Taiwan Semiconductor Corporation 1N914BWS RRG

Overview

1N914BWS from Taiwan Semiconductor is a high-speed SMD switching diode in SOD-323F package, rated for 150 mA forward current, 100 V repetitive peak reverse voltage, and 4 ns reverse recovery time. It serves as a fast-switching rectifier in DC/DC converters, SMPS, and lighting control circuits where low forward voltage (0.72 V max at 5 mA) and minimal junction capacitance (4 pF) are critical.

For engineers reviewing the 1N914BWS datasheet, 1N914BWS pinout, 1N914BWS application, or 1N914BWS equivalent, key selection criteria include its 100 V V_RRM, 4 ns t_rr, SOD-323F footprint compatibility, RoHS compliance, and J-STD-020 Level 1 moisture sensitivity - all essential for high-density, automated PCB assembly in power conversion designs.

Technical Context

The 1N914BWS employs a single silicon die optimized for high-speed switching with low stored charge. Its 4 ns reverse recovery time (measured at I_F = 10 mA, I_R = 60 mA, R_L = 100 Ω) enables efficient operation in frequencies up to ~100 MHz. The device exhibits 25 nA reverse leakage at 20 V and 5 µA at 75 V, supporting stable blocking in mid-voltage rail conditioning.

Thermally, it features a junction-to-ambient thermal resistance of 625°C/W in standard SOD-323F mounting, limiting continuous power dissipation to 200 mW at 25°C ambient. Its -65°C to +150°C operating junction range supports industrial and automotive under-hood auxiliary circuits when derated per the admissible power curve.

Key Specifications

Pinout & Package

SOD-323F surface-mount package: 2-terminal, cathode-indicated by band, matte tin-plated leads, JEDEC SC-90 compliant, 4.6 mg typical weight, UL 94V-0 molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed switching diode applications.

Compared with 1N4148WS RRG and BAT54CWS_R1_00001, the 1N914BWS offers the lowest forward voltage among 100 V SOD-323F switching diodes, making it optimal for precision biasing and low-power signal routing where both voltage headroom and leakage matter.

Availability

1N914BWS is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, full RoHS compliance, and J-STD-020 Level 1 assembly readiness.

Supply support for 1N914BWS 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.

The 1N914BWS belongs to TSC's high-speed switching diode product line, engineered specifically for compact, high-efficiency power conversion and signal routing in space-constrained SMT designs.

FAQ

What is the maximum reverse voltage rating for the 1N914BWS?

The 1N914BWS has a repetitive peak reverse voltage (V_RRM) rating of 100 V. This means it can reliably block up to 100 V in the reverse-biased direction under normal operating conditions. Exceeding this voltage risks avalanche breakdown or permanent damage. The 1N914BWS is therefore suited for use in 48 V and 60 V power systems where margin above nominal rail voltage is required.

What is the forward voltage of the 1N914BWS at 5 mA?

The forward voltage (V_F) of the 1N914BWS is specified as 0.62 V minimum and 0.72 V maximum at I_F = 5 mA and T_J = 25°C. This low V_F range contributes to reduced conduction losses in low-current bias and signal-path applications. The 1N914BWS achieves this performance while maintaining 100 V blocking capability - a key differentiator versus Schottky alternatives.

Is the 1N914BWS RoHS compliant and halogen-free?

Yes, the 1N914BWS is RoHS compliant and available in a halogen-free "green compound" version (indicated by the "G" suffix in ordering codes like RRG). It conforms to IEC 61249-2-21 for halogen content and meets J-STD-020 Level 1 moisture sensitivity - eliminating bake requirements prior to reflow. These attributes make the 1N914BWS suitable for environmentally regulated end equipment.

What is the reverse recovery time (t_rr) of the 1N914BWS and how is it measured?

The reverse recovery time (t_rr) of the 1N914BWS is 4 ns maximum, tested under standardized conditions: I_F = 10 mA, I_R = 60 mA, R_L = 100 Ω, and I_RR = 1 mA. This measurement reflects the time required for minority carriers to clear the junction after forward conduction ceases. The 4 ns t_rr enables clean switching in high-frequency DC/DC controllers and snubber circuits where slow recovery causes ringing or cross-conduction.

Does the 1N914BWS have a defined polarity marking, and how is it identified?

Yes, the 1N914BWS uses a cathode band to indicate polarity - a single dark stripe near one end of the SOD-323F body. This band identifies the cathode terminal, which must be oriented toward the higher-potential node in forward-bias operation. The marking is optically detectable and fully compatible with automated pick-and-place and AOI systems. Correct orientation is essential for proper circuit function and reliability.