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

STMicroelectronics TMMBAT41FILM

Name: TMMBAT41FILM
Brand: STMicroelectronics
SKU: TMMBAT41FILM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TMMBAT41FILM

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-213AA (Glass)

Datasheet:: TMMBAT41FILM.pdf

Description:: DIODE SCHOT 100V 100MA MINI MELF

Quantity:: RFQ Add To RFQ list

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Inventory:7,317

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Product details

Overview

TMMBAT41FILM from STMicroelectronics is a small-signal Schottky diode in MINIMELF glass package, featuring 100 V repetitive peak reverse voltage, 100 mA forward continuous current at 25 °C, and 0.45 V typical forward voltage at 200 mA - optimized for low-loss signal rectification and ESD-protected signal routing in portable power management circuits.

For engineers reviewing the TMMBAT41FILM datasheet, TMMBAT41FILM pinout, TMMBAT41FILM application, or TMMBAT41FILM equivalent, key selection criteria include its 0.4 V–0.45 V forward voltage range, 2 pF junction capacitance at 1 V reverse bias, integrated ESD protection, thermal resistance of 300 °C/W, and operation across –65 °C to +125 °C junction temperature.

Technical Context

This Schottky diode uses a metal-to-silicon junction to achieve low forward voltage drop and fast switching speed, with no minority-carrier storage delay. Its 2 pF junction capacitance at 1 V reverse bias and 750 mA non-repetitive surge rating support high-frequency signal clamping and transient suppression.

The device integrates on-chip ESD protection rated per IEC 61000-4-2 (Level 4), enabling direct interface with exposed I/O lines. Absolute maximum junction temperature is +125 °C under continuous operation, with storage extended to +150 °C for assembly handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - supports reverse blocking in 3.3 V to 48 V signal/power rail applications without breakdown
I_F	100 mA continuous - suitable for low-current biasing, level shifting, and logic signal steering
V_F	0.45 V @ 200 mA - minimizes conduction loss in battery-powered sensor nodes and USB port protection
C_j	2 pF @ 1 V - enables RF signal path isolation up to ~1 GHz without significant capacitive loading
R_th(j-l)	300 °C/W - limits junction temperature rise to ≤30 °C under 100 mW dissipation at lead temperature of 95 °C
T_j Range	–65 °C to +125 °C - qualified for automotive cabin electronics and industrial control ambient environments

Pinout & Package

MINIMELF (glass) surface-mount package with axial leads; cathode identified by black ring marking. Dimensions: 3.4 mm length × 1.6 mm diameter × 0.45 mm lead pitch; weight 0.05 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to higher-potential node during conduction; low-resistance metal-silicon interface enables fast turn-on
Cathode	Forward current exit / ESD clamp return	Marked with black ring; ties to system ground or protected reference plane for ESD current shunting

Key Features

Feature	Design Value
Low forward voltage	0.45 V @ 200 mA - reduces power loss in always-on bias networks and improves efficiency in low-voltage LDO pre-biasing
ESD protection	Integrated per IEC 61000-4-2 Level 4 - eliminates need for external TVS in USB 2.0 data line and GPIO protection
Fast switching	No minority carrier storage - enables clean edge transition in 10–100 MHz clock signal steering and RF detector applications
Small junction capacitance	2 pF @ 1 V - preserves signal integrity in high-speed analog front-ends and antenna switch control paths

Applications

USB Data Line Protection

Low-Voltage Bias Network

Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals against contact ESD events during hot-plug insertion.

IC Role / Device Role / Timing Role: Bidirectional ESD clamp and DC blocking diode in series with data path.

Use Value: 0.45 V forward drop avoids signal degradation; 2 pF capacitance prevents bit error rate increase at 480 Mbps.

Use Scenario: Providing stable bias current to op-amp input stages or reference dividers in battery-operated IoT sensors.

IC Role / Device Role / Timing Role: Low-drop rectifier and polarity guard in precision analog supply rails.

Use Value: 100 mA rating supports multi-channel sensor bias; –65 °C to +125 °C range ensures calibration stability across field conditions.

RF Signal Detector

Power Rail OR-ing

Use Scenario: Demodulating low-amplitude RF envelope signals in sub-GHz ISM band receivers.

IC Role / Device Role / Timing Role: Zero-bias detector diode in passive envelope detection circuit.

Use Value: 2 pF capacitance and <1 ns recovery time enable accurate detection of 315 MHz/433 MHz carrier envelopes.

Use Scenario: Implementing diode-OR redundancy between two 3.3 V backup supplies in industrial PLC modules.

IC Role / Device Role / Timing Role: Low-loss forward path selector with automatic reverse isolation.

Use Value: 0.45 V drop minimizes voltage offset between sources; 750 mA surge rating handles inrush during source switchover.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAT41W-7-F (Diodes Inc.)	Same MINIMELF package, 100 V V_RRM, but 0.5 V V_F @ 200 mA and 4 pF C_j	Higher capacitance limits use above 500 MHz; slightly higher conduction loss affects battery runtime	Preferred where cost sensitivity outweighs RF performance or ultra-low V_F
NSR0130P2T5G (ON Semi)	SOD-523 package, 30 V V_RRM, 0.35 V V_F @ 100 mA, 1.5 pF C_j	Lower voltage rating excludes use in 24 V auxiliary rails; smaller footprint suits space-constrained wearables	Select when board area is critical and reverse voltage stays below 30 V

Compared with BAT41W-7-F and NSR0130P2T5G, TMMBAT41FILM uniquely balances 100 V capability, 0.45 V forward drop, and 2 pF capacitance in a robust glass package - making it optimal for mixed-signal interfaces requiring both ESD resilience and RF-friendly switching.

Availability

TMMBAT41FILM is available at Aetrix Electronics and suitable for USB interface protection, low-voltage bias networks, RF envelope detection, and power rail OR-ing requiring stable component supply across automotive, industrial, and consumer design cycles.

Supply support for TMMBAT41FILM 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

TMMBAT41FILM belongs to ST's legacy small-signal Schottky diode family, engineered specifically for ESD-hardened signal routing and low-loss rectification in space- and power-constrained portable electronics.

FAQ

Is TMMBAT41FILM suitable for automotive under-hood applications?

No - while its junction temperature rating extends to +125 °C, the MINIMELF glass package lacks AEC-Q101 qualification and is not rated for under-hood vibration or thermal cycling stress. It is approved for cabin and infotainment subsystems only.

What is the maximum soldering temperature and duration allowed for TMMBAT41FILM?

The absolute maximum soldering temperature is 260 °C for 15 seconds, per the manufacturer's mechanical data sheet. Exceeding this risks glass-to-metal seal fracture and irreversible leakage current increase above 20 µA at 100 °C.

Does TMMBAT41FILM have a specified reverse recovery time (t_rr)?

No - as a Schottky diode, it exhibits no minority-carrier storage and therefore has no defined reverse recovery time. Its switching is limited only by junction capacitance discharge, enabling effective operation beyond 100 MHz in clamping and detection roles.

Can TMMBAT41FILM replace BAT54 series diodes in existing designs?

Only with layout review: TMMBAT41FILM uses MINIMELF (glass) while BAT54 uses SOT-23. Pin compatibility is absent, and its 100 V rating exceeds BAT54's 30 V - potentially over-specifying in low-voltage logic clamping but improving surge margin in 24 V industrial I/O.

TMMBAT41FILM Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-213AA (Glass)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 100mA

Voltage - Forward (Vf) (Max) @ If:: 450 mV @ 1 mA

Speed:: Small Signal =< 200mA (Io), Any Speed

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 nA @ 50 V

Capacitance @ Vr, F:: 2pF @ 1V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Mini MELF

Operating Temperature - Junction:: -65°C ~ 125°C

TMMBAT41FILM FAQ

1.How can I place an order for TMMBAT41FILM through Aetrix?

Please submit a Request for Quotation (RFQ) for TMMBAT41FILM 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 TMMBAT41FILM reliable?

The price and inventory of TMMBAT41FILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMMBAT41FILM is usually 5 days.

3.What payment methods are accepted for TMMBAT41FILM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMMBAT41FILM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TMMBAT41FILM?

TMMBAT41FILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TMMBAT41FILM 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 TMMBAT41FILM?

For technical support, including TMMBAT41FILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMMBAT41FILM requirements.

6.How does Aetrix verify that TMMBAT41FILM is sourced from the original manufacturer or authorized distributors?

All TMMBAT41FILM 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 TMMBAT41FILM meets industry standards.

7.What is the process for return or replacement of TMMBAT41FILM?

All TMMBAT41FILM units undergo pre-shipment inspection (PSI). If there is an issue with TMMBAT41FILM, 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 TMMBAT41FILM part is unused and in its original packaging.

Return procedure for TMMBAT41FILM:

1.Submit a request within 90 days.

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

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