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Taiwan Semiconductor Corporation HER158G
- Part No.:
- HER158G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER158G.pdf
- Description:
- DIODE GEN PURP 1.5A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
HER158G from Taiwan Semiconductor is a high-efficiency, glass-passivated silicon rectifier diode rated for 1000 V repetitive peak reverse voltage (VRRM), 1.5 A average forward current (IF), and 50 A non-repetitive surge current (IFSM), used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HER158G datasheet, HER158G pinout, HER158G application, or HER158G equivalent, key selection criteria include its 1.7 V forward voltage at 1.5 A/25°C, 75 ns reverse recovery time, 20 pF junction capacitance at 1 MHz/4 V, DO-204AC (DO-15) package, and AEC-Q101 qualification option (HER158GH).
Technical Context
The HER158G operates as a single-die, unidirectional, fast-recovery rectifier optimized for high-voltage switching applications. Its 1000 V VRRM rating enables use in 800 V-class DC bus systems, while its 75 ns trr supports operation up to ~1 MHz in hard-switched topologies.
Thermal performance is defined by a 60 °C/W junction-to-ambient thermal resistance (RθJA) in standard PCB mounting, with maximum junction temperature of 150 °C and reverse leakage limited to 5 µA at 25 °C and 150 µA at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Supports rectification in 800 V DC-link applications without derating |
| IF | 1.5 A - Continuous conduction capability at TA = 75 °C with standard PCB layout |
| VF @ 1.5 A, 25 °C | 1.7 V - Directly impacts conduction loss: ~2.55 W dissipation at full load |
| trr | 75 ns - Enables efficient operation in 500 kHz–1 MHz SMPS with reduced switching loss |
| CJ @ 1 MHz, 4 V | 20 pF - Low capacitance minimizes capacitive coupling and EMI in high-dv/dt environments |
| IFSM | 50 A - Withstands inrush currents during cold-start of industrial power supplies |
| RθJA | 60 °C/W - Requires ≥1 cm² copper pour for thermal management at full IF |
Pinout & Package
HER158G is housed in a DO-204AC (DO-15) axial-leaded package with cathode indicated by a band; leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor positive; blocks 1000 V reverse potential |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under humidity and thermal cycling per JESD22-A101 |
| AEC-Q101 qualified variant (HER158GH) | Validated for automotive under-hood applications including engine control and ADAS power stages |
| Low VF and low CJ | Reduces both conduction loss (1.7 V @ 1.5 A) and high-frequency switching noise (20 pF) |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for industrial and medical-grade power enclosures |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Isolated flyback or forward converter in telecom power modules delivering 12–48 V outputs from 370–400 V DC bus. IC Role / Device Role / Timing Role: Output rectifier handling continuous 1.5 A load with 1000 V standoff for primary-side fault isolation. Use Value: 1.7 V VF limits conduction loss to ≤2.6 W; 75 ns trr avoids tail-current losses in 200–500 kHz operation. | Use Scenario: Single-phase H-bridge inverter for HVAC variable-speed drives operating from 600 V DC link. IC Role / Device Role / Timing Role: Freewheeling diode across IGBTs, clamping inductive kickback during turn-off. Use Value: 50 A IFSM absorbs motor regeneration surges; 1000 V VRRM ensures margin against 1.2× DC bus overvoltage. |
| Industrial SMPS | Automotive Power Supply |
Use Scenario: 100 W open-frame AC-DC adapter for factory automation controllers with universal input (85–265 VAC). IC Role / Device Role / Timing Role: Primary-side bridge rectifier in voltage-doubler configuration during low-line operation. Use Value: 1000 V rating allows safe operation at 2× peak line voltage (2× 375 V ≈ 750 V), with 25 % margin. | Use Scenario: 12 V auxiliary power supply in battery management systems (BMS) for EV traction batteries. IC Role / Device Role / Timing Role: Input rectifier in isolated DC-DC stage converting 400–800 V battery voltage to 12 V for MCU and sensors. Use Value: AEC-Q101-qualified HER158GH variant meets automotive temperature (-40 to +150 °C) and reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L10S | 1000 V VRRM, 1 A IF, 60 ns trr, TO-220AC package | Lower current rating; requires heatsink above 0.7 A; not axial-leaded | Preferred where higher surge immunity and surface-mount compatibility are needed |
| VS-HER158 | 1000 V VRRM, 1.5 A IF, 75 ns trr, DO-15 package, Vishay branding | Same electrical specs and footprint; RoHS-compliant but not AEC-Q101 qualified by default | Drop-in replacement for non-automotive designs requiring second-source availability |
Compared with STTH1L10S and VS-HER158, the HER158G offers identical DO-15 mechanical fit and 1.5 A rating, while enabling AEC-Q101 compliance via the HER158GH variant-critical for automotive BMS and ADAS power stages where qualification traceability is mandatory.
Availability
HER158G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial SMPS requiring stable component supply with consistent parametric performance across production lots.
Supply support for HER158G 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 diodes, and MOSFETs since 1979.
The HER151G–HER158G series was designed specifically for high-efficiency, high-reliability AC-DC and DC-DC conversion in industrial, telecom, and automotive power systems demanding robust surge handling and low conduction loss.
FAQ
What is the maximum junction temperature for HER158G?
The HER158G has a maximum junction temperature (TJ) of +150 °C, verified per JEDEC JESD22-A108. Operation at this limit requires thermal design ensuring RθJA ≤ 60 °C/W under worst-case ambient and airflow conditions. Derating curves in the HER158G datasheet specify usable IF versus TA; at 100 °C ambient, max IF drops to ~0.9 A.
Is HER158G pin-compatible with other HER15xG variants?
Yes, all HER151G through HER158G share identical DO-204AC (DO-15) package dimensions, lead spacing, and polarity marking (cathode band), making them mechanically interchangeable. However, electrical parameters differ significantly-especially VRRM (50 V to 1000 V) and VF (1.0 V to 1.7 V)-so substitution requires verification of voltage and loss requirements in the target circuit.
Does HER158G meet automotive qualification standards?
The base HER158G is not AEC-Q101 qualified, but the HER158GH variant-identical in all electrical and mechanical specifications-is fully AEC-Q101 qualified per Rev I2105 documentation. HER158GH is intended for automotive power conversion applications including onboard chargers and DC-DC converters in EV/HEV systems.
What is the reverse leakage current of HER158G at elevated temperature?
At rated 1000 V reverse voltage and TJ = 125 °C, the HER158G exhibits a maximum reverse leakage current (IR) of 150 µA, per test condition Note 2 (30 ms pulse). This value is critical for standby power budgeting in high-voltage hold-up circuits, where cumulative leakage across multiple diodes can impact no-load consumption.
How does HER158G's junction capacitance affect EMI in high-frequency SMPS?
HER158G's typical junction capacitance is 20 pF at 1 MHz and 4 V reverse bias. This low CJ reduces high-frequency displacement current during switching transitions, directly lowering common-mode EMI generation in >300 kHz flyback and LLC converters-particularly beneficial when placed across transformer windings or snubber networks.
HER158G 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 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 FAQ
1.How can I place an order for HER158G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER158G 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 reliable?
The price and inventory of HER158G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER158G is usually 5 days.
3.What payment methods are accepted for HER158G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER158G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER158G?
HER158G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER158G 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?
For technical support, including HER158G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER158G requirements.
6.How does Aetrix verify that HER158G is sourced from the original manufacturer or authorized distributors?
All HER158G 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 meets industry standards.
7.What is the process for return or replacement of HER158G?
All HER158G units undergo pre-shipment inspection (PSI). If there is an issue with HER158G, 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 part is unused and in its original packaging.
Return procedure for HER158G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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