Toshiba Semiconductor and Storage CRS11(TE85L,Q,M)

Overview

CRS11(TE85L,Q,M) from TOSHIBA is a Schottky barrier rectifier optimized for low-loss DC/DC conversion in compact power supplies and battery-powered portable equipment. It delivers V_F = 0.36 V (max) at 1.0 A, supports 30 V repetitive peak reverse voltage (V_RRM), and operates across −40°C to +125°C junction temperature with thermal resistance R_th(j-a) = 70°C/W on ceramic board.

For engineers reviewing the CRS11(TE85L,Q,M) datasheet, CRS11(TE85L,Q,M) pinout, CRS11(TE85L,Q,M) application, or CRS11(TE85L,Q,M) equivalent, key selection criteria include forward voltage trade-off vs. reverse leakage, thermal management on small PCB land patterns, and suitability for high-frequency switching topologies where low conduction loss is critical.

Technical Context

The CRS11(TE85L,Q,M) employs a planar Schottky barrier structure enabling fast recovery (no minority carrier storage) and low forward voltage drop. Its VF–IRRM trade-off design prioritizes conduction efficiency over ultra-low leakage, resulting in I_RRM = 1.5 mA (max) at V_RRM = 30 V and T_a = 25°C.

Thermal performance is highly dependent on mounting: R_th(j-a) ranges from 70°C/W (2 mm × 2 mm ceramic board) to 140°C/W (6 mm × 6 mm glass-epoxy board). Junction-to-lead thermal resistance is fixed at 20°C/W, supporting accurate lead-temperature derating per Toshiba's reliability guidelines.

Key Specifications

Pinout & Package

CRS11(TE85L,Q,M) uses Toshiba's S-FLAT™ surface-mount package (JEITA package code 3-2A1A), measuring 2.8 mm × 1.2 mm × 1.2 mm with 2-terminal configuration. The device has no polarity marking on the cathode side per standard diode convention; the anode connects to the exposed metal pad (pin 1), and the cathode connects to the top metallization (pin 2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB050M-40TF and SS12, CRS11(TE85L,Q,M) offers the best balance of low V_F, compact size, and thermal performance for 5–12 V output SMPS in space-constrained portable designs-enabling higher power density without sacrificing efficiency or reliability.

Availability

CRS11(TE85L,Q,M) is available at Aetrix Electronics and suitable for USB PD adapters, wireless charging receivers, Bluetooth headset battery chargers, and industrial IoT sensor nodes requiring stable component supply and long-lifecycle support.

Supply support for CRS11(TE85L,Q,M) 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

Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in power devices, logic ICs, and memory solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The CRS11(TE85L,Q,M) belongs to Toshiba's S-FLAT™ Schottky rectifier product line, engineered specifically for high-efficiency, space-constrained DC/DC conversion in portable and battery-powered electronics.

FAQ

What is the maximum junction temperature rating for CRS11(TE85L,Q,M)?

The absolute maximum junction temperature (T_j) for CRS11(TE85L,Q,M) is +125°C. Operation above this limit risks permanent degradation. Toshiba recommends designing for T_j ≤ 100°C using derated I_F(AV) curves and appropriate board thermal design. The CRS11(TE85L,Q,M) datasheet provides allowable I_F(AV) vs. T_a curves for ceramic and glass-epoxy mounting configurations.

Does CRS11(TE85L,Q,M) have a cathode marking?

No, CRS11(TE85L,Q,M) does not feature a visible cathode marking on its top surface. Polarity is defined by physical construction: the anode is the exposed metal pad (bottom side), and the cathode is the top metallization. Correct orientation must be verified using schematic symbol alignment and PCB silkscreen reference designators-not visual markings-during assembly.

What is the thermal resistance from junction to ambient for CRS11(TE85L,Q,M) on a standard FR-4 board?

When mounted on a 6 mm × 6 mm solder land on a glass-epoxy (FR-4) board, CRS11(TE85L,Q,M) achieves R_th(j-a) = 140°C/W. This value assumes standard JEDEC test conditions; actual performance depends on copper thickness, layer count, and nearby thermal vias. For improved cooling, use ≥2 oz copper and ≥4 thermal vias under the anode pad.

Can CRS11(TE85L,Q,M) be used in automotive applications?

CRS11(TE85L,Q,M) is not qualified to AEC-Q101 and is not recommended for automotive powertrain or safety-critical systems. However, it may be used in non-safety automotive infotainment or body electronics where ambient temperature remains within −40°C to +85°C and reliability requirements align with commercial-grade operation. Always verify compliance with vehicle-specific EMC and lifetime requirements before integration.

How does the VF–IRRM trade-off affect system design with CRS11(TE85L,Q,M)?

The CRS11(TE85L,Q,M) is explicitly designed as a VF–IRRM trade-off type: lower V_F (0.36 V max) comes with higher I_RRM (1.5 mA max at 30 V). This increases reverse-bias power dissipation and thermal stress at elevated temperatures, raising risk of thermal runaway. Designers must calculate total power loss (P_cond + P_rev) and ensure adequate heatsinking or derating-especially in sealed enclosures or high-ambient environments-to maintain safe T_j.