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Diodes Incorporated PDS835L-7
- Part No.:
- PDS835L-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 5
- Datasheet:
-
PDS835L-7.pdf
- Description:
- DIODE SCHOTTKY 35V 8A POWERDI5
- Quantity:
- Payment:
- Shipping:
Inventory:8,785
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Product details
Overview
PDS835L-7 from Diodes Incorporated is an 8A, 35V low-forward-voltage Schottky barrier rectifier in POWERDI5 package, featuring 0.41V VF at 8A/125°C and 120A non-repetitive surge capability; used for polarity protection and freewheeling in DC-DC converters and automotive body control modules.
For engineers reviewing the PDS835L-7 datasheet, PDS835L-7 pinout, PDS835L-7 application, or PDS835L-7 equivalent, key selection criteria include thermal resistance (RθJA = 45°C/W with optimized pad layout), AEC-Q101 qualification, and low VF performance under high-temperature operation.
Technical Context
This Schottky rectifier employs guard ring die construction to enhance transient robustness and suppress leakage under reverse bias. Its low VF enables high-efficiency power conversion in 3.3V–12V input systems where conduction loss dominates thermal design.
Thermal performance is highly dependent on PCB layout: RθJA drops from 100°C/W (FR-4) to 45°C/W with specified cathode/anode copper pad dimensions on polyimide board, enabling sustained 8A operation at +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum repetitive reverse voltage; defines safe blocking range in 24V automotive or 12V industrial rails. |
| IF(AV) | 8 A - Continuous average forward current; supports high-current USB-C PD or motor driver freewheeling paths. |
| VF @ 8A/125°C | 0.41 V - Confirmed forward voltage at full load and elevated junction temperature; reduces conduction loss by ~30% vs. standard Schottkys. |
| IFSM | 120 A - Non-repetitive peak surge rating; withstands inrush during hot-swap or load dump events. |
| RθJA (Optimized) | 45 °C/W - Thermal resistance with 18.8mm × 14.4mm cathode pad; enables 8A operation at +85°C ambient without heatsink. |
| IR @ 35V/100°C | 1.4 mA - Reverse leakage at max rated voltage and elevated temperature; ensures low standby power in always-on circuits. |
Pinout & Package
Package: POWERDI5 - surface-mount, thermally enhanced plastic package with exposed cathode pad; UL 94V-0 rated, lead-free, halogen-free, and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Left Pin | Anode | Primary current entry point; requires 2.7mm × 1.6mm copper pad for optimal thermal transfer per datasheet AP02001. |
| Right Pin | Cathode | Current return path and thermal interface; must be connected to large copper area (9.4mm × 7.2mm min) for RθJA = 65°C/W. |
| Bottom-side Exposed Pad | Cathode / Heat Sink | Electrically and thermally tied to cathode; mandatory for achieving published RθJA ratings and 8A continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity without external TVS, reducing BOM count in automotive load switches. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and lighting drivers. |
| 0.41V VF at 8A/125°C | Enables >95% efficiency in 5V-to-3.3V synchronous buck stages when used as synchronous rectifier replacement. |
| Lead-free, halogen-free "Green" construction | Complies with EU RoHS 2 and JIS C0950; eliminates brominated flame retardants and antimony trioxide. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Adapter |
|---|---|
Use Scenario: Reverse polarity protection on 12V battery input rail of door module ECUs. IC Role / Device Role / Timing Role: Unidirectional blocking diode preventing damage from incorrect battery connection. Use Value: 0.41V VF minimizes voltage drop and heat generation during continuous 5A load, extending module lifetime. | Use Scenario: Secondary-side synchronous rectification in 65W GaN-based USB-C PD charger. IC Role / Device Role / Timing Role: Low-loss freewheeling path replacing MOSFET gate drive complexity. Use Value: 120A IFSM handles output capacitor inrush without derating; 45°C/W RθJA sustains full output at 40°C ambient. |
| Industrial PLC I/O Terminal | DC Motor Driver Freewheeling |
Use Scenario: Input protection for 24V digital input channels subject to field wiring reversals. IC Role / Device Role / Timing Role: Polarity guard ensuring correct logic level interpretation despite miswiring. Use Value: AEC-Q101 reliability and <1.4mA IR at 100°C prevent false triggering in high-temperature enclosures. | Use Scenario: Flyback path for brushed DC motor H-bridge during PWM off-time. IC Role / Device Role / Timing Role: Fast recovery freewheeling diode minimizing voltage spikes and EMI. Use Value: 35V VRRM safely clamps back-EMF up to 30V; low VF reduces power dissipation during 8A stall current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB830-E3/52 | 30V VRRM, 0.52V VF @ 8A/25°C, TO-277 package | Lacks AEC-Q101 qualification; higher VF increases conduction loss at elevated temperature | Acceptable for cost-sensitive industrial supplies where automotive qualification is not required. |
| SS8P3L | 30V VRRM, 0.45V VF @ 8A/125°C, POWERDI5 package, AEC-Q101 qualified | Lower voltage rating limits use to ≤24V systems; identical thermal footprint and mounting | Drop-in replacement only if system reverse voltage stays below 30V; same layout and reflow profile. |
Compared with SB830-E3/52 and SS8P3L, PDS835L-7 uniquely combines 35V blocking, AEC-Q101 compliance, and sub-0.42V VF at 125°C-enabling robust 24V automotive and industrial designs without thermal derating.
Availability
PDS835L-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery adapters, and industrial PLC I/O terminals requiring stable component supply and long-term lifecycle support.
Supply support for PDS835L-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The PDS835L belongs to Diodes' POWERDI Schottky rectifier product line, engineered for high-current, low-VF operation in space-constrained automotive and industrial power conversion applications.
FAQ
What is the maximum continuous operating temperature for PDS835L-7?
The PDS835L-7 has a junction temperature range of –65°C to +125°C. With RθJA = 45°C/W and 8A load, maximum ambient temperature is +85°C using the recommended 18.8mm × 14.4mm cathode pad. Derating curves in Figure 6 confirm 8A operation up to +85°C ambient under specified layout conditions.
Is PDS835L-7 pin-compatible with other POWERDI5 Schottky rectifiers?
Yes-PDS835L-7 uses the standard POWERDI5 footprint defined in AP02002. All Diodes POWERDI5 Schottky rectifiers share identical mechanical dimensions and pad layout requirements, enabling direct PCB-level substitution among devices like PDS340, SB830, and SS8P3L when voltage/current ratings align.
Does PDS835L-7 require a heatsink for 8A operation?
No external heatsink is required. With the specified 18.8mm × 14.4mm cathode copper pad on polyimide PCB, RθJA = 45°C/W allows full 8A current at +85°C ambient. On FR-4 with minimum pad, RθJA rises to 100°C/W, limiting continuous current to ~4.5A at +85°C ambient.
How does the guard ring construction improve reliability?
The guard ring die structure mitigates edge breakdown under high dv/dt or ESD stress, reducing failure probability during load dump transients or electrostatic discharge events. This is validated per AEC-Q101 stress tests and enables reliable operation in automotive environments without additional transient suppression components.
PDS835L-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 35 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 510 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.4 mA @ 35 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 5
- Operating Temperature - Junction:
- -65°C ~ 125°C
PDS835L-7 FAQ
1.How can I place an order for PDS835L-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDS835L-7 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 PDS835L-7 reliable?
The price and inventory of PDS835L-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDS835L-7 is usually 5 days.
3.What payment methods are accepted for PDS835L-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDS835L-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDS835L-7?
PDS835L-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDS835L-7 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 PDS835L-7?
For technical support, including PDS835L-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDS835L-7 requirements.
6.How does Aetrix verify that PDS835L-7 is sourced from the original manufacturer or authorized distributors?
All PDS835L-7 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 PDS835L-7 meets industry standards.
7.What is the process for return or replacement of PDS835L-7?
All PDS835L-7 units undergo pre-shipment inspection (PSI). If there is an issue with PDS835L-7, 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 PDS835L-7 part is unused and in its original packaging.
Return procedure for PDS835L-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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