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Taiwan Semiconductor Corporation HER108G B0G
- Part No.:
- HER108G B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER108G B0G.pdf
- Description:
- DIODE GEN PURP 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,110
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Product details
Overview
HER108G B0G from Taiwan Semiconductor is a high-efficiency, single-die, glass-passivated silicon rectifier diode rated for 1 A average forward current and 1000 V repetitive peak reverse voltage, with 30 A surge capability and 1.7 V typical forward voltage at 1 A and 25°C - used in high-voltage DC-DC converters and freewheeling paths in industrial switching inverters.
For engineers reviewing the HER108G B0G datasheet, HER108G B0G pinout, HER108G B0G application, or HER108G B0G equivalent, key selection factors include its DO-204AL (DO-41) package, 75 ns reverse recovery time, 10 pF junction capacitance at 1 MHz/4 V, AEC-Q101 qualification eligibility (B0G suffix indicates standard grade), and thermal resistance of 60°C/W junction-to-ambient.
Technical Context
This device operates as a unidirectional power rectifier with a PN junction optimized for fast recovery and low conduction loss. Its 1000 V VRRM, 30 A IFSM, and 75 ns trr support high-frequency switching topologies where voltage clamping and energy recirculation are critical.
The DO-204AL package features pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and cathode polarity indicated by a band. Junction temperature range is −55°C to +150°C, with RθJA = 60°C/W and RθJC = 15°C/W enabling reliable operation under forced-air or moderate PCB copper heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in offline SMPS up to 800 V DC bus with safety margin |
| IF | 1 A continuous - suitable for auxiliary rails or low-power output stages in multi-output converters |
| IFSM | 30 A (8.3 ms half-sine) - withstands startup surges and transient overloads without failure |
| VF | 1.7 V typ @ 1 A, 25°C - limits conduction loss to ~1.7 W at full load, reducing thermal stress |
| trr | 75 ns - minimizes switching losses and EMI in 50–500 kHz hard-switched converters |
| CJ | 10 pF @ 1 MHz, 4 V - reduces capacitive coupling noise in high-dv/dt gate-drive or snubber circuits |
| RθJA | 60 °C/W - enables 1 A operation up to +70°C ambient on standard FR-4 with 1 in² copper pour |
Pinout & Package
HER108G B0G uses the DO-204AL (DO-41) axial-leaded package: cylindrical glass-passivated body, 2.2 mm diameter, 5.2 mm length, cathode band marking, pure tin-plated leads, 0.33 g weight, and UL 94V-0 rated epoxy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Current exit terminal during forward conduction; marked by band | Connected to output rail or filter capacitor positive; defines polarity-sensitive placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Prevents moisture ingress and surface leakage, ensuring stable IR < 5 µA at 25°C and 1000 V |
| High surge current rating (30 A) | Supports repeated cold-start conditions in industrial power supplies without derating |
| Low junction capacitance (10 pF) | Reduces displacement current in high-frequency snubbers and improves EMI filter effectiveness |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for automotive and industrial end equipment |
Applications
| Industrial DC-DC Converters | Switch-Mode Inverters |
|---|---|
Use Scenario: Isolated 24 V to 48 V step-up converter in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Output rectifier in forward or flyback topology handling 1 A continuous load with 1000 V isolation barrier. Use Value: 75 ns trr and 1.7 V VF jointly reduce total power loss to < 2.0 W, enabling compact heatsinkless design. | Use Scenario: Freewheeling diode across IGBTs in 3-phase motor drive inverters operating at 120 Hz–20 kHz PWM. IC Role / Device Role / Timing Role: Energy recirculation path during IGBT turn-off, clamping inductive kickback. Use Value: 30 A IFSM absorbs worst-case short-circuit energy; 1000 V VRRM covers 600 V bus + 65% margin. |
| AC-DC Auxiliary Supplies | High-Voltage Battery Chargers |
Use Scenario: Bias supply rectifier in 1 kW telecom rectifier, deriving +15 V for control ICs from auxiliary winding. IC Role / Device Role / Timing Role: Low-current, high-reliability rectifier exposed to wide input transients and thermal cycling. Use Value: Glass passivation and −55°C to +150°C TJ ensure >10-year field life in unventilated enclosures. | Use Scenario: Output stage rectifier in 800 V battery charging module for electric forklifts. IC Role / Device Role / Timing Role: Main DC output rectifier converting three-phase bridge output to stabilized HV DC bus. Use Value: 1000 V VRRM accommodates 800 V nominal plus line regulation and transient spikes per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | 600 V VRRM, 1.15 V VF, 50 ns trr, TO-220AC package | Limited to ≤600 V systems; requires heatsink above 0.5 A due to higher RθJA | Prefer when lower VF and faster trr outweigh voltage headroom needs and board space allows TO-220 mounting. |
| ES1J | 600 V VRRM, 1.7 V VF, 35 ns trr, DO-204AL package | Lower voltage rating; optimized for speed over ruggedness - IFSM = 30 A but only rated to 600 V | Select for 400–600 V designs prioritizing minimal reverse recovery loss over maximum surge robustness. |
Compared with STTH1R06 and ES1J, HER108G B0G uniquely delivers 1000 V blocking with DO-204AL form factor and 30 A surge tolerance - making it the only option among the three for 800 V+ auxiliary or freewheeling roles without layout or thermal redesign.
Availability
HER108G B0G is available at Aetrix Electronics and suitable for industrial DC-DC converters, switch-mode inverters, and high-voltage battery chargers requiring stable component supply and long-term manufacturing continuity.
Supply support for HER108G B0G 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 for industrial and automotive markets.
The HER101G–HER108G family is engineered for high-efficiency, high-reliability AC/DC and DC/DC power conversion - emphasizing ruggedness, fast recovery, and extended temperature operation in harsh environments.
FAQ
What is the maximum junction temperature rating for HER108G B0G?
The HER108G B0G has a maximum junction temperature (TJ) of +150°C and a storage temperature range of −55°C to +150°C. This rating enables operation in sealed industrial enclosures or under elevated ambient conditions when mounted on adequate copper area. Thermal design must respect RθJA = 60°C/W to avoid exceeding TJ at full 1 A load.
Does HER108G B0G meet AEC-Q101 reliability standards?
No - HER108G B0G carries the B0G suffix, indicating standard industrial grade. The AEC-Q101 qualified version is HER108GH (with 'H' suffix). While HER108G B0G shares identical electrical and mechanical specs, only HER108GH has undergone the full stress-test sequence required for automotive under-hood applications.
What is the reverse recovery time (trr) of HER108G B0G and how is it measured?
The HER108G B0G has a typical reverse recovery time (trr) of 75 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value reflects its performance in hard-switched topologies and is confirmed in the official Taiwan Semiconductor L2104 datasheet, page 2.
Can HER108G B0G replace HER107G in an existing design?
Yes - HER108G B0G is a direct upgrade from HER107G (800 V) with identical DO-204AL package, pinout, thermal characteristics, and forward voltage. The only change is increased VRRM from 800 V to 1000 V, offering additional margin against voltage transients without requiring PCB or thermal redesign.
What does the 'B0G' suffix mean in HER108G B0G?
The 'B0G' suffix in HER108G B0G denotes packaging and environmental compliance: 'B' = tape-and-reel packaging (5,000 pcs), '0' = standard temperature grade (non-AEC-Q101), and 'G' = green (halogen-free) molding compound compliant with IEC 61249-2-21. It is not a revision code or performance variant.
HER108G B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER108G B0G FAQ
1.How can I place an order for HER108G B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER108G B0G 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 HER108G B0G reliable?
The price and inventory of HER108G B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER108G B0G is usually 5 days.
3.What payment methods are accepted for HER108G B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER108G B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER108G B0G?
HER108G B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER108G B0G 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 HER108G B0G?
For technical support, including HER108G B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER108G B0G requirements.
6.How does Aetrix verify that HER108G B0G is sourced from the original manufacturer or authorized distributors?
All HER108G B0G 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 HER108G B0G meets industry standards.
7.What is the process for return or replacement of HER108G B0G?
All HER108G B0G units undergo pre-shipment inspection (PSI). If there is an issue with HER108G B0G, 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 HER108G B0G part is unused and in its original packaging.
Return procedure for HER108G B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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