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Diodes Incorporated BZX84C39TS-7-F
- Part No.:
- BZX84C39TS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C39TS-7-F.pdf
- Description:
- DIODE ZENER ARRAY 39V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:5,107
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Product details
Overview
BZX84C39TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 39 V ±5% Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation, 130 Ω max Zener impedance at 2 mA, and operating from –65 °C to +150 °C; used for precision voltage clamping and overvoltage protection in compact DC power rails.
For engineers reviewing the BZX84C39TS-7-F datasheet, BZX84C39TS-7-F pinout, BZX84C39TS-7-F application, or BZX84C39TS-7-F equivalent, key selection factors include nominal Zener voltage (39.0 V), tolerance (±5%), Zener test current (2 mA), max reverse leakage (0.1 µA @ 27.3 V), and thermal resistance (625 °C/W).
Technical Context
This device integrates three independent Zener diodes in one ultra-small SOT-363 package, each with identical 39 V nominal breakdown voltage and matched temperature coefficient (–3.5 to +0.2 mV/°C). All elements share common thermal coupling but electrically isolate cathode-anode paths.
It operates under pulsed Zener test conditions (short duration to minimize self-heating) and exhibits typical capacitance of ~10 pF at 1 V reverse bias. The 200 mW power rating applies only when mounted on FR4 with specified pad layout per AP02001.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 39.0 V - precise clamping threshold at 2 mA test current |
| Zener Voltage Range | 37.0–41.0 V - guaranteed tolerance band for production yield control |
| Zener Impedance | 130 Ω max @ 2 mA - limits regulation error under dynamic load transients |
| Power Dissipation | 200 mW - maximum steady-state thermal limit on FR4 board with recommended layout |
| Reverse Leakage | 0.1 µA @ 27.3 V - ensures minimal quiescent current in standby protection circuits |
| Thermal Resistance | 625 °C/W - defines junction-to-ambient temperature rise per watt dissipated |
| Operating Temp | –65 to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
SOT-363 (SC-70-6) ultra-small surface-mount plastic package with six terminals: three anode-cathode pairs (A1/C1, A2/C2, A3/C3), no internal connection between elements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Current entry point for first Zener element; connects to protected node ground or low-side reference |
| C1 | Cathode of Diode 1 | Clamped output node; ties to 39 V rail or signal line requiring overvoltage limiting |
| A2 | Anode of Diode 2 | Independent anode for second Zener; enables dual-rail clamping without shared path |
| C2 | Cathode of Diode 2 | Second clamping output; allows simultaneous protection of two separate 39 V domains |
| A3 | Anode of Diode 3 | Third isolated anode; supports triple-redundant or multi-channel clamp architecture |
| C3 | Cathode of Diode 3 | Third clamping output; maintains electrical isolation up to 150 °C ambient |
Key Features
| Feature | Design Value |
|---|---|
| Triple isolated Zener elements | Enables three independent 39 V clamping functions in one footprint-reduces PCB area by >60% vs. discrete SOD-323 devices |
| Lead-free / RoHS-compliant | Meets global environmental compliance without sacrificing solderability or thermal cycling reliability |
| Low reverse leakage | 0.1 µA @ 27.3 V ensures <1 nW standby power loss in battery-backed systems |
| Stable tempco | –3.5 to +0.2 mV/°C minimizes drift-induced error in precision reference applications |
| Ultra-small SOT-363 | 2.2 mm × 1.35 mm × 0.9 mm profile fits high-density layouts where space is constrained to <3 mm² per clamp |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protecting analog front-end inputs of 39 V-supplied pressure/temperature sensors from ESD and load dump spikes. IC Role / Device Role / Timing Role: Voltage clamp placed between sensor output and ADC input, shunting transient energy before it reaches sensitive circuitry. Use Value: Prevents ADC saturation and latch-up during 1 kV ESD events while maintaining <0.5% full-scale error across –40 to +125 °C. | Use Scenario: Clamping 39 V auxiliary supply lines feeding microcontrollers and CAN transceivers in BCM modules. IC Role / Device Role / Timing Role: Overvoltage protector on switched 39 V rail during alternator load dump (ISO 7637-2 Pulse 5a). Use Value: Limits rail excursion to ≤41.0 V for <100 ms, preserving MCU reset integrity and avoiding brown-out resets. |
| Telecom Line Card Protection | Medical Infusion Pump Power Monitoring |
Use Scenario: Safeguarding 39 V DC-DC converter outputs feeding PoE-powered PHY interfaces on line cards. IC Role / Device Role / Timing Role: Secondary clamp after TVS, providing tighter regulation (±5%) than standard TVS alone. Use Value: Reduces post-transient overshoot from ±15% to ±5%, preventing PHY IC damage during repeated surge events. | Use Scenario: Monitoring 39 V battery backup rail in infusion pumps to detect undervoltage and initiate safe shutdown. IC Role / Device Role / Timing Role: Precision Zener reference for comparator-based voltage monitor circuit. Use Value: Enables detection of 37.0 V dropout with ±0.1 V hysteresis, meeting IEC 60601-1 fault response timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5270BS-7-F | Single-element 39 V Zener in SOT-363; same Zener voltage but no triple-array configuration | Requires three separate placements for equivalent functionality; increases layout area and assembly cost | Select when only one 39 V clamp is needed or board real estate permits discrete placement |
| BZX84C39LT1G | Same 39 V triple array but in SOT-23-6 package; larger footprint (3.0 × 1.4 mm) and higher RθJA (750 °C/W) | Lower power density handling; unsuitable for high-ambient or thermally constrained designs | Select only if legacy SOT-23-6 tooling exists and thermal margin exceeds 100 °C/W |
Compared with MMBZ5270BS-7-F and BZX84C39LT1G, BZX84C39TS-7-F uniquely delivers three matched 39 V Zeners in the smallest possible footprint (2.2 × 1.35 mm) with lowest thermal resistance (625 °C/W), making it optimal for space- and thermal-constrained multi-rail protection.
Availability
BZX84C39TS-7-F is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive BCM power rails, telecom line card protection, and medical infusion pump monitoring requiring stable component supply and long-term lifecycle continuity.
Supply support for BZX84C39TS-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 and manufacturing operations across Asia and the Americas.
The BZX84 series belongs to Diodes' precision Zener diode portfolio, engineered specifically for compact, high-reliability voltage regulation and transient suppression in space-constrained industrial and automotive applications.
FAQ
What is the maximum continuous Zener current for BZX84C39TS-7-F?
The device is rated for 2 mA Zener test current (IZT), but its absolute maximum continuous current depends on thermal conditions. At 25 °C ambient with recommended FR4 pad layout, the 200 mW power limit allows up to ~5.1 mA (200 mW ÷ 39 V), though derating per Fig. 1 reduces this to ~3.2 mA at 85 °C ambient.
Can BZX84C39TS-7-F be used in place of a single 39 V Zener diode?
Yes - any one of its three isolated Zener elements (e.g., A1/C1) functions identically to a standalone 39 V Zener. The remaining two elements remain unused but do not affect performance, enabling future design scalability without footprint change.
Is the SOT-363 package compatible with standard reflow profiles?
Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, supporting peak temperatures up to 260 °C. Matte tin plating ensures reliable wetting and intermetallic formation on ENIG and OSP PCB finishes.
How does the temperature coefficient affect regulation accuracy over temperature?
With a specified tempco of –3.5 to +0.2 mV/°C, the Zener voltage shifts by ≤±0.35 V over a 100 °C range (e.g., –40 to +60 °C), resulting in ≤±0.9% deviation from 39.0 V nominal - acceptable for non-precision clamping but insufficient for metrology-grade references.
BZX84C39TS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Configuration:
- 3 Independent
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 27.3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BZX84C39TS-7-F FAQ
1.How can I place an order for BZX84C39TS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C39TS-7-F 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 BZX84C39TS-7-F reliable?
The price and inventory of BZX84C39TS-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C39TS-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C39TS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C39TS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C39TS-7-F?
BZX84C39TS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C39TS-7-F 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 BZX84C39TS-7-F?
For technical support, including BZX84C39TS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C39TS-7-F requirements.
6.How does Aetrix verify that BZX84C39TS-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C39TS-7-F 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 BZX84C39TS-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C39TS-7-F?
All BZX84C39TS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C39TS-7-F, 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 BZX84C39TS-7-F part is unused and in its original packaging.
Return procedure for BZX84C39TS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C39TS-7-F Tags
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Diodes Incorporated
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