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Vishay General Semiconductor - Diodes Division TPSMB15AHM3_A/H
- Part No.:
- TPSMB15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB15AHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,024
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Product details
Overview
TPSMB15AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 21.2 V maximum clamping voltage (VC) at 28.3 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB15AHM3_A/H datasheet, TPSMB15AHM3_A/H pinout, TPSMB15AHM3_A/H application, or TPSMB15AHM3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown characteristics across temperature and lifetime. Its unidirectional configuration enables precise reverse-biased clamping without forward conduction during normal operation, with low incremental surge resistance ensuring minimal voltage overshoot during transient events.
The device is rated for 75 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a typical VBR temperature coefficient of +0.076 %/°C - enabling predictable voltage shift over its -65 °C to +185 °C operating range. It meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - ensures reliable triggering above system operating voltage while accommodating process variation and temperature drift |
| VWM | 12.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA, defining safe operating margin below breakdown |
| VC @ IPPM | 21.2 V at 28.3 A - clamped voltage during 10/1000 µs surge, directly limiting stress on downstream ICs like MCUs or MOSFET drivers |
| PPPM | 600 W - peak pulse power handling capability under standard 10/1000 µs waveform, supporting robust ESD and load-dump immunity |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures without derating |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to protected rail polarity |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint and matte tin-plated leads |
Pinout & Package
TPSMB15AHM3_A/H is housed in the SMB (DO-214AA) package: a rectangular surface-mount case with cathode band marking, 0.205" × 0.220" body dimensions, and two coplanar terminals. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential node; defines clamping path when cathode is at higher potential |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail); conducts surge current to anode during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per AEC test plan |
| Halogen-free & RoHS-compliant | Meets JEDEC JS709E and EU RoHS Directive 2011/65/EU; no brominated flame retardants in molding compound |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60 % RH; compatible with standard SMT reflow up to 260 °C peak |
| Low clamping ratio (VC/VBR) | 1.41 - tight clamping margin reduces overvoltage exposure to sensitive loads compared to higher-ratio TVS devices |
| Fast response time | <1.0 ps - intrinsic diode junction response enables sub-nanosecond clamping onset, critical for ESD and fast transients |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against ISO 7637-2 load dump and ISO 16750-2 jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp transients before they reach LDOs or microcontrollers. Use Value: Withstands 600 W pulses and operates to +185 °C, enabling direct placement near connectors in engine control modules. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors exposed to cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across sensor output and ground to suppress ESD without distorting mV-level signals. Use Value: 21.2 V clamping voltage limits stress on op-amp inputs, while unidirectional polarity avoids DC loading on active signal paths. |
| Consumer USB Power Input Protection | Telecom DC Power Interface |
|
Use Scenario: Guarding USB-C PD input stages in portable medical devices against hot-plug transients and adapter faults. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line to absorb 10/1000 µs surges while maintaining <1 µA leakage at 9 V. Use Value: 12.8 V VWM allows compatibility with 9–12 V input ranges; halogen-free construction supports IEC 62368-1 compliance. |
Use Scenario: Securing -48 V telecom power feeds against lightning-induced common-mode surges entering central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS installed between -48 V rail and chassis ground to shunt differential surges. Use Value: 75 A IFSM rating supports repeated surge events; AEC-Q101 qualification adds confidence in long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR (14.3–15.8 V), but lower PPPM = 400 W and VC = 24.4 V at 24.4 A; SMB package identical | Limited to lower-energy transients; not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select SMAJ15A only if surge energy is ≤400 W and automotive qualification is unnecessary |
| TPSMB15AHE3_A/H | Identical electrical specs and SMB package; differs only in plating - HE3 suffix denotes standard RoHS-compliant tin, HM3 denotes halogen-free tin | No functional difference; HM3 required where halogen-free compliance is mandated (e.g., EU medical or telecom standards) | Choose TPSMB15AHE3_A/H for cost-sensitive non-halogen-free designs; TPSMB15AHM3_A/H where halogen-free is specified |
Compared with SMAJ15A, TPSMB15AHM3_A/H delivers 50 % higher surge power handling and automotive qualification; versus TPSMB15AHE3_A/H, it substitutes halogen-free plating without altering clamping behavior or thermal performance - making it the preferred choice for regulated industrial and automotive deployments.
Availability
TPSMB15AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface clamping, and telecom DC feed protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for TPSMB15AHM3_A/H 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The TPSMB series was developed specifically for surface-mount transient suppression in harsh environments - targeting automotive under-hood systems, industrial controls, and telecom infrastructure where 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of TPSMB15AHM3_A/H at its rated peak pulse current?
The TPSMB15AHM3_A/H has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current (IPPM) of 28.3 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88406 and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMB15AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is TPSMB15AHM3_A/H qualified for automotive applications?
Yes, TPSMB15AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3", which denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It undergoes full stress testing per the AEC-Q101 standard, including temperature cycling, high-temperature reverse bias, and surge endurance - making TPSMB15AHM3_A/H suitable for engine control units, body electronics, and ADAS power domains.
What does the "HM3" suffix indicate in TPSMB15AHM3_A/H?
The "HM3" suffix in TPSMB15AHM3_A/H specifies halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity. It distinguishes the part from the "HE3" variant (standard RoHS tin plating) and confirms compliance with environmental regulations such as JEDEC JS709E. The TPSMB15AHM3_A/H retains identical electrical and thermal specifications as HE3 versions - only the plating chemistry differs.
Can TPSMB15AHM3_A/H be used in bidirectional configurations?
No, TPSMB15AHM3_A/H is unidirectional only, as explicitly stated in the Vishay datasheet. It clamps only when the cathode is at a higher potential than the anode. For bidirectional transient suppression, a separate device such as the SMBJ15CA or a back-to-back unidirectional pair would be required. Using TPSMB15AHM3_A/H in reverse polarity risks permanent failure due to forward conduction beyond its 3.5 V @ 50 A rating.
What is the maximum operating temperature for TPSMB15AHM3_A/H?
The TPSMB15AHM3_A/H has a maximum junction temperature (TJ) rating of +185 °C, validated per the Vishay datasheet 88406. This enables reliable operation in high-ambient environments such as automotive engine compartments or sealed industrial enclosures. Derating curves in Figure 2 confirm usable pulse power down to TJ = 185 °C, and the device remains within specification across its full -65 °C to +185 °C storage and operating range.
TPSMB15AHM3_A/H 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
TPSMB15AHM3_A/H FAQ
1.How can I place an order for TPSMB15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB15AHM3_A/H 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 TPSMB15AHM3_A/H reliable?
The price and inventory of TPSMB15AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB15AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB15AHM3_A/H?
TPSMB15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB15AHM3_A/H 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 TPSMB15AHM3_A/H?
For technical support, including TPSMB15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB15AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB15AHM3_A/H 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 TPSMB15AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB15AHM3_A/H?
All TPSMB15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB15AHM3_A/H, 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 TPSMB15AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMB15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB15AHM3_A/H Tags
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