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Taiwan Semiconductor Corporation HER154GH
- Part No.:
- HER154GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER154GH.pdf
- Description:
- 50NS, 1.5A, 300V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
HER154GH from Taiwan Semiconductor is a high-efficiency, AEC-Q101 qualified single-die silicon rectifier diode in DO-204AC (DO-15) package, rated for 1.5A average forward current, 400V repetitive peak reverse voltage (VRRM), and 50A surge current (IFSM). It delivers low forward voltage drop (1.0 V at 1.5 A, 25°C) and fast reverse recovery time (50 ns), making it suitable for switching-mode power supplies in automotive and industrial DC-DC converters.
For engineers reviewing the HER154GH datasheet, HER154GH pinout, HER154GH application, or HER154GH equivalent, key selection criteria include its AEC-Q101 qualification, 400V VRRM, 1.0 V VF at rated current, 50 ns trr, and DO-15 mechanical compatibility with standard through-hole PCB layouts.
Technical Context
This device operates as a unidirectional, single-junction, glass-passivated silicon rectifier optimized for high-frequency switching applications. Its 50 ns reverse recovery time and 35 pF junction capacitance support efficient operation in converters operating up to several hundred kHz.
The HER154GH features pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and a cathode band polarity indicator. Junction temperature range is −55°C to +150°C, with thermal resistance RθJA of 60°C/W in free-air conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 1.5 A - Continuous average forward current under specified thermal conditions |
| IFSM | 50 A - Peak non-repetitive surge current capability (8.3 ms half-sine) |
| VF | 1.0 V @ 1.5 A, 25°C - Forward conduction loss directly impacts system efficiency and thermal design |
| trr | 50 ns - Fast recovery minimizes switching losses and EMI in high-frequency SMPS |
| CJ | 35 pF @ 1 MHz, 4 V - Junction capacitance affects high-frequency noise coupling and snubber design |
| TJ max | +150°C - Maximum allowable junction temperature defines thermal derating envelope |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, glass-passivated, RoHS- and halogen-free compliant. Cathode identified by a single band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor; polarity must be observed to prevent failure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Glass-passivated junction | Enhances moisture resistance and long-term stability under humid or harsh environmental conditions |
| Low VF (1.0 V) | Reduces conduction losses by ~15–20% vs. standard FR-type rectifiers at 1.5 A, lowering heatsink requirements |
| Fast trr (50 ns) | Enables higher switching frequencies without excessive switching loss or voltage overshoot in flyback/forward topologies |
| DO-15 mechanical standardization | Ensures drop-in compatibility with legacy board footprints and automated insertion equipment |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: High-reliability 12 V to 5 V/3.3 V buck-derived converter in engine control units (ECUs) and ADAS modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure operational integrity across under-hood temperature extremes. | Use Scenario: Secondary-side rectification in 24 V input industrial AC-DC front-end supplies powering PLCs and motor drives. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward converters. Use Value: 50 ns trr and 1.0 V VF reduce switching loss and improve full-load efficiency beyond 89%. |
| Telecom Power Rectification | Renewable Energy Inverters |
Use Scenario: Output stage rectification in 48 V telecom brick converters delivering isolated 12 V bias rails. IC Role / Device Role / Timing Role: Primary rectifier in dual-output forward converter with cross-regulation. Use Value: 35 pF CJ and low leakage (<5 µA @ 25°C) minimize standby power loss and improve no-load regulation. | Use Scenario: Auxiliary power supply rectification in solar microinverters requiring compact, high-temp stable components. IC Role / Device Role / Timing Role: Input bridge leg in isolated auxiliary DC-DC for gate driver bias. Use Value: UL 94V-0 molding and halogen-free construction meet IEC 61249-2-21 compliance for green energy systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-HER154G | Same VRRM (400 V), IF (1.5 A), and DO-15 package; trr = 50 ns, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| ON Semiconductor MUR1540G | Higher VRRM (400 V same), identical IF/trr, but uses epoxy passivation instead of glass; slightly higher VF (1.15 V typ.) | Lower moisture resistance; less suited for high-humidity automotive environments | Prefer where JEDEC moisture sensitivity level (MSL) tolerance is less critical than price |
Compared with VS-HER154G and MUR1540G, the HER154GH uniquely combines AEC-Q101 qualification, glass passivation, and 1.0 V VF-making it the only option among the three validated for under-hood automotive use with minimal conduction loss.
Availability
HER154GH is available at Aetrix Electronics and suitable for automotive ECUs, industrial power supplies, telecom brick converters, and renewable energy auxiliary power designs requiring stable component supply, long lifecycle assurance, and AEC-Q101 compliance.
Supply support for HER154GH 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, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.
The HER15xG series was designed specifically to deliver high-efficiency, high-reliability rectification in space-constrained, thermally demanding switching power supplies-especially where AEC-Q101 validation and low VF are mandatory.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER154GH?
The HER154GH has a VRRM of 400 V, as confirmed in the absolute maximum ratings table of the official Taiwan Semiconductor datasheet (Version I2105). This rating applies across the full operating temperature range and defines the highest reverse voltage the device can block repeatedly without avalanche breakdown. Exceeding this value risks irreversible junction damage.
Is HER154GH AEC-Q101 qualified, and what does that cover?
Yes, HER154GH is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code and confirmed in the FEATURES section. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST), ensuring reliability for automotive under-hood applications per the AEC-Q101 standard.
What is the forward voltage (VF) of HER154GH at rated current?
The HER154GH exhibits a typical forward voltage of 1.0 V at 1.5 A and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents a key efficiency parameter-lower VF reduces conduction loss and thermal load compared to standard FR diodes.
Does HER154GH have a defined reverse recovery time (trr)?
Yes, HER154GH has a maximum reverse recovery time of 50 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This fast recovery characteristic is critical for minimizing switching losses and voltage spikes in high-frequency DC-DC converters and is consistent across the HER151G–HER155G subgroup.
What package type and lead finish does HER154GH use?
HER154GH uses the DO-204AC (DO-15) axial package with pure tin-plated leads, fully compliant with J-STD-002 solderability requirements. The device features a cathode band for polarity identification and weighs approximately 0.400 g. Its molding compound meets UL 94V-0 flammability and IEC 61249-2-21 halogen-free standards.
HER154GH 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):
- 300 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 @ 300 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER154GH FAQ
1.How can I place an order for HER154GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER154GH 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 HER154GH reliable?
The price and inventory of HER154GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER154GH is usually 5 days.
3.What payment methods are accepted for HER154GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER154GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER154GH?
HER154GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER154GH 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 HER154GH?
For technical support, including HER154GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER154GH requirements.
6.How does Aetrix verify that HER154GH is sourced from the original manufacturer or authorized distributors?
All HER154GH 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 HER154GH meets industry standards.
7.What is the process for return or replacement of HER154GH?
All HER154GH units undergo pre-shipment inspection (PSI). If there is an issue with HER154GH, 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 HER154GH part is unused and in its original packaging.
Return procedure for HER154GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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