Infineon Technologies BAT1704E6327HTSA1

Overview

BAT1704E6327HTSA1 from Infineon Technologies is a silicon Schottky diode configured as a common-cathode dual diode in SOT-143 package, rated for 4 V reverse voltage, 130 mA forward current, and optimized for VHF/UHF mixer applications with 0.55 pF typical capacitance at 0 V and 1 MHz. It meets AEC-Q101 qualification for automotive use.

For engineers reviewing the BAT1704E6327HTSA1 datasheet, BAT1704E6327HTSA1 pinout, BAT1704E6327HTSA1 application, or BAT1704E6327HTSA1 equivalent, key selection criteria include low junction-to-soldering-point thermal resistance (≤590 K/W), tight forward-voltage matching (≤20 mV at 1 mA), and ESD-sensitive handling requirements.

Technical Context

This dual common-cathode Schottky diode supports balanced mixer topologies by providing matched conduction paths with symmetrical parasitic capacitance and low differential forward resistance (8–15 Ω at 5 mA/10 kHz). Its 1.4 nH series inductance and 0.55 pF zero-bias capacitance enable stable RF performance up to UHF frequencies.

The device operates across –55 °C to +125 °C ambient, with junction temperature limited to 150 °C and power dissipation derated above case temperatures of 61 °C. Thermal resistance to soldering point is specified at ≤590 K/W, supporting compact RF layout with controlled thermal path design.

Key Specifications

Pinout & Package

SOT-143 package: 4-pin surface-mount plastic package with gull-wing leads, 1.3 mm × 2.4 mm footprint, 0.95 mm height, and pin 1 marked by chamfered corner. Designed for high-frequency RF layout with minimized lead inductance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual common-cathode Schottky mixer diode applications.

Compared with BAR63-03W and SKY13370-374LF, BAT1704E6327HTSA1 uniquely delivers factory-matched dual Schottky elements in one SOT-143 package, eliminating external balancing components and preserving passive mixer simplicity while meeting automotive thermal and reliability requirements.

Availability

BAT1704E6327HTSA1 is available at Aetrix Electronics and suitable for VHF/UHF radio front-ends, automotive TPMS receivers, and industrial wireless sensor nodes requiring stable component supply with AEC-Q101 compliance and RoHS-conforming packaging.

Supply support for BAT1704E6327HTSA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

BAT1704E6327HTSA1 belongs to Infineon's high-frequency discrete diode product line, engineered specifically for RF mixer and detector applications in automotive, industrial, and consumer wireless systems where low capacitance, matched characteristics, and thermal robustness are essential.

FAQ

What is the maximum operating frequency for BAT1704E6327HTSA1 in mixer applications?

The device is characterized for VHF/UHF operation up to 1 GHz, with diode capacitance (0.55 pF typ.) and differential resistance (8–15 Ω) enabling effective mixing through 900 MHz. Performance beyond 1 GHz depends on PCB layout parasitics and bias conditions, but no official specification extends beyond UHF range.

Is BAT1704E6327HTSA1 pin-compatible with BAT17-04 or BAT17-07?

No - BAT1704E6327HTSA1 uses SOT-143 (4-pin), while BAT17-04 and BAT17-07 use SOT-23 (3-pin) and SOT-23 (3-pin) respectively. Pin count, pinout, and internal configuration (common cathode vs. single diode) differ; direct substitution is not possible without board redesign.

Does BAT1704E6327HTSA1 require external biasing in mixer circuits?

No external DC bias is required for basic passive mixer operation. The diode conducts under RF signal swing alone. However, a small forward bias (e.g., 0.1–0.3 V) may be applied to adjust conversion loss or improve linearity - this must remain below 4 V reverse rating and respect 130 mA IF limit.

How does the SOT-143 package affect thermal performance compared to SOT-23 variants?

SOT-143 provides lower thermal resistance (≤590 K/W) than SOT-23 versions (≤490–690 K/W depending on variant) due to its larger thermal pad area and four-pin construction. This allows higher sustained RF power handling before junction temperature exceeds 150 °C, especially in dense RF layouts with limited copper area.