My Inquiry
My Account
Taiwan Semiconductor Corporation HT14G A1G
- Part No.:
- HT14G A1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT14G A1G.pdf
- Description:
- DIODE GEN PURP 300V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:7,387
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HT14G A1G from Taiwan Semiconductor is a 300V, 1A glass-passivated high-efficiency rectifier diode in TS-1 package, featuring 1.0V forward voltage at 1A/25°C, 30A surge capability, and AEC-Q101 qualification. It serves as a primary output rectifier in DC-DC converters and freewheeling diode in switching inverters.
For engineers reviewing the HT14G A1G datasheet, HT14G A1G pinout, HT14G A1G application, or HT14G A1G equivalent, this page delivers verified electrical parameters, thermal resistance (95°C/W), reverse recovery time (50 ns), junction capacitance (15 pF), and mechanical details for automotive-grade power supply design and layout validation.
Technical Context
This device is a single-die, planar epitaxial silicon rectifier with glass-passivated junction for enhanced moisture and contamination resistance. Its 300V repetitive peak reverse voltage (VRRM) and 210V RMS reverse voltage support medium-voltage industrial and automotive DC-DC stages.
The diode operates across –55°C to +150°C junction temperature range and exhibits low trr (50 ns) under IF = 0.5A / IR = 1.0A / Irr = 0.25A conditions, enabling efficient high-frequency switching operation without excessive switching loss or EMI generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - supports 210 Vrms input in AC-DC front-end or 300 V bus clamping in DC-DC secondary side |
| IF | 1 A continuous - suitable for low-to-medium power SMPS outputs up to ~12 W at 12 V |
| VF @ 1A, 25°C | 1.0 V - reduces conduction loss to 1.0 W per diode, critical for thermal management in sealed enclosures |
| IFSM (8.3 ms) | 30 A - withstands inrush and transient surges common during cold-start or load dump events |
| trr | 50 ns - enables stable operation up to ~2 MHz switching frequency with minimal reverse recovery loss |
| RθJA | 95 °C/W - requires ≥100 mm² copper pour on PCB for safe 1A operation at 70°C ambient |
| CJ @ 1 MHz, 4 V | 15 pF - limits capacitive coupling noise in high dv/dt gate-drive or feedback paths |
Pinout & Package
TS-1 package: molded epoxy case meeting UL 94V-0, pure tin-plated leads compliant with J-STD-002 solderability, cathode indicated by band, weight ≈0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return path) |
| Cathode | Current exit point during forward conduction; marked with band | Connected to output rail or energy storage capacitor positive terminal; polarity must be observed for reverse blocking |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring reliability under temperature cycling, humidity, and vibration stress |
| Glass-passivated junction | Eliminates need for conformal coating in humid environments; prevents leakage current drift over 10+ year field life |
| Low VF (1.0 V @ 1A) | Reduces heat generation by >25% vs. standard 1N4007 (1.3 V), extending thermal margin in compact layouts |
| High IFSM (30 A) | Survives 10× rated current surges without bond-wire fusing-critical for unregulated input stages |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and end-of-life processing |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; no timing function. Use Value: 1.0 V VF minimizes power loss and heatsink requirements; 50 ns trr avoids cross-conduction in synchronous designs. | Use Scenario: Freewheeling path for inductive loads (e.g., motor windings, solenoids) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during MOSFET off-time; no control or timing logic. Use Value: 30 A IFSM handles motor stall currents; glass passivation ensures long-term reliability under thermal cycling. |
| Automotive LED Driver Supply | Industrial Sensor Power Rail |
Use Scenario: Input rectification stage in 12 V automotive LED driver modules operating in engine bay environments. IC Role / Device Role / Timing Role: AC input rectifier feeding buck controller; operates continuously under wide ambient temperature swing. Use Value: AEC-Q101 qualification and –55°C to +150°C TJ rating ensure startup at sub-zero temperatures and survival at under-hood highs. | Use Scenario: Auxiliary power supply rectifier for 24 V industrial sensors exposed to condensation and chemical vapors. IC Role / Device Role / Timing Role: Primary rectifier in linear or low-frequency SMPS powering analog signal conditioning circuitry. Use Value: Glass-passivated junction prevents parameter shift due to moisture ingress; halogen-free construction meets IPC-J-STD-020 reflow compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R03S | Same VRRM (300 V), VF = 1.05 V @ 1A, trr = 45 ns, TO-277A package (smaller footprint) | Higher thermal density; requires tighter layout for same RθJA | Preferred where board space is constrained and thermal interface is optimized |
| ON Semi MUR130 | VRRM = 300 V, VF = 1.15 V @ 1A, trr = 50 ns, DO-41 package (larger, axial lead) | Lower surge rating (25 A), no AEC-Q101 qualification | Suitable for cost-sensitive industrial non-automotive use with manual assembly |
Compared with STTH1R03S and MUR130, HT14G A1G offers AEC-Q101 certification and TS-1 surface-mount compatibility while maintaining competitive VF and trr-making it optimal for automotive-grade SMT production where reliability and manufacturability are jointly prioritized.
Availability
HT14G A1G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching inverter freewheeling, and automotive LED driver supply requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for HT14G A1G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS, MOSFETs, and IGBTs, with global distribution and AEC-Q101 validation capability.
The HT1xG series is designed specifically for high-reliability, medium-voltage rectification in automotive and industrial power conversion systems where efficiency, surge robustness, and long-term stability are mandatory.
FAQ
What is the maximum junction temperature rating for HT14G A1G?
The HT14G A1G has a maximum junction temperature (TJ MAX) of +150°C, validated across its full operating range from –55°C to +150°C. This rating allows reliable operation in under-hood automotive environments and sealed industrial enclosures when mounted on ≥100 mm² copper area. The HT14G A1G thermal performance is characterized with RθJA = 95°C/W under standard JEDEC test conditions.
Is HT14G A1G pin-compatible with other HT1xG variants like HT13G or HT15G?
No-HT14G A1G shares the same TS-1 package and two-terminal configuration with all HT1xG family members, but voltage ratings differ: HT14G A1G is rated for 300 V VRRM, while HT13G is 200 V and HT15G is 400 V. Substituting across variants requires verification of reverse voltage margin and thermal derating. The HT14G A1G marking code "HT14G" uniquely identifies its 300 V rating.
Does HT14G A1G require a heatsink for 1 A continuous operation?
HT14G A1G does not require an external heatsink at 1 A if mounted on ≥100 mm² of 2-oz copper on FR-4 PCB, given its RθJA = 95°C/W and VF = 1.0 V (1.0 W dissipation). At 70°C ambient, junction temperature reaches ~165°C-exceeding rating-so derating to 0.85 A or adding thermal relief is recommended. The HT14G A1G datasheet specifies thermal curves for precise layout-based derating.
What does the "A1G" suffix indicate in HT14G A1G?
The "A1G" suffix in HT14G A1G denotes AEC-Q101 qualification (A), green/halogen-free molding compound (1), and tape-and-reel packaging (G). It distinguishes this variant from standard HT14G (no qualification) and HT14G A0G (ammo box packaging). The HT14G A1G meets automotive reliability standards including temperature cycling, HAST, and whisker resistance per JESD201 Class 2.
How does HT14G A1G compare to standard 1N4007 in switching applications?
HT14G A1G outperforms 1N4007 in switching applications with VF = 1.0 V (vs. 1.3 V), trr = 50 ns (vs. >2 µs), and IFSM = 30 A (vs. 30 A but with inferior thermal robustness). Its glass-passivated junction and TS-1 SMT package enable higher frequency operation, better thermal response, and automated assembly-making HT14G A1G unsuitable as a drop-in replacement for through-hole 1N4007 but superior in modern SMPS designs.
HT14G A1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 300 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT14G A1G FAQ
1.How can I place an order for HT14G A1G through Aetrix?
Please submit a Request for Quotation (RFQ) for HT14G A1G 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 HT14G A1G reliable?
The price and inventory of HT14G A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT14G A1G is usually 5 days.
3.What payment methods are accepted for HT14G A1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT14G A1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT14G A1G?
HT14G A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT14G A1G 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 HT14G A1G?
For technical support, including HT14G A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT14G A1G requirements.
6.How does Aetrix verify that HT14G A1G is sourced from the original manufacturer or authorized distributors?
All HT14G A1G 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 HT14G A1G meets industry standards.
7.What is the process for return or replacement of HT14G A1G?
All HT14G A1G units undergo pre-shipment inspection (PSI). If there is an issue with HT14G A1G, 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 HT14G A1G part is unused and in its original packaging.
Return procedure for HT14G A1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HT14G A1G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
