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Taiwan Semiconductor Corporation 1SMB5952H
- Part No.:
- 1SMB5952H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1SMB5952H.pdf
- Description:
- DIODE ZENER 130V 3W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,479
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Product details
Overview
1SMB5952H from Taiwan Semiconductor is a surface-mount silicon Zener diode with nominal zener voltage 130 V, 3 W power rating, 2.9 mA test current, and DO-214AA (SMB) package. It provides precise voltage regulation and reference in automotive-grade circuits requiring AEC-Q101 qualification and stable thermal performance up to 150°C junction temperature.
For engineers reviewing the 1SMB5952H datasheet, 1SMB5952H pinout, 1SMB5952H application, or 1SMB5952H equivalent, key selection criteria include its 130 V ±5% zener tolerance, low dynamic impedance of 450 Ω at 1 mA, 98.8 V maximum DC zener current, and compliance with JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The 1SMB5952H operates as a single-die, unidirectional voltage reference device with glass-passivated junction for enhanced reliability and low inductance. Its zener voltage is specified at 25°C with thermal coefficient curves provided across –55°C to +150°C operating range.
It delivers regulated output under reverse-bias conditions with defined leakage current ≤0.25 μA at 98.8 V and maximum DC zener current of 11 mA. Thermal resistance values-RθJL = 25°C/W and RθJA = 226°C/W-are measured per JEDEC standards on standard PCB mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 123.5–136.5 V at IZT = 2.9 mA; enables stable 130 V reference with ±5% tolerance |
| Power Dissipation (PTOT) | 3 W at TL = 75°C; supports continuous operation in compact SMB footprint without forced cooling |
| Zener Impedance (ZZT) | 450 Ω at IZT = 2.9 mA; ensures minimal voltage deviation under load transients |
| Leakage Current (IR) | ≤0.25 μA at VR = 98.8 V; critical for low-power biasing and precision sensing circuits |
| Junction Temperature Range | –55°C to +150°C; validated for under-hood automotive and industrial control environments |
| Package | DO-214AA (SMB); surface-mount compatible with automated placement and reflow soldering |
Pinout & Package
DO-214AA (SMB) package with cathode band indicating terminal polarity; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / reference ground node | Connected to circuit common when used in shunt regulation configuration |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 130 V reference voltage relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS power domains |
| Glass passivated junction | Improves long-term stability and reduces parameter drift under thermal cycling |
| Low inductance construction | Minimizes voltage overshoot during fast transient suppression in ESD/overvoltage protection |
| Moisture sensitivity level 1 | Enables direct use from reel without baking; eliminates production line delays |
Applications
| Automotive Voltage Reference | Industrial Power Supply Regulation |
|---|---|
Use Scenario: Providing stable 130 V reference for analog-to-digital converters in battery management systems. IC Role / Device Role / Timing Role: Zener diode operating in reverse-biased breakdown mode to clamp and stabilize reference rail. Use Value: Maintains <±0.5% reference accuracy over temperature due to low TC and AEC-Q101 validation. | Use Scenario: Regulating auxiliary 130 V supply in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across load despite input ripple and load variation. Use Value: Delivers 3 W dissipation capability with 450 Ω dynamic impedance for tight regulation under 11 mA max load. |
| Overvoltage Protection Clamp | High-Voltage Sensor Biasing |
Use Scenario: Clamping transient surges on 120 V AC-derived DC rails in motor drive gate driver supplies. IC Role / Device Role / Timing Role: Fast-acting voltage limiter absorbing energy during line spikes above 130 V. Use Value: Withstands non-repetitive surge power up to 1000 W (8/20 µs waveform) per curve Fig.10. | Use Scenario: Biasing photodiode or isolation amplifier input stages requiring precise high-voltage reference. IC Role / Device Role / Timing Role: Low-leakage (≤0.25 µA) voltage source establishing fixed bias point for signal conditioning. Use Value: Enables sub-µA bias current integrity in high-impedance sensor interfaces without reference drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF130A | Lower power rating (1 W), higher leakage (1 µA at 104 V), same DO-214AA package | Suitable for low-power clamping only; not rated for continuous 3 W regulation | Select when surge-only protection suffices and thermal budget is constrained |
| 1N5375B | Through-hole DO-41 package, 130 V nominal, 5 W rating, higher ZZT (500 Ω) | Requires PCB through-hole assembly; better for high-reliability legacy industrial designs | Choose for manual repairability or where board space allows larger footprint |
Compared with SMF130A and 1N5375B, the 1SMB5952H uniquely combines AEC-Q101 qualification, 3 W surface-mount capability, and 450 Ω dynamic impedance - making it optimal for automotive and space-constrained industrial regulation where both reliability and thermal density matter.
Availability
1SMB5952H is available at Aetrix Electronics and suitable for automotive voltage reference, industrial power supply regulation, overvoltage protection clamp, and high-voltage sensor biasing requiring stable component supply and full traceability.
Supply support for 1SMB5952H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, analog ICs, and protection components with global distribution and AEC-Q101 certification capability.
The 1SMB59xxH series was designed specifically for high-reliability surface-mount voltage regulation and transient suppression in automotive and industrial power systems demanding robust thermal performance and process-controlled parametric consistency.
FAQ
What is the nominal zener voltage and tolerance of the 1SMB5952H?
The 1SMB5952H has a nominal zener voltage of 130 V with a tolerance of ±5%, corresponding to a guaranteed range of 123.5 V to 136.5 V at 2.9 mA test current. This tolerance is confirmed in the Electrical Specifications table on page 2 of the official Taiwan Semiconductor datasheet (Version A2102). The 1SMB5952H achieves this precision via tightly controlled diffusion and glass passivation processes.
Is the 1SMB5952H qualified for automotive applications?
Yes, the 1SMB5952H is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating the 1SMB5952H for use in engine control, body electronics, and ADAS subsystems where reliability under harsh conditions is mandatory.
What is the maximum DC zener current rating for the 1SMB5952H?
The maximum DC zener current (IZM) for the 1SMB5952H is 11 mA, as listed in the Electrical Specifications table. This value corresponds to the current at which the device maintains its specified zener voltage while dissipating up to 3 W at 75°C lead temperature. Exceeding 11 mA risks thermal runaway unless board-level thermal management (e.g., 5 mm × 5 mm Cu pad) is implemented per Note 1 in the Absolute Maximum Ratings.
Does the 1SMB5952H have moisture sensitivity concerns for SMT assembly?
No, the 1SMB5952H has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly onto the SMT line without baking. This is confirmed in the FEATURES section and eliminates production delays associated with moisture-sensitive components - a key advantage for high-volume automotive and industrial manufacturing using the 1SMB5952H.
What is the zener impedance of the 1SMB5952H and why does it matter?
The 1SMB5952H exhibits a zener impedance (ZZT) of 450 Ω at 2.9 mA test current, as specified in the Electrical Specifications table. This value reflects how tightly the device regulates voltage under varying load conditions - lower impedance means smaller voltage deviations during current transients. For the 1SMB5952H, 450 Ω enables stable reference performance in precision analog circuits and fast-response protection schemes.
1SMB5952H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 130 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 450 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 98.8 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
1SMB5952H FAQ
1.How can I place an order for 1SMB5952H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMB5952H 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 1SMB5952H reliable?
The price and inventory of 1SMB5952H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMB5952H is usually 5 days.
3.What payment methods are accepted for 1SMB5952H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMB5952H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMB5952H?
1SMB5952H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMB5952H 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 1SMB5952H?
For technical support, including 1SMB5952H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMB5952H requirements.
6.How does Aetrix verify that 1SMB5952H is sourced from the original manufacturer or authorized distributors?
All 1SMB5952H 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 1SMB5952H meets industry standards.
7.What is the process for return or replacement of 1SMB5952H?
All 1SMB5952H units undergo pre-shipment inspection (PSI). If there is an issue with 1SMB5952H, 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 1SMB5952H part is unused and in its original packaging.
Return procedure for 1SMB5952H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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