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STMicroelectronics STTH802BY-TR
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- Part No.:
- STTH802BY-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STTH802BY-TR.pdf
- Description:
- DIODE GEN PURP 200V 8A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,120
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Product details
Overview
STTH802BY-TR from STMicroelectronics is an automotive-grade ultrafast recovery silicon diode in DPAK package, rated for 200 V repetitive peak reverse voltage, 8 A average forward current, and 175 °C maximum junction temperature. It delivers low conduction losses (VF typ. 0.8 V @ 25 °C), negligible switching losses, and fast reverse recovery (trr typ. 17 ns @ IF = 1 A, dIF/dt = −100 A/µs), enabling use in high-frequency inverters and polarity protection circuits in engine control units.
For engineers reviewing the STTH802BY-TR datasheet, STTH802BY-TR pinout, STTH802BY-TR application, or STTH802BY-TR equivalent, key selection criteria include its AEC-Q101 qualification, 3.2 °C/W junction-to-case thermal resistance, low IR (6 µA @ 25 °C), and dynamic performance under high dIF/dt conditions up to 200 A/µs.
Technical Context
This diode employs ST's planar platinum-doped technology to achieve stable ultrafast recovery with minimal tail current, supporting high-efficiency switching in low-voltage DC-DC stages and freewheeling paths. Its 175 °C Tj rating and −40 to +175 °C operating range enable direct integration into under-hood automotive power modules without derating.
The device exhibits low forward voltage drop (0.8–0.9 V @ 150 °C, 8 A) and tightly controlled reverse recovery behavior (trr 17–22 ns, IRM 5.5–7 A under harsh test conditions), making it suitable for synchronous rectification support and snubberless flyback topologies where EMI and thermal management are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports 12 V/24 V automotive systems with ≥2× safety margin against load dump transients |
| IF(AV) | 8 A @ Tc = 145 °C - enables continuous operation in compact heatsinked layouts without forced air |
| trr (typ) | 17 ns @ IF = 1 A, dIF/dt = −100 A/µs - reduces switching loss and EMI in >100 kHz converters |
| VF (max) | 1.05 V @ 25 °C, 8 A - limits conduction loss to ≤8.4 W at full rated current |
| Rth(j-c) | 3.2 °C/W - allows direct mounting to PCB copper pour or small metal heatsink for thermal compliance |
| Tj (max) | 175 °C - meets under-hood ambient requirements per ISO 16750-4 without thermal shutdown |
| IR (max) | 60 µA @ 125 °C, VR = VRRM - ensures minimal leakage in battery-disconnect and always-on circuits |
Pinout & Package
Package: DPAK (TO-252), surface-mount, lead-free, UL94 V0 epoxy, with exposed cathode tab for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry | Connected to low-side switch node or input rail; requires low-inductance trace routing |
| Cathode (K) | Forward current exit / heat path | Exposed metal tab serves as primary thermal interface and circuit return; must be soldered to ≥2 cm² copper area |
| Tab (K) | Thermal & electrical common | Electrically tied to cathode; provides <3.2 °C/W thermal path to PCB; no isolation required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements including HTOL, TC, and HAST |
| Ultrafast trr (17 ns typ.) | Enables >200 kHz switching frequency while maintaining <5% efficiency penalty from recovery loss |
| Low VF (0.8 V @ 150 °C) | Reduces forward conduction loss by ~30% vs. standard FRD counterparts at elevated temperature |
| High Tj (175 °C) | Eliminates need for external thermal sensors or derating in engine bay-mounted DC-DC modules |
| DPAK thermal performance | 3.2 °C/W Rth(j-c) allows 8 A continuous current with ≤50 °C rise over 125 °C case temperature |
Applications
| Engine Control Unit (ECU) Power Stage | Automotive LED Headlamp Driver |
|---|---|
Use Scenario: Freewheeling path in high-side N-channel MOSFET-based buck converter supplying 5 V/3 A to microcontroller and sensors. IC Role / Device Role / Timing Role: Ultrafast recovery diode providing low-loss current recirculation during MOSFET off-time; replaces slower FR107-type diodes. Use Value: Reduces switching loss by 42% and junction temperature rise by 18 °C compared to legacy 50 ns diodes at 150 kHz. | Use Scenario: Polarity protection and reverse-current blocking in 12 V input stage of adaptive LED matrix driver. IC Role / Device Role / Timing Role: Bidirectional protection diode placed upstream of DC-DC controller IC; handles reverse battery connection events. Use Value: Withstands 100 A surge (10 ms) and maintains <60 µA leakage at 125 °C, preventing false shutdown during hot cranking. |
| On-Board Charger (OBC) Auxiliary Supply | Start-Stop System DC-Link Clamp |
Use Scenario: Output rectifier in isolated flyback auxiliary supply powering gate drivers and communication ICs. IC Role / Device Role / Timing Role: High-frequency rectifier operating at 250 kHz with low trr to minimize ringing and EMI filter size. Use Value: Enables 30% smaller common-mode choke and eliminates need for RC snubber due to clean reverse recovery waveform. | Use Scenario: Clamp diode across IGBT half-bridge in 48 V start-stop boost converter to absorb inductive kickback. IC Role / Device Role / Timing Role: Fast-recovery clamp element limiting voltage overshoot during turn-off of high-dI/dt power switches. Use Value: Limits peak clamp voltage to <220 V with <15 ns delay, protecting 250 V-rated IGBTs without TVS supplementation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R02DJ-TR | Same VRRM (200 V), higher IF(AV) = 8 A @ Tc = 150 °C, lower trr = 12 ns, D2PAK package | Requires larger footprint and higher thermal mass; better suited for >10 A continuous designs | Select when higher surge capability (IFS M = 120 A) and lower trr are prioritized over board space |
| VS-8EWH02FN-M3 | VRRM = 200 V, IF(AV) = 8 A, trr = 25 ns (typ.), TO-220AC package, non-AEC-Q101 | Through-hole mounting only; lacks automotive qualification and high-temperature reliability data | Acceptable for industrial prototypes but not for production automotive ECUs requiring AEC-Q101 traceability |
Compared with STTH8R02DJ-TR and VS-8EWH02FN-M3, the STTH802BY-TR uniquely balances AEC-Q101 compliance, DPAK space efficiency, and 17 ns trr-making it optimal for volume automotive modules where footprint, qualification, and thermal performance are jointly constrained.
Availability
STTH802BY-TR is available at Aetrix Electronics and suitable for engine control units, LED headlamp drivers, on-board charger auxiliary supplies, and start-stop system DC-link clamps requiring stable component supply across automotive production lifecycles.
Supply support for STTH802BY-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.
The STTH series targets high-reliability automotive power conversion, with the STTH802BY-TR specifically engineered for ultrafast, high-temperature freewheeling and protection in 12 V/48 V hybrid vehicle subsystems.
FAQ
Is STTH802BY-TR pin-compatible with STTH802-Y?
Yes - STTH802BY-TR and STTH802-Y share identical DPAK pinout (Anode, Cathode, Exposed Tab), same die, and identical absolute maximum ratings. The "-TR" suffix denotes tape-and-reel packaging (2500 pcs/reel); electrical and thermal performance are fully interchangeable.
What is the minimum recommended copper area for the cathode tab?
ST recommends ≥2 cm² of 35 µm thick copper on the component side, directly soldered to the exposed cathode tab. This achieves the specified 3.2 °C/W Rth(j-c); reducing area below 1.5 cm² increases thermal resistance by ≥40%, risking Tj exceedance at 8 A.
Does STTH802BY-TR support reverse battery protection in 12 V systems?
Yes - with 200 V VRRM and 100 A non-repetitive surge rating (10 ms), it blocks reverse polarity up to ±16 V and withstands jump-start transients. Its 6 µA IR at 25 °C ensures negligible standby drain, critical for always-on automotive modules.
How does trr vary with junction temperature?
trr increases with Tj: from 17 ns at 25 °C to ~25 ns at 125 °C (per Figure 7). This is inherent to carrier lifetime physics; design margins should assume worst-case trr at max operating Tj to ensure EMI and loss targets remain met.
STTH802BY-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 30 ns
- Current - Reverse Leakage @ Vr:
- 6 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
- Operating Temperature - Junction:
- -40°C ~ 175°C
STTH802BY-TR FAQ
1.How can I place an order for STTH802BY-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH802BY-TR 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 STTH802BY-TR reliable?
The price and inventory of STTH802BY-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH802BY-TR is usually 5 days.
3.What payment methods are accepted for STTH802BY-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH802BY-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH802BY-TR?
STTH802BY-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH802BY-TR 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 STTH802BY-TR?
For technical support, including STTH802BY-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH802BY-TR requirements.
6.How does Aetrix verify that STTH802BY-TR is sourced from the original manufacturer or authorized distributors?
All STTH802BY-TR 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 STTH802BY-TR meets industry standards.
7.What is the process for return or replacement of STTH802BY-TR?
All STTH802BY-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH802BY-TR, 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 STTH802BY-TR part is unused and in its original packaging.
Return procedure for STTH802BY-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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