G-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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, automotive, and industrial markets since 1979.
The HER15xG-T series was developed specifically for high-frequency, high-reliability rectification in compact switching power supplies - emphasizing low VF, fast trr, and robust thermal performance in standard axial packages.
FAQ
What is the maximum junction temperature rating for HER151G-T?
The HER151G-T has a maximum junction temperature (TJ) rating of +150°C, validated per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version B2105). This allows reliable operation in enclosed power supplies where ambient temperatures reach 75–100°C, provided thermal design respects the 60 °C/W RθJA limit and derates average current accordingly.
Does HER151G-T have a specified reverse recovery time, and how is it measured?
Yes, HER151G-T specifies a typical reverse recovery time (trr) of 50 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the manufacturer's test conditions. This value is confirmed in the Electrical Specifications table of the Taiwan Semiconductor HER151G-T–HER156G-T datasheet (Version B2105) and reflects performance in high-frequency switching environments.
Is HER151G-T RoHS and halogen-free compliant?
Yes, HER151G-T is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet (Version B2105). The molding compound meets UL 94V-0 flammability rating, and terminals are pure tin-plated to satisfy environmental and solderability requirements.
What does the "G" suffix in HER151G-T indicate?
The "G" in HER151G-T denotes green (halogen-free) compound per Taiwan Semiconductor's internal marking convention, confirmed in the PACKAGE OUTLINE DIMENSIONS and MARKING DIAGRAM sections of the datasheet (Version B2105). It is not a grade or temperature variant - all HER15xG-T parts share identical electrical specs and DO-204AC packaging.
Can HER151G-T replace a 1N4001 in a 50 V, 1 A application?
HER151G-T can functionally replace 1N4001 in 50 V/1 A applications but offers superior performance: 50 ns trr vs. ~30 µs, 1.0 V VF vs. ~1.1 V, and 50 A IFSM vs. 30 A. However, its faster recovery may increase EMI in non-filtered circuits; layout and snubbing should be reviewed. HER151G-T remains pin-compatible in DO-15 sockets.
HER151G-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER151G-T FAQ
1.How can I place an order for HER151G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for HER151G-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 HER151G-T reliable?
The price and inventory of HER151G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER151G-T is usually 5 days.
3.What payment methods are accepted for HER151G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER151G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER151G-T?
HER151G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER151G-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 HER151G-T?
For technical support, including HER151G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER151G-T requirements.
6.How does Aetrix verify that HER151G-T is sourced from the original manufacturer or authorized distributors?
All HER151G-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 HER151G-T meets industry standards.
7.What is the process for return or replacement of HER151G-T?
All HER151G-T units undergo pre-shipment inspection (PSI). If there is an issue with HER151G-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 HER151G-T part is unused and in its original packaging.
Return procedure for HER151G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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