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STMicroelectronics STPST1H100ZF
- Part No.:
- STPST1H100ZF
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
STPST1H100ZF.pdf
- Description:
- 100 V, 1 A POWER SCHOTTKY TRENCH
- Quantity:
- Payment:
- Shipping:
Inventory:11,900
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Product details
Overview
STPST1H100ZF from STMicroelectronics is a 1 A, 100 V Schottky trench rectifier in SOD123Flat package, optimized for high-frequency SMPS with low conduction and switching losses. It delivers typ. 0.580 V forward voltage at 1 A/125 °C, supports 175 °C max junction temperature, and is avalanche tested for ruggedness in flyback and auxiliary power supply circuits.
For engineers reviewing the STPST1H100ZF datasheet, STPST1H100ZF pinout, STPST1H100ZF application, or STPST1H100ZF equivalent, key selection criteria include VF/IR trade-off at high Tj, thermal resistance (Rth(j-l) = 16 °C/W), ECOPACK2 compliance, and suitability for space-constrained DC/DC converters and LED lighting drivers.
Technical Context
This Schottky rectifier uses ST's proprietary trench technology to achieve superior VF/IR balance on minimal silicon area-enabling compact, high-efficiency operation in miniature switched-mode supplies. Its flat SOD123Flat package minimizes parasitic inductance and thermal resistance while supporting high-density PCB layouts.
The device is rated for repetitive 100 V reverse voltage and 1 A average forward current at TL = 155 °C, with 25 A non-repetitive surge capability and 2 A single-pulse avalanche current (L = 300 µH, VDD = 15 V). Reverse leakage remains ≤0.48 mA at 70 V/125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Withstands repetitive reverse voltage up to 100 V without breakdown in flyback clamp or OR-ing applications. |
| IF(AV) | 1 A at TL = 155 °C - Sustains continuous forward current in thermally constrained auxiliary supplies and LED drivers. |
| VF (typ.) | 0.580 V at 1 A / 125 °C - Reduces conduction loss to ~0.58 W per diode, critical for efficiency in high-duty-cycle SMPS. |
| Tj (max.) | +175 °C - Enables reliable operation in sealed enclosures or high-ambient telecom/server power stages. |
| Rth(j-l) | 16 °C/W (SOD123Flat) - Limits junction-to-lead temperature rise to 16 K per watt, simplifying thermal design on FR4 PCBs. |
| IAS | 2 A - Withstands unclamped inductive switching energy (EAS = ½ × L × IAS²) in freewheeling paths without failure. |
| IR (max.) | 0.48 mA at 70 V / 125 °C - Minimizes standby power loss in always-on auxiliary rails. |
Pinout & Package
SOD123Flat is a surface-mount, two-terminal flat lead package with cathode marking (K) and anode (A) terminals. Dimensions: 2.60 mm × 1.60 mm × 0.98 mm (L × W × H), lead pitch 1.50 mm, weight 12.5 mg. Compliant with ECOPACK2 environmental standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to input rail or switch node; must handle peak IF and IFSM transients. |
| Cathode (K) | Forward current exit / reverse voltage reference | Connected to output or ground; marked side on package; defines polarity in OR-ring and reverse polarity protection. |
Key Features
| Feature | Design Value |
|---|---|
| ST trench Schottky technology | Optimizes VF/IR trade-off on minimal die area-reducing cost and footprint without sacrificing efficiency. |
| 175 °C maximum junction temperature | Enables operation in thermally aggressive environments (e.g., enclosed server PSUs) without derating or forced cooling. |
| Avalanche-tested (IAS = 2 A) | Guarantees robustness under unclamped inductive switching-critical for freewheeling in flyback and buck-derived topologies. |
| Low Rth(j-l) = 16 °C/W | Allows direct thermal coupling to PCB copper, eliminating need for heatsinks in <1 W dissipation applications. |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and REACH requirements-supporting green product certification for industrial and telecom equipment. |
Applications
| Telecom Auxiliary Power Supply | LED Driver Secondary Rectification |
|---|---|
Use Scenario: Provides isolated +5 V or +3.3 V bias for control ICs and gate drivers in telecom AC/DC front-ends. IC Role / Device Role / Timing Role: Freewheeling rectifier in discontinuous conduction mode (DCM) flyback converter. Use Value: Low VF (0.58 V) cuts conduction loss by >25% vs. standard Schottkys, improving no-load efficiency and reducing thermal stress on small PCB areas. | Use Scenario: Rectifies secondary-side output in constant-current LED drivers for street lighting and indoor fixtures. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback topology operating at 65–130 kHz. Use Value: 175 °C Tj rating allows sustained operation near hot LED arrays; low IR ensures stable output under high ambient temperatures. |
| Smart Meter Power Conversion | Industrial DC/DC Converter |
Use Scenario: Generates internal supply rails from utility mains via isolated flyback in Class 0.5 smart meters. IC Role / Device Role / Timing Role: OR-ring diode enabling dual-input redundancy (mains + battery backup). Use Value: Avalanche rating (2 A) prevents failure during line surges; flat SOD123Flat fits tight meter housing constraints. | Use Scenario: High-density 12 V → 3.3 V/1 A isolated DC/DC module for PLC I/O modules and sensor interfaces. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in compact 10 mm × 10 mm modules. Use Value: Rth(j-l) = 16 °C/W enables full 1 A load without external thermal relief-reducing BOM count and assembly steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1H100S | SOD-123 package, same VF/IR specs, but not avalanche-rated (no IAS test data published) | Lacks documented avalanche ruggedness-unsuitable for unclamped inductive switching in flyback snubbers | Select only where surge immunity is not required and thermal margin exceeds 20 K. |
| MBR1100F-E3/45 | DO-214AC package, VF = 0.75 V @ 1 A/25 °C, Rth(j-a) ≈ 75 °C/W (vs. 16 °C/W for STPST1H100ZF) | Higher VF increases conduction loss by ~30%; larger footprint limits high-density designs | Prefer only when legacy DO-214AC layout exists and thermal budget permits higher ΔT. |
Compared with STPS1H100S and MBR1100F-E3/45, STPST1H100ZF uniquely combines avalanche ruggedness, ultra-low Rth(j-l), and flat SOD123Flat packaging-making it optimal for miniaturized, high-reliability auxiliary and LED power stages where thermal and surge margins are constrained.
Availability
STPST1H100ZF is available at Aetrix Electronics and suitable for telecom auxiliary power supply, LED driver secondary rectification, and smart meter power conversion requiring stable component supply across multi-year production cycles.
Supply support for STPST1H100ZF 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
STPST1H100ZF belongs to ST's trench Schottky rectifier product line-engineered specifically for high-frequency, space-constrained SMPS in telecom, LED, and smart infrastructure applications where efficiency, thermal performance, and reliability are critical.
FAQ
What is the maximum allowable PCB copper area for optimal thermal performance of STPST1H100ZF?
For SOD123Flat, thermal resistance junction-to-ambient drops to ~4.5 °C/W with ≥2.0 cm² of 70 µm copper per lead on FR4. Minimum recommended copper area is 0.5 cm² per lead to maintain Rth(j-a) ≤ 12 °C/W at 1 A load-verified in Figure 9 of DS14189 Rev 3.
Does STPST1H100ZF support synchronous rectification drive signals?
No-STPST1H100ZF is a passive Schottky rectifier with fixed anode/cathode terminals. It does not integrate gate control or driver circuitry. For synchronous rectification, ST offers dedicated SR controllers (e.g., STSR3) paired with discrete MOSFETs-not integrated Schottky devices.
Can STPST1H100ZF replace standard PN-junction rectifiers in existing 100 V designs?
Yes-its 100 V VRRM and 1 A IF(AV) match common 1N4007-class replacements, but its Schottky architecture eliminates reverse recovery time (trr ≈ 0 ns), reducing EMI and switching loss. Verify layout thermal relief and ensure VR does not exceed 100 V due to lack of PN soft-recovery clamping.
Is STPST1H100ZF qualified for automotive applications per AEC-Q101?
No-STPST1H100ZF is not AEC-Q101 qualified. It is specified for industrial, telecom, and consumer power applications. For automotive-grade equivalents, ST recommends the AEC-Q101-qualified STTH1L06 (600 V) or STPS2H100 (100 V, SOD-123, AEC-Q101 pending per latest ST product brief).
STPST1H100ZF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 725 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.7 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- 175°C
STPST1H100ZF FAQ
1.How can I place an order for STPST1H100ZF through Aetrix?
Please submit a Request for Quotation (RFQ) for STPST1H100ZF 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 STPST1H100ZF reliable?
The price and inventory of STPST1H100ZF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPST1H100ZF is usually 5 days.
3.What payment methods are accepted for STPST1H100ZF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPST1H100ZF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPST1H100ZF?
STPST1H100ZF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPST1H100ZF 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 STPST1H100ZF?
For technical support, including STPST1H100ZF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPST1H100ZF requirements.
6.How does Aetrix verify that STPST1H100ZF is sourced from the original manufacturer or authorized distributors?
All STPST1H100ZF 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 STPST1H100ZF meets industry standards.
7.What is the process for return or replacement of STPST1H100ZF?
All STPST1H100ZF units undergo pre-shipment inspection (PSI). If there is an issue with STPST1H100ZF, 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 STPST1H100ZF part is unused and in its original packaging.
Return procedure for STPST1H100ZF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPST1H100ZF Tags
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1N4448X-TP
Micro Commercial Co
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1N4148WX-TP
Micro Commercial Co
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1N4148TR
onsemi
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MMSD4148T1G
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BAS16HT1G
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1N914BWT
onsemi
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BAS21LT1G
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LL4148
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MMSD914T1G
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BAV21W-7-F
Diodes Incorporated
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