Diodes Incorporated BZX84C12TS-7-F

Overview

BZX84C12TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 12 V (11.4–12.7 V) Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation and 25 Ω maximum Zener impedance at 5 mA test current, used for precision voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the BZX84C12TS-7-F datasheet, BZX84C12TS-7-F pinout, BZX84C12TS-7-F application, or BZX84C12TS-7-F equivalent, key selection criteria include nominal Zener voltage tolerance (±5%), low thermal resistance (625 °C/W), triple-diode isolation, RoHS-compliant matte tin plating, and compatibility with automated SMT assembly on FR4 PCBs.

Technical Context

This device integrates three independent Zener diodes sharing only mechanical packaging-not electrical connection-enabling simultaneous regulation of multiple voltage nodes. Each diode exhibits a well-defined reverse breakdown at 12 V with 5 mA test current, ±5% voltage tolerance, and temperature coefficient of +6.0 to +10.0 mV/°C.

It operates across –65 °C to +150 °C ambient range, supports 0.9 V forward voltage at 10 mA, and maintains stable regulation under pulsed conditions per short-duration test methodology (Note 5). Capacitance is not specified per element but typical total capacitance at 1 V reverse bias is ≤10 pF for 12 V devices.

Key Specifications

Pinout & Package

Package: SOT-363 - ultra-small surface-mount plastic case (2.0–2.2 mm × 1.15–1.35 mm × 0.65 mm height), UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode array applications.

Compared with BZX84C12TS-7-F, MMBZ5242BS-7-F saves cost per diode but eliminates multi-rail integration, while BZX84C12LT1G increases board area by 3× and adds solder joint count - making the triple SOT-363 array optimal for space-constrained, multi-voltage systems.

Availability

BZX84C12TS-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp, and automotive body control module applications requiring stable component supply and long-term lifecycle continuity.

Supply support for BZX84C12TS-7-F 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 centers and manufacturing facilities across Asia and the Americas.

This part belongs to the BZX84C series of triple Zener diode arrays, designed specifically for compact, multi-rail voltage regulation and transient suppression in space-constrained industrial and automotive electronics.

FAQ

What is the maximum reverse voltage this device can withstand before breakdown?

The BZX84C12TS-7-F has a nominal Zener voltage of 12.0 V with a guaranteed range of 11.4 V to 12.7 V at 5 mA test current. Its absolute maximum reverse voltage is defined by its breakdown characteristic - it begins regulating at the lower bound (11.4 V) and remains in controlled conduction up to its power limit (200 mW). Exceeding 12.7 V does not cause immediate failure but increases power dissipation linearly with current.

Can this triple Zener array be used with cathodes tied together for parallel operation?

No - the cathodes (C1, C2, C3) and anodes (A1, A2, A3) are fully isolated within the SOT-363 package. There is no internal connection between any terminals. Tying cathodes externally creates a true parallel configuration only if all three diodes share identical V_Z and temperature coefficients, which is not guaranteed; mismatch may cause current hogging and thermal runaway.

Is this device suitable for use in high-frequency signal clamping applications?

Yes - typical total capacitance is ≤10 pF at 1 V reverse bias (per family data), making it suitable for clamping transients up to ~100 MHz in low-current signal paths. However, its 25 Ω Zener impedance and 625 °C/W thermal resistance limit effectiveness in high-speed, high-energy surge scenarios where TVS diodes with sub-nanosecond response are preferred.

Does the "-7-F" suffix indicate tape-and-reel packaging and RoHS compliance?

Yes - the "-7-F" suffix denotes 3000-unit tape-and-reel packaging per Diodes Incorporated ordering conventions and confirms lead-free, RoHS-compliant construction with matte tin plating. The "F" explicitly indicates green (halogen-free) molding compound per Diodes' policy effective from Date Code UO (week 40, 2007) onward.