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Taiwan Semiconductor Corporation HER157GH
- Part No.:
- HER157GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER157GH.pdf
- Description:
- 75NS, 1.5A, 800V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
HER157GH from Taiwan Semiconductor is an AEC-Q101-qualified high-efficiency ultrafast rectifier diode in DO-204AC (DO-15) package, rated for 800 V repetitive peak reverse voltage (VRRM), 1.5 A average forward current (IF), and 50 A surge current (IFSM). It delivers low forward voltage (1.7 V at 1.5 A, 25°C), 75 ns reverse recovery time (trr), and 20 pF junction capacitance-optimized for switching-mode power supplies in automotive and industrial DC/DC converters.
For engineers reviewing the HER157GH datasheet, HER157GH pinout, HER157GH application, or HER157GH equivalent, key selection criteria include its AEC-Q101 qualification, 800 V VRRM, 1.7 V VF at rated current, 75 ns trr, and DO-15 mechanical compatibility with automated tape-and-reel assembly.
Technical Context
HER157GH employs a glass-passivated single-die silicon junction optimized for high-speed switching and low conduction loss. Its 800 V VRRM and 75 ns trr enable efficient operation in 100–500 kHz SMPS topologies, while the 1.7 V forward voltage at 1.5 A minimizes I²R losses under continuous load.
The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, with pure tin-plated leads compliant to J-STD-002 solderability standards. Junction temperature range is −55°C to +150°C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input stages of 400 V AC-derived or 600 V DC bus systems without derating |
| IF | 1.5 A average - sustains continuous conduction in compact 15–25 W isolated flyback or forward converters |
| trr | 75 ns - reduces switching loss and EMI in high-frequency SMPS vs. standard rectifiers (>200 ns) |
| VF | 1.7 V @ 1.5 A, 25°C - lowers conduction loss by ~15% vs. comparable 1N54xx series at same current |
| CJ | 20 pF @ 1 MHz, 4 V - limits capacitive coupling noise in gate-drive or feedback paths |
| IFSM | 50 A @ 8.3 ms half-sine - withstands inrush and transient surges in unregulated input stages |
| RθJA | 60 °C/W - enables 1.5 A operation up to 75°C ambient on minimal copper area (≥1 cm²) |
Pinout & Package
HER157GH uses a DO-204AC (DO-15) axial-leaded package with cathode indicated by a band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or filter capacitor positive; blocks 800 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB, etc.) |
| Glass-passivated junction | Prevents moisture ingress and surface leakage, ensuring stable IR < 150 µA at 125°C and 800 V |
| Ultrafast recovery (75 ns) | Reduces reverse recovery charge (Qrr) to < 25 nC, minimizing snubber losses and MOSFET turn-on stress |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants without compromising UL 94V-0 rating |
| DO-15 mechanical standardization | Enables drop-in replacement in legacy designs using 1N400x, 1N54xx, or SF1x footprints with identical lead spacing and bend radius |
Applications
| Automotive DC/DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck-derived converter powering ADAS camera modules and radar ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology handling 1.2–1.5 A continuous load. Use Value: AEC-Q101 qualification and 150°C TJMAX ensure reliability in engine bay environments; 75 ns trr cuts switching loss by >30% vs. standard rectifiers. | Use Scenario: 48 V input telecom or factory automation PSU delivering 24 V/1.5 A to PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in active-clamp forward converter operating at 250 kHz. Use Value: 800 V VRRM accommodates reflected transients from 48 V bus; 1.7 V VF maintains >92% efficiency at full load. |
| LED Driver Secondary Rectification | UPS Inverter Freewheeling |
Use Scenario: Constant-current LED driver for street lighting, converting 300–400 V DC bus to regulated LED string current. IC Role / Device Role / Timing Role: High-voltage output rectifier in LLC resonant half-bridge configuration. Use Value: 20 pF CJ suppresses high-frequency ringing across LED string; glass passivation prevents humidity-induced leakage in outdoor enclosures. | Use Scenario: Bidirectional UPS inverter stage where HER157GH provides freewheeling path during MOSFET dead-time. IC Role / Device Role / Timing Role: Anti-parallel freewheeling diode across IGBTs in 600 V DC-link inverter bridge. Use Value: 50 A IFSM handles motor regeneration spikes; 75 ns trr prevents cross-conduction during fast PWM commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-HER158GHE3/45-E3 | Same DO-15 package, 1000 V VRRM, 1.75 V VF, 75 ns trr; AEC-Q101 qualified | Higher VRRM margin for 700 V DC bus designs; slightly higher VF increases conduction loss by ~3% | Select when system requires ≥1000 V blocking or extended lifetime under voltage overstress |
| ON Semiconductor MUR1580G | DO-15, 800 V VRRM, 1.75 V VF, 75 ns trr; not AEC-Q101 qualified | Lacks automotive qualification; identical electrical specs but no HTOL/TC validation | Acceptable for industrial/non-automotive use where cost sensitivity outweighs qualification requirement |
Compared with VS-HER158GHE3/45-E3 and MUR1580G, HER157GH offers optimal balance of 800 V rating, AEC-Q101 compliance, and 1.7 V VF-making it preferred for automotive-grade 400–600 V DC/DC converters where qualification and efficiency are jointly critical.
Availability
HER157GH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial switch-mode power supplies, and LED driver secondary rectification requiring stable component supply across production lifecycles.
Supply support for HER157GH 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 automotive, industrial, and consumer markets since 1979.
The HER15xG family was designed specifically for high-efficiency, high-reliability rectification in automotive-grade and industrial power conversion-emphasizing AEC-Q101 qualification, ultrafast recovery, and robust thermal performance in standard DO-15 packaging.
FAQ
What is the peak repetitive reverse voltage rating of HER157GH?
The HER157GH has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version I2105), where HER157G is explicitly listed with VRRM = 800 V. The "H" suffix denotes AEC-Q101 qualification but does not alter the voltage rating.
Is HER157GH pin-compatible with standard DO-15 rectifiers like 1N4007?
Yes, HER157GH uses the DO-204AC (DO-15) package with standard axial leads and 5.3 mm lead spacing, making it mechanically compatible with 1N4007, 1N5408, and SF18 footprints. However, its ultrafast 75 ns recovery and 800 V rating provide superior switching performance-requiring no PCB changes but enabling higher-frequency designs.
What is the forward voltage drop of HER157GH at maximum rated current?
The forward voltage (VF) of HER157GH is 1.7 V at 1.5 A and 25°C, as specified in the Electrical Specifications table under "HER156G, HER157G, HER158G" grouping. This value is measured under pulsed conditions (PW = 0.3 ms) and represents typical conduction loss at full rated DC current.
Does HER157GH require derating at elevated ambient temperatures?
Yes, HER157GH must be derated above 25°C ambient. Its thermal resistance RθJA is 60°C/W, and maximum junction temperature is 150°C. At 75°C ambient, maximum allowable average forward current drops to approximately 1.25 A to maintain TJ ≤ 150°C-per the Forward Current Derating Curve in the datasheet.
What does the "H" suffix in HER157GH signify?
Per Taiwan Semiconductor's Ordering Information table, the "H" suffix in HER157GH indicates AEC-Q101 qualification. This means the device has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and high-temperature reverse bias (HTRB), validating suitability for automotive power electronics applications.
HER157GH 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):
- 800 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 20pF @ 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
HER157GH FAQ
1.How can I place an order for HER157GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER157GH 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 HER157GH reliable?
The price and inventory of HER157GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER157GH is usually 5 days.
3.What payment methods are accepted for HER157GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER157GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER157GH?
HER157GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER157GH 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 HER157GH?
For technical support, including HER157GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER157GH requirements.
6.How does Aetrix verify that HER157GH is sourced from the original manufacturer or authorized distributors?
All HER157GH 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 HER157GH meets industry standards.
7.What is the process for return or replacement of HER157GH?
All HER157GH units undergo pre-shipment inspection (PSI). If there is an issue with HER157GH, 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 HER157GH part is unused and in its original packaging.
Return procedure for HER157GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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