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Diodes Incorporated B170BE-13
- Part No.:
- B170BE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
B170BE-13.pdf
- Description:
- DIODE SCHOTTKY 70V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,359
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Product details
Overview
B170BE-13 from Diodes Incorporated is a 70 V, 1.0 A high-voltage Schottky barrier rectifier in SMB package, featuring 0.79 V max forward voltage at 1.0 A and 0.2 mA max reverse leakage at rated VR and +25°C, optimized for polarity protection and freewheeling in DC-DC converters.
For engineers reviewing the B170BE-13 datasheet, B170BE-13 pinout, B170BE-13 application, or B170BE-13 equivalent, key selection criteria include its low VF for reduced conduction loss, SMB thermal resistance (RθJA = 75°C/W), guard ring die construction for transient robustness, and RoHS-compliant lead-free plating suitable for automated assembly.
Technical Context
This Schottky rectifier operates with zero minority-carrier storage, enabling high-frequency switching performance without reverse recovery time. Its guard ring die structure enhances surge immunity against repetitive transients in inductive load circuits.
Rated for 70 V peak repetitive reverse voltage and 30 A non-repetitive forward surge current (8.3 ms half-sine), it supports operation from –55°C to +150°C with junction-to-case thermal resistance of 40°C/W in SMB package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum allowable repetitive reverse voltage before breakdown; sets safe blocking margin in 48 V DC-DC or AC-DC front-end applications. |
| IO (AV) | 1.0 A - Continuous average forward current rating at +25°C ambient on FR-4 PCB; derates to ~0.6 A at +100°C per Figure 4. |
| VF (max) | 0.79 V @ 1.0 A, +25°C - Low conduction loss enables >92% efficiency in 5–12 V output buck converters at full load. |
| IR (max) | 0.2 mA @ 70 V, +25°C - Minimal leakage preserves battery life in always-on polarity protection circuits. |
| RθJA | 75°C/W - Junction-to-ambient thermal resistance in SMB package on standard 0.4" × 0.5" FR-4 board; enables 1.0 A operation without heatsink below +75°C ambient. |
| CT | 27 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching noise and EMI in high-frequency (>100 kHz) flyback or synchronous rectifier designs. |
Pinout & Package
SMB (Surface Mount Body) package: molded plastic case, UL 94V-0 rated, cathode band marking, matte tin-plated terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node) in freewheeling path; requires low-inductance layout to minimize voltage overshoot. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to higher-potential rail (e.g., input bus or inductor output); must withstand full VRRM during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ruggedness against repetitive voltage transients (e.g., inductive kickback), extending reliability in motor drive or relay driver freewheeling paths. |
| Low VF (0.79 V max) | Reduces power dissipation to ≤0.79 W at 1.0 A, lowering thermal stress and enabling compact PCB layout without forced air cooling. |
| SMB package footprint | Offers 33% higher power density vs. SMA (RθJA 75 vs. 110°C/W), supporting higher current in space-constrained industrial power modules. |
| Lead-free & halogen-free | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb); ensures compliance for export to EU, Japan, and China. |
Applications
| DC-DC Converter Freewheeling Diode | Polarity Protection Circuit |
|---|---|
Use Scenario: Placed across the inductor in non-synchronous buck converters to provide continuous current path during high-side switch off-time. IC Role / Device Role / Timing Role: Uncontrolled rectifier conducting only during discontinuous conduction mode (DCM) or light-load conditions; no timing control required. Use Value: 0.79 V VF minimizes conduction loss, improving light-load efficiency by up to 3.5% versus standard PN diodes in 12 V → 3.3 V designs. |
Use Scenario: Series-connected at DC input to prevent damage from reversed battery or supply connections in portable instrumentation. IC Role / Device Role / Timing Role: Passive blocking element; conducts only when polarity is correct, with no control signal or timing dependency. Use Value: 0.2 mA IR at +25°C limits standby current to <1 µA per 10 kΩ upstream impedance, preserving battery charge over multi-year deployments. |
| AC-DC Output Rectification | Re-Circulating Diode in Relay Drivers |
Use Scenario: Secondary-side rectifier in low-power offline flyback adapters (≤10 W) delivering 5–24 V outputs. IC Role / Device Role / Timing Role: High-frequency rectifier operating at 65–130 kHz switching frequency; leverages zero reverse recovery for clean voltage waveform. Use Value: 27 pF CT reduces high-frequency ringing and EMI emissions, easing EMC filter design and reducing need for snubbers. |
Use Scenario: Connected across relay coil to clamp inductive flyback voltage during de-energization in PLC I/O modules. IC Role / Device Role / Timing Role: Transient suppression device clamping voltage to ~0.8 V above rail; activates within nanoseconds of coil current interruption. Use Value: Guard ring structure sustains ≥30 A surge (8.3 ms) without degradation, ensuring >100,000-cycle relay lifetime under worst-case 24 V/500 mA coil loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM170B-E3/57T (Vishay) | Same SMB package, 70 V VRRM, 1.0 A IO, but VF = 0.82 V max @ 1.0 A (+25°C); RθJA = 80°C/W. | Higher VF increases conduction loss by ~40 mW at 1.0 A; less suitable for thermally constrained 12 V input rails above +60°C ambient. | Select if dual-sourcing required and 0.03 V VF penalty is acceptable for qualification continuity. |
| SS17-E3/57T (Vishay) | SMA package (RθJA = 110°C/W), identical 70 V/1.0 A rating, VF = 0.79 V max, but IR = 0.5 mA @ 70 V (+25°C). | Higher leakage doubles standby current in battery-backed systems; lower thermal capability restricts use to <0.7 A at +70°C ambient. | Prefer only where existing SMA footprint mandates compatibility and thermal budget allows derating. |
Compared with SM170B-E3/57T and SS17-E3/57T, B170BE-13 delivers superior thermal performance (75°C/W) and tighter leakage control (0.2 mA), making it optimal for high-reliability, space-constrained DC-DC and industrial control applications where efficiency and long-term stability are critical.
Availability
B170BE-13 is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, polarity protection circuits, and AC-DC output rectification requiring stable component supply and RoHS-compliant manufacturing.
Supply support for B170BE-13 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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
B170BE-13 belongs to Diodes' high-voltage Schottky rectifier product line, engineered for efficiency-critical power conversion in industrial, computing, and consumer power supplies where low VF and robust surge handling are essential.
FAQ
Is B170BE-13 suitable for automotive applications?
No - B170BE-13 is not AEC-Q101 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. It is rated for industrial temperature range (–55°C to +150°C), but Diodes Incorporated explicitly excludes automotive use without written approval per their Life Support Notice.
What is the maximum PCB pad temperature during reflow soldering?
The SMB package supports lead-free reflow per J-STD-020, with peak temperature of 260°C for ≤30 seconds. Diodes specifies that solder profile must limit time above 220°C to <90 seconds and avoid exceeding 260°C at any point to preserve die attach integrity and plating adhesion.
Does B170BE-13 have a specified reverse recovery time (trr)?
No - as a Schottky barrier rectifier, B170BE-13 has no minority carrier storage; its reverse recovery is effectively instantaneous (<1 ns). The datasheet omits trr because it is not a measurable parameter - this eliminates switching losses and EMI associated with PN diode recovery tails.
Can B170BE-13 replace B170AE-13 in the same design?
Yes - electrically identical except for package: B170AE-13 uses SMA (RθJA = 110°C/W), while B170BE-13 uses SMB (RθJA = 75°C/W). Layout must be updated for SMB footprint (larger body, different pad dimensions), but no circuit changes are needed for equivalent electrical performance.
B170BE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 70 V
- Capacitance @ Vr, F:
- 27pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 150°C
B170BE-13 FAQ
1.How can I place an order for B170BE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B170BE-13 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 B170BE-13 reliable?
The price and inventory of B170BE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B170BE-13 is usually 5 days.
3.What payment methods are accepted for B170BE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B170BE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B170BE-13?
B170BE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B170BE-13 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 B170BE-13?
For technical support, including B170BE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B170BE-13 requirements.
6.How does Aetrix verify that B170BE-13 is sourced from the original manufacturer or authorized distributors?
All B170BE-13 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 B170BE-13 meets industry standards.
7.What is the process for return or replacement of B170BE-13?
All B170BE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B170BE-13, 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 B170BE-13 part is unused and in its original packaging.
Return procedure for B170BE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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