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Vishay General Semiconductor - Diodes Division TPSMA10AHM3_B/I
- Part No.:
- TPSMA10AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA10AHM3_B/I.pdf
- Description:
- TVS DIODE 8.65VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,859
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Product details
Overview
TPSMA10AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 10 V breakdown voltage (VBR = 9.5–10.5 V at 1 mA), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature. It protects MOSFETs and ICs against lightning-induced surges and inductive switching transients in automotive power rails.
For engineers reviewing the TPSMA10AHM3_B/I datasheet, TPSMA10AHM3_B/I pinout, TPSMA10AHM3_B/I application, or TPSMA10AHM3_B/I equivalent, key selection criteria include clamping voltage (VC = 27.6 V at IPPM), unidirectional polarity, AEC-Q101 qualification, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its passivated anisotropic rectifier technology ensures stable VBR drift (αT = 0.064 %/°C) and low incremental surge resistance across -65 °C to +185 °C operating range.
Designed for high-reliability automotive applications, the TPSMA10AHM3_B/I meets MSL Level 1 (260 °C peak reflow) and supports repetitive 0.01 % duty cycle pulses. Its 27.6 V clamping voltage at 14.5 A peak pulse current provides predictable overvoltage limiting under standardized 10/1000 µs surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 9.5 V / 10.0 V / 10.5 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 8.65 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| VC @ IPPM | 27.6 V at 14.5 A - clamped voltage during 400 W surge, directly limits stress on downstream components |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity under standardized transient test condition |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes terminal orientation |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, 0.064 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line; conducts during overvoltage to clamp to VC |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane for effective surge shunting |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<5 µA at VWM) over lifetime and temperature |
| 185 °C junction rating | Supports placement near heat sources (e.g., power converters) without thermal derating |
| 400 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surge events with margin in compact SMA footprint |
| Halogen-free, RoHS-compliant HM3 suffix | Fulfills automotive environmental compliance requirements (e.g., ELV, IMDS) |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between power rail and ground, triggered within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤27.6 V, preventing damage to 36 V-rated CAN transceivers and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal lines, minimizing signal distortion. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 to safe levels while maintaining <1 nA leakage at 8.65 V operating bias. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side controllers from mains-borne surges. IC Role / Device Role / Timing Role: Fast-response transient suppressor on input rectified DC bus. Use Value: Absorbs 400 W surges without degradation, enabling single-stage protection without series impedance. | Use Scenario: Protecting PoE-powered equipment front-end circuitry from induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level clamping device on DC feed line prior to DC-DC converter input. Use Value: Withstands repetitive 10/1000 µs surges up to 14.5 A while maintaining VC ≤27.6 V for IEEE 802.3af/at compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Same SMA package, 400 W rating, but VBR = 11.1–12.3 V (higher threshold); not AEC-Q101 qualified | General industrial use only; lacks automotive qualification and tighter VBR tolerance | Select when AEC-Q101 is not required and higher clamping voltage is acceptable |
| TPSMA10AHE3_B/I | Identical electrical specs and package; differs only in RoHS compliance (HE3 = RoHS+AEC-Q101, HM3 = RoHS+halogen-free+AEC-Q101) | No functional difference; HM3 adds halogen-free requirement for stricter automotive material declarations | Choose HM3 for OEMs requiring IMDS-compliant halogen-free BOMs |
Compared with SMAJ10A and TPSMA10AHE3_B/I, the TPSMA10AHM3_B/I uniquely combines tight 9.5–10.5 V VBR, halogen-free construction, and AEC-Q101 qualification-making it the preferred choice for Tier 1 automotive power rail designs where material compliance and precise clamping are jointly critical.
Availability
TPSMA10AHM3_B/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder line surge suppression requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TPSMA10AHM3_B/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA10AHM3_B/I belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPSMA10AHM3_B/I under a 10/1000 µs surge?
The TPSMA10AHM3_B/I has a maximum clamping voltage (VC) of 27.6 V at 14.5 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per JEDEC/IEC test conditions and ensures predictable overvoltage limiting for downstream ICs and MOSFETs in the protected circuit.
Is the TPSMA10AHM3_B/I qualified for automotive applications?
Yes, the TPSMA10AHM3_B/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade reliability. It is rated for operation from -65 °C to +185 °C and passes rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD per JESD22-A114.
What does the "HM3" suffix mean in TPSMA10AHM3_B/I?
The "HM3" suffix in TPSMA10AHM3_B/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from HE3 (RoHS+AEC-Q101 but not halogen-free) and confirms compliance with automotive material restrictions such as ELV and IMDS reporting requirements.
What is the standoff voltage (VWM) of the TPSMA10AHM3_B/I?
The standoff voltage (VWM) of the TPSMA10AHM3_B/I is 8.65 V - the maximum DC or continuous reverse voltage that can be applied without exceeding 5 µA leakage current at 25 °C. This allows safe operation on 8 V nominal systems while retaining margin before avalanche conduction begins.
Does the TPSMA10AHM3_B/I have a unidirectional or bidirectional configuration?
The TPSMA10AHM3_B/I is unidirectional only, as confirmed in the Vishay datasheet. It features a cathode band marking and is designed to clamp positive transients on the cathode side relative to anode (ground). Bidirectional variants are not offered in the TPSMAxxA family.
TPSMA10AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.65V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA10AHM3_B/I FAQ
1.How can I place an order for TPSMA10AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA10AHM3_B/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 TPSMA10AHM3_B/I reliable?
The price and inventory of TPSMA10AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA10AHM3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA10AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA10AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA10AHM3_B/I?
TPSMA10AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA10AHM3_B/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 TPSMA10AHM3_B/I?
For technical support, including TPSMA10AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA10AHM3_B/I requirements.
6.How does Aetrix verify that TPSMA10AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA10AHM3_B/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 TPSMA10AHM3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA10AHM3_B/I?
All TPSMA10AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA10AHM3_B/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 TPSMA10AHM3_B/I part is unused and in its original packaging.
Return procedure for TPSMA10AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA10AHM3_B/I Tags
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