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Vishay General Semiconductor - Diodes Division TPSMB12AHM3_A/I
- Part No.:
- TPSMB12AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB12AHM3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,455
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Product details
Overview
TPSMB12AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMB (DO-214AA) package, designed for clamping inductive switching transients and lightning-induced surges on power/signal lines. It features 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 16.7 V maximum clamping voltage at 35.9 A peak pulse current, 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPSMB12AHM3_A/I datasheet, TPSMB12AHM3_A/I pinout, TPSMB12AHM3_A/I application, or TPSMB12AHM3_A/I equivalent, this page delivers verified electrical parameters, thermal limits (TJ = −65 °C to +185 °C), mechanical package data, real-world protection use cases, and two validated alternative TVS diodes with documented differences in clamping performance and temperature coefficient.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds its 12.0 V breakdown threshold. Its passivated anisotropic rectifier structure ensures stable VBR drift (αT = 0.070 %/°C) and low incremental surge resistance under repetitive 10/1000 µs transients.
Rated for 75 A non-repetitive forward surge (8.3 ms half-sine), it delivers 3.5 V max forward voltage at 50 A and meets MSL Level 1 reflow (260 °C peak). The halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V - Ensures reliable turn-on above system operating voltage while avoiding false triggering |
| VWM | 10.2 V - Maximum continuous reverse voltage before leakage exceeds 2 µA, compatible with 12 V rail systems |
| VC @ IPPM | 16.7 V - Clamps 35.9 A surge to safe levels for downstream ICs like microcontrollers or CAN transceivers |
| PPPM | 600 W - Sustains high-energy transients per 10/1000 µs waveform with 0.01 % duty cycle |
| TJ max. | +185 °C - Enables operation in under-hood automotive environments without derating |
| IFSM | 75 A - Withstands motor driver or relay coil flyback surges without failure |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount footprint with 0.205" × 0.220" pad layout |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, cathode indicated by color band. Dimensions: 3.94 mm × 2.20 mm × 1.52 mm (L × W × H); compliant with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference node | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Junction passivation | Stabilizes VBR across temperature (0.070 %/°C) and prevents parametric shift after 1000+ surge events |
| MSL Level 1 rating | Enables single-reflow assembly at 260 °C peak without popcorn or delamination risk |
| Halogen-free & RoHS | HM3 suffix confirms compliance with automotive environmental standards and lead-free soldering requirements |
| Low clamping ratio (VC/VBR) | 1.39 - Minimizes voltage overshoot during fast transients, protecting 12 V logic interfaces |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Suppressing load-dump spikes (up to 35 V) on 12 V battery-fed ECUs in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, acting as voltage clamp during ISO 7637-2 Pulse 5a events. Use Value: Limits rail voltage to ≤16.7 V during 35.9 A surge, preventing latch-up or gate oxide damage in MCU power domains. |
Use Scenario: Protecting analog outputs of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to shunt ESD (IEC 61000-4-2) and inductive kickback from nearby solenoids. Use Value: Clamps 8 kV contact ESD to <17 V within <1 ns, preserving 12-bit ADC accuracy and eliminating calibration drift. |
| Telecom DC Power Input Stage | Consumer USB-C Port Surge Guard |
|
Use Scenario: Safeguarding PoE-powered switches against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary TVS on input rail, coordinated with upstream GDT and downstream π-filter for multi-stage protection. Use Value: Absorbs 600 W transient energy without degradation, maintaining ≤10.2 V standby leakage to avoid quiescent current issues. |
Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C receptacles in portable monitors. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to connector to intercept hot-plug transients and cable discharge events. Use Value: Responds in <1 ns to limit VBUS overshoot to 16.7 V, preventing damage to USB PD controller and Type-C CC logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400 W), higher VC (20.1 V @ 24.9 A), no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to consumer/industrial where surge energy ≤400 W | Select SMAJ12A only if cost sensitivity outweighs automotive qualification and clamping performance needs. |
| TPSMB12AHM3_A/H | Identical electrical specs; differs only in packaging-7" tape/reel (750 pcs) vs. 13" tape/reel (3200 pcs) | No functional difference; choice depends solely on production volume and SMT line feeder compatibility | Choose TPSMB12AHM3_A/H for low-volume prototyping or small-batch builds requiring smaller reels. |
Compared with SMAJ12A, TPSMB12AHM3_A/I delivers 50 % higher surge power handling and tighter clamping, enabling robust protection in AEC-Q101–mandated environments; versus TPSMB12AHM3_A/H, it offers identical performance with optimized logistics for high-volume manufacturing.
Availability
TPSMB12AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101–compliant surge protection.
Supply support for TPSMB12AHM3_A/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The TPSMB12AHM3_A/I belongs to Vishay's PAR® TVS family, engineered specifically for high-temperature stability and repeatable clamping performance in automotive power distribution and industrial control systems.
FAQ
What is the maximum junction temperature rating for TPSMB12AHM3_A/I?
The TPSMB12AHM3_A/I is rated for a maximum junction temperature of +185 °C, enabling reliable operation in under-hood automotive environments and high-ambient industrial settings without thermal derating. This specification is validated per AEC-Q101 stress tests and confirmed in the Vishay datasheet revision 23-Jan-2024. The TPSMB12AHM3_A/I maintains stable VBR and clamping performance up to this limit.
Is TPSMB12AHM3_A/I compatible with lead-free reflow soldering processes?
Yes, TPSMB12AHM3_A/I meets J-STD-020 MSL Level 1 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. Its matte tin-plated terminals ensure solderability per JESD 22-B102, and the HM3 suffix confirms halogen-free, RoHS-compliant construction. The TPSMB12AHM3_A/I has been qualified for single-reflow assembly without popcorn or interfacial defects.
How does the clamping voltage of TPSMB12AHM3_A/I compare to its breakdown voltage?
The TPSMB12AHM3_A/I exhibits a clamping ratio of 1.39 (VC/VBR = 16.7 V / 12.0 V), indicating tight voltage control during surge events. At its rated 35.9 A peak pulse current (10/1000 µs), it clamps to 16.7 V while maintaining 12.0 V nominal breakdown. This low ratio ensures minimal overshoot on protected 12 V rails, directly supporting robust interface protection in systems using the TPSMB12AHM3_A/I.
Does TPSMB12AHM3_A/I meet AEC-Q101 qualification requirements?
Yes, TPSMB12AHM3_A/I carries the HM3 suffix, which explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. It has passed all required stress tests-including temperature cycling, high-temperature reverse bias, and mechanical shock-for automotive-grade reliability. The TPSMB12AHM3_A/I is approved for use in engine control units, body electronics, and other AEC-Q101–mandated applications.
What is the reverse leakage current of TPSMB12AHM3_A/I at its stand-off voltage?
At 25 °C and its 10.2 V stand-off voltage (VWM), the TPSMB12AHM3_A/I exhibits a maximum reverse leakage current of 2 µA. At elevated temperature (150 °C), leakage increases to ≤5 µA, ensuring minimal power loss in always-on automotive circuits. This low leakage preserves battery life in systems relying on the TPSMB12AHM3_A/I for persistent rail protection.
TPSMB12AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB12AHM3_A/I FAQ
1.How can I place an order for TPSMB12AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB12AHM3_A/I 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 TPSMB12AHM3_A/I reliable?
The price and inventory of TPSMB12AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB12AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB12AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB12AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB12AHM3_A/I?
TPSMB12AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB12AHM3_A/I 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 TPSMB12AHM3_A/I?
For technical support, including TPSMB12AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB12AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB12AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB12AHM3_A/I 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 TPSMB12AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB12AHM3_A/I?
All TPSMB12AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB12AHM3_A/I, 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 TPSMB12AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB12AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB12AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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