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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated B170AE-13

Name: B170AE-13
Brand: Diodes Incorporated
SKU: B170AE-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: B170AE-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: B170AE-13.pdf

Description:: DIODE SCHOTTKY 70V 1A SMA

Quantity:: RFQ Add To RFQ list

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Inventory:3,900

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Product details

Overview

B170AE-13 from Diodes Incorporated is a 70 V, 1.0 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.79 V max forward voltage at 1.0 A and 0.2 mA max reverse leakage at 25°C, optimized for polarity protection and DC-DC converter freewheeling paths in compact power supplies.

For engineers reviewing the B170AE-13 datasheet, B170AE-13 pinout, B170AE-13 application, or B170AE-13 equivalent, this device is selected for low-loss, high-frequency rectification where thermal resistance (R_θJA = 110°C/W) and RoHS-compliant lead-free plating are critical to board-level reliability and automated assembly yield.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced junction breakdown, enabling robust operation under repetitive surge conditions (I_FSM = 30 A, 8.3 ms half-sine). Its low forward voltage drop directly reduces conduction loss in high-efficiency 12 V–48 V input DC-DC stages.

The device exhibits 27 pF typical junction capacitance at 4 V reverse bias and 1 MHz, supporting fast switching in flyback snubbers and synchronous rectifier auxiliary paths. Thermal performance is defined for FR-4 PCB mounting with 0.2" × 0.25" copper pad per JEDEC standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	70 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in 48 V bus blocking applications.
I_O	1.0 A - Average rectified current rating at +25°C ambient; derated to ~0.6 A at +100°C per Figure 4.
V_F Max	0.79 V @ 1.0 A, +25°C - Low conduction loss enables >92% efficiency in 5 V output buck converters.
I_R Max	0.2 mA @ 70 V, +25°C - Minimal leakage preserves battery runtime in always-on polarity protection circuits.
R_θJA	110 °C/W - Junction-to-ambient thermal resistance on standard FR-4; dictates minimum copper area needed for thermal management.
C_T	27 pF @ 4 V, 1 MHz - Low junction capacitance minimizes switching loss and EMI in >100 kHz DC-DC topologies.

Pinout & Package

Package: SMA (DO-214AC), molded plastic case with matte tin-plated terminals, cathode band marking, UL 94V-0 rated, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential side (e.g., ground or switch node) in freewheeling path.
Cathode	Current exit point during forward conduction; marked with band	Connected to higher-potential rail (e.g., input bus) for polarity protection or output rectification.

Key Features

Feature	Design Value
Guard ring die construction	Suppresses edge breakdown under voltage transients, extending surge survivability beyond IEC 61000-4-5 Level 3.
Low V_F / high I_O ratio	Enables 1.0 A continuous current handling with <0.8 V drop-critical for thermally constrained IoT power modules.
Lead-free, halogen-free "Green" finish	Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 moisture sensitivity Level 1 for reflow compatibility.
SMA package footprint	0.4" × 0.5" PCB area requirement supports high-density layout in space-constrained AC-DC adapters.

Applications

Polarity Protection

DC-DC Freewheeling

Use Scenario: Reverse-voltage protection on 12 V input rail of industrial sensor node powered by external supply.

IC Role / Device Role / Timing Role: Blocking diode placed between connector and LDO input to prevent damage from miswired power cables.

Use Value: 0.2 mA leakage ensures <2.4 µW standby loss; 70 V rating covers 12 V ±10% with margin for load dump spikes.

Use Scenario: Freewheeling path in 300 kHz synchronous buck converter delivering 3.3 V @ 800 mA to microcontroller.

IC Role / Device Role / Timing Role: Schottky rectifier conducting during low-side FET off-time to maintain inductor current continuity.

Use Value: 0.79 V V_F limits conduction loss to 632 mW peak, reducing thermal stress vs. silicon diode alternatives.

AC-DC Output Rectification

Re-Circulating Diode

Use Scenario: Secondary-side rectification in isolated 5 V/2 A flyback adapter for USB-C PD accessories.

IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC, operating at 65–100 kHz.

Use Value: 27 pF C_T minimizes switching loss and EMI generation during turn-off, easing EMC filter design.

Use Scenario: Inductive load suppression across solenoid driver in automotive body control module.

IC Role / Device Role / Timing Role: Clamp diode providing low-impedance path for stored inductor energy during MOSFET turn-off.

Use Value: 30 A I_FSM withstands repeated 20 ms coil de-energization surges without degradation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS14 (SMA)	70 V V_RRM, 1.0 A I_O, 0.5 V typ V_F at 1 A - lower typical forward voltage but higher leakage (0.5 mA @ 70 V).	Better efficiency at light loads; less suitable for battery-critical leakage-sensitive designs.	Prefer SS14 when minimizing no-load power loss is primary; retain B170AE-13 when leakage budget is tight.
B170AF-13	Same electrical specs but SMB package - 75°C/W R_θJA vs. 110°C/W, 0.093 g weight vs. 0.063 g.	Higher thermal performance and mechanical robustness; requires larger PCB footprint.	Choose B170AF-13 for higher ambient temperature environments (>85°C) or mechanically stressed layouts.

Compared with SS14 and B170AF-13, B170AE-13 offers the best balance of ultra-low leakage, standardized SMA footprint, and cost-effective manufacturability for mid-volume consumer power supplies.

Availability

B170AE-13 is available at Aetrix Electronics and suitable for polarity protection, DC-DC freewheeling, and AC-DC output rectification requiring stable component supply across industrial, automotive, and consumer electronics programs.

Supply support for B170AE-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, specializing in high-reliability power management and signal integrity solutions for industrial and automotive markets.

The B170AE-13 belongs to Diodes' high-voltage Schottky rectifier product line, engineered for low-loss, high-frequency operation in compact power conversion systems where thermal and leakage constraints dominate design trade-offs.

FAQ

What is the maximum junction temperature for continuous operation of B170AE-13?

The B170AE-13 has an operating junction temperature range of –55°C to +150°C. For reliable long-term operation, junction temperature must remain ≤150°C under worst-case ambient and power dissipation conditions. Derating curves in Figure 4 show usable I_O drops to ~0.6 A at +100°C ambient on standard FR-4.

Is B170AE-13 suitable for use in automotive infotainment power supplies?

Yes - B170AE-13 meets AEC-Q200 stress test requirements for passive components when qualified per Diodes' automotive-grade variants (e.g., B170AEQ-13). Standard B170AE-13 is widely used in non-safety-critical infotainment DC-DC stages where its 70 V rating and 0.2 mA leakage support 12 V system robustness.

How does the SMA package of B170AE-13 compare thermally to SMB alternatives?

B170AE-13 in SMA has R_θJA = 110°C/W versus 75°C/W for SMB-packaged B170BE-13. This means the SMA version heats up ~47% more for the same power dissipation. Layout with ≥0.2" × 0.25" copper pad is essential to meet thermal targets in sustained 1 A operation.

Can B170AE-13 replace a 1N5819 in existing designs?

Yes - B170AE-13 is a direct surface-mount replacement for through-hole 1N5819 (same 70 V/1 A rating), offering identical electrical behavior with improved thermal performance on modern PCBs. The SMA footprint requires pad redesign, but eliminates manual insertion and improves reflow yield.

B170AE-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-214AC, SMA

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:: SMA

Operating Temperature - Junction:: -55°C ~ 150°C

B170AE-13 FAQ

1.How can I place an order for B170AE-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for B170AE-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 B170AE-13 reliable?

The price and inventory of B170AE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B170AE-13 is usually 5 days.

3.What payment methods are accepted for B170AE-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B170AE-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for B170AE-13?

B170AE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your B170AE-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 B170AE-13?

For technical support, including B170AE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B170AE-13 requirements.

6.How does Aetrix verify that B170AE-13 is sourced from the original manufacturer or authorized distributors?

All B170AE-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 B170AE-13 meets industry standards.

7.What is the process for return or replacement of B170AE-13?

All B170AE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B170AE-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 B170AE-13 part is unused and in its original packaging.

Return procedure for B170AE-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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