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Taiwan Semiconductor Corporation HER158G-K
- Part No.:
- HER158G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER158G-K.pdf
- Description:
- 75NS, 1.5A, 1000V, HIGH EFFICIEN
- Quantity:
- Payment:
- Shipping:
Inventory:8,543
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Product details
Overview
HER158G-K from Taiwan Semiconductor is a 1000 V, 1.5 A high-efficiency ultrafast recovery rectifier diode in DO-204AC (DO-15) package, featuring 75 ns reverse recovery time, 1.7 V max forward voltage at 1.5 A, and 50 A surge capability - used in switching-mode power supplies and DC-DC converters requiring low-loss freewheeling.
For engineers reviewing the HER158G-K datasheet, HER158G-K pinout, HER158G-K application, or HER158G-K equivalent, key selection criteria include repetitive peak reverse voltage (1000 V), thermal resistance (60 °C/W), junction capacitance (20 pF), RoHS/halogen-free compliance, and DO-15 mechanical compatibility with standard through-hole layouts.
Technical Context
This device is a single-die, glass-passivated silicon PN junction rectifier optimized for high-voltage, medium-current switching applications. Its ultrafast recovery (trr ≤ 75 ns) and low VF (≤ 1.7 V @ 1.5 A) reduce switching losses and conduction losses simultaneously in high-frequency converters.
The HER158G-K operates across -55°C to +150°C junction temperature range with 60 °C/W junction-to-ambient thermal resistance. It uses pure tin-plated leads compliant with J-STD-002 and meets JESD 201 Class 1A whisker resistance, supporting reliable soldering in industrial assembly environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input rectification in 800 V AC line-derived or high-bus DC systems without breakdown |
| IF | 1.5 A continuous - delivers stable output current in compact SMPS designs up to ~30 W |
| trr | 75 ns - enables operation at ≥100 kHz switching frequencies with minimal reverse recovery loss |
| VF (max) | 1.7 V @ 1.5 A - limits conduction loss to ≤2.55 W per diode under full load |
| RθJA | 60 °C/W - requires minimal heatsinking for ambient temperatures ≤70°C at full rated current |
| CJ | 20 pF @ 4 V - reduces capacitive coupling noise in high-dV/dt gate-drive or snubber circuits |
| IFSM | 50 A (8.3 ms) - withstands inrush surges during cold-start of offline converters |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, glass-passivated, cathode indicated by band. Weight: 0.400 g. UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Current exit point during forward conduction; reverse-blocking terminal | Marked with band; ties to output rail or filter capacitor positive; blocks 1000 V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| Ultrafast trr ≤ 75 ns | Reduces switching loss and EMI generation in 100–500 kHz SMPS topologies |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and global environmental directives for industrial shipments |
| Pure tin plating (J-STD-002) | Ensures consistent wetting and void-free solder joints in wave and reflow processes |
| Junction temp limit +150°C | Supports operation in sealed enclosures or high-ambient environments without derating below 1.5 A |
Applications
| AC-DC Front-End Rectification | DC-DC Flyback Secondary Side |
|---|---|
Use Scenario: Rectifying 400–800 V DC bus derived from three-phase rectified input in industrial motor drives. IC Role / Device Role / Timing Role: High-voltage output rectifier handling continuous 1.5 A with minimal conduction loss. Use Value: 1000 V VRRM prevents avalanche failure during line transients; 1.7 V VF keeps power loss under 2.6 W at full load. | Use Scenario: Output rectification in 24 V/1.2 A flyback converter powering PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time at 150 kHz switching frequency. Use Value: 75 ns trr minimizes reverse recovery tail, reducing output ripple and improving efficiency by ~1.2% vs. standard FRDs. |
| Switch-Mode Inverter Auxiliary Supply | Freewheeling in Inductive Load Drivers |
Use Scenario: Generating isolated 15 V bias supply for gate drivers in 650 V SiC inverter stacks. IC Role / Device Role / Timing Role: Secondary-side rectifier in auxiliary flyback, operating at 250 kHz with tight regulation. Use Value: Low CJ (20 pF) avoids coupling switching noise into feedback loop; DO-15 footprint simplifies layout reuse. | Use Scenario: Clamping back-EMF in 24 V solenoid control circuits with 1 A steady-state current. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy dissipation when driving transistor turns off. Use Value: 50 A IFSM handles 10× rated current spikes; 150 °C TJ rating ensures survival during intermittent overloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1 A IF, 50 ns trr, SOD-123FL package | Limited to ≤600 V systems; surface-mount only; lower surge rating (30 A) | Choose for space-constrained 600 V designs where ultrafast speed outweighs voltage headroom |
| VS-HER158-M3/54 | 1000 V VRRM, 1.5 A IF, 75 ns trr, DO-15, Vishay datasheet matches TSC specs | Identical electrical and mechanical specs; dual-sourced for supply chain redundancy | Select when second-source assurance or Vishay-aligned BOMs are required |
Compared with STTH1L06S, HER158G-K provides 400 V higher blocking margin and through-hole assembly flexibility; versus VS-HER158-M3/54, it offers identical performance with Taiwan Semiconductor's green compound and date-code marking system.
Availability
HER158G-K is available at Aetrix Electronics and suitable for AC-DC front-end rectification, DC-DC flyback secondary side, switch-mode inverter auxiliary supply, and freewheeling in inductive load drivers requiring stable component supply and long-lifecycle support.
Supply support for HER158G-K 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 industrial, computing, and consumer markets since 1979.
The HER series high-efficiency rectifiers are designed specifically for high-reliability, high-frequency switching power conversion - emphasizing low VF, fast trr, and robust thermal performance in cost-sensitive through-hole packages.
FAQ
What is the maximum repetitive peak reverse voltage rating for HER158G-K?
The HER158G-K has a guaranteed repetitive peak reverse voltage (VRRM) rating of 1000 V, verified per Taiwan Semiconductor's B2105 datasheet. This allows safe operation in 700 V DC bus systems with 30% transient margin. The HER158G-K must not be substituted with lower-voltage variants like HER157G-K (800 V) in 1000 V applications without redesign validation.
Does HER158G-K meet RoHS and halogen-free requirements?
Yes, the HER158G-K is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the official Taiwan Semiconductor datasheet (Version B2105). The device uses green molding compound and pure tin-plated leads, satisfying both environmental compliance and solderability standards including J-STD-002.
What is the reverse recovery time (trr) specification for HER158G-K?
The HER158G-K has a maximum reverse recovery time (trr) of 75 ns under specified test conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). This ultrafast recovery enables efficient operation in switching power supplies above 100 kHz. The HER158G-K's trr is measured per JEDEC standards and is not subject to derating with temperature in the published datasheet.
Can HER158G-K be used as a direct replacement for HER157G-K?
No - while both share the same DO-15 package and 1.5 A rating, the HER158G-K is rated for 1000 V VRRM versus 800 V for HER157G-K. Substituting HER158G-K for HER157G-K is electrically safe but may incur cost and availability trade-offs; substituting HER157G-K for HER158G-K risks catastrophic failure in 1000 V applications. Always verify system voltage margins before interchange.
What is the thermal resistance (RθJA) of HER158G-K in free-air conditions?
The HER158G-K exhibits a junction-to-ambient thermal resistance (RθJA) of 60 °C/W under standard DO-15 mounting conditions on FR-4 PCB with 1-inch² copper pad. This value assumes no added heatsink; actual RθJA improves with larger copper areas or forced airflow. The HER158G-K's 150 °C maximum junction temperature allows full 1.5 A current at ambient ≤70°C without derating.
HER158G-K 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):
- 1000 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 @ 1000 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER158G-K FAQ
1.How can I place an order for HER158G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER158G-K 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 HER158G-K reliable?
The price and inventory of HER158G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER158G-K is usually 5 days.
3.What payment methods are accepted for HER158G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER158G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER158G-K?
HER158G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER158G-K 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 HER158G-K?
For technical support, including HER158G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER158G-K requirements.
6.How does Aetrix verify that HER158G-K is sourced from the original manufacturer or authorized distributors?
All HER158G-K 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 HER158G-K meets industry standards.
7.What is the process for return or replacement of HER158G-K?
All HER158G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER158G-K, 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 HER158G-K part is unused and in its original packaging.
Return procedure for HER158G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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